Analogue / Linear / Mixed Signal ICs Self-calibrating zero-drift amplifier from LTC

Analogue / Linear / Mixed Signal ICs Self-calibrating zero-drift amplifier from LTC

2013/10/23

Linear Technology – zero-drift amplifier called LTC2057HV

Linear Technology has brought a zero-drift amplifier called LTC2057HV featuring self-calibrating circuitry that provides high DC precision and stability over changes in temperature, time, input range and supply voltage.

With 5µV input offset voltage, 0.025µV/°C offset drift and 220nV_P-P low frequency noise with no 1/f noise, the LTC2057HV offers more than 140dB dynamic range while operating on a 60V (±30V) supply. This wide dynamic range enables tiny signals to be amplified in the presence of much larger signals without saturating the amplifier or losing precision.  For applications requiring supply voltages up to 36V, a lower supply version of LTC2057 is available.

Specified over a -40°C to 125°C temperature range, the LTC2057 and LTC2057HV offer an optimal combination of low voltage noise, low current noise and low input bias current, while the zero-drift architecture cancels 1/f noise. Spurious artifacts normally associated with zero-drift amplifiers are suppressed, further extending the dynamic range, stability and useful signal bandwidth. The input common-mode range includes the negative rail and the output swings rail-to-rail, making the LTC2057 suitable for single- and dual-supply industrial, instrumentation and automotive applications.

The LTC2057 is specified for 30V supply operation while the LTC2057HV can operate on supplies up to 60V.  Both versions also work on 4.75V supplies and are fully specified over – -40°C to 85°C and -40°C to 125°C temperature ranges.

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