Philips Semiconductors RF Communications Products
Product specification
Programmable analog compandor
NE/SA572
DESCRIPTION
The NE572 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 NE572 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
time
•
Independent control of attack and recovery
•
Improved low frequency gain control ripple
•
Complementary gain compression and
expansion with external op amp
PIN CONFIGURATION
D
1
, N, F Packages
TRACK TRIM A 1
RECOV. CAP A 2
RECT. IN A 3
ATTACK CAP A 4
∆G
OUT A 5
THD TRIM A 6
∆G
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
∆G
OUT B
10 THD TRIM B
9
∆G
IN B
•
Wide dynamic range—greater than 110dB
•
Temperature-compensated gain control
•
Low distortion gain cell
•
Low noise—6µV typical
•
Wide supply voltage range—6V-22V
•
System level adjustable with external
components
NOTE:
1. D package released in large SO (SOL) package
only.
APPLICATIONS
•
Dynamic noise reduction system
•
Voltage control amplifier
•
Stereo expandor
•
Automatic level control
•
High-level limiter
•
Low-level noise gate
•
State variable filter
ORDERING INFORMATION
DESCRIPTION
16-Pin Plastic Small Outline (SO)
16-Pin Plastic Dual In-Line Package (DIP)
16-Pin Plastic Small Outline (SO)
16-Pin Ceramic Dual In-Line Package (Cerdip)
16-Pin Plastic Dual In-Line Package (DIP)
TEMPERATURE RANGE
0 to +70°C
0 to +70°C
–40 to +85°C
–40 to +85°C
–40 to +85°C
ORDER CODE
NE572D
NE572N
SA572D
SA572F
SA572N
DWG #
0005
0406
0005
0582
0406
ABSOLUTE MAXIMUM RATINGS
SYMBOL
V
CC
T
A
PARAMETER
Supply voltage
Operating temperature range
NE572
SA572
P
D
Power dissipation
0 to +70
–40 to +85
500
mW
°C
RATING
22
UNIT
V
DC
October 7, 1987
2
853-0813 90829
PHILIPS [ NXP SEMICONDUCTORS ]
