Linear Technology introduced the LT5400, its first family of precision-matched resistors designed for high-performance signal conditioning applications in different amplifiers, precision dividers, references and bridge circuits.
Three resistor network options are in full production with resistor ratios of 1:1 and 10:1 quad 10 kΩ resistors, quad 100 kΩ resistors and dual 10 kΩ/dual 100 kΩ resistors. Each chip has guaranteed matching of 0,01% from -40°C to 85°C, and 0,0125% from -40°C to 125°C.
The LT5400 matching is enhanced with ‘matching for CMRR,’ a feature that guarantees CMRR performance when configured in a difference amplifier circuit. The LT5400 matching for CMRR is only 0,005%, a two-fold improvement over independent resistors with 0,01% matching.
As a replacement for discrete resistors, the small MSOP package minimises thermal gradients and ensures consistent conditions over time and temperature for all four resistors. Since the LT5400 is based on conventional silicon fabrication and assembly, it is relatively insensitive to shock, vibration, humidity and temperature extremes.
A high-temperature option is available that is fully specified from -55°C to 150°C. With its robustness, the LT5400 is suitable for instrumentation and test equipment in heavy industrial, military and automotive environments. Standard production processes ensure LT5400 availability with consistently short lead times.
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