AD8275 Datasheet | Analog Devices

FEATURES Translates ±10 V to +4 V Drives 16-bit SAR ADCs Small MSOP package Input overvoltage: +40 V to - 35 V (VS = 5 V) Fast settling time: 450 ns to 0.001% Rail-to-rail output Wide supply operation: +3.3 V to +15 V High CMRR: 80 d B Low gain drift: 1 ppm/°C Low offset drift: 2.5 μV/°C APPLICATIONS Level translator ADC driver Instrumentation amplifier building block Automated test equipment GENERAL DESCRIPTION The AD8275 is a G = 0.2 difference amplifier that can be used to translate ±10 V signals to a +4 V level. It solves the problem typically encountered in industrial and instrumentation applications where ±10 V signals must be interfaced to a single-supply 4 V or 5 V ADC. The AD8275 interfaces the two signal levels, simplifying design. The AD8275 has fast settling time of 450 ns and low distortion, making it suitable for driving medium speed successive approximation (SAR) ADCs. Its wide input voltage range and rail-torail outputs make it an easy to use building block. Single-supply operation reduces the power consumption of the amplifier and helps to protect the ADC from overdrive conditions. Internal, matched, precision laser-trimmed resistors ensure low gain error, low gain drift of 1 ppm/°C (maximum), and high mon-mode rejection of 80 d B. Low offset and low offset drift, bined with its fast settling time, make the AD8275 suitable for a variety of data acquisition applications where accurate and quick capture is required. G = 0.2, Level Translation, 16-Bit ADC Driver AD8275 +10V - 10V VIN PIN CONFIGURATION REF1 1 - IN 2 +IN 3 - VS 4 TOP VIEW (Not to Scale) 8 REF2 7 +VS 6 OUT 5 SENSE 07546-001 Figure 1. TYPICAL APPLICATION +5V 0.1µF 0.1µF 50kΩ 2 - IN 7 +VS 10kΩ 5 SENSE OUT 6 50kΩ 3 +IN 20kΩ REF2 8 20kΩ 1 REF1 - VS 4 +4.048V +2.048V +0.048V 33Ω 2.7n F IN+ AD7685 IN-...