AD8273

Very Low Distortion, Dual-Channel, High Precision Difference Amplifier AD8273 FEATURES ±4000 V HBM ESD Very low distortion 0.00025% THD + N (20 kHz) 0.0015% THD + N (100 kHz) Drives 600 Ω loads Two gain settings Gain of ½ (−6 dB) Gain of 2 (+6 dB) 0.05% maximum gain error 10 ppm/°C maximum gain drift Excellent ac specifications 20 V/μs minimum slew rate 800 ns to 0.01% settling time High accuracy dc performance 77 dB minimum CMRR 700 μV maximum offset voltage 14-lead SOIC package Supply current: 2.5 mA maximum per channel Supply range: ±2.5 V to ±18 V FUNCTIONAL BLOCK DIAGRAM +VS 11 12kΩ 2 6kΩ 12 12kΩ 3 12kΩ 6 6kΩ 6kΩ 13 14 10 06981-001 12kΩ 5 6kΩ 4 –VS Figure 1. 9 8 APPLICATIONS ADC drivers High performance audio Instrumentation amplifier building blocks Level translators Automatic test equipment Sine/cosine encoders GENERAL DESCRIPTION The AD8273 is a low distortion, dual-channel amplifier with internal gain setting resistors. With no external components, it can be configured as a high performance difference amplifier (G = ½ or 2), inverting amplifier (G = ½ or 2), or noninverting amplifier (G = 1½ or 3). The AD8273 operates on both single and dual supplies and only requires 2.5 mA maximum supply current for each amplifier. It is specified over the industrial temperature range of −40°C to +85°C and is fully RoHS compliant. Table 1. Difference Amplifiers by Category Low Distortion AD8270 AD8273 AD8274 AMP03 High Voltage AD628 AD629 Single-Supply Unidire...