MAX4238

Features:

 Ultra-Low, 0.1V Offset Voltage
     2.0V (max) at +25°C
     2.5V (max) at -40°C to +85°C
     3.5V (max) at -40°C to +125°C
 Low 10nV/oC Drift
 Specified over the -40oC to +125oC Automotive Temperature Range
 Low Noise: 1.5VP-P from DC to 10Hz
 150dB A_VOL, 140dB PSRR, 140dB CMRR
 High Gain-Bandwidth Product
     1MHz (MAX4238)
     6.5MHz (MAX4239)
 0.1A Shutdown Mode
 Rail-to-Rail Output (R_L = 1k)
 Low 600A Supply Current
 Ground-Sensing Input
 Single 2.7V to 5.5V Supply Voltage Range
 Available in a Space-Saving 6-Pin SOT23 Package

Application

Thermocouples
Strain Gauges
Electronic Scales
Medical Instrumentation
Instrumentation Amplifiers


Pinout




Description

The MAX4238/MAX4239 are low-noise, low-drift, ultra-high precision amplifiers that offer near-zero DC offset and drift through the use of patented autocorrelating zeroing techniques. This method constantly measures and compensates the input offset, eliminating drift over time and temperature and the effect of 1/f noise. Both devices feature Rail-to-Rail^® outputs, operate from a single 2.7V to 5.5V supply, and consume only 600PAA An active-low shutdown mode decreases supply cur-rent to 0.1A.

The MAX4238 is unity-gain stable with a gain-band-width product of 1MHz, while the decompensated  A V10V/V and a GBWP of MAX4239 is stable with 6.5MHz. The MAX4238/MAX4239 are available in 8-pin narrow SO and 6-pin SOT23 packages.