Date: 29/11/2010

Amplifier from ADI for apps where signals are interfaced to single-supply ADCs

Analog Devices, Inc. (ADI) has released a fully differential attenuating precision amplifier. The AD8475 amplifier solves a common problem in industrial, instrumentation and medical applications where signals up to ±10 V are interfaced to single-supply ADCs. The AD8475 can drive ADCs (analog-to-digital converters) with up to 18 bits of resolution and 4-MSPS (million sample per second) throughput. This amplifier features selectable attenuating gains of 0.4x and 0.8x and level shifting for differential inputs up to ±12 V. The AD8475 is suggested for driving low-voltage, high-precision differential input SAR ADCs in high-voltage applications, while saving board space and lowering power consumption.

In applications where signals up to ±10 V and ±5 V are interfaced to single-supply 5-V or 3-V ADCs, the AD8475 simplifies the design by integrating the two signal levels, eliminating the need for designers to use multiple components to achieve similar results. Features 10-nV/vHz output noise, 100-MHz bandwidth, 50-V/µsec slew rate, and low distortion of 110-dB THD+N makes them right choice for driving precision ADCs.

Package: 16-lead 3 mm x 3 mm LFCSP or 10-lead MSOP

Operating temperature range: -40°C to 85°C

Price: Each US$2.60 for 1K pieces

Availability: Now