System. CXA1561M Datasheet

CXA1561M Datasheet PDF

Part CXA1561M
Description Dolby B-C Type Noise Reduction System
Feature CXA1561M; CXA1560S, CXA1561M/S, CXA1562M/S Dolby∗ B-C Type Noise Reduction System Description The CXA1560 seri.
Manufacture Sony Corporation
Datasheet
Download CXA1561M Datasheet




CXA1561M
CXA1560S, CXA1561M/S, CXA1562M/S
DolbyB-C Type Noise Reduction System
Description
The CXA1560 series is a bipolar IC incorporating
stereo Dolby B-C type noise reduction (NR) system.
Five kinds of device are provided due to the
combination of three line output levels and two
packages for various applications.
A reduction in the number of external parts and
small package have been achieved due to the fact
that the spectral skewing circuits are all on-chip.
CXA1561M
CXA1562M
24 pin SOP (Plastic)
Features
Few external parts
Spectral skewing circuit are on-chip
NR ON/OFF, REC/PB, MPX filter ON/OFF switches
Small package (24-pin SOP, 22-pin SDIP)
Low current consumption 13mA Typ.
(power supply ±6V)
Structure
Bipolar silicon monolithic IC
Absolute Maximum Ratings (Ta = 25°C)
Supply voltage
Vcc – VEE 17
Operating temperature
Topr –40 to +85
Storage temperature
Tstg –65 to +150
Allowable power dissipation PD
600 (SOP)
1200 (SDIP)
V
°C
°C
mW
mW
CXA1560S
CXA1561S
CXA1562S
22 pin SDIP (Plastic)
This IC is 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 trademarks 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–
E93805B5X-PP



CXA1561M
CXA1560S, CXA1561M/S, CXA1562M/S
–2–



CXA1561M
Pin Description and Equivalent Circuit
Pin No.
Symbol Z: Imp VDC (V)
SOP SDIP
CXA1560S, CXA1561M/S, CXA1562M/S
Equivalent circuit
VCC
Description
1 1 IREF
0 VEE + 1.25V
2, 23 2, 21 PB IN
40K VCT
4, 21 4, 19 MPX IN
40k
3, 22 3, 20 LINE IN 62K VCT
62k
VEE + 1.25V
Reference current pin for
setting internal filter cut-off
frequency
VEE
VCC
VCT
Playback input pin
Reference level = –30dBm
Buffer amplifier input pin to
drive multiplex filter
Reference level = –19dBm
VEE
VCC
VCT
Recording input pin
Reference level = –25dBm
5, 20 5, 18 MPX OUT 0
VCT
500
8.8k 500
VEE
VCC
Buffer amplifier output pin
to drive multiplex filter
Reference level = –15dBm
VEE
–3–







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