SSM2142

a FEATURES Transformer-Like Balanced Output Drives 10 V RMS Into a 600 ⍀ Load Stable When Driving Large Capacitive Loads and Long Cables Low Distortion 0.006% typ 20 Hz–20 kHz, 10 V RMS into 600 ⍀ High Slew Rate 15 V/␮s typ Low Gain Error (Differential or Single-Ended); 0.7% typ Outputs Short-Circuit Protected Available In Space-Saving 8-Pin Mini-DIP Package Low Cost APPLICATIONS Audio Mix Consoles Distribution Amplifiers Graphic and Parametric Equalizers Dynamic Range Processors Digital Effects Processors Telecommunications Systems Industrial Instrumentation Hi-Fi Equipment Balanced Line Driver SSM2142 FUNCTIONAL BLOCK DIAGRAM VIN 50Ω +OUT FORCE 10kΩ +OUT SENSE – OUT SENSE ALL RESISTORS 30kΩ UNLESS OTHERWISE INDICATED GND 50Ω – OUT FORCE 10kΩ GENERAL DESCRIPTION The SSM2142 is an integrated differential-output buffer amplifier that converts a single-ended input signal to a balanced output signal pair with high output drive. By utilizing low noise thermally matched thin film resistors and high slew rate amplifiers, the SSM2142 helps maintain the sonic quality of audio systems by eliminating power line hum, RF interference, voltage drops, and other externally generated noise commonly encountered with long audio cable runs. Excellent rejection of common-mode noise and offset errors is achieved by laser trimming of the onboard resistors, assuring high gain accuracy. The carefully designed output stage of the SSM2142 is capable of driving difficult loads, yielding low dist...