MAX4208AUA+

The MAX4208AUA+ is an ultra low offset/drift, precision instrumentation amplifier with REF buffer in 8 pin µMAX package. It features exceptional precision specifications, low power consumption, rail to rail output, excellent gain band width product & buffered REFIN/MODE input in a very small package. Device use a spread spectrum, autozeroing technique that constantly measures and corrects input offset, eliminating drift over time and temperature and effect of 1/f noise. This technique achieves less than 20μV offset voltage, allows ground sensing capability, provides ultra low CMOS input bias current and increased common mode rejection performance. It provides high impedance inputs optimized for small signal differential voltages (±100mV) and gain bandwidth product of 750KHz. It provides an adjustable gain with two external resistors or unity gain with FB connected to OUT. It is used in strain gauge amplifiers, precision low side current sense and differential voltage amplification.

• Supply voltage range is ± 1.425V to ± 2.75V, 2.85V to 5.5V
• Automotive operating temperature range from -40°C to 125°C
• Spread spectrum, auto-zero amplifier improve DC characteristics to maximize sensor performance
• Input offset voltage of ±20μV (max) at +25°C, ±0.25% (max) gain error
• Low 0.2μV/°C offset voltage drift, 1pA CMOS input bias current
• True ground sensing with rail to rail output, 750KHz gain bandwidth product
• Buffered REF input for high accuracy and bipolar operation
• Supply current of 750μA
• Supply current at shutdown mode is 1.4μA
• Input common mode rejection ratio (CMRR) is 135dB & power supply rejection ratio (PSRR) is 125dB

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Notas

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