GENERAL DESCRIPTION

The SSM2275 and SSM2475 use the Butler Amplifier front end, which combines both bipolar and FET transistors to offer the accuracy and low noise performance of bipolar transistors and the slew rates and sound quality of FETs. This product family includes dual and quad rail-to-rail output audio amplifiers that achieve lower production costs than the industry standard OP275 (the first Butler Amplifier offered by Analog Devices). This lower cost amplifier also offers operation from a single 5 V supply, in addition to conventional ±15 V supplies. The ac performance meets the needs of the most demanding audio applications, with 8 MHz bandwidth, 12 V/µs slew rate and extremely low distortion.

FEATURES

Single or Dual-Supply Operation

Excellent Sonic Characteristics

Low Noise: 7 nV/√Hz

Low THD: 0.0006

Rail-to-Rail Output

High Output Current: ±50 mA

Low Supply Current: 1.7 mA/Amplifier

Wide Bandwidth: 8 MHz

High Slew Rate: 12 V/μs

No Phase Reversal

Unity Gain Stable

Stable Parameters Over Temperature

APPLICATIONS

Multimedia Audio

Professional Audio Systems

High Performance Consumer Audio

Microphone Preamplifier

MIDI Instruments