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 settle time and low distortion making it suitable for driving fast, 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.
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 diff-erential 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.
|Title||Content Type||File Type|
|AD8275: G = 0.2, Level Translation, 16-Bit ADC Driver Data Sheet (Rev A, 08/2010) (pdf, 560 kB)||Data Sheets|
|CN-0225: High Impedance, High CMR, ±10 V Analog Front End Signal Conditioner for Industrial Process Control and Automation (pdf, 640 kB)||Circuit Note|
|CN-0213:Complete High Speed, High CMRR Precision Analog Front End for Process Control (pdf, 288 kB)||Circuit Note|
|CN-0209: Fully Programmable Universal Analog Front End for Process Control Applications (pdf, 150 kB)||Circuit Note|
AD8275: 16 Bit Attenuating ADC Driver Interfaces HV Sensors to ADC
Learn how to simplify design and reduce cost by using a single IC to interface +/-10V industrial signals to a +5V single-supply ADC.
|Test & Instrumentation Solutions Bulletin, Volume 10, Issue 3 (pdf, 1334 kB)||Solutions Bulletins|
|RAQs index||Rarely Asked Questions||HTML|
|Glossary of EE Terms||Glossary||HTML|
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