OPA837

Product Folder Order Now Technical Documents Tools & Software Support & Community Reference Design OPA837, OPA2837 SBOS673D – SEPTEMBER 2017 – REVISED DECEMBER 2018 OPAx837 Low-Power, Precision, 105-MHz, Voltage-Feedback Op Amp 1 Features 1 Bandwidth: 105 MHz (AV = 1 V/V) Very Low (Trimmed) Supply Current: 600 µA Gain Bandwidth Product: 50 MHz Slew Rate: 105 V/µs Negative Rail Input, Rail-to-Rail Output Single-Supply Operating Range: 2.7 V to 5.4 V 25°C Input Offset: ±130 µV (Max) Input Offset Voltage Drift (DCK Package): < ±1.6 µV/°C (Maximum) Input Voltage Noise: 4.7 nV/√Hz (> 100 Hz) HD2: –120 dBc at 2 VPP, 100 kHz HD3: –145 dBc at 2 VPP, 100 kHz Settling Time: 35 ns, 0.5-V Step to 0.1% 5-µA Shutdown Current With Fast Recovery From Shutdown for Power Scaling Applications 2 Applications 12-Bit to 16-Bit, Low-Power SAR Drivers Precision ADC Reference Buffers Very-Low-Power Active Filters Low-Power Transimpedance Amplifiers Sensor Signal Conditioning Wearable Devices Low-Side Current Sensing Low-Power, Low-Noise, Precision, Single-Ended SAR ADC Driver With True Ground Input and Output Range + 5.0 V REF5040 4.096 V +VCC 0V 0 V 3.8 V Gain = 1.05 V/V + PD OPA837 ± ±VCC 499 Ÿ GND 4.0 V 22 Ÿ 2.2 nF 22 Ÿ 10.0 kŸ GND 3.3 V ADS8860 16-Bit SAR 1 MSPS GND 3 Description The OPA837 and OPA2837 are single- and dualchannel unity-gain stable, voltage-feedback amplifiers that provide among the highest MHz per mW of bandwidth versu...