The AD8275 is a G=0.2 difference amplifier that can be used to
translate +/-10V signals to a +4V level. It solves the problem
typically encountered in industrial and instrumentation where
+/-10V signals must be interfaced to a single supply 4V or 5V
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 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.
The AD8275 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.
The AD8275 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
