Audio Line Driver using DRV135 with Balanced Output

The project presented here is a differential output amplifier that converts a single-ended audio signal input to a balanced output pair. This balanced audio project consists of high-performance OPAMPS with on-chip precision resistors.

The project presented here is a differential output amplifier that converts a single-ended audio signal input to a balanced output pair. This balanced audio project consists of high-performance OPAMPS with on-chip precision resistors. They are fully specified for high-performance audio applications and have excellent AC specifications, including low distortion (0.0005% at 1 kHz) and high slew rate (15 V/µs). The board is based on DRV135 from Texas Instruments.

Key Features

• Single-Ended Audio Input and Balanced Output
• Low Distortion: 0.0005% at f = 1 kHz
• Wide Output Swing: 17Vrms into 600 Ω
• High Capacitive Load Drive
• High Slew Rate: 15 V/µs
• Wide Supply Range: ±4.5 V to ±18 V @ 15mA without Load
• Low Quiescent Current: ±5.2 mA
• Companion to Audio Differential Line Receivers: INA134
• Improved Replacement for SSM2142
• PCB Dimensions 48.26 x 36.20 mm