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LT6238 - Rail-to-Rail Output 215MHz, 1.1nV/√Hz Op Amp/SAR ADC Driver

The LT®6236/LT6237/LT6238 are single/dual/quad low noise, rail-to-rail output op amps that feature 1.1nV/√Hz input referred noise voltage density and draw only 3.5mA of supply current per amplifier. These amplifiers combine very low noise and supply current with a 215MHz gain bandwidth product and a 70V/μs slew rate. Low noise, fast settling time and low offset voltage make this amplifier optimal to drive low noise, high speed SAR ADCs. The LT6236 includes a shutdown feature that can be used to reduce the supply current to less than 10μA.

This amplifier family has an output that swings within 50mV of either supply rail to maximize the signal dynamic range in low supply applications and is specified on 3.3V, 5V and ±5V supplies.

The LT6236/LT6237/LT6238 are upgrades to the LT6230/ LT6231/LT6232, offering similar performance with reduced wideband noise beyond 100kHz.

Features Low Noise: 1.1nV/√Hz Low Supply Current: 3.5mA/Amp Max Low Offset Voltage: 350μV Max Fast Settling Time: 570ns to 18-Bit, 2VP-P Output Low Distortion: THD = –116.8dB at 2kHz Wide Supply Range: 3V to 12.6V Output Swings Rail-to-Rail 215MHz Gain-Bandwidth Product Specified Temperature Range: –40°C to 125°C LT6236 Shutdown to 10μA Max LT6236 in Low Profile (1mm) ThinSOT™ Package Dual LT6237 in 3mm × 3mm 8-Lead DFN and 8-Lead MSOP Packages, LT6238 in 16-Lead SSOP Package Typical Application

Applications 16-Bit and 18-Bit SAR ADC Drivers Active Filters Low Noise, Low Power Signal Processing Packaging