MAX4239 - Maxim

MAX4239 Ultra-Low Offset/Drift / Low-Noise / Precision SOT23 Amplifiers

The MAX4238/MAX4239 are low-noise, low-drift, ultrahigh 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 outpu.

Features

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● DC Performance Ideal for High-Precision Sensor Interface
• Ultra-Low, 0.1µV Offset Voltage
• 2.0µV (max) at +25°C
• 2.5µV (max) at -40°C to +85°C
• 3.5µV (max) at -40°C to +125°C
• Low 10nV/°C Drift
• Low Noise: 1.5µVP-P from DC to 10Hz
• 150dB AVOL, 140dB PSRR, 140dB CMRR
• High Gain-Bandwidth Product
• 1MHz (MAX4238)
• 6.5MHz (MAX4239)
• Ground-Sensing Input
• Rail-to-Rail Output (RL = 1kΩ)
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● Low Power Consumption Reduces System Power
• Single 2.7V to 5.5V Supply Voltage Range
• 600µA Supply Current
• 0.1µA Shutdown Mode Pin Configurations appear at end of data sheet..