The OPA1632 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 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. A
very low input voltage noise of 1.25 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 OPA1632 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 OPA1632 is characterized to
operate from –40°C to +85°C and is available in an SO-8 package and a
thermally-enhanced HVSSOP-8 PowerPAD™ integrated circuit package.
