ADI AD8230YRZ-REEL7

The AD8230 is a low drift, differential sampling, precision instrumentation amplifier. Its auto-zero feature reduces offset voltage drift to below 50 nV/°C. The AD8230 is well suited for thermocouple and bridge sensor applications. It features a high CMRR with a minimum value of 110 dB, enabling rejection of line noise in measurements where the sensor is located far from the instrument. The 16 V rail-to-rail common-mode input range accommodates noisy environments where ground potential varies by several volts. Low-frequency noise is kept to a minimum of 3 μV p-p, making the AD8230 ideal for applications requiring extremely high DC accuracy. In addition, the AD8230 maintains high performance over the extended industrial temperature range of -40°C to +125°C.

Gain is set using two external resistors. With matched external resistors, the AD8230 achieves significantly better gain stability than instrumentation amplifiers that use a single resistor for gain setting. In addition to gain settings ranging from 10 to 1000, users can also adjust the output offset voltage.

The AD8230 offers a rich set of features and is easy to use. Its auto-zero topology greatly reduces the input and output transients typically associated with commutating auto-zero or chopper instrumentation amplifiers. It operates from ±4 V to ±8 V (+8 V to +16 V) supplies and is available in an 8-lead SOIC package.

• Resistor-programmable gain range: 10 to 1000
• Supply voltage range: ±4 V to ±8 V
• Rail-to-rail input and output
• High performance maintained over −40 °C to +125 °C
• Excellent AC and DC performance
• CMR: 110 dB (min, 60 Hz, G = 70 to 1000)
• Offset voltage: 10 μV (max, RTI, ±5 V supply)
• Offset drift: 50 nV/°C (max)
• Gain nonlinearity: 20 ppm (max)

• Pressure measurement
• Temperature measurement
• Strain measurement
• Automotive diagnostics