Intersil ISL28407 precision amplifiers

Intersil Corp. has expanded its family of precision amplifiers, introducing a set of 40 V low power, high ESD products that claim to provide excellent DC accuracy and noise performance. The new quad amplifiers are ideally suited for 12-bit to 24-bit process control, instrumentation and data acquisition applications.

Designed on Intersil's PR40 advanced bipolar process, the ISL28407, ISL28417, and ISL28408 all meet the low noise requirements for high gain front ends in industrial control designs while reducing total power consumption for high signal count applications.     

The ISL28407 operates from 4.5 V to 40 V with an ultra-low bias current drift of 0.3 pA/°C over temperature (-40 to +85°C), which is 30 percent lower than competitive quad precision amps. The ISL28407's low offset of 90 µV maximum and offset drift of 0.8 µV/°C maximum provide high DC accuracy over temperature. It features an industry-leading combination of low power (290 µA maximum per channel), 1 MHz bandwidth, low input bias current drift (0.3 pA/°C) and low noise (13 nV/vHz at 1 kHz).     

The ISL28417 is designed for sensor front ends, DAC buffering, precision voltage regulation or low noise instrumentation applications that need a diverse range of signals. It delivers very high performance while consuming only 530 µA maximum per channel, with low frequency noise of 250 nV peak-peak (0.1 Hz to1 to 10 Hz) and 8 nV/vHz at 1 kHz. Offset voltage is 70 µV maximum, with offset drift of only 0.75 µV/°C maximum.    

Also available is the ISL28408, which features half the power consumption of the ISL28417 with single supply operation and rail-to-rail output. Its wide input voltage range supports input signals down to 0.5 V below the negative supply rail. The wide dynamic range rail-to-rail output, low offset of 230 µV maximum, low noise (15.8 nV/vHz at 1 kHz) and low power (250 µA maximum per channel) with a wide voltage range single supply (3 V to 40 V) or dual supply (±1.5 V to ±20 V), makes the ISL28408 ideal for industrial and instrumentation applications.     

More information about the ISL28407 precision amplifiers at

This article originally appeared in EETimes Europe.

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