SSM2143 Datasheet, PDF (1/8 Pages) Analog Devices – -6 dB Differential Line Receiver

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FEATURES
High Common-Mode Rejection
DC: 90 dB typ
60 Hz: 90 dB typ
20 kHz: 85 dB typ
Ultralow THD: 0.0006% typ @ 1 kHz
Fast Slew Rate: 10 V/␮s typ
Wide Bandwidth: 7 MHz typ (G = 1/2)
Two Gain Levels Available: G = 1/2 or 2
Low Cost
GENERAL DESCRIPTION
The SSM2143 is an integrated differential amplifier intended to
receive balanced line inputs in audio applications requiring a
high level of immunity from common-mode noise. The device
provides a typical 90 dB of common-mode rejection (CMR),
which is achieved by laser trimming of resistances to better than
0.005%.
Additional features of the device include a slew rate of 10 V/µs
and wide bandwidth. Total harmonic distortion (THD) is less
than 0.004% over the full audio band, even while driving low
impedance loads. The SSM2143 input stage is designed to
handle input signals as large as +28 dBu at G = 1/2. Although
primarily intended for G = 1/2 applications, a gain of 2 can be
realized by reversing the +IN/–IN and SENSE/REFERENCE
connections.
When configured for a gain of 1/2, the SSM2143 and SSM2142
Balanced Line Driver provide a fully integrated, unity gain
solution to driving audio signals over long cable runs. For
similar performance with G = 1, see SSM2141.
–6 dB Differential
Line Receiver
SSM2143
FUNCTIONAL BLOCK DIAGRAM
12k Ω
6k Ω
–IN
12k Ω
6kΩ
+IN
SSM2143
SENSE
V+
V_OUT
V–
REFERENCE
PIN CONNECTIONS
Epoxy Mini-DIP (P Suffix)
and
SOIC (S Suffix)
REF 1
–IN 2
+IN 3
V– 4
8 NC
SSM2143
TOP VIEW
(NOT TO SCALE)
OP-482
7 V+
6 VOUT
5 SENSE
NC = NO CONNECT
REV. 0
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