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%.
   
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/μs typ
    Wide Bandwidth: 7 MHz typ (G = 1/2)
    Two Gain Levels Available: G = 1/2 or 2
    Low Cost