OPA1633DGNR

The OPA1633 is a fully differential amplifier (FDA) designed to drive high-performance audio analog-to-digital converters (ADCs) or as a predriver for class-D amplifiers. The OPA1633 delivers excellent audio quality, very low noise, a large output voltage swing, and a high current drive. The OPA1633 has an excellent gain bandwidth of 200 MHz and a very fast slew rate of 80 V/μs that helps produce exceptionally low distortion. A very low input voltage noise of 1.1 nV/√Hz further provides maximum signal-to-noise 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. The OPA1633 provides excellent performance when used to drive high-performance audio ADCs such as the PCM1804. A shutdown feature is included to save power when the device is not in use. The OPA1633 is characterized to operate from -40°C to +85°C and available in an SO-8 package and a thermally enhanced, HVSSOP PowerPAD integrated circuit package.

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)
• Pin-compatible upgrade to the OPA1632

Key features

• Excellent sound quality
• Ultra low distortion: 132 dB
• Low noise: 1.1 nV/√Hz
• High speed:
• Slew rate: 80 V/μs
• Gain bandwidth product: 200 MHz
• Fully differential architecture:
• Balanced input and output converts single-ended input to balanced differential output
• Wide supply range: ±2.5 V to ±17.5 V
• Shutdown current: 0.77 mA (VS = ± 5 V)
• Temperature range: -40°C to +85°C
• Packages: HVSSOP-8, SOIC-8