Sony CXA1553P, CXA1553M, CXA1552P, CXA1552M, CXA1551P Datasheet
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CXA1550P, CXA1551M/P
CXA1552M/P, CXA1553M/P
Dolby B type Noise Reduction System
Description
The CXA1550/CXA1551/CXA1552/CXA1553 are bipolar ICs providing two separate Dolby B type noise reduction processors. The series is composed of seven devices having four Dolby levels and two types of package for various applications. These devices feature very few external components, which is achieved by monolithic filter circuits using integrated thin film capacitors with high capacitance.
CXA1551M/CXA1552M |
CXA1550P/CXA1551P |
CXA1553M |
CXA1552P/CXA1553P |
16 pin SOP (Plastic) |
16 pin DIP (Plastic) |
Features
•Pin replaceable with CXA1100 series
•Minimum number of external components
•NR ON/OFF/Double Speed, REC/PB switches included
•Small package (16 pin SOP, 16 pin DIP)
•Low current consumption 5.6mA typ.
•Dual channel processors in one chip
•Double speed encode and decode functions are provided.
Absolute Maximum Ratings (Ta=25 °C) |
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• Supply voltage |
VCC |
23 |
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V |
• Operating temperature |
Topr |
–40 to +85 |
°C |
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• Storage temperature |
Tstg |
–65 to +150 |
°C |
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• Allowable power dissipation |
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PD |
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SOP16 (A1551M/A1552M/A1553M) |
500 mW |
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DIP16 (A1550P/A1551P/A1552P/A1553P) |
900 mW |
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These ICs are available only to the licensees of Dolby Laboratories Licensing Corporation from whom licensing and applications information may be obtained.
“Dolby” and the double D symbols are trade marks of Dolby Laboratories Licensing Corporation.
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
—1—
E92315A79-TE
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CXA1550P, CXA1551M/P, CXA1552M/P, CXA1553M/P |
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Attenuator |
Side Chain Detector |
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ATT : |
SC : DET : |
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OUT1 |
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OUT2 |
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OUT |
C12 2.2 |
REC |
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REC |
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C11 2.2 |
OUT |
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8 |
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REC |
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REC |
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C10 0.1 |
TC1 |
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DET |
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DET |
TC2 |
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C9 0.1 |
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10 |
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7 |
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LINE OUT |
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OUT1 |
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OUT2 |
C7 2.2 |
LINE OUT |
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LINE |
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LINE |
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C8 2.2 |
11 |
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6 |
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REC/PB |
MODESW |
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SC |
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SC |
NRSW |
ON/OFF/×2 |
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12 |
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5 |
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R1 |
18k |
IREF |
ATT1 |
ATT3 |
ATT3 |
ATT1 |
/2 |
CC |
V |
C6 2.2 |
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13 |
4 |
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IN2 |
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PBIN1 |
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PB |
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PB IN |
C5 |
1 |
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C4 1 |
PB IN |
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14 |
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3 |
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GND |
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ATT2 |
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ATT2 |
CC |
V |
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C3 100 |
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VCC |
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15 |
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2 |
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IN1 |
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IN2 |
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REC |
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REC |
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IN |
C2 1 |
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C1 1 |
IN |
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16 |
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REC |
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1 |
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REC |
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Block Diagram
— 2—
CXA1550P, CXA1551M/P, CXA1552M/P, CXA1553M/P
Pin Description and Equivalent Circuit |
(Ta=25 °C, VCC=12 V, single supply, no signal) |
Pin |
Symbol |
Z (in) |
VDC |
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Equivalent circuit |
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Description |
No. |
(V) |
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VCC |
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1, 16 |
REC IN |
40 k |
6.0 V |
1 |
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Recording (encode) input pin |
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16 |
40k |
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VCC/2 |
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GND |
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2 |
VCC |
— |
12.0 V |
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VCC power supply pin |
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VCC |
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3, 14 |
PB IN |
40 k |
6.0 V |
3 |
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Playback (decode) input pin |
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14 |
40k |
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VCC/2 |
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GND |
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4 |
VCT |
2 k |
6.0 V |
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VCC/2 output pin |
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VCC |
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50 A |
50 A |
NR control pin |
5 |
NRSW |
— |
— |
5 |
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H : Double speed |
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M : NR off |
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50k |
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L : NR on |
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GND |
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VCC |
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200 |
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6, 11 |
LINE OUT |
— |
6.0 V |
6 |
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Line (decode) output pin |
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11 |
200 |
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GND |
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— 3—
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CXA1550P, CXA1551M/P, CXA1552M/P, CXA1553M/P |
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Pin |
Symbol |
Z (in) |
VDC |
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Equivalent circuit |
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Description |
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No. |
(V) |
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VCC |
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4.5 A |
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20k |
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7, 10 |
TC |
— |
0.3 V |
7 |
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Time constant connecting pin |
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10 |
600k |
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GND |
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VCC |
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300 |
10k |
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8, 9 |
REC OUT |
— |
6.0 V |
8 |
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Recording (encode) output pin |
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9 |
300 |
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GND |
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VCC |
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50 A |
50 A |
REC/PB (encode/decode) |
12 |
MODE |
— |
— |
12 |
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control pin |
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H : PB |
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50k |
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L : REC |
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GND |
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VCC |
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8k |
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Active filter reference current |
13 |
IREF |
— |
1.2 V |
13 |
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1.2V |
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input pin |
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50 A |
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GND |
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15 |
GND |
— |
0 V |
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GND pin |
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— 4— |
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CXA1550P, CXA1551M/P, CXA1552M/P, CXA1553M/P
Electrical Characteristics
Ta=25 °C, Dolby Level: –10 dBm (=245 mVrms) at RECOUT, 0 dBm=775 mVrms, VCC=15 V (CXA1550), VCC=12 V (CXA1551), VCC=9 V (CXA1552), VCC=6 V (CXA1553) unless otherwise specified
Characteristics |
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CXA1550 |
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Operating |
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CXA1551 |
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voltage |
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CXA1552 |
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CXA1553 |
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CXA1550 |
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Current |
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CXA1551 |
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consumption |
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CXA1552 |
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CXA1553 |
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CXA1550 |
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LINE OUT |
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CXA1551 |
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level |
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CXA1552 |
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CXA1553 |
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REC IN Level |
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PB IN Level |
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(1) |
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Encode |
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(2) |
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characteristics |
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(3) |
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(Boost) |
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(4) |
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(5) |
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CXA1550 |
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Signal |
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CXA1551 |
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handling |
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CXA1552 |
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CXA1553 |
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OFF |
CXA1550 |
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CXA1551 |
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Total |
NR |
CXA1552 |
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(1) |
CXA1553 |
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harmonic |
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CXA1550 |
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distortion |
ON |
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CXA1551 |
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NR |
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CXA1552 |
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(2) |
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CXA1553 |
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Encode S/N ratio
REC-PB
PB-REC
Crosstalk
REC ch to ch PB ch to ch
REC OUT offset voltage (NR ON-OFF)
REC
PB
Control
ON
voltage
OFF
×2
Symbol |
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Test Conditions |
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Min. |
Typ. |
Max. |
Unit |
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R/P |
NR |
f (Hz) |
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other |
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Signal |
11.5 |
— |
16.0 |
V |
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8.5 |
— |
16.0 |
V |
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Vopr |
— |
— |
— |
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handling |
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6.5 |
— |
16.0 |
V |
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≥12 dB |
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5.0 |
— |
16.0 |
V |
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3.5 |
5.6 |
7.7 |
mA |
ICC |
REC |
OFF |
— |
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No signal |
3.5 |
5.5 |
7.7 |
mA |
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3.5 |
5.3 |
7.7 |
mA |
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3.5 |
5.1 |
7.7 |
mA |
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–1.0 |
0.0 |
1.0 |
dBm |
Vlout |
REC |
OFF |
1 k |
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–4.0 |
–3.0 |
–2.0 |
dBm |
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–7.0 |
–6.0 |
–5.0 |
dBm |
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–11.0 |
–10.0 |
–9.0 |
dBm |
Vrin |
REC |
OFF |
1 k |
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–32 |
–30 |
–28 |
dBm |
Vpin |
REC |
OFF |
1 k |
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–32 |
–30 |
–28 |
dBm |
B-R-1 |
REC |
ON |
500 |
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–25 dB |
1.4 |
2.9 |
4.4 |
dB |
B-R-2 |
REC |
ON |
2 k |
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–25 dB |
5.5 |
7.0 |
8.5 |
dB |
B-R-3 |
REC |
ON |
5 k |
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–25 dB |
3.9 |
5.4 |
6.9 |
dB |
B-R-4 |
REC |
ON |
10 k |
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–40 dB |
9.7 |
10.4 |
11.9 |
dB |
B-R-5 |
REC |
ON |
10 k |
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0 dB |
–1.1 |
0.4 |
1.9 |
dB |
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13.5 |
15.3 |
— |
dB |
Vomax |
REC |
OFF |
1 k |
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THD=1 % |
14.0 |
15.9 |
— |
dB |
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14.0 |
15.9 |
— |
dB |
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13.0 |
15.0 |
— |
dB |
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— |
0.03 |
0.2 |
% |
THD |
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OFF |
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— |
0.04 |
0.2 |
% |
(OFF) |
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— |
0.05 |
0.2 |
% |
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— |
0.06 |
0.2 |
% |
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— |
0.03 |
0.3 |
% |
THD |
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ON |
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— |
0.04 |
0.3 |
% |
(ON) |
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— |
0.06 |
0.3 |
% |
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— |
0.09 |
0.3 |
% |
SN |
R |
ON |
— |
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Rg=5 kΩ |
65 |
69 |
— |
dB |
(CCIR) |
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(CCIR/ARM) |
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CT-1 |
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— |
–82 |
–65 |
dB |
CT-2 |
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— |
–81 |
–60 |
dB |
CT-3 |
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— |
–70 |
–60 |
dB |
CT-4 |
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— |
–70 |
–60 |
dB |
Voff |
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–40 |
— |
40 |
mV |
VC-R |
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0 |
— |
0.5 |
V |
VC-P |
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2.5 |
— |
VCC |
V |
VC-ON |
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0 |
— |
0.5 |
V |
VC-OFF |
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2.5 |
— |
VCC–2.5 |
V |
VC-×2 |
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VCC–05 |
— |
VCC |
V |
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0 dB means the level which provides the Dolby level at the recording output in the noise reduction off mode.
—5—
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