Texas Instruments OPA1632
The OPA1632 is a fully differential amplifier (FDA) designed to drive high-performance audio analog-todigital converters (ADCs) or as a predriver for class-D amplifiers. The OPA1632 delivers excellent audio quality, very low noise, large output voltage swing, and high current drive. The OPA1632 has an excellent gain bandwidth of 180 MHz, and a very fast slew rate of 72 V/μs that helps to produce exceptionally low distortion.FEATURES
● Excellent sound quality● Ultra low distortion: 0.000028%
● Low noise: 1.25 nV/√Hz
● High speed: – Slew rate: 72 V/μs – Gain bandwidth product: 180 MHz
● Fully differential architecture: – Balanced input and output converts single- ended input to balanced differential output
● Wide supply range: ±2.5 V to ±15 V
● Shutdown current: 0.85 mA (VS = ± 5 V)
● Temperature range: –40°C to +85°C 2
APPLICATIONS
● Professional audio mixer or control surface● Professional microphones and wireless systems
● Professional speaker systems
● Professional audio amplifier
● Soundbar
● Turntable
● Professional video camera
● Guitar and other instrument amplifier
● Data acquisition (DAQ) 3
DESCRIPTION
A very low input voltage noise of 1.25 nV/√Hz further provides maximum signal-tonoise ratio and dynamic range. The flexibility of the fully differential architecture allows for easy implementation of a single-ended to fully differential output conversion. Differential output reduces even-order harmonics and minimizes common-mode noise interference.