AD8275BRMZ

The AD8275 is a G = 0.2 difference amplifier designed to convert ±10 V signals to +4 V levels. It addresses a common challenge in industrial and instrumentation applications where ±10 V signals must interface with 4 V or 5 V single-supply ADCs. The AD8275 interfaces with both signal levels, simplifying the design. The AD8275 features a fast 450 ns settling time and low distortion, making it suitable for driving mid-speed successive approximation register (SAR) ADCs. Its wide input voltage range and rail-to-rail output make it an easy-to-use building block. Single-supply operation reduces amplifier power consumption and protects the ADC from overdrive. Integrated precision laser-trimmed matched resistors ensure low gain error, low gain drift (1 ppm/°C maximum), and high common-mode rejection (80 dB). The AD8275's low offset, low offset drift, and fast settling time make it well-suited for data acquisition applications requiring precise and rapid capture. The AD8275 can be used as an analog front end or placed after a buffer to convert high-level voltages to within the ADC's acceptable input range. Additionally, when used with a differential ADC, the AD8275 can be configured for differential output. The device is available in a space-saving 8-lead MSOP package and is rated for the -40°C to +85°C temperature range.

Applications

• Level translators
• ADC drivers
• Instrumentation amplifier building blocks
• Automated test equipment

Key features

• ±10 V to +4 V conversion
• Drives 16-bit SAR ADC
• 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 voltage range: +3.3 V to +15 V
• High CMRR: 80 dB
• Low gain drift: 1 ppm/°C
• Low offset drift: 2.5 μV/°C