AD8476

Data Sheet FEATURES Low Power, Unity Gain, Fully Differential Amplifier and ADC Driver AD8476 FUNCTIONAL BLOCK DIAGRAM 7 –VS 8 INP 6 NC 5 –OUT Very low power 330 μA supply current Extremely low harmonic distortion −126 HD2 at 10 kHz −128 HD3 at 10 kHz Fully differential or single-ended inputs/outputs Differential output designed to drive precision ADCs Drives switched capacitor and Σ-Δ ADCs Rail-to-rail outputs VOCM pin adjusts output common mode Robust overvoltage up to 18 V beyond supplies High performance Suitable for driving 16-bit converter up to 250 kSPS 39 nV/√Hz output noise 1 ppm/°C gain drift maximum 200 μV maximum output offset 10 V/μs slew rate 6 MHz bandwidth Single supply: 3 V to 18 V Dual supplies: ±1.5 V to ±9 V 10kΩ 10kΩ 10kΩ AD8476 10kΩ +VS 2 VOCM 3 +OUT 4 INN 1 NOTES 1. NC = NO CONNECT. DO NOT CONNECT TO THIS PIN. Figure 1. 8-Lead MSOP 13 –VS 15 –VS 14 –VS 16 –VS INP 1 INP 2 INN 3 INN 4 10kΩ 10kΩ 10kΩ 12 NC 11 –OUT AD8476 10 +OUT 10kΩ 9 VOCM APPLICATIONS ADC driver Differential instrumentation amplifier building block Single-ended-to-differential converter Battery-powered instruments +VS 5 +VS 6 +VS 7 +VS 8 10195-001 NOTES 1. NC = NO CONNECT. DO NOT CONNECT TO THIS PIN. Figure 2. 16-Lead LFCSP GENERAL DESCRIPTION The AD8476 is a very low power, fully differential precision amplifier with integrated gain resistors for unity gain. It is an ideal choice for driving low power, high performance ADCs as a single-ended-to-differential or differe...