Analog Devices ADA4932-x differential ADC driver

The ADA4932-x is the next-generation AD8132 with higher performance, and lower noise and power consumption. It is suitable for driving high-performance ADCs as a single-ended-to-differential or differential-to-differential amplifier.

The output common-mode voltage is user adjustable using an internal common-mode feedback loop, allowing the ADA4932-x output to match the input of the ADC. The internal feedback loop also provides output balance as well as suppression of even-order harmonic distortion products.

With the device, differential gain configurations are realised with an external four-resistor feedback network that determines the closed-loop gain of the amplifier.

The ADA4932-x is fabricated using the silicon-germanium complementary bipolar process, enabling it to achieve low levels of distortion and noise at low power consumption.

The low offset and dynamic performance make it suitable for a wide variety of data acquisition and signal processing applications.

It is available in a Pb-free, 3 × 3 mm 16-lead LFCSP (ADA4932-1, single) or a Pb-free, 4 × 4 mm 24-lead LFCSP (ADA4932-2, dual). The pinout has been optimised to facilitate PCB layout and minimise distortion.