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SSM2122_15 Datasheet, PDF (1/12 Pages) Analog Devices – DYNAMIC RANGE PROCESSOR/DUAL VCA | |||
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®®
Precision Monolithics Inc.
SSM-2120/SSM-2122
DYNAMIC RANGE
PROCESSOR/DUAL VCA
FEATURES
GENERAL DESCRIPTION
⢠0.01% THD at +10dBV In/Out
⢠100dB VCA Dynamic Range
⢠Low VCA Control Feedthrough
⢠100dB Level Detection Range
⢠Log/Antilog Control Paths
⢠Low External Component Count
The SSM-2120 is a monolithic integrated circuit designed for the
purpose of processing dynamic signals in various analog sys-
tems including audio. This âdynamic range processorâ consists
of two VCAs and two level detectors (the SSM-2122 consists of
two VCAs only). These circuit blocks allow the user to logarith-
mically control the gain or attenuation of the signals presented
to the level detectors depending on their magnitudes. This al-
APPLICATIONS
⢠Compressors
⢠Expanders
⢠Limiters
⢠AGC Circuits
O⢠Voltage-Controlled Filters
⢠Noise Reduction Systems
⢠B Stereo Noise Gates
S ORDERING INFORMATION
O PACKAGE
L PLASTIC
16-PIN
PLASTIC
22-PIN
ETE SSM2122P
SSM2120P
OPERATING
TEMPERATURE
RANGE
â10°C to +50°C
lows the compression, expansion or limiting of AC signals, some
of the primary applications for the SSM-2120.
PIN CONNECTIONS
THRESH 1 1
LOG AV 1 2
CONOUT 1 3
SIGOUT 1 4
+VC1 5
CFT 1 6
âVC1 7
SIGIN 1 8
RECIN 1 9
IREF 10
Vâ 11
22 GND
21 V+
20 SIGOUT 2
19 +VC2
18 CFT 2
17 âVC2
16 SIGIN 2
15 RECIN 2
14 CONOUT 2
13 LOG AV 2
12 THRESH 2
GND 1
SIGOUT 1 2
+VC1 3
CFT 1 4
âVC1 5
SIGIN 1 6
IREF 7
Vâ 8
16 GND
15 V+
14 SIGOUT 2
13 +VC2
12 CFT 2
11 âVC2
10 SIGIN 2
9 GND
SIMPLIFIED SCHEMATIC (VCA Section Only)
V+
SSM-2120
22-PIN PLASTIC DIP
(P-Suffix)
SSM-2122
16-PIN PLASTIC DIP
(P-Suffix)
CURRENT
MIRRORS
SIGNAL
OUT
36kâ¦
âVC
+VC
V+
V+
SIGNAL
INPUT
36kâ¦
V+
IREF
Vâ
Protection Act of 1983.
The SSM-2120/SSM-2122 is mask work protected under the Semiconductor Chip
5/90, Rev. B1
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