UTC571
LINEAR INTEGRATED CIRCUIT
COMPANDER
DESCRIPTION
The UTC571 is a versatile low cost dual gain control
circuit in which either channel may be used as a dynamic
range compressor or expandor. Each channel has a full-
wave rectifier to detect the average value of the signal, a
linerarized temperature-compensated variable gain cell,
and an operational amplifier.
The UTC571 is well suited for use in cellular radio and
radio communications systems, modems, telephone, and
satellite broadcast/receive audio systems.
FEATURES
DIP-16
• Complete compressor and expandor in one IChip
•Temperature compensated
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APPLICATIONS
•Greater than 110dB dynamic range
• Operates down to 6VDC
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• System levels adjustable with external components
• Distortion may be trimmed out
• Dynamic noise reduction systems
• Voltage-controlled amplifier
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PIN CONFIGURATION
RECT CAP 1
RECT IN 1
1
2
3
4
5
6
7
8
16 RECT CAP 2
15
RECT IN 2
AG CELL IN 1
AG CELL IN 2
14
VCC
GND
13
INV.IN 1
12 INV.IN 2
RES.R
3
1
RES.R 3 2
11
10
9
OUTPUT 1
OUTPUT 2
THD TRIM 1
THD TRIM 2
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YOUW ANG ELECTRONICS CO.LTD
UTC [ Unisonic Technologies ]
