AD8275ARMZ-R7

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. It 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-to-rail 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 common-mode rejection of 80 dB. Low offset and low offset drift, combined with its fast settling time, make the AD8275 suitable for a variety of data acquisition applications where accurate and quick capture is required. It can be used as an analog front end, or it can follow buffers to level translate high voltages to a voltage range accepted by the ADC. In addition, the AD8275 can be configured for differential outputs if used with a differential ADC. It is available in a space-saving, 8-lead MSOP and is specified for performance over the -40°C to +85°C temperature range.

Applications

• Level translator
• ADC driver
• Instrumentation amplifier building block
• Automated test equipment

Key features

• Translates ±10 V to +4 V
• Drives 16-bit SAR ADCs
• Small MSOP package
• Input overvoltage: +40 V to −35 V (V_S = 5 V)
• Fast settling time: 450 ns to 0.001%
• Rail-to-rail output
• Wide supply operation: +3.38 to +15 V
• High CMRR: 80 dB
• Low gain drift: 1 ppm/°C
• Low offset drift: 2.5 μV/°C