SSM2135

Dual Single-Supply Audio Operational Amplifier SSM2135 FEATURES Excellent sonic characteristics High output drive capability 5.2 nV/√Hz equivalent input noise @ 1 kHz 0.003% THD + N (VOUT = 1 V p-p @ 1 kHz) 3.5 MHz gain bandwidth Unity-gain stable Low cost PIN CONNECTIONS OUT A 1 8 V+ –IN A 2 SSM2135 7 OUT B +IN A 3 TOP VIEW 6 –IN B (Not to Scale) V–/GND 4 5 +IN B 00349-002 Figure 1. 8-Lead Narrow Body SOIC (R Suffix) APPLICATIONS Multimedia audio systems Microphone preamplifiers Headphone drivers Differential line receivers Balanced line drivers Audio ADC input buffers Audio DAC l-V converters and filters Pseudoground generators GENERAL DESCRIPTION The SSM2135 dual audio operational amplifier permits excellent performance in portable or low power audio systems, with an operating supply range of 4 V to 36 V or ±2 V to ±18 V. The unity-gain stable device has very low voltage noise of 5.2 nV/√Hz, and total harmonic distortion plus noise below 0.01% over normal signal levels and loads. Such characteristics are enhanced by wide output swing and load drive capability. A unique output stage permits output swing approaching the rail under moderate load conditions. Under severe loading, the SSM2135 still maintains a wide output swing with ultralow distortion. Particularly well suited for computer audio systems and portable digital audio units, the SSM2135 can perform preamplification, headphone and speaker driving, and balanced line driving and receiving. Additionally, t...