This document introduces the features of ADA4938-1. It is an ultra-low distortion differential ADC driver with extremely low harmonic distortion, low input voltage noise, high speed, fast settling time, fast overdrive recovery time, 1 mV typical offset voltage, external adjustable gain, differential to differential or single-ended to differential operation, adjustable output common-mode voltage, wide supply voltage range: +5 V and ±5 V, lead-free 3 mm x 3 mm LFCSP package.
The ADA4938-1 is a low noise, high speed differential amplifier designed to drive high performance ADCs with resolutions up to 16 bits. It operates from DC to 70 MHz and features extremely low harmonic distortion, with -108 dBc HD2 at 10 MHz and -125 dBc HD3 at 10 MHz.
The device supports both dual supply operation (±5V) and single supply operation (+5V), offering an adjustable output common-mode voltage to match ADC inputs. It is available in a Pb-free, 3 mm x 3 mm LFCSP package and operates over the industrial temperature range of -40°C to +85°C.
| -3 dB Bandwidth (G=1, Differential Input) | 1.5 GHz |
|---|---|
| Slew Rate (G=1) | 4700 V/us |
| Settling Time to 0.01% | 8.5 ns |
| Input Voltage Noise (RTI) | 2.2 nV/VHz |
| Offset Voltage | 1 mV typical |
| Operating Temperature Range | -40°C to +85°C |
| Package Type | 3 mm x 3 mm LFCSP |
The device supports operation from DC to 70 MHz.
The typical offset voltage is 1 mV.