UTC571 Datasheet, PDF (1/14 Pages) Unisonic Technologies – COMPANDER Complete compressor and expandor in one IChip

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
• Complete compressor and expandor in one IChip
•Temperature compensated
•Greater than 110dB dynamic range
• Operates down to 6VDC
• System levels adjustable with external components
• Distortion may be trimmed out
• Dynamic noise reduction systems
• Voltage-controlled amplifier
DIP-16
APPLICATIONS
•Cellular radio
•High level limiter
•Low level expandor—noise gate
•Dynamic filters
•CD Player
PIN CONFIGURATION
RECT CAP 1 1
RECT IN 1 ₂
AG CELL IN 1 ₃
GND 4
INV.IN 1 5
RES.R3 1 6
OUTPUT 1 ₇
THD TRIM 1 ₈
16 RECT CAP 2
15 _{RECT IN 2}
14 ^{AG CELL IN 2}
13 ^VCC
12 INV.IN 2
11 RES.R 3 2
10 ^{OUTPUT 2}
9 ^{THD TRIM 2}
YOUW ANG ELECTRONICS CO.LTD
1