HIT HA12157NT, HA12155NT Datasheet

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 vo lu me 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 Co r por ation is required for the use of this IC.

Ordering Information

Operating voltage

Type Package Dolby Level REC-OUT Level PB-OUT Level Min Max

HA12155NT DP-64S 300 mVrms 300 mVrms 580 mVrms 9.5 V 16 V
HA12157NT 775 mVrms 12 V 16 V

Rev.4, Jun. 1997, page 2 of 57

Block Diagram

LM

EQ

OUT(L)

GND

(2)

OUT(L)

LM

IN(L)

EQ

HC

NN NC NM HN

IN(L)

HM

HA12155NT/HA12157NT

RECT

32321
31
30
29

FM fQ f/Q GH GL GP

26 27 28
25

EQ

EQ

IREF

IN(R)

LM

OUT(R)

LM

OUT(R)

IN(R)

33
34

36 35
37
38
39

REC

EQ

41 40
42
43

RECT

LMA

+

–

REC

EQ

+

–

LMA

EQ-Controller

REC

OUT(L)

PB OUT

(L)

Vref

NRIN

IA OUT

(L)

DGND

PBI

(L)

RPI

(L)

CNT

(L)

VRI

(L)

GND

(1)

(L)

(L)

M

BIAS

DATA CLK STB

REC

PBOUT

NRIN

(R)

X

INJ

PBI
REF

RPI
CNT
VRI

CC

V

MPX

C/B

NR

(R)

Vref

(R)

IA OUT

(R)

(R)

(R)
(R)
(R)

ON/OFF

ON/OFF

OUT(R)

19 20 21 22 23 24
47 46 45 44
48

Dolby B/C NR

51 50 49
52
53

P

X

54

6BIT

Shift

register

IA

DAC

Latch

E VOL

Decoder

55

58 57 56
59
60
61
62

64 63

Dolby B/C NR

IA

6BIT

E VOL

BIAS

SW

DAC

18

17

13 14 15 16

M

6 7 8 9 10 11 12

45

P

Rev.4, Jun. 1997, page 3 of 57

HA12155NT/HA12157NT

Absolute Maximum Ratings

Item Symbol Ratings Unit

Supply voltage V

CC

Power dissipation*1 Pd 770 mW
Operating temperature Topr –30 to +75 °C
Storage temperature Tstg –55 to +125 °C
Note: 1. Value at Ta ≤ 75°C

Electrical Characteristics (Ta = 25°C VCC = 14 V Dolby level 300 mVrms)

Item Symbol Min Typ Max Unit Test conditions Notes

Quiescent current I
Input amp gain G

Q

RPI 18.5 20.0 21.5 dB Vin = 0 dB, f = 1 kHz

VIA

G

PBI 18.5 20.0 21.5

VIA

B-type NR Encode Boost B-ENC-2K 2.8 4.3 5.8 dB Vin = –20 dB, f = 2 kHz

B-ENC-5K 1.7 3.2 4.7 Vin = –20 dB, f = 5 kHz

C-type NR Encode Boost C-ENC-1K(1) 3.9 5.9 7.9 dB Vin = –20 dB, f = 1 kHz

C-ENC-1K(2) 18.1 19.6 21.6 Vin = –60 dB, f = 1 kHz
C-ENC-700 9.8 11.8 13.8 Vin = –30 dB, f = 700 Hz

Signal handling Vomax 12.0 13.0 — dB f = 1 kHz, THD = 1%,

Signal to noise ratio S/N 60.0 63.0 — dB Rg = 5.1 kΩ, CCIR/ARM
Total harmonic distortion THD — 0.08 0.3 % Vin = 0 dB, f = 1 kHz
Crosstalk CT (R↔L) — –85.0 –79.0 dB Vin = 0 dB, f = 1 kHz

CT (RPI↔PBI) — –80.0 –74.0

CT (VRI↔RPI) — –77.0 –71.0
Control Hi level V
voltage Lo level V
Serial data Hi level V
voltage Lo level V

cH

cL

sH

sL

PB-out level HA12155 Vout 500 580 670 mVrms Vin = 0 dB, f = 1 kHz

HA12157 665 775 900
PB-offset Vofs –100 0.0 +100 mV no signal
Channel balance ∆G
Volume gain G

VVR (MAX)

G

VVR (MIN)

V

— 29.0 37.0 mA no signal

3.5 — 5.3 V MPX ON/OFF, NR
–0.2 — 1.0 ON/OFF C-NR/B-NR

3.5 — 5.3 V CLK, DATA, STB
–0.2 — 1.0

–1.0 0.0 1.0 dB Vin = 0 dB, f = 1 kHz

17.5 19.3 21.5 dB Vin = 100 mVrms, f =1 kHz
— — –55.0 Vin = 3 Vrms, f = 1 kHz

16 V

V

= 12 V

CC

*1

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 Unit Test conditions Notes

Volume mute G

VVR (MUT)

Max-input level to volume Vin max (VR) 11.0 12.6 — dBs f = 1 kHz, THD = 1%,

Volume S/N S/N (VR) 78.0 84.0 — dB Vin = 100 mVrms, f = 1

Volume THD THD (VR) — 0.04 0 .3 % Vin = 100 mVrms, f = 1

Equalizer gain G

V EQ (500)

G

V EQ (1K)

G

V EQ (5K)

G

V EQ (10K)

G

V EQ (20K)

Equalizer maximum input Vin max (EQ) –8.0 –7.0 — dBs f = 1 kHz, THD = 1%,

Equalizer S/N S/N (EQ) 57.0 62.0 — dB Rg = 5.1 kΩ, A-WTG
Equalizer THD THD (EQ) — 0.2 0.5 % Vin = 77.5 mVrms,

Equalizer offset Vofs (EQ) –400 0.0 +400 mV no signal
Level meter output LM (0 dB) 2.60 2.85 3.10 V Vin = 0 dB, f = 1 kHz *2

LM (12 dB) 3.60 3.90 4.20 V Vin = 12 dB, f = 1 kHz

Level meter output LM (–20 dB)1 0.80 1.10 1.40 V Vin = –20 dB, f = 1 kHz *2

LM (–20 dB)2 2.55 3.0 3.15 V Vin = –20 dB, f = 1 kHz,

Level meter offset LMofs 1 — 150 300 mV no signal

LMofs 2 — 200 350 no signal, –20 dB range

Notes: 1. HA12155 VCC = 9.5 V, HA12157 VCC = 12 V

2. 0 dB = PB-OUT level

— — –80.0 dB Vin = 3 Vrms, f = 1 kHz

V

= 12 V

CC

kHz, A-WTG

kHz

13.0 15.0 17.0 dB Vin = 77.5 mVrms,
f = 500 Hz

13.0 15.0 17.0 Vin = 77.5 mVrms,
f = 1 kHz

14.5 16.5 18.5 Vin = 77.5 mVrms,
f = 5 kHz

18.5 20.5 22.5 Vin = 77.5 mVrms,
f = 10 kHz

29.5 32.0 34.5 Vin = 77.5 mVrms,
f = 20 kHz

= 12 V

V

CC

f = 1 kHz

–20 dB range

*1

Rev.4, Jun. 1997, page 5 of 57

HA12155NT/HA12157NT

Test Circuit

SW16

R

SW15

ON OFF

L

SW14

LM

PB

DC VM 2

EQ

REC

Mode

controller

SW12

PB

REC

R72

AC VM 2

EQ

EQ

16 k

PB

R22

R25

10 k

SW8

SW4

RP

7.5 k

L

TP3 TP4

SW10

C30

R19

10 k

µ

C20

4.7

+

µ

C21

0.47

R71

51 k

R20

100 k

++

µ

µ

1

C23

C22

0.1

µ

R21

20 k

2.2

C24

+

µ

0.1

µ

0.1

C27 C26 C25

2200p

R23

C29

2200p

µ

2200p

R24

2.2

C28

+

SW25

R26

R27

ON

OFF

Degital

GND

µ

C1

R28

10 k

0.47

R29

18 k

µ

R66

5.1 k

C2

+

µ

1 0.47

C33

R67

5.1 k

+

C3

µ

++

0.47

C62

10p

3

R6

10 k

R5

VR

10k

10p

C61

R4

10p

C60

560

22 k

5.6 k

2.4 k

10 k

33

34

GL GP

36 35

NN NC NM HN HC HM

38 37

52 51 50 49 48 47 46 45 44 43 42 41 40 39

54 53

55

58 57 56

59

64 63 62 61 60

FM FQ F/Q GH

EQ

OUT(R)

EQ

OUT(L)

IREF

GND

(2)

EQ

IN(R)

EQ

IN(L)

LM

OUT(R)

LM

OUT(L)

LM

DET(R)

LM

DET(L)

LM

IN(R)

LM

IN(L)

REC

OUT(R)

REC

OUT(L)

DP-64S

LLS

DET(R)

LLS

DET(L)

HLS

DET(R)

HLS

DET(L)

CCR

(R)

CCR

(L)

SS2

(R)

SS2

(L)

SS1

(R)

SS1

(L)

PBOUT

(R)

PBOUT

(L)

HA12155/7 NT (REC 1 CHIP)

REF

REF

V

(R)

V

(L)

NRIN

(R)

NRIN

(L)

IA OUT

(L)

IA OUT

(R)
INJ

DGND

PBI

(R)

PBI

(L)

REF

BIAS

RPI

(L)

RPI

(R)

CNT

(L)

CNT

(R)

VRI

(R)

VRI

(L)

CC

V

GND

(1)

MPX

ON/OFF

C/B

DATA CLK STB

NR

ON/OFF

32

29

28 30 31

R30 R31 R32 R33 R34 R35

µ

C19

4.7

+

26 27

25

R17

24 k

+

24

C18

23

+

22

C16

21

µ

+

C15

20

19

18

17

C12 C13 C14

16

R13

560

15

R11

22 k

13 14

R10

5.6 k

12

R9

2.4 k

11

R8

1.2 k

10

+

µ

C8

0.47

+

89

µ

C7

1

+

7

µ

C6

0.47

+

6

µ

C5

1

+

µ

C4

0.47

345

R3

22 k

2

R2

22 k

1

R1

22 k

R36 R37 R38 R39 R40 R41

R42 R43 R44 R45 R46 R47

µ

0.47

R16

µ

1

µ

C17

0.1

R14

20 k

2.2

µµ

0.1 0.1

2200p

2200 p

C10

2200 p

C9

+

C11

SW24

OFF

R7

10 k

R69

5.1 k

R68

5.1 k

SW19 SW20

SW18

100 k

µ

2.2

ON

C32

OFF
ON

cb

ON

OFF

µ

100

R48 R49 R50 R51 R52 R53

R18

R15

SW9

TP2TP1

10 k

7.5 k

R12

+

SW22

SW21 SW23

10 k

SW7

SW13

Noise meter

with CCIR/ARM filter

and A–WTG filter

LM

EQ

REC

L

SW17

100k 51 k 51 k 33 k 33 k 33 k

R

SW11

EQ

PB

REC

R61 R62 R63 R64 R65

R54 R55 R56 R57 R58 R59

R60

R70

51k

Noise meter

PB

Oscilloscope

Distortion

analyzer

Ω

Notes 1: Registor tolerance are ±1 %

2: Capacitor tolerance are ±1 %

3: Unit R: C:F

AC VM 4

R75

16 k

AC VM 3

DC

Source 3

DC

Source 2

14 V 5 V

DC

S3
S2
S3

PB

RP

VR

SW3

EQ

OFF

R

ON

L

S2 S3 S2

Source 1

SW1

Audio SG AC VM 1

Rev.4, Jun. 1997, page 6 of 57

Example of Split Supply Circuit

EQOUT (L)

LMOUT (L)

R19

10 k

C20

R22

PBOUT (L)

PBI (L)

RECOUT (L)

EQIN (L)

R72

TP3

RPI (L)

16 k

TP4

VRI (L)

R25

7.5 k

10 k

C30

R71

R20

2.2µ

51 k

100 k
C22

+

R67

1µ

R21

C29C28

R28

R66

5.1 k

C62

C61

C60

C23

20 k

C26 C25

C27

2200 p 2200 p

Degital GND

10 k

C1

5.1 k

C33 C2

C3

10p

10p

10p

C21

C24

R29

R6

R5

R4

0.1µ

0.1µ 0.1µ

2200 p

R23

R24

R26

R27

10 k

10 k

10 k

NN NC NM HN HC HM

0.47µ

EQ

+

OUT (L)
(2)

GND

0.47µ

EQ

+

IN (L)

LM

OUT (L)

LM

DET (L)

LM

IN (L)

2.2µ

REC

++

OUT (L)

LLS

DET (L)

HLS

DET (L)

(L)

CCR

(L)

SS2

560

(L)

SS1

22 k

(L)

PBOUT

(L)

Vref

5.6 k

2.4 k

0.47µ

+

18 k

0.47µ

+

1µ

0.47µ

++

HA12155/7 (REC 1 CHIP) DP-64S

(L)

NRIN

(L)

DGND IAOUT

(L)

BIAS PBI

(L)

RPI

(L)

CNT

(L)

VRI

(1)

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

R35

R34

R33

R32

R31

R30

+

4.7 µ

C19

EQ

OUT (R) FM FQ FQ GH GL GP

IREF

++

EQ

IN (R)

C18

LM

OUT (R)

LM

DET (R)

C16

LM

IN (R)

+

C15

2.2 µ

REC

OUT (R)

LLS

DET (R)

HLS

DET (R)

(R)

CCR

C12 C13 C14

(R)

SS2

R13

560

(R)

SS1

R11

22 k

(R)

PBOUT

(R)

Vref

R10

5.6 k

(R)

NRIN

R9

2.4 k

(R)

IAOUT

R8

PBI

(R) INJ

(R) REF

PRI

++++

(R)

CNT

C5 C6 C7 C8

1µ 0.47µ 1µ 0.47µ

+

(R)

VRI

C4

0.47µ

CC

MPX

ON/OFF V

R3

22 k

R2

22 k

1234567891011121314151617181920212223242526272829303132

NR

ON/OFF C/B

R1

22 k

R41

R40

R39

R38

R37

R36

R17

0.47µ

0.1 µ 0.1 µ

2200 p

*1

HA12155NT/HA12157NT

R47

R53

R59

R65

R46

R52

R58

R64

R45

R51

R57

R63

R44

R50

R56

R62

R43

R49

R55

R61

EQOUT (R)

R42

R48

R54

R60

R18

10 k

R15

7.5 k
R70

51 k

R16

100 k

1 µ

C17

0.1 µ

R12

R75

10 k

C9 C10

R14

20 k

2200 p2200 p

C11
+

2.2 µ

TP2

R7

10 k

R69

5.1 k

R68

5.1 k

VRI (R)

RPI (R)

100 k 51 k 51 k 33 k 33 k 33 k

EQIN (R)

16 k

TP1

RBI (R)

LMOUT (R)

RECOUT (R)

PBOUT (R)

C34

100µ

+

CC

Ω

3.6

INJ EE

V – V – 0.7

R8 = (k )

The value of external resistor R8 is obtained by using following equations.

Note 1: The pin 10 can connect to V 1 through R8.

C32

100µ

+

CN1

1

STB

2

CLK

3

DATA

4

5

MPX

DGND

ON/OFFNRON/OFF

1

2

GND

3

1

EE

CC

V

V

CN2

6

7

8

2

C/B

CC

V

(+5 V)

Rev.4, Jun. 1997, page 7 of 57

HA12155NT/HA12157NT

Mode Controller

CC

V (+5 V)

GND

SW1 SW2 SW3

+

3

R

NR•ON/OFF

1

JP1

5

R

22 K

4

R

22 K

2.2 µ

+

1 M

2

R

22 k

µ

4

C

100

17

R

N13 IC8

N1 IC6

PR

PR

TRIGGER

Q

1

C

1

R

C/B

6

22 k

Q

Q

22 k

JP2

Q
D

Q
D

Q

MPX•ON/OFF

5

CLR

CLR

CLR

CLR

JP3

9

D IC9

Q

Q
D

PR

D

Q

C

Q

B

Q

A

Q

2

D IC2

1

D IC2

TRIGGER

SW9

CLR

3

D IC3

N5 IC8

IC 1

N3 IC6 N4 IC8

N2 IC8

X'tal OSC

N11 IC8 N12 IC8

MCLK

8

D IC3

STB

1

GND

4

CC

CLK

V (+5 V)

8

2

DATA

3

N8 IC7

6

D IC5

N6 IC6

Q

Q
D

5

D IC5

Q

Q
D

4

D IC5

Q

Q
D

CLR

CLR

CLR

N7 IC6

N9 IC7

N10 IC7

Ω

µ

H

Q

SHIFT

LOAD

CLK

SW10

62.5 kHz

125 kHz

250 kHz

500 kHz

3

C

2

C

X'tal

120 p

1 MHz

10 p

14

R

22 k

13

R

22 k

12

R

22 k

11

R

22 k

10

R

22 k

9

R

22 k

8

R

22 k

7

R

22 k

D

Q

C

Q

B

Q

A

Q

CLR

4

R

510

22

R

1M

SW1

SW7 SW6 SW5 SW4 SW3 SW2

SW8

INHIBIT

CLK

ABCDEFG H

Type

Parts No.

Ω

7

D IC4

4: Unit R : , C : F

2: As for IC1-IC9, input pins which are not used should be pulled up with resistor of 22 k .

3: As for IC1-IC9, required to put 0.1 F-capacitor between near GND pin and Voltage source pin for bypass.

Notes 1: HC type IC which operate eqaully is also applicable instead of IC1-IC9.

HD74HC221

HD74HC74

HD74HC393

HD74HC165

HD74HC175

HD74HC00

HD74HC00

HD74HC04

HD74HC74

IC1

IC2

IC3

IC4

IC5

IC6

IC7

IC8

IC9

Rev.4, Jun. 1997, page 8 of 57

HA12155NT/HA12157NT

Pin Description (VCC = 14 V, Ta = 25°C, No signal, the value in the table show typical

value)

Pin No. Terminal DC
DP-64S name Zin voltage Equivalent circuit Description

7 RPI 100 kΩ VCC/2 Recording input
58

9 PBI Play back input
56
21 LM IN HA12155

---75 kΩ

44 HA12157

---100 kΩ
24 EQ IN 100 kΩ Equalyzer input
41
5 VRI 100 kΩ VCC/2 Volume input
60 +0.7 V
4VCC—VCC— Power supply
8REF—V
12 NR IN — VCC/2 NR processor input
53

/2 — Ripple filter

CC

Level met er input

15 SS 1 — VCC/2 Spectral skewing amp

input

50

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 DC
DP-64S name Zin voltage Equivalent circuit Description

17 CCR — VCC/2 Current controled
48 resistor output

11 IA OUT — VCC/2 Input amp output
54

V

CC

GND

13 VREF Reference voltage
52 buffer output
14 PB OUT Play back (Decode)
51 output
16 SS 2 Spectral skewing
49 amp. output
20 REC OUT Recording (Encode)
45 output
26 EQ OUT Equalyzer output
39

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
DP-64S name Zin voltage Equivalent circuit Description

18 HLS DET — 2.3 V Time constant pin for
47 rectifier

19 LLS DET
46
57 BIAS — 0.28 V

GND

25 IREF — 1.2 V EQ Reference current

Dolby NR Reference
current input

input

27 FM EQ Parameter current
28 fQ input
29 f/Q
30 GH
31 GL
32 GP

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 DC
DP-64S name Zin voltage Equivalent circuit Description

33 HM — —

GND

34 HC
35 HN
36 NM
37 NC
38 NN
6 CNT 5.2 kΩ VCC/2- DAC output Volume
59 1.5 V to

/2

V

CC

V / 2

CC

EQ Parameter
selector

control input

DAC

out

22 LMD — 0.2 V Time constant Pin for
43

LM OUT

GND

LMD

23 LM OUT — 0.2 V Level meter output
42

level meter

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
DP-64S name Zin voltage Equivalent circuit Description

1NR

ON/OFF

2C/B
3MPX

ON/OFF
62 STB
63 CLK
64 DATA
10 INJ — 0.7 V — Injection current input

55 D-GND — 0.0 V — Digital (Logic) ground
40 GND — 0.0 V — Ground
61

100 kΩ —

GND

D - GND

Mode control input

2

L

for I

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

HA12155NT 9.5 V to 16 V ±6 V to 8 V
HA12157NT 12 V to 16 V ±6 V to 8 V

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.

V

CC

+

–

8

+

1 F

µ

–

+

52

L channel
reference

R channel
reference

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

HA12155NT/HA12157NT

Table 2 Threshold Voltage (VTH)

Pin No. Lo Hi Unit

1, 2, 3 –0.2 to 1.0 3.5 to 5.3 V
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 V
pin.

This means that it can be controlled directly by micro processor.

2. Each pins are on pulled down with 100 kΩ inter nal resi stor.
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:
(C mode, NR on) → (B mode, NR on) → (B mode, NR off) → (C mode, NR off).

can be offered by connecting DGND pin to GND

TH

Table 3 Switching Truth Table

Pin No. Lo Hi

1 NR-OFF NR-ON
2 B-NR C-NR
3 MPX-ON MPX-OFF
Notes: 1. Low level will be offered when each pins are open.

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 V
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

CC

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.

5 V

CLK

0 V

STB

5 V
0 V
5 V
0 V

01234567

latch of data

DATA

Figure 3 Serial Data Timming Chart

Rev.4, Jun. 1997, page 16 of 57

HA12155NT/HA12157NT

Table 4 Serial Data Formatting

Bit

Control

No.

register

0 TAPE H DAC0

SELECT 1 L

1 TAPE H DAC1 *mute is implemented when all

SELECT 2 L bits are high.

2 TAPE H High (double) speed selection DAC2

SPEED L Normal speed selection

3 METER H Meter sensitivity 20 dB up DAC3

SENSITIVITY L Meter sensitivity normal

4 INPUT H DAC4

SELECT 1 L

Volume register

TS1

TS2

H

L

IS2

H

HL

TAPE

TAPE

IS1

HL

PB

IV

II

I

TAPE

TAPE

VR

bit No.

I

I

LLLLLL
LLLLLH

543210

gain

increase

LLLLHL
LLLLHH

HHHHLH
HHHHHL
HHHHHH

decrese

mute

I

VR

RP

L

I

I

5 INPUT H DAC 5

SELECT 2 L

6 REC/PB H PB mode selection R/L SELECT H Rch register selection

L REC mode selection L Lch register selection

7REGISTER

SELECT

H Control register selection REGISTER

SELECT

L Volume register selection

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 Lev e l Diagram

RPI PBI

IA
OUT

–3 dB

MPX
Filter

NR
lN

PB - OUT

HA12155
580 mVrms
(–2.5 dBs)

VRI

47 mVrms
(–24.3 dBs)

VRI

33 mVrms
(–27.4 dBs)

43 mVrms

(–25.2 dBs)

Elect-

rical

VR

30 mVrms

(–28.2 dBs)

Elect-

rical

VR

RPI PBI

43 mVrms

(–25.2 dBs)

Input

Amp

b) REC mode

30 mVrms

(–28.2 dBs)

Input

Amp

IA
OUT

426 mVrms

(–5.2 dBs)

MPX ON

300 mVrms

(–8.2 dBs)

MA

HA12157
775 mVrms
(0 dBs)

MPX OFF

– 3 dB

The each level shown above is typical value when
offering Dolby level to test point pin (NR IN) with
the gain of electrical volume is under the condition
of max.

MPX
Filter

300 mVrms

(–8.2 dBs)

NR
lN

PB - OUT

HA12157
775 mVrms
(0 dBs)

MA

NR circuit

NR

circuit

HA12155
580 mVrms
(–2.5 dBs)

NR

circuit

Rev.4, Jun. 1997, page 18 of 57

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

HA12155NT/HA12157NT

MPX ON/OFF Switch

MPX-OFF mode means that signal from input amp doesn’t go through the MPX filter, but signal goes
through the SS circuit after being attenuated 3 dB by internal resistor. Refer to figure 5. For not cause any
level difference between MPX-ON mode and MPX-OFF mode, it is requested to use MPX-filter which has
definitely 3 dB attenuated. MPX-OFF mode offer totally flat frequency response and no bias-trap effect.
And when applying other usage except figure 5, take consideration to give bias voltage to NR-IN terminal
by resistor or so on because internal of NR-IN terminal hsa no bias resistor.

5.6 k

MPX

2.4 k

Ω

IA OUT NR IN VREF

Ω

Vref

INPUT amp

+

–

+

–

3 dB ATT.

Vref

MPX ON

NR
PROCESSER

MPX OFF

Figure 5 MPX ON/OFF Switch Block Diagram

Application as for the Dubbing Cassette Deck

HA12155NT/HA12157NT series has unprocessor signal from recording out terminals during plyaback
mode. So, it is simply applied for dubbing cassette decks.

And HA12155NT/HA12157NT has three input term inal. So, it is applicable to switch the signal from PB­EQ as shown below.

Rev.4, Jun. 1997, page 19 of 57

HA12155NT/HA12157NT

A deck

PB EQ PB EQ

B deck

Compensation

of low

frequency

region

REC OUTPBIRPI

REC PB

EQ IN

VRIREC IN

HA12155 / 7

EQ OUT

PB OUT

Figure 6 Application for Dubbing Deck

Injector Current

2

HA12155NT/HA12157NT has logic circuit which is fabricated by I

L into IC. To operate this circuit, it is
required enough injector current. Injector current goes into from the INJ pin (pin 10) and external resistor
is required to connect to this pin for adequate current. The value of external resistor is obtained by using
following equations. And put them with ±10% tolerance value which is calculated. V
connect to V

shown below. Under the condition of high temperature, the mis-o peration of logic is caused

CC

can allow to

INJ

by large injector current. Also, under the condition of low temperature, the stop of logic is caused by small
injector current. Therefore, pay attention to have good stability of V

V

–0.7

INJ

INJ

=

3.6

[kΩ] ---- Single supply

R

.

INJ

V

INJ

=

INJ+VEE

R

INJ

R

–0.7

3.6

10

3.6 mA

V

INJ

40 61

a) Single supply use b) Split supply use

Rev.4, Jun. 1997, page 20 of 57

[kΩ] ---- Split supply

R

HA12155 / 7

V

INJ

V

EE

3.6 mA

Figure 7 Injector Current Application

INJ

10

HA12155 / 7

40 61

HA12155NT/HA12157NT

Gain Control of Electronic Volume

HA12155NT/HA12157NT is designed in order to change the gain by 6 bit DAC fabricated into IC. To
reduce the click noise when changing volume gain instantaneously, required to connect the capacitor (CR
time constant) to CNT pin (pin 6,59). These terminals are also be used as output pin of DAC. Therefore,
by forcing voltage or current to these terminals, it is applicable to control volume gain directly. But,
voltage forced to these terminals must be from V
case. In case of forcing the current these pins, voltage must be the value mentioned above even it is ±20%
distributed of internal resistor (5.2 kΩ) of CNT pin. And, these case, change of a gain depending on a
temperature gets large.

The Tolerances of External Components for Dolby NR-Block

For adequate Dolby NR tracking response, take external components shown below.

For smooth capacitors of C13, C14, C25 and C26, please employ a few object of the leak, though you can
be useful for an electrolytic capacitor.

/2 –2 V to VCC/2 (for split supply use, –2 V to 0 V) in this

CC

C28
2200 p

±±

5%

R29
18 k

±

2%

57 51 50 49 48 47 46

BIAS PB OUT

PB OUT

C9

Unit R :
C : F

Ω

2200 p

±

5%

R24

22 k

±

2%

(L)

(R)
14 15 16 17 18 19

R11

C29
2200 p
5%

R23
560

±

2%

SS1

SS1

22 k

±

2%

(L)

(R)

SS2

(L)

HA12155/7 (REC 1 Chip)

SS2

(R)

R13
560

±

2%

C10
2200 p

±

5%

CCR

(L)

CCR

(R)

C27
2200 p

±

5%

C12
2200 p
5%

Figure 8 Tolerances of External Components

C26

0.1

±±

10%

HLS

DET(L)

HLS

DET(R)

LLS

DET(L)

LLS

DET(R)

C13

0.1
10%

C25

0.1
10%

C14

0.1

µµ

±±±

10%

µµ

Level Meter

The coupling capacitor of LMIN pin (21 pin and 44 pin).

For these capacitors please employ a small object of the leak.

Rev.4, Jun. 1997, page 21 of 57

HA12155NT/HA12157NT

The Application of Equalizer Frequency Response

EQ
IN

R1

R2

+

OP1

_

R3

Transfer Function:

F / Q

OP6

_

Gm2

+

+
_

_
+

_
+

GL

Gm5

GH

Gm6

+

Gm1

_

+

Gm4

_

GP

FM

R4

C3

+

OP2

_

R5

+
_

OP7

Figure 9 REC Equalizer Block Diagram

C2

C1

_
OP5

+

+
_

Gm3

OP3

R8

R6

R7

+
_

R10

EQ
OUT

R9

_

OP4

+



R

Vout

Vin

R

2

=

R

2




4.16



=



R

REF




-----25 pin bias resistance

*R

REF

3



Gm5






1+6.67×10

R

GL

R

1+6.67×10



+

Rev.4, Jun. 1997, page 22 of 57

F/ Q







2

S









2



S




1

⋅

R

8

R

Gm4

10

9

+

1

−

10RFM

−

10

C3

Gm4

⋅

R

GL

R

FM

Gm5

R

GH

⋅

S

+

S

⋅

S

S

Gm1

+

RGP

⋅

R

R

4

10

+

R

R

6

7

1+4.5×10

R

R7

4

+

1

R

R

5

6

3.0×10

−

11

⋅

R

FQ

Gm6

C3

+

+

R

⋅S+

C2

Gm3

7

−

10

2.5×10

C2

Gm3

⋅

R

FQ

S

S

R

+

R

⋅

S

−

20

C1

4

Gm2C2Gm3

5

⋅

⋅

R

FQ

R

Gain

gl =

g2

g3

f1 =

f2

f3

BW =

Q =

=

=

=

=

g1

g2

g3

4.16

6.67×R

()

R

REF

4.16×R

4.16× R

GL

R

REF

GH

R

REF

2π×6.67×10

2π×6.67×10

1

⋅

2π

2.25×10

4π×2.78×10

f3

=3.51×

BW

HA12155NT/HA12157NT

3dB

BW

f1 f2 f3 f

Figure 10 REC Equalizer Frequency Response

+ R

GP

GH

1

−

10

×R

FM

R

GL

−

10

1

−

×RFM× R

0.3

−

21

×RFQ×R

10

×R

R

F/Q

R

F/Q

GH

F/Q

F/Q

Rev.4, Jun. 1997, page 23 of 57

HA12155NT/HA12157NT

35

Q

30

Quiescent Current vs. Supply Voltage

Quiescent current I (mA)

REC – C
REC – B
REC – OFF
PB – C
PB – B
PB – OFF

REC : VRI in (DAC Step 0)
LM : Normal

PB : PBI in (DAC Step 0)
LM : Normal

25

8 1012141618

Supply voltage Vcc (V)

Rev.4, Jun. 1997, page 24 of 57

12

HA12155NT/HA12157NT

Encode Boost vs. Frequency (HA12155)

NR–B RPI in RECOUT out

10

8

6

Encode Boost (dB)

4

2

0

100 200 500 1 k 2 k 5 k 10 k 20 k 50 k 100 k

Frequency (Hz)

16 V

9 V

: Vin = – 0 dB
: Vin = – 10 dB
: Vin = – 20 dB
: Vin = – 30 dB
: Vin = – 40 dB

14 V

Rev.4, Jun. 1997, page 25 of 57

HA12155NT/HA12157NT

25

NR-C RPI in RECOUT out

20

15

10

5

Encode Boost (dB)

0

–5

Encode Boost vs. Frequency (HA12155)

: Vin = 0 dB
: Vin = – 20 dB
: Vin = – 30 dB
: Vin = – 40 dB
: Vin = – 60 dB

16 V

14 V

9 V

–10

100 200 500 1 k 2 k 5 k 10 k 20 k 50 k 100 k

Frequency (Hz)

Rev.4, Jun. 1997, page 26 of 57

HA12155NT/HA12157NT

12

NR-B RPI in RECOUT out

10

8

6

Encode Boost (dB)

4

2

0

100 200 500 1 k 2 k 5 k 10 k 20 k 50 k 100 k

Encode Boost vs. Frequency (HA12157)

16 V

11 V

14 V

: Vin = 0 dB
: Vin = – 10 dB
: Vin = – 20 dB
: Vin = – 30 dB
: Vin = – 40 dB

Frequency (Hz)

Rev.4, Jun. 1997, page 27 of 57

HA12155NT/HA12157NT

25

NR-C RPI in RECOUT out

20

15

10

5

Encode Boost (dB)

0

– 5

– 10

100 200 500 1 k 2 k 5 k 10 k 20 k 50 k 100 k

Encode Boost vs. Frequency (HA12157)

16 V

14 V

11 V

: Vin = – 0 dB
: Vin = – 20 dB
: Vin = – 30 dB
: Vin = – 40 dB
: Vin = – 60 dB

Frequency (Hz)

Rev.4, Jun. 1997, page 28 of 57

HA12155NT/HA12157NT

26

22

18

14

Output gain Gv (dB)

10

6

10 30 60 100 300 600 1 k 3 k 6 k 10 k 30 k 60 k 100 k

Output Gain vs. Frequency (HA12155)

PB OUT

REC OUT

(NR – OFF, RPI) Vcc = 14 V
REC mode

Frequency (Hz)

Rev.4, Jun. 1997, page 29 of 57

HA12155NT/HA12157NT

28

24

20

16

Output gain Gv (dB)

12

8

10 30 60 100 300 600 1 k 3 k 6 k 10 k 30 k 60 k 100 k

Output Gain vs. Frequency (HA12155)

PB OUT

REC OUT

PB mode (NR – OFF, RPI) Vcc = 14 V

Frequency (Hz)

Rev.4, Jun. 1997, page 30 of 57

28

24

20

16

Output gain Gv (dB)

HA12155NT/HA12157NT

Output Gain vs. Frequency (HA12157)

PB OUT

REC OUT

12

8

10 30 60 100 300 600 1 k 3 k 6 k 10 k 30 k 60 k 100 k

Frequency (Hz)

(NR – OFF, RPI) Vcc = 14 V

REC mode

Rev.4, Jun. 1997, page 31 of 57

HA12155NT/HA12157NT

30

26

22

18

Out put gain Gv (dB)

14

10

10 30 60 100 300 600 1 k 3 k 6 k 10 k 30 k 60 k 100 k

Output Gain vs. Frequency (HA12157)

PB OUT

REC OUT

PB mode (NR – OFF, PBI) Vcc = 14 V

Frequency (Hz)

Rev.4, Jun. 1997, page 32 of 57

HA12155NT/HA12157NT

Total Harmonic Distortion vs. Output Level (HA12155)

10

RPI in RECOUT out REC mode
f = 100 Hz
V = 14 V

3.0

CC

0 dB = 300 mVrms

1.0

0.3

0.1

Total harmonic distortin T.H.D. (%)

0.03

0.01

Total Harmonic Distortion vs. Output Level (HA12155)

NR-OFF

–15 –10 –5051015

10

3.0

1.0

NR-B

Output level Vout (dB)

RPI in RECOUT out REC mode
f = 1 kHz
V = 14 V

CC

0 dB = 300 mVrms

NR-C

0.3

0.1

Total harmonic distortion T.H.D. (%)

0.03

0.01
–15 –10 –5051015

NR-C

NR-B

NR-OFF

Output level Vout (dB)

Rev.4, Jun. 1997, page 33 of 57

HA12155NT/HA12157NT

Total Harmonic Distortion vs. Output Level (HA12155)

10

3.0

1.0

RPI in RECOUT out REC mode
f = 10 kHz
V = 14 V

CC

0 dB = 300 mVrms

0.3

0.1

Total harmonic distortion T.H.D. (%)

0.03

0.01

–15

–10 –5051015

Total Harmonic Distortion vs. Output Level (HA12155)

10

3.0

1.0

0.3

NR-C

NR-B

NR-OFF

Output level Vout (dB)

PBI in PBOUT out PB mode
f = 100 Hz
V = 14 V

CC

0 dB = 580 mVrms

NR-C

0.1

Total harmonic distortion T.H.D. (%)

0.03

0.01

Rev.4, Jun. 1997, page 34 of 57

NR-OFF

NR-B

–15 –10 –5051015

Output level Vout (dB)

HA12155NT/HA12157NT

Total Harmonic Distortion vs. Output Level (HA12155)

10

3.0

1.0

PBI in PBOUT out PB mode
f = 1 kHz
V = 14 V

CC

0 dB = 580 mVrms

0.3

0.1

Total harmonic distortion T.H.D. (%)

0.03

0.01
–15

Total Harmonic Distortion vs. Output Level (HA12155)

10

3.0

1.0

0.3

NR-OFF

NR-B

–10 –5051015

NR-C

Output level Vout (dB)

PBI in PBOUT out PB mode
f = 10 kHz
V = 14 V

CC

0 dB = 580 mVrms

NR-C

0.1
NR-OFF

Total harmonic distortion T.H.D. (%)

0.03
NR-B

0.01

–15

–10 –5051015

Output level Vout (dB)

Rev.4, Jun. 1997, page 35 of 57

HA12155NT/HA12157NT

Total Harmonic Distortion vs. Output Level (HA12157)

10

3.0

RPI in RECOUT out REC mode
f = 100 Hz
V = 14 V

CC

1.0

0.3

0.1

Total harmonic distortion T.H.D. (%)

0.03

0.01

NR-OFF

–15

–10 –5051015

Total Harmonic Distortion vs. Output Level (HA12157)

10

3.0

1.0

RPI in RECOUT out REC mode
f = 1 kHz
V = 14 V

NR-C

NR-B

Output level Vout (dB)

CC

0.3

0.1

Total harmonic distortion T.H.D. (%)

0.03

0.01

Rev.4, Jun. 1997, page 36 of 57

NR-C

NR-B

NR-OFF

–10 –5051015

–15

Output level Vout (dB)

HA12155NT/HA12157NT

Total Harmonic Distortion vs. Output Level (HA12157)

10

RPI in RECOUT out REC mode
f = 10 kHz
V = 14 V

3.0

1.0

CC

0.3

0.1

Total harmonic distortion T.H.D. (%)

0.03

0.01

–15

–10 –5051015

Total Harmonic Distortion vs. Output Level (HA12157)

10

3.0

1.0

0.3

NR-C

NR-B

NR-OFF

Output level Vout (dB)

RBI in RBOUT out PB mode
f = 100 Hz
V = 14 V

CC

NR-C

0.1
NR-OFF

Total harmonic distortion T.H.D. (%)

0.03

0.01
–15

NR-B

–10 –5051015

Output level Vout (dB)

Rev.4, Jun. 1997, page 37 of 57

HA12155NT/HA12157NT

Total Harmonic Distortion vs. Output Level (HA12157)

10

PBI in PBOUT out REC mode
f = 10 kHz
V = 14 V

3.0

1.0

0.3

0.1

CC

NR-C

Total harmonic distortion T.H.D. (%)

0.03

0.01

Total harmonic distortion T.H.D. (%)

0.03

NR-B

–15

Total Harmonic Distortion vs. Output Level (HA12157)

10

PBI in PBOUT out PB mode
f = 10 kHz
V = 14 V

3.0

1.0

0.3

0.1

NR-OFF

–10 –5051015

Output level Vout (dB)

CC

NR-C

NR-OFF

0.01

Rev.4, Jun. 1997, page 38 of 57

NR-B

–15

–10 –5051015

Output level Vout (dB)

HA12155NT/HA12157NT

Max. Output Level vs. Supply Voltage (HA12155)

20

15

OFF
B

10

5

Max. output level Vo max (dB)

f = 1 kHz REC mode RPI in RECOUT out

0

8 9 10 11 12 13 14 15 16

Supply voltage V (V)

C

T.H.D. = 1%
0 dB = 300 mVrms

CC

Max. Output Level vs. Supply Voltage (HA12155)

20

15

10

5

Max. output level Vo max (dB)

T.H.D. = 1%
0 dB = 580 mVrms

f = 1 kHz PB mode PBI in PBOUT out

0

8 9 10 11 12 13 14 15 16

Supply voltage V (V)

CC

Rev.4, Jun. 1997, page 39 of 57

HA12155NT/HA12157NT

Max. Output Level vs. Supply Voltage (HA12157)

20

15

10

5

Max. output level Vo max (dB)

0

9101112131516

Supply voltage V (V)

Max. Output Level vs. Supply Voltage (HA12157)

20

15

T.H.D. = 1%
0 dB = 300 mVrms

f = 1 kHz REC mode
RPI in RECOUT out

OFF
B
C

CC

Rev.4, Jun. 1997, page 40 of 57

10

5

Max. output level Vo max (dB)

0

10 11 12 13 14 15 16

Supply voltage V (V)

T.H.D. = 1%
0 dB = 775 mVrms

f = 1 kHz PB mode
PBI in PBOUT out

CC

OFF
B
C

HA12155NT/HA12157NT

Signal-to-Noise Ratio vs. Supply Voltage (HA12155)

90

80

70

Signal-to-noise ratio S/N (dB)

60

50

910111213141516

PB-C
PB-B

REC-OFF RPI
REC-OFF VRI

PB-OFF

REC-B RPI
REC-B VRI

REC-C RPI
REC-C VRI

E Vol : DAC Step No.18
Vin = 100 mVrms
CCIR/ARM

Supply voltage Vcc (V)

Rev.4, Jun. 1997, page 41 of 57

HA12155NT/HA12157NT

Signal-to-Noise Ratio vs. Supply Voltage (HA12157)

90

80

PB-C
PB-B

REC-OFF RPI
REC-OFF VRI

RB-OFF

PB-B RPI
REC-B VRI

70

REC-C RPI

Signal-to-noise ratio S/N (dB)

REC-C VRI

60

VRI : DAC Step No.18
Vin = 100 mVrms
CCIR/ARM

50

10 11 12 13 14 15 16

Supply voltage V (V)

CC

–20

Crosstalk vs. Frequency (R L)

REC mode RPI in RECOUT out

–40

Vin = +6 dB
V = 14 V

CC

–60

C

–80

B

Crosstalk (R L) (dB)

–100

–120

10 100 1 k 10 k 100 k

OFF

Frequency (Hz)

Rev.4, Jun. 1997, page 42 of 57

HA12155NT/HA12157NT

–20

PB mode RPI in PBOUT out

Crosstalk vs. Frequency (R L)

–40

–60

–80

Vin = +6 dB
V = 14 V

CC

OFF

C

Crosstalk (R L) (dB)

–100

–120

10 100 1 k 10 k 100 k

B

Frequency (Hz)

Crosstalk vs. Frequency

0

V = 14 V

–20

CC

–40

–60

Crosstalk (dB)

–80

–100

10 30 60 100 300 600 1 k 3 k 6 k 10 k 30 k 60 k 100 k

RPI PBI

RPI VRI

Frequency (Hz)

Rev.4, Jun. 1997, page 43 of 57

HA12155NT/HA12157NT

0

–20

–40

–60

Crosstalk (dB)

–80

–100

10 30 60 100 300 600 1 k 3 k 6 k 10 k 30 k 60 k 100 k

0

–20

Crosstalk vs. Frequency

PBI RPI

Frequency (Hz)

Crosstalk vs. Frequency

V = 14 V

CC

PBI VRI

V = 14 V

CC

–40

–60

Crosstalk (dB)

–80

–100

10 30 60 100 300 600 1 k 3 k 6 k 10 k 30 k 60 k 100 k

VRI RPI

VRI PBI

Frequency (Hz)

Rev.4, Jun. 1997, page 44 of 57

–10

Ripple Rejection Ratio vs. Frequency (REC mode)

0

V = 14 V RECOUT out

CC

HA12155NT/HA12157NT

–20

–30

–40

Ripple rejection ratio R.R.R. (dB)

–50

10 50 100 500 1 k 5 k 10 k 50 k 100 k

Frequency (Hz)

Ripple Rejection Ratio vs. Frequency (PB mode)

–10

–20

–30

C

B

OFF

OFF

–40

–50

Ripple rejection ratio R.R.R. (dB)

–60

10 50 100 500 1 k 5 k 10 k 50 k 100 k

Frequency (Hz)

B

C

V = 14 V PBOUT out

CC

Rev.4, Jun. 1997, page 45 of 57

HA12155NT/HA12157NT

Gain, S/N and Vomax vs. DAC Step

–25

–20

20

Gv.Vin

100

–15

10

–10

S/N

–5

0

(JIS A filter)

Vo max

0

IAOUT gain Gv (dB)

–10

5

Input level Vin (the value to be converted) (dBs)

10

V = 14 V f = 1 kHz

CC

VRI in IAOUT out

15

–20

0 20304010

DAC Step No.

90

80

70

60

20

S/N (dB)

16

12

8

4

0
2

Vo max (dB) 0 dB = –5.2 dBs T.H.D. = 1 %

Rev.4, Jun. 1997, page 46 of 57

Total Harmonic Distortion vs. DAC Step

10

0 dB = –5.2 dBs
Vcc = 14 V

3.0

f = 100 Hz
IAOUT output level = const

1.0

+10 dB

0 dB

0.3

0.1

0.03

Total harmonic distortion T.H.D. (%)

0.01

–10 dB

0 1020304050

DAC Step

HA12155NT/HA12157NT

Total Harmonic Distortion vs. DAC Step

10

0 dB = –5.2 dBs
Vcc = 14 V

3.0

f = 1 kHz
IAOUT output level = const

1.0

0.3

0.1

0.03

Total harmonic distortion T.H.D. (%)

0.01

+ 10 dB
0 dB
– 10 dB

0 1020304050

DAC Step

Rev.4, Jun. 1997, page 47 of 57

HA12155NT/HA12157NT

3.0

1.0

Total Harmonic Distortion vs. DAC Step

10

0 dB = –5.2 dBs
Vcc = 14 V
f = 10 kHz
IAOUT output level = const

0.3

0.1

0.03

Total harmonic distortion T.H.D. (%)

0.01

E. Vol Max. Input Level vs. Supply Voltage

16

14

12

10

+ 10 dB
0 dB
– 10 dB

0 1020304050

DAC Step

Rev.4, Jun. 1997, page 48 of 57

8

6

4

2

E. Vol Max. input level Vin max (IAOUT T.H.D. = 1 %) (dB)

0

8 1012141618

f = 1 kHz
IAOUT out DAC Step No.= 42

Supply voltage V (V)

CC

HA12155NT/HA12157NT

30

VRI in IAOUT out V = 14 V V in = –12 dBs

20
10

0

–10
–20

–30
–40

Electronic volume gain (dB)

–50
–60
–70

10 100 1 k 10 k 100 k

Electronic Volume Gain vs. Frequency

CC

Frequency (Hz)

DAC Step0
DAC Step20

DAC Step29
DAC Step36
DAC Step42

DAC Step47
DAC Step51

DAC Step56
DAC Step62

Level Meter Output vs. Input Level (HA12155)

4.0

3.0

–20 dB Range

2.0
0 dB Range

Level meter output (V)

1.0

0 dB = 580 mVrms
V = 14 V

CC

0

f = 1 kHz

–80 –60 –40 –20 0 20 40

Input level Vin (dB)

Rev.4, Jun. 1997, page 49 of 57

HA12155NT/HA12157NT

Level Meter Output vs. Input Level (HA12157)

4.0

3.0

2.0

Level meter output (V)

1.0

0

–20 dB Range

0 dB Range

0 dB = 775 mVrms
V = 14 V

CC

f = 1 kHz

–80 –60 –40 –20 0 20 40

Input level Vin (dB)

3.2

3.0

2.8

2.6

2.4

Level meter output (V)

2.2

2.0
20 30 100 300 1 k 3 k 10 k 30 k 100 k

Level Meter Output vs. Frequency

0 dB Range Vin = 0 dB
–20 dB Range Vin = –20 dB

Frequency (Hz)

V = 14 V

CC

Rev.4, Jun. 1997, page 50 of 57

Level Meter Output vs. Supply Voltage

4.0

0 dB Range Vin = 12 dB

3.0

0 dB Range Vin = 0 dB
–20 dB Range Vin = –20 dB

2.0

Level meter output (V)

HA12155NT/HA12157NT

40

R

GP

R

GL

R

GH

R

F/Q

R

FQ

R

FM

V = 14 V Vin = –20 dBs

25

CC

Equalizer gain (dB)

1.0

0 dB Range Vin = –20 dB

f = 1 kHz

0

8 1012141618

Supply voltage V (V)

CC

Equalizer Gain vs. Frequency

(1) (2) (3) (4)

NN HN NC HC NM HM

33 k

33 k 33 k 33 k 47 k 47 k

33 k

33 k 51 k 51 k 51 k

33 k

51 k 51 k 51 k

33 k

51 k 20 k 51 k 20 k

51 k

20 k
27 k 51 k 27 k 51 k 27 k

51 k

100 k100 k100 k100 k100 k100 k

(5)

(6)

51 k
51 k

(1)

(2)

(5)

(3)

(6)

(4)

10

1 k30010 3 k 10 k 30 k 100 k

Frequency (Hz)

Rev.4, Jun. 1997, page 51 of 57

HA12155NT/HA12157NT

Equalizer Total Harmonic Distortion vs. Output Level

30

10

3.0

1.0

Total hrmonic distortion T.H.D. (%)

0.3

0.1
–10 –505101520

V = 14 V

CC

0 dB = –5 dBs
Rload = 10 k
R = 33 k

GL

R = 33 k

GH

R = 100 k

FM

R = 33 k

GP

R = 51 k

F/Q

R = 51 k

FQ

Ω
Ω
Ω

Ω

Ω

Ω

Ω

Output level Vout (dB)

: 15 kHz
: 10 kHz
: 6.3 kHz
: 3.15 kHz
: 1 kHz
: 315 Hz

Equalizer Amplifier Gain (GL) vs. R

35

V = 14V

30

25

CC

R = R = 33 k

GH
FQ
FM

GP
F/Q

Ω

R = R = 51 k
R = 100 k

Ω

Ω

f = 315 Hz

20

f = 1 kHz

15

at R = 33 k

GL

10

Equalizer amplifier gain GL (dB)

5

5k 10 k 30 k 100 k 1 M

V out = Ð5 dBs

R ( )

GL

Ω

300 k

Ω

GL

Rev.4, Jun. 1997, page 52 of 57

HA12155NT/HA12157NT

Equalizer Amplifier Gain (GH) vs. R

35

V = 14 V

CC

R = 33 k

30

25

GL

R = 16 k

GP

R = R = 24 k

FQFMF/Q

R = 390 k

Ω

Ω

Ω

Ω

f = 6.3 kHz

20

at R = 33 k

GH

15

10

Equalizer amplifier gain GH (dB)

5

5k 10 k 30 k 100 k 1 M

Vout = Ð5 dBs

R ( )

Ω

GH

300 k

Equalizer Amplifier Gain (GP) vs. R

50

V = 14 V

CC

R = R = 33 k

45

GH

R = R = 51 k

FQ

R = 100 k

FM

GP
F/Q

Ω

Ω

Ω

40

f = 19 kHz

35

GH

Ω

GP

30

25

Equalizer amplifier gain GP (dB)

20

5k 10 k 30 k 100 k 1 M

R ( )

GP

300 k

Ω

Rev.4, Jun. 1997, page 53 of 57

HA12155NT/HA12157NT

100 k

Equalizer Cut off Frequency (FM) vs. R

30 k

10 k

3 k

Equalizer cut off frequency FM (Hz)

1 k

300

5 k 10 k 30 k 100 k 300 k 1 M

R ( )

FM

V = 14 V

CC

R = 120 k

GL

R = 7.5 k

GH

R = R = 24 k

FQGPF/Q

R = 16 k

Ω

Ω

Ω

Ω

FM

Ω

300 k

Equalizer Peak Frequency vs. R

100 k

30 k

10 k

Equalizer peak frequency fo (Hz)

3 k
2 k

5 k 10 k 30 k 100 k 300 k 1 M

R ( )

Ω

FQ

FQ

R =

F/Q

12 k
24 k
51 k
100 k
200 k
390 k

Ω
Ω
Ω

Ω
Ω
Ω

Rev.4, Jun. 1997, page 54 of 57

HA12155NT/HA12157NT

Equalizer Q vs. R

FQ

15

10

Equalizer quality factor Q

5

0

5 k 10 k 30 k 100 k 300 k 1 M

R ( )

Ω

FQ

R =

F/Q

390 k
200 k
100 k
51 k
24 k
12 k

Ω
Ω

Ω
Ω
Ω
Ω

Rev.4, Jun. 1997, page 55 of 57

HA12155NT/HA12157NT

Package Dimensions

57.6

64

1

58.5 Max

1.0

Unit: mm

33

17.0

18.6 Max

32

1.46 Max

1.78 ± 0.25

0.48 ± 0.10

5.08 Max

0.51 Min

2.54 Min

0˚ – 15˚

Hitachi Code
JEDEC Code
EIAJ Code
Weight

19.05

0.25

+ 0.11
– 0.05

DP-64S
—
SC-553-64A

8.8 g

Rev.4, Jun. 1997, page 56 of 57

HA12155NT/HA12157NT

Disclaimer

1. Hitachi neither warrants nor grants licenses of any rights of Hitachi’s or any third party’s patent,
copyright, trademark, or other intellectual property rights for information contained in this document.
Hitachi bears no responsibility for problems that may arise with third party’s rights, in cluding
intellectual property rights, in connection with u se of the information contained in this document.

2. Products and product specifications may be subject to change without notice. Confirm that you have
received the latest product standards or specifications before final design, purchase or use.

3. Hitachi makes every attempt to ensure that its products are of high quality and reliability. However,
contact Hitachi’s sales office before using the product in an application that demands especially high
quality and reliability or where its failure or malfunction may directly threaten human life or cause risk
of bodily injury, such as aerospace, aeronautics, nuclear power, combustion control, transportation,
traffic, safety equipment or medical equipment for life support.

4. Design your application so that the product is used within the ranges guaranteed by Hitachi particularly
for maximum rating, operating supply voltage range, heat radiation characteristics, installation
conditions and other characteristics. Hitachi bears no responsibility for failure or damage when used
beyond the guaranteed ranges. Even within the guaranteed ranges, consider normally foreseeable
failure rates or failure modes in semiconductor devices and employ systemic measures such as fail­safes, so that the equipment incorporating Hitachi product does not cause bodily injury, fire or other
consequential damage due to operation of the Hitachi product.

5. This product is not designed to be radiation resistant.

6. No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without
written approval from Hitachi.

7. Contact Hitachi’s sales office for any questions regarding this document or Hitachi semiconductor
products.

Sales Offices

Hitachi, Ltd.

Semiconductor & Integrated Circuits.
Nippon Bldg., 2-6-2, Ohte-machi, Chiyoda-ku, Tokyo 100-0004, Japan
Tel: Tokyo [phone] Fax: [phone]

URL NorthAmerica : http://semiconductor.hitachi.com/

For further information write to:

Hitachi Semiconductor
(America) Inc.
179 East Tasman Drive,
San Jose,CA 95134
Tel: <1> [phone]
Fax: <1>[phone]

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Asia : http://sicapac.hitachi-asia.com
Japan : http://www.hitachi.co.jp/Sicd/indx.htm

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Electronic Components Group
Dornacher Straße 3
D-85622 Feldkirchen, Munich
Germany
Tel: <49> (89) 9 9180-0
Fax: <49> (89) 9 29 30 00

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Electronic Components Group.
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Lower Cookham Road
Maidenhead
Berkshire SL6 8YA, United Kingdom
Tel: <44> (1628) 585000
Fax: <44> (1628) 585160

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Hitachi Tower
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Singapore 049318
Tel : <65>-538-6533/538-8577
Fax : <65>-538-6933/538-3877
URL : http://www.hitachi.com.sg

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(Taipei Branch Office)
4/F, No. 167, Tun Hwa North Road,
Hung-Kuo Building,
Taipei (105), Taiwan
Tel : <886>-(2)-2718-3666
Fax : <886>-(2)-2718-8180
Telex : 23222 HAS-TP
URL : http://www.hitachi.com.tw

Copyright  Hitachi, Ltd., 2000. All rights reserved. Printed in Japan.

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Group III (Electronic Components)
7/F., North Tower,
World Finance Centre,
Harbour City, Canton Road
Tsim Sha Tsui, Kowloon,
Hong Kong
Tel : <852>-(2)-735-9218
Fax : <852>-(2)-730-0281
URL : http://www.hitachi.com.hk

Colophon 2.0

Rev.4, Jun. 1997, page 57 of 57