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