
Semiconductor Components Industries, LLC, 2006
March, 2006
Rev. 2
1
Publication Order Number:
SA572/D
SA572
Programmable Analog
Compandor
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
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 110 dB
Temperature-Compensated Gain Control
Low Distortion Gain Cell
Low Noise
6.0 V Typical
Wide Supply Voltage Range
6.0 V-22 V
System Level Adjustable with External Components
Pb
Free Packages are Available*
Applications
Dynamic Noise Reduction System
Voltage Control Amplifier
Stereo Expandor
Automatic Level Control
High-Level Limiter
Low-Level Noise Gate
State Variable Filter
*For additional information on our Pb
Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques Reference
Manual, SOLDERRM/D.
http://onsemi.com
See detailed ordering and shipping information in the package
dimensions section on page 10 of this data sheet.
ORDERING INFORMATION
PIN CONNECTIONS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
16
15
D, N, DTB Packages*
TRACK TRIM A
RECOV. CAP A
RECT. IN A
ATTACK CAP A
THD TRIM A
GND
G OUT A
G IN A
TRACK TRIM B
RECOV. CAP B
RECT. IN B
ATTACK CAP B
THD TRIM B
G OUT B
G IN B
V
CC
*D package released in large SO (SOL) package only.
PDIP
16
N SUFFIX
CASE 648
16
1
16
SOIC
16 WB
D SUFFIX
CASE 751G
1
MARKING DIAGRAMS
16
1
SA572D
AWLYYWWG
16
1
SA572N
AWLYYWWG
A
WL
YY
WW
G or
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb
Free Package
16
1
SA
572
ALYW
TSSOP
16
DTB SUFFIX
CASE 948F
16
1
(Note: Microdot may be in either location)