HA12155NT/HA12157NT
Audio Signal Processor for Cassette Deck (Dolby B/C-type NR with Recording System)
ADE-207-115C (Z)
4th Edition June 1997
Description
HA12155NT/HA12157NT is silicon monolithic bipolar IC providing Dolby noise reduction system*, electrical volume system, REC equalizer system and level meter system in one chip.
Functions
• |
REC equalizer |
× |
2 channel |
• |
Dolby B/C NR |
× |
2 channel |
• |
Electronic volume |
× |
2 channel |
• |
Level Meter |
× |
2 channel |
Features
•Inductor less REC equalizer is adjustable of its characteristics by external resistor
•Rec level is adjustable automatically with electrical volume which is built-in
•3 type of input selection is available (one is by way of electrical volume)
•Separate input selection SW and REC/PB SW
•Dolby noise reduction with dubbing cassette decks
(Unprocessed signal output available from recording out terminals during PB mode)
•Log-compressed level meter output is range from 0 V to 5 V
(Usable as music search switchable gain of 0 dB and 20 dB respectivily)
•Normal-speed/high-speed (Double), normal/metal/chrome fully electronic control switching built-in
•NR-ON/OFF, Dolby B/C, MPX ON/OFF fully electronic control switching built-in (Controllable from micro-controller directly)
•Reduction of number of pin by transfered serial data to electronic volume control switching and another control switching
(Controllable from micro-controller directly)
•Low external parts count
HA12155NT/HA12157NT
*Dolby is a trademark of Dolby Laboratories Licensing Corporation.
A license from Dolby Laboratories Licensing Corporation is required for the use of this IC.
Ordering Information
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Operating voltage |
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Type |
Package |
Dolby Level |
REC-OUT Level PB-OUT Level |
Min |
Max |
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HA12155NT |
DP-64S |
300 mVrms |
300 mVrms |
580 mVrms |
9.5 V |
16 V |
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HA12157NT |
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775 mVrms |
12 V |
16 V |
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Rev.4, Jun. 1997, page 2 of 57
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REC |
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LM |
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GNDVRI |
CNT RPI |
PBI |
IA OUT |
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OUT(L) |
LM |
OUT(L) |
GND EQ |
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(L) |
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PB OUT |
IN(L) |
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NRIN Vref |
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(2) OUT(L) |
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DATA CLK STB (1) (L) |
(L) (L) BIAS |
(L) DGND |
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(L) |
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M (L) |
(L) |
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EQ |
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X |
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IN(L) |
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NN NC NM HN HC |
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HM |
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Shift |
6BIT |
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RECT |
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register |
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Dolby B/C NR |
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Latch |
DAC |
IA |
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REC |
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LMA |
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EQ |
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Decoder |
E VOL |
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SW |
E VOL |
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REC |
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LMA |
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EQ |
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IA |
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BIAS |
6BIT |
Dolby B/C NR |
EQ-Controller |
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DAC |
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RECT |
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FM |
fQ |
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f/Q |
GH |
GL |
GP |
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P |
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X NRIN |
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EQ |
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4, |
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NR |
C/B |
MPX VCC VRI |
CNT RPI REF PBI INJ |
IA OUT (R) |
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PBOUT |
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IN(R)IREF EQ |
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.Jun |
Vref |
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LM |
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ON/OFF |
ON/OFF |
(R) |
(R) |
(R) |
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(R) |
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(R) |
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(R) |
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REC |
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OUT(R) |
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(R) |
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IN(R) |
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LM |
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57 of 3 page 1997, |
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OUT(R) |
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OUT(R) |
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Diagram Block
HA12155NT/HA12157NT
HA12155NT/HA12157NT
Absolute Maximum Ratings
Item |
Symbol |
Ratings |
Unit |
Supply voltage |
VCC |
16 |
V |
Power dissipation*1 |
Pd |
770 |
mW |
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Operating temperature |
Topr |
–30 to +75 |
°C |
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Storage temperature |
Tstg |
–55 to +125 |
°C |
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Note: 1. Value at Ta ≤ |
75°C |
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Electrical Characteristics (Ta = 25°C VCC = 14 V Dolby level 300 mVrms)
Item |
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Symbol |
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Min |
Typ |
Max |
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Unit |
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Test conditions |
Notes |
Quiescent current |
IQ |
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— |
29.0 |
37.0 |
mA |
no signal |
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Input amp gain |
GVIA RPI |
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18.5 |
20.0 |
21.5 |
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dB |
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Vin = 0 dB, f = 1 kHz |
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GVIA PBI |
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18.5 |
20.0 |
21.5 |
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B-type NR Encode Boost |
B-ENC-2K |
2.8 |
4.3 |
5.8 |
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dB |
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Vin = –20 dB, f = 2 kHz |
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B-ENC-5K |
1.7 |
3.2 |
4.7 |
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Vin = –20 dB, f = 5 kHz |
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C-type NR Encode Boost |
C-ENC-1K(1) |
3.9 |
5.9 |
7.9 |
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dB |
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Vin = –20 dB, f = 1 kHz |
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C-ENC-1K(2) |
18.1 |
19.6 |
21.6 |
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Vin = –60 dB, f = 1 kHz |
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C-ENC-700 |
9.8 |
11.8 |
13.8 |
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Vin = –30 dB, f = 700 Hz |
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Signal handling |
Vomax |
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12.0 |
13.0 |
— |
dB |
f = 1 kHz, THD = 1%, |
*1 |
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VCC = 12 V |
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Signal to noise ratio |
S/N |
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60.0 |
63.0 |
— |
dB |
Rg = 5.1 k Ω , CCIR/ARM |
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Total harmonic distortion |
THD |
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— |
0.08 |
0.3 |
% |
Vin = 0 dB, f = 1 kHz |
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Crosstalk |
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CT (R↔ L) |
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— |
–85.0 |
–79.0 |
dB |
Vin = 0 dB, f = 1 kHz |
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CT (RPI↔ |
PBI) |
— |
–80.0 |
–74.0 |
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CT (VRI↔ |
RPI) |
— |
–77.0 |
–71.0 |
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Control |
Hi level |
VcH |
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3.5 |
— |
5.3 |
V |
MPX ON/OFF, NR |
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voltage |
Lo level |
VcL |
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–0.2 |
— |
1.0 |
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ON/OFF C-NR/B-NR |
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Serial data |
Hi level |
VsH |
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3.5 |
— |
5.3 |
V |
CLK, DATA, STB |
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voltage |
Lo level |
VsL |
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–0.2 |
— |
1.0 |
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PB-out level |
HA12155 |
Vout |
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500 |
580 |
670 |
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mVrms |
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Vin = 0 dB, f = 1 kHz |
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HA12157 |
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665 |
775 |
900 |
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PB-offset |
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Vofs |
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–100 |
0.0 |
+100 |
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mV |
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no signal |
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Channel balance |
∆ GV |
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–1.0 |
0.0 |
1.0 |
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dB |
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Vin = 0 dB, f = 1 kHz |
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Volume gain |
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GVVR (MAX) |
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17.5 |
19.3 |
21.5 |
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dB |
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Vin = 100 mVrms, f =1 kHz |
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GVVR (MIN) |
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— |
— |
–55.0 |
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Vin = 3 Vrms, f = 1 kHz |
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Rev.4, Jun. 1997, page 4 of 57
HA12155NT/HA12157NT
Electrical Characteristics (Ta = 25°C VCC = 14 V Dolby level 300 mVrms) (cont)
Item |
Symbol |
Min |
Typ |
Max |
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Unit |
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Test conditions |
Notes |
Volume mute |
GVVR (MUT) |
— |
— |
–80.0 |
dB |
Vin = 3 Vrms, f = 1 kHz |
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Max-input level to volume |
Vin max (VR) |
11.0 |
12.6 |
— |
dBs |
f = 1 kHz, THD = 1%, |
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VCC = 12 V |
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Volume S/N |
S/N (VR) |
78.0 |
84.0 |
— |
dB |
Vin = 100 mVrms, f = 1 |
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kHz, A-WTG |
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Volume THD |
THD (VR) |
— |
0.04 |
0.3 |
% |
Vin = 100 mVrms, f = 1 |
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kHz |
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Equalizer gain |
GV EQ (500) |
13.0 |
15.0 |
17.0 |
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dB |
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Vin = 77.5 mVrms, |
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f = 500 Hz |
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GV EQ (1K) |
13.0 |
15.0 |
17.0 |
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Vin = 77.5 mVrms, |
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f = 1 kHz |
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GV EQ (5K) |
14.5 |
16.5 |
18.5 |
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Vin = 77.5 mVrms, |
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f = 5 kHz |
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GV EQ (10K) |
18.5 |
20.5 |
22.5 |
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Vin = 77.5 mVrms, |
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f = 10 kHz |
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GV EQ (20K) |
29.5 |
32.0 |
34.5 |
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Vin = 77.5 mVrms, |
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f = 20 kHz |
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Equalizer maximum input |
Vin max (EQ) |
–8.0 |
–7.0 |
— |
dBs |
f = 1 kHz, THD = 1%, |
*1 |
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VCC = 12 V |
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Equalizer S/N |
S/N (EQ) |
57.0 |
62.0 |
— |
dB |
Rg = 5.1 k Ω , A-WTG |
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Equalizer THD |
THD (EQ) |
— |
0.2 |
0.5 |
% |
Vin = 77.5 mVrms, |
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f = 1 kHz |
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Equalizer offset |
Vofs (EQ) |
–400 |
0.0 |
+400 |
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mV |
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no signal |
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Level meter output |
LM (0 dB) |
2.60 |
2.85 |
3.10 |
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V |
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Vin = 0 dB, f = 1 kHz |
*2 |
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LM (12 dB) |
3.60 |
3.90 |
4.20 |
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V |
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Vin = 12 dB, f = 1 kHz |
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Level meter output |
LM (–20 dB)1 |
0.80 |
1.10 |
1.40 |
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V |
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Vin = –20 dB, f = 1 kHz |
*2 |
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LM (–20 dB)2 |
2.55 |
3.0 |
3.15 |
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V |
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Vin = –20 dB, f = 1 kHz, |
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–20 dB range |
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Level meter offset |
LMofs 1 |
— |
150 |
300 |
mV |
no signal |
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LMofs 2 |
— |
200 |
350 |
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no signal, –20 dB range |
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Notes: 1. HA12155 VCC = 9.5 V, HA12157 VCC = 12 V |
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2. 0 dB = PB-OUT level |
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Rev.4, Jun. 1997, page 5 of 57
57 of 6 page 1997, .Jun 4,.Rev
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DC VM 2 |
SW16 |
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ON |
OFF |
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PB |
SW14 |
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Mode |
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L |
R |
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REC |
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controller |
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SW15 |
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AC VM 2 |
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EQ |
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PB |
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LM |
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REC |
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EQ |
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R72 |
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SW12 |
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EQ |
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16 k |
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SW4 |
PB |
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SW8 |
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R25 |
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RP |
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R22 |
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10 k |
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L |
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TP3 |
TP4 |
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SW10 |
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7.5 k |
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C30 |
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3 |
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VR |
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R67 |
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R66 |
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OFF |
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+ |
2.2 |
|
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R20 R71 |
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R19 |
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||||||
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R28 |
SW25 |
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|||||||||||||||
C61 |
|
C62 |
|
5.1 k |
5.1 k |
10 k Degital |
|
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C28 |
C29 |
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R21 |
1 |
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||||||||
C60 |
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C3 |
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20 k |
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||||||
10p |
R6 |
10p |
C33 |
C2 |
|
|
GND ON |
|
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|
2200p 2200p |
|
|
C27 |
|
C26 |
C25 |
|
C24 |
C23 |
|
C21 |
C20 |
|
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||||||||||
10p |
|
0.47 |
|
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C1 |
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|||||||||||
R4 |
R5 |
10 k |
|
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R29 |
|
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R27 |
R26 |
|
R24 |
R23 |
2200p |
0.1 0.1 |
+ |
|
0.1 |
|
|
|
+ 4.7 |
|
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|
||||||||
10k |
|
|
+ |
+ 1 |
+ 0.47 18 k + 0.47 |
|
2.4 k |
5.6 k |
|
22 k |
560 |
2.2 |
|
|
+ |
|
+ 0.47 |
|
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||||||||||||||
10 k |
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||||||||||||||||||||||
64 |
63 |
62 |
61 |
60 |
59 |
58 |
57 |
56 |
55 |
54 |
53 |
52 |
51 |
50 |
|
49 |
48 |
47 |
46 |
|
45 |
44 |
|
43 |
42 |
41 |
40 |
39 |
38 |
37 |
36 |
35 |
34 |
33 |
|
||||
DATA CLK |
STB |
GND |
VRI |
CNT |
RPI |
|
BIAS PBI DGND IA OUT NRIN V REF |
PBOUT SS1 |
SS2 |
CCR |
HLS |
LLS |
|
REC |
LM |
|
LM |
LM |
EQ |
GND |
EQ |
NN |
NC |
NM |
HN |
HC |
HM |
|
|||||||||||
|
|
|
(1) |
(L) |
(L) |
(L) |
|
|
(L) |
|
(L) |
(L) |
|
(L) |
(L) |
(L) |
|
(L) |
|
(L) |
|
DET(L) |
DET(L)OUT(L) IN(L) DET(L) OUT(L) IN(L) |
(2) |
OUT(L) |
|
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|||||||
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|
HA12155/7 NT (REC 1 CHIP) |
DP-64S |
|
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|
|||||||||||
NR |
|
MPX |
VRI |
CNT RPI |
|
|
PBI |
|
IA OUT NRIN V REF |
PBOUT SS1 |
SS2 |
CCR |
HLS |
LLS |
|
REC |
LM |
|
LM |
LM |
EQ |
|
EQ |
|
|
|
|
|
|
|
|||||||||
ON/OFFC/B |
ON/OFF V CC |
(R) |
(R) |
(R) |
|
REF |
(R) |
INJ |
(R) |
(R) |
|
(R) |
(R) |
(R) |
|
(R) |
|
(R) |
|
DET(R) |
DET(R)OUT(R) IN(R) DET(R) OUT(R)IN(R) |
IREF OUT(R) FM |
FQ |
F/Q |
GH |
GL |
GP |
|
|||||||||||
1 |
2 |
3 |
4 |
5 |
6 |
7 |
|
8 |
9 |
10 |
11 |
12 |
|
13 |
14 |
15 |
|
16 |
17 |
18 |
19 |
|
20 |
21 |
|
22 |
23 |
24 |
25 |
26 |
27 |
28 |
29 |
30 |
31 |
32 |
|
|
R1 |
R2 |
R3 |
C4 + |
C5 + C6 + C7 |
+ C8 + |
R8 |
R9 |
R10 |
|
|
R11 |
R13 |
C12 |
C13 |
C14 |
C15 |
|
+ |
C18 + |
R17 |
+ C19 |
R30 |
R31 |
R32 |
|
R33 |
R34 |
R35 |
|||||
|
2.4 k 5.6 k |
|
|
560 |
+ |
|
C16 |
|
|
|
|
|
|
|
||||||||||||||||||||
|
22 k |
22 k |
22 k |
0.47 |
1 |
0.47 |
1 |
0.47 |
1.2 k |
|
|
22 k |
|
|
|
|
2.2 |
|
|
0.47 |
|
24 k |
4.7 |
|
|
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||||
|
|
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|
|
2200p |
0.1 |
0.1 |
|
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|
||||||||||||||||
|
SW18 |
SW19 SW20 |
|
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R36 |
R37 |
R38 |
|
R39 |
R40 |
R41 |
|||||||||||||||
|
|
|
R68 |
R69 |
R7 |
|
OFF |
|
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0.1 |
|
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|||||
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SW24 C11 |
|
C9 |
C10 |
|
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R14 |
C17 |
|
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|||||
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|
5.1 k |
5.1 k |
10 k |
|
|
+ |
|
|
|
|
20 k |
R16 |
|
|
|
|
R42 |
R43 |
R44 |
|
R45 |
R46 |
R47 |
||||||
|
|
|
|
|
|
|
|
ON |
|
2.2 |
2200 p 2200 p |
|
|
|
|
|
1 |
|
|
|
|
|
||||||||||||
|
OFF ON b c |
ON OFF |
C32 |
|
|
|
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|
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|
|
100 k |
|
|
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|
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|
|||||||
|
|
|
|
100 |
|
|
|
|
TP1 |
|
TP2 |
R12 |
|
|
|
|
|
|
|
|
|
SW9 |
|
|
R15 |
R18 |
R48 |
R49 |
R50 |
|
R51 |
R52 |
R53 |
|
|
SW21 |
SW22 |
SW23 |
+ |
|
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10 k |
|
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||||||
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7.5 k |
|
|
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|
|
|
|
||||||
|
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|
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|
|
SW7 |
10 k |
|
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|
|
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|
|
R54 |
R55 |
R56 |
|
R57 |
R58 |
R59 |
||
|
S2 |
S3 S2 |
S3 S2 S3 |
|
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|||||||||
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|||||||||
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|||
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R70 |
|
R60 |
R61 |
R62 |
|
R63 |
R64 |
R65 |
|
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51k |
|
|
|
||||||
|
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R75 |
|
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|
|
|
VR |
|
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|
|
|
|
|
16 k |
|
|
|
|
|
EQ |
100k |
51 k |
51 k |
33 k |
33 k |
33 k |
||
|
SW3 |
|
|
|
|
|
|
AC VM 3 |
|
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|
REC |
|
SW11 |
|
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|||
|
RP |
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||||||
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PB |
|
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|||||
L |
|
PB |
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R |
L |
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R |
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LM |
|
|||||
|
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SW17 |
|
||||
ON |
|
EQ |
|
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|
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|
|
|
|
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|
EQ |
|
SW13 |
OFF |
|
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REC |
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||
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||
|
SW1 |
|
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PB |
|
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|
|
Audio SG |
|
AC VM 1 |
|
DC |
|
DC |
|
DC |
|
AC VM 4 |
|
Distortion |
|
Oscilloscope |
|
|
Noise meter |
|
|
|
|
Source 1 |
|
Source 2 |
|
Source 3 |
|
|
|
|
|
|
|||||||
|
|
|
|
|
|
|
|
|
analyzer |
|
|
|
|
|
|
|
|||
|
|
|
|
14 V |
|
|
|
5 V |
|
|
|
|
|
|
|
|
|
|
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|
|
|
|
|
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|
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|
|
|
Noise meter |
|||||||
|
|
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|
|||
|
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|
|
|
with CCIR/ARM filter |
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
and A–WTG filter |
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Notes |
1: Registor tolerance are ±1 % |
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2: Capacitor tolerance are ±1 % |
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3: Unit R:Ω |
C:F |
Circuit Test |
HA12155NT/HA12157NT |
|
|
57 of 7 page 1997, .Jun 4,.Rev
|
CN1 |
|
|
|
|
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|
STB |
1 |
|
|
PBI (L) |
|
|
|
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|
|
|
|
|
|
|
|
|
|
|
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|
|
PBOUT (L) |
|
|
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|
||||
|
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|||
CLK |
2 |
|
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RECOUT (L) |
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||
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RPI (L) |
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LMOUT (L) |
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|||||||
DATA |
3 |
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TP3 |
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||||||
DGND |
4 |
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R72 |
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EQIN (L) |
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TP4 |
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16 k |
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EQOUT (L) |
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||||||
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MPX |
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5 |
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ON/OFF |
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C/B |
6 |
|
|
VRI (L) |
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||
NR |
7 |
|
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|
|
R25 |
|
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R22 |
|
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||
|
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|
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|
10 k |
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|||||
ON/OFF |
|
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|
|
7.5 k |
|
|
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|
|
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|
|
VCC2 |
8 |
|
|
|
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|
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C30 |
|
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R20 |
R71 |
|
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|
||
(+5 V) |
|
|
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|
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|
R67 |
|
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|
+ |
2.2 |
|
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R19 |
|
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|||||
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|
C22 100 k 51 k |
|
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|
|
|
||||||||||
|
|
|
C60 |
|
|
C61 |
C62 |
|
R66 |
|
|
R28 |
|
|
|
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R21 |
|
|
|
|
10 k |
|
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|
|||||||||||
|
|
|
|
|
|
5.1 k |
|
|
|
|
|
|
|
C28 C29 |
|
|
|
|
|
|
|
|
1 |
|
|
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|
|
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|
|
||||||||||||
|
|
|
10p |
|
|
10p |
10p |
|
|
|
5.1 k |
|
|
10 k |
|
|
|
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|
20 k |
|
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||||
|
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|
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|
|
|
Degital GND |
|
|
2200 p 2200 p |
|
C27 |
C26 |
C25 |
|
C23 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||||||||
|
|
|
R4 |
R5 |
|
R6 |
|
C3 |
C33 |
C2 |
R29 |
C1 |
|
|
|
|
|
C24 |
0.1 |
|
|
|
C21 |
C20 |
|
|
|
|
|
|
|
|||||||||||||||
|
|
|
|
|
|
R27 |
R26 |
|
R24 |
R23 |
|
|
0.1 |
0.1 |
|
|
|
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|
||||||||||||||||||||||
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|
|||||||||||||||||||||
|
|
|
10 k |
10 k |
|
10 k |
|
+ 0.47 + |
1 |
+ 0.47 |
18 k+ |
0.47 |
|
|
2200 p |
+ 2.2 |
|
+ |
|
+ |
0.47 |
+ 0.47 |
|
|
|
|
|
|
||||||||||||||||||
|
|
|
|
|
|
|
|
|
2.4 k 5.6 k |
22 k |
560 |
|
|
|
|
|
|
|
|
|
|
|||||||||||||||||||||||||
|
|
|
64 |
63 |
62 |
61 |
60 |
59 |
58 |
57 |
56 |
55 |
|
54 |
53 |
52 |
51 |
|
50 |
49 |
|
48 |
|
47 |
|
46 |
45 |
44 |
|
43 |
42 |
41 |
40 |
39 |
38 |
37 |
36 |
35 |
34 |
33 |
||||||
|
|
|
DATA CLK |
STB |
GND |
VRI |
CNT |
RPI |
BIAS |
PBI |
DGND IAOUT NRIN |
Vref PBOUT SS1 |
SS2 |
CCR |
HLS |
LLS |
REC |
LM |
|
LM |
LM |
EQ |
GND |
EQ |
NN |
NC |
NM |
HN |
HC |
HM |
||||||||||||||||
|
|
|
|
|
|
|
(1) |
(L) |
(L) |
(L) |
|
|
(L) |
|
|
(L) |
(L) |
(L) |
(L) |
|
(L) |
(L) |
|
(L) |
|
DET (L) DET (L) OUT (L) IN (L) |
DET (L) OUT (L) |
IN (L) |
(2) |
OUT (L) |
|
|
|
|
|
|
|
|||||||||
|
|
|
|
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|
|
|
|
|
|
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|
|
|
|
|
|
HA12155/7 (REC 1 CHIP) |
|
|
|
DP-64S |
|
|
|
|
|
|
|
|
|
|||||||||||||
|
|
|
NR |
|
MPX |
|
VRI |
CNT |
PRI |
|
|
PBI |
|
IAOUT NRIN |
Vref PBOUT SS1 |
SS2 |
CCR |
HLS |
LLS |
REC |
LM |
|
LM |
LM |
EQ |
|
EQ |
|
|
|
|
|
|
|
||||||||||||
|
|
|
ON/OFF C/B ON/OFF VCC |
(R) |
(R) |
(R) |
REF |
(R) |
INJ |
|
(R) |
(R) |
(R) |
(R) |
(R) |
(R) |
|
(R) |
|
DET (R) DET (R)OUT (R) IN (R) DET (R)OUT (R) IN (R) |
IREF OUT (R) |
FM |
FQ |
FQ |
GH |
GL |
GP |
|||||||||||||||||||
|
|
|
1 |
2 |
|
3 |
4 |
5 |
6 |
7 |
|
8 |
9 |
10 |
|
11 |
12 |
13 |
14 |
|
15 |
16 |
|
17 |
|
18 |
|
19 |
20 |
21 |
|
22 |
23 |
24 |
25 |
26 |
27 |
28 |
29 |
30 |
31 |
32 |
||||
|
|
|
R1 |
R2 |
R3 |
|
C4 + C5 + C6 + C7 + |
C8 + |
R8 |
R9 |
R10 |
|
R11 |
R13 |
|
|
C12 |
C13 |
C14 |
C15 |
C16 |
+ |
C18 |
+ |
|
C19 |
R30 |
R31 |
R32 |
R33 |
R34 |
R35 |
||||||||||||||
|
|
|
0.47 |
1 |
0.47 |
1 |
0.47 |
|
2.4 k |
5.6 k |
22 k |
560 |
|
+ |
|
|
|
+ |
|
|
|
|
|
|
|
|||||||||||||||||||||
|
|
|
22 k |
22 k |
22 k |
|
*1 |
|
|
|
0.1 |
0.1 |
2.2 |
0.1 |
|
0.47 |
R17 |
4.7 |
R36 |
R37 |
R38 |
R39 |
R40 |
R41 |
||||||||||||||||||||||
|
|
|
|
|
|
|
|
|
C9 |
C10 |
|
2200 p |
|
|||||||||||||||||||||||||||||||||
|
|
|
|
|
|
|
|
|
R68 |
R69 |
|
|
R7 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
R14 |
|
C17 |
|
|
|
|
|
|
|
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
5.1 k |
5.1 k |
|
|
10 k |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
20 k |
|
|
|
|
|
R42 |
R43 |
R44 |
R45 |
R46 |
R47 |
|||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2200 p |
2200 p |
|
|
|
|
|
|
|
R16 |
|
|
|
|
|
|||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
+C11 |
|
|
|
|
|
|
|
|
|
1 |
100 k |
|
|
|
|
|
|
|
|
|
|
|
|||
|
|
|
VRI (R) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2.2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
R15 |
R18 |
R48 |
R49 |
R50 |
R51 |
R52 |
R53 |
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
R12 |
|
|
|
|
|
|
|
|
|
|
|
|
|
10 k |
|
|
|
|
|
|
|
|||||
|
|
|
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|
|
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|
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|
|
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
7.5 k |
|
R54 |
R55 |
R56 |
R57 |
R58 |
R59 |
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
10 k |
|
|
|
|
|
|
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|
|
|
|
|
|
|
||||||||||
|
|
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|
|
|
|||||||||
|
|
|
RPI (R) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
TP2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
R70 |
|
|
R60 |
R61 |
R62 |
R63 |
R64 |
R65 |
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
R75 |
|
|
|
51 k |
|
|
|
|
|
|
|
|
|
||
|
|
|
RBI (R) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
TP1 |
|
|
|
|
|
|
|
|
|
16 k EQIN (R) |
|
|
|
|
|
100 k 51 k |
51 k |
33 k |
33 k |
33 k |
||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
EQOUT (R) |
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
|
|
CN2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
RECOUT (R) |
|
|
|
|
|
LMOUT (R) |
|
|
|
|
||||
|
|
|
|
|
|
|
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|
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|
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||
|
GND |
1 |
+ |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
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|
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|
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|
|
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|
|
|
|
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|
|
|
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|
|
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
C34 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
VEE |
2 |
100 |
C32 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
PBOUT (R) |
|
|
|
|
|
|
|
|
|
|
|
|
||||
|
|
|
|
+ |
100 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
VCC1 |
3 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
|
|
|
|
|
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||
|
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Note 1: The pin 10 can connect to VCC 1 through R8.
The value of external resistor R8 is obtained by using following equations.
R8 = VINJ – VEE – 0.7 (kΩ )
3.6
Circuit Supply Split of Example
HA12155NT/HA12157NT
57of8page1997, .Jun 4,.Rev |
V |
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Controller Mode |
HA12155NT/HA12157NT |
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GND |
CC |
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+ |
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R3 |
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SW1 |
SW2 |
SW3 |
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C4 |
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1 M |
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R4 |
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R5 |
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1 |
NR•ON/OFF |
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100 |
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R2 |
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+ |
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22 K |
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22 K |
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JP1 |
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22 k |
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C1 2.2 |
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N13 IC8 |
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R 17 |
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R 1 |
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TRIGGER |
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N1 IC6 |
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PRQ |
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PR Q |
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JP2 |
6 |
C/B |
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D Q |
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Q |
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CLR |
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CLR |
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CLR |
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5 |
MPX•ON/OFF |
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CLR |
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D9 IC9 |
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JP3 |
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D1 |
IC2 |
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D2 |
IC2 |
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PR Q |
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QA QB Q C QD |
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SW9 |
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TRIGGER |
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N5 IC8 |
D3 IC3 |
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D Q |
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IC 1 |
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CLR |
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X'tal OSC |
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N2 IC8 |
N3 IC6 |
N4 IC8 |
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N11 IC8 N12 IC8 |
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MCLK |
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D8 |
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IC3 |
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R 22 |
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CLR |
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1M |
R 4 |
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1 |
STB |
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QA QB QC QD |
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510 |
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62.5 kHz SW10 |
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N6 IC6 |
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C2 |
X'tal |
C3 |
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125 kHz |
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D6 |
IC5 |
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10 p |
1 MHz |
120 p |
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250 kHz |
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D4 |
IC5 |
D5 |
IC5 |
4 |
GND |
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500 kHz |
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Q |
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Q |
Q |
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D Q |
D Q |
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D Q |
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R 7 |
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R 8 |
R 9 |
R 10 |
R 11 |
R 12 |
R 13 |
R 14 |
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CLR |
CLR |
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CLR |
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8 |
VCC (+5 V) |
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22 k |
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22 k |
22 k 22 k |
22 k |
22 k |
22 k |
22 k |
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N7 IC6 |
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2 |
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N8 IC7 |
CLK |
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SW8 SW7 SW6 SW5 SW4 SW3 SW2 |
SW1 |
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N9 IC7 |
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A B |
C D E F G |
H CLK CLK |
SHIFT |
N10 IC7 |
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INHIBITLOAD |
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Parts No. |
Type |
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QH |
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3 DATA |
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IC1 |
HD74HC221 |
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D7 |
IC4 |
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IC2 |
HD74HC74 |
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IC3 |
HD74HC393 |
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Notes 1: HC type IC which operate eqaully is also applicable instead of IC1-IC9. |
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IC4 |
HD74HC165 |
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IC5 |
HD74HC175 |
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2: As for IC1-IC9, input pins which are not used should be pulled up with resistor of 22 kΩ . |
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IC6 |
HD74HC00 |
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3: As for IC1-IC9, required to put 0.1 µ F-capacitor between near GND pin and Voltage source pin for bypass. |
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IC7 |
HD74HC00 |
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IC8 |
HD74HC04 |
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4: Unit R : Ω , C : F |
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IC9 |
HD74HC74 |
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HA12155NT/HA12157NT
Pin Description (VCC = 14 V, Ta = 25°C, No signal, the value in the table show typical value)
Pin No. |
Terminal |
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DC |
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DP-64S |
name |
Zin |
voltage |
Equivalent circuit |
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Description |
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7 |
RPI |
100 kΩ |
VCC/2 |
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Recording input |
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58 |
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9 |
PBI |
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56 |
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21 |
LM IN |
HA12155 |
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---75 kΩ |
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44 |
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HA12157 |
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---100 kΩ |
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24 |
EQ IN |
100 kΩ |
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41 |
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Play back input
Level meter input
Equalyzer input
5 |
VRI |
100 kΩ |
VCC/2 |
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Volume input |
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60 |
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+0.7 V |
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4 |
VCC |
— |
V CC |
— |
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Power supply |
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8 |
REF |
— |
V CC/2 |
— |
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Ripple filter |
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12 |
NR IN |
— |
V CC/2 |
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NR processor input |
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53 |
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15 |
SS 1 |
— |
V CC/2 |
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Spectral skewing amp |
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input |
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50 |
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Rev.4, Jun. 1997, page 9 of 57
HA12155NT/HA12157NT
Pin Description (VCC = 14 V, Ta = 25°C, No signal, the value in the table show typical value) (cont)
Pin No. |
Terminal |
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DC |
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DP-64S |
name |
Zin |
voltage |
Equivalent circuit |
Description |
||||
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17 |
CCR |
— |
V CC/2 |
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Current controled |
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48 |
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resistor output |
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11 |
IA OUT |
— |
V CC/2 |
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Input amp output |
54 |
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VCC |
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GND |
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13 |
VREF |
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Reference voltage |
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52 |
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buffer output |
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14 |
PB OUT |
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Play back (Decode) |
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51 |
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output |
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16 |
SS 2 |
|
Spectral skewing |
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49 |
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amp. output |
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20 |
REC OUT |
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Recording (Encode) |
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45 |
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output |
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26 |
EQ OUT |
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Equalyzer output |
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39 |
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|
Rev.4, Jun. 1997, page 10 of 57
HA12155NT/HA12157NT
Pin Description (VCC = 14 V, Ta = 25°C, No signal, the value in the table show typical value) (cont)
Pin No. |
Terminal |
|
DC |
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|
DP-64S |
name |
Zin |
voltage |
Equivalent circuit |
Description |
|||||||||
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18 |
HLS DET |
— |
2.3 V |
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Time constant pin for |
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47 |
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rectifier |
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19 |
LLS DET |
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46 |
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57 |
BIAS |
— |
0.28 V |
Dolby NR Reference |
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current input |
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GND |
25 |
IREF |
— |
1.2 V |
EQ Reference current |
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input |
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27 |
FM |
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EQ Parameter current |
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28 |
fQ |
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input |
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29 |
f/Q |
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30 |
GH |
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31 |
GL |
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32 |
GP |
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Rev.4, Jun. 1997, page 11 of 57
HA12155NT/HA12157NT
Pin Description (VCC = 14 V, Ta = 25°C, No signal, the value in the table show typical value) (cont)
Pin No. |
Terminal |
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DC |
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DP-64S |
name |
Zin |
voltage |
Equivalent circuit |
Description |
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33 |
HM |
— |
— |
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EQ Parameter |
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GND |
selector |
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34 |
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35 |
HN |
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36 |
NM |
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37 |
NC |
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38 |
NN |
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6 |
CNT |
5.2 kΩ |
VCC/2- |
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DAC output Volume |
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VCC / 2 |
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59 |
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1.5 V to |
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control input |
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VCC/2 |
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DAC |
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out |
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22 |
LMD |
— |
0.2 V |
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Time constant Pin for |
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43 |
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level meter |
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LM OUT
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GND |
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LMD |
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23 |
LM OUT — |
0.2 V |
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Level meter output |
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42 |
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Rev.4, Jun. 1997, page 12 of 57
HA12155NT/HA12157NT
Pin Description (VCC = 14 V, Ta = 25°C, No signal, the value in the table show typical value) (cont)
Pin No. |
Terminal |
|
DC |
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|
DP-64S |
name |
Zin |
voltage |
Equivalent circuit |
|
Description |
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1 |
NR |
100 kΩ |
— |
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Mode control input |
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ON/OFF |
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D - GND |
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GND |
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2 |
C/B |
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3 |
MPX |
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ON/OFF |
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62 |
STB |
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63 |
CLK |
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64 |
DATA |
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10 |
INJ |
— |
0.7 V |
— |
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Injection current input |
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for I2L |
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55 |
D-GND |
— |
0.0 V |
— |
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Digital (Logic) ground |
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40 |
GND |
— |
0.0 V |
— |
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Ground |
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61 |
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Application Note
Power Supply Range
HA12155NT/HA12157NT are designed to operate on either single supply or split supply.
The operating range of the supply voltage is shown in table 1.
Table 1 |
Supply Voltage |
|
Type No. |
Single supply |
Split supply |
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|
|
HA12155NT |
9.5 V to 16 V |
±6 V to 8 V |
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HA12157NT |
12 V to 16 V |
±6 V to 8 V |
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The lower limit of supply voltage depends on the line output reference level.
Rev.4, Jun. 1997, page 13 of 57
HA12155NT/HA12157NT
The minimum value of the headroom margin is specified as 12 dB by Dolby Laboratories. HA12155 series are provided with two line output level, which will permit an optimum headroom margin for power supply conditions.
Reference Voltage
For the single supply operation these devices provide the reference voltage of half the supply voltage that is the signal grounds. As the peculiarity of these devices, the capacitor for the ripple filter is very small about 1/100 compared with their usual value. The Reference voltage are provided for the left channel and the right channel separately. The block diagram is shown as figure 1.
|
52 |
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VCC |
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+ |
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– |
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L channel |
|
reference |
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R channel |
8 |
reference |
+ |
– |
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1 F |
+ |
|
13 |
Figure 1 The Block Diagram of Reference Voltage Supply
Operating Mode Control
HA12155NT/HA12157NT provides fully electronic switching circuits. NR-ON/OFF, C/B, and MPX ON/OFF switches are controlled by parallel data (DC voltage) and other switches are controlled by serial data.
Rev.4, Jun. 1997, page 14 of 57
|
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|
HA12155NT/HA12157NT |
Table 2 Threshold Voltage (VTH) |
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Pin No. |
Lo |
Hi |
Unit |
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1, 2, 3 |
–0.2 to 1.0 |
3.5 to 5.3 |
V |
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62, 63, 64 |
–0.2 to 1.0 |
3.5 to 5.3 |
V |
Notes: 1. Voltages shown above are determined by internal circuits of LSI when take pin 55 (DGND pin) as reference pin. On split supply use, same VTH can be offered by connecting DGND pin to GND pin.
This means that it can be controlled directly by micro processor. 2. Each pins are on pulled down with 100 kΩ internal resistor.
Therefore, it will be low-level when each pins ar open.
3.Note on serial data inputting
(a)The clock frequency on CLK must be less than 500 kHz.
(b)Over shoot level and under shoot level of input signal must be the value shown below.
(c)The serial input pins (pins 62, 63, and 64) are extremely sensitive to undershoot, overshoot, ringing, and noise. This can result in malfunctions due to problems with the wiring pattern. We recommend attaching capacitors in parallel with the serial input pins to ameliorate this problem.
Figure 2-b shows an example of this circuit appropriate when the clock frequency is 500 kHz. The value of the capacitor should be set in accordance with the clock frequency actually used.
4.NR Mode Switching
In actual use, pop noises may accompany NR on/off switching in C mode. To avoid these noises, use the following sequences to turn NR on and off.
From C mode NR off to C mode NR on:
(C mode, NR off) → |
(B mode, NR off) → |
(B mode, NR on) → |
(C mode, NR on). |
From C mode NR on to C mode NR off: |
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(C mode, NR on) → |
(B mode, NR on) → |
(B mode, NR off) → |
(C mode, NR off). |
Table 3 |
|
Switching Truth Table |
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Pin No. |
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Lo |
Hi |
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1 |
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NR-OFF |
NR-ON |
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2 |
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B-NR |
C-NR |
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3 |
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MPX-ON |
MPX-OFF |
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Notes: 1. |
Low level will be offered when each pins are open. |
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2. |
Please refer to next term as for the serial data for formatting. |
|
When connecting microcomputer or Logic-IC with HA12155NT/HA12157NT directly, there is apprehension of rash-current under some transition timming of raising voltage or falling voltage at VCC ON/OFF.
For this countermeasure, connect 10 kΩ to 20 kΩ resistor with each pins. It is shown in test circuit.
Rev.4, Jun. 1997, page 15 of 57
HA12155NT/HA12157NT
under 5.3 V
0 within –0.2 V
Figure 2 Input Level
Serial Data Formatting
8 bit shift register is employed. CLK and DATA are stored during STB being high and data is ratched when STB goes high to low. The clock frequency on CLK must be less than 500 kHz.
CLK |
5 V |
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0 V |
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DATA |
5 V |
0 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
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0 V |
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STB |
5 V |
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0 V |
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latch of data |
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Figure 3 Serial Data Timming Chart
Rev.4, Jun. 1997, page 16 of 57
HA12155NT/HA12157NT
Table 4 Serial Data Formatting
Bit |
Control |
Volume register |
No. |
register |
|
0 |
TAPE |
H |
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DAC0 |
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SELECT 1 |
L |
TS1 |
H |
L |
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TS2 |
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H |
TAPE IV |
TAPE I |
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L |
TAPE II |
TAPE I |
1 |
TAPE |
H |
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DAC1 |
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SELECT 2 |
L |
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2 |
TAPE |
H |
High (double) speed selection |
DAC2 |
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SPEED |
L |
Normal speed selection |
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3 |
METER |
H |
Meter sensitivity 20 dB up |
DAC3 |
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SENSITIVITY |
L |
Meter sensitivity normal |
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4 |
INPUT |
H |
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DAC4 |
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SELECT 1 |
L |
IS2 |
IS1 |
H |
L |
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bit No. |
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5 |
4 |
3 |
2 |
1 |
0 |
gain |
L |
L |
L |
L |
L |
L |
increase |
L |
L |
L |
L |
L |
H |
|
L |
L |
L |
L |
H |
L |
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L |
L |
L |
L |
H |
H |
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H H H H L H |
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H |
H |
H |
H |
H |
L |
decrese |
|
H |
H |
H |
H |
H |
H |
mute |
*mute is implemented when all bits are high.
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H |
PB I |
VR I |
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L |
RP I |
VR I |
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5 |
INPUT |
H |
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DAC 5 |
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SELECT 2 |
L |
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6 |
REC/PB |
H |
PB mode selection |
R/L SELECT H |
Rch register selection |
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L |
REC mode selection |
|
L |
Lch register selection |
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7 |
REGISTER |
H |
Control register selection |
REGISTER L |
Volume register selection |
|||
|
SELECT |
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SELECT |
|
Note: TAPE I: Normal tape, TAPE II: Chrome tape, TAPE IV: Metal tape
Rev.4, Jun. 1997, page 17 of 57
HA12155NT/HA12157NT
Input Block Diagram and Level Diagram
–3 dB
|
|
IA |
MPX |
NR |
PB - OUT |
|
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||||
|
|
OUT |
Filter |
lN |
HA12155 |
|
|
RPI PBI |
|
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580 mVrms |
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(–2.5 dBs) |
|
|
43 mVrms |
43 mVrms |
426 mVrms |
300 mVrms |
HA12157 |
|
|
(–25.2 dBs) |
(–25.2 dBs) |
(–5.2 dBs) |
(–8.2 dBs) |
775 mVrms |
|
|
|
|
|
(0 dBs) |
||
VRI |
|
Input |
MPX ON |
MA |
NR |
|
Elect- |
Amp |
MPX OFF |
||||
|
circuit |
|||||
|
rical |
|
|
|||
|
|
– 3 dB |
|
|
||
47 mVrms |
VR |
|
|
|
||
|
|
|
|
|
||
(–24.3 dBs) |
|
|
|
|
|
The each level shown above is typical value when b) REC mode offering Dolby level to test point pin (NR IN) with
the gain of electrical volume is under the condition of max.
|
|
IA |
MPX |
NR |
PB - OUT |
|
|
|
|||
|
|
OUT |
Filter |
lN |
HA12155 |
|
RPI PBI |
|
|
580 mVrms |
|
|
|
|
|
|
(–2.5 dBs) |
|
30 mVrms |
30 mVrms |
300 mVrms |
|
HA12157 |
|
(–28.2 dBs) |
(–28.2 dBs) |
(–8.2 dBs) |
|
775 mVrms |
|
|
|
|
|
(0 dBs) |
VRI |
Elect- |
Input |
|
MA |
NR |
|
Amp |
|
|
circuit |
|
|
rical |
|
|
|
|
|
VR |
|
|
|
|
33 mVrms |
|
|
|
NR circuit |
|
(–27.4 dBs) |
|
|
|
||
|
|
|
|
|
The each level shown above is typical value when a) PB mode offering Dolby level to test point pin (IA OUT) with the gain of electrical volume is under the condition
of max.
Figure 4 Input Block Diagram
Rev.4, Jun. 1997, page 18 of 57