SA572 Philips, SA572 Datasheet - Page 2

• Manufacturer Part Number: SA572
• Description: Programmable analog compandor
• Manufacturer: Philips

Philips Semiconductors
DESCRIPTION
The SA572 is a dual-channel, high-performance gain control circuit
in which either channel may be used for dynamic range
compression or expansion. Each channel has a full-wave rectifier to
detect the average value of input signal, a linearized,
temperature-compensated variable gain cell ( G) and a dynamic
time constant buffer. The buffer permits independent control of
dynamic attack and recovery time with minimum external
components and improved low frequency gain control ripple
distortion over previous compandors.
The SA572 is intended for noise reduction in high-performance
audio systems. It can also be used in a wide range of
communication systems and video recording applications.
FEATURES
ORDERING INFORMATION
ABSOLUTE MAXIMUM RATINGS
1998 Nov 03
16-Pin Plastic Small Outline (SOL)
16-Pin Plastic Dual In-Line Package (DIP)
V
T
T
P
Independent control of attack and recovery time
Improved low frequency gain control ripple
Complementary gain compression and expansion with
external op amp
Wide dynamic range—greater than 110dB
Temperature-compensated gain control
Low distortion gain cell
Low noise—6 V typical
Wide supply voltage range—6V-22V
System level adjustable with external components
A
A
CC
D
Programmable analog compandor
SYMBOL
Supply voltage
Operating temperature range
Power dissipation
DESCRIPTION
SA572
PARAMETER
2
PIN CONFIGURATION
APPLICATIONS
NOTE:
1. D package released in large SO (SOL) package only.
TEMPERATURE RANGE
Dynamic noise reduction system
Voltage control amplifier
Stereo expandor
Automatic level control
High-level limiter
Low-level noise gate
State variable filter
–40 to +85 C
–40 to +85 C
ATTACK CAP A
TRACK TRIM A
RECOV. CAP A
THD TRIM A
RECT. IN A
G OUT A
G IN A
Figure 1. Pin Configuration
GND
D
1
2
3
4
5
6
7
8
–40 to +85
1
RATING
, N, Packages
500
22
ORDER CODE
SA572D
SA572N
16
15
14
13
12
11
10
9
TRACK TRIM B
RECOV. CAP B
RECT. IN B
ATTACK CAP B
THD TRIM B
V
G OUT B
G IN B
Product specification
CC
SR00694
853-0813 20294
SA572
UNIT
V
SOT162-1
mW
SOT38-4
DWG #
DC
C