The LTC2057HV is a high voltage, low noise, zero-drift operational amplifier that offers precision DC performance over a wide supply range of 4.75V to 36V or 4.75V to 60V for the LTC2057HV. Offset voltage and 1/f noise are suppressed, allowing this amplifier to achieve a maximum offset voltage of 4µV and a DC to 10Hz input noise voltage of 200nVP-P (typ).

The LTC2057’s self-calibrating circuitry results in low offset voltage drift with temperature, 0.015µV/°C (max), and zero-drift over time. The amplifier also features an excellent power supply rejection ratio (PSRR) of 160dB and a common mode rejection ratio (CMRR) of 150dB (typ).

The LTC2057HV from Linear Technology is a zero-drift amplifier 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 220nVP-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.

The LTC2057 is available in 3mm x 3mm DFN, MSOP-8 and SOIC-8 packages, as well as an MSOP-10 package with a pinout that enables a guard ring to be easily routed around the input to preserve the high precision and low noise performance at high source impedance. Pricing starts at $1.54 each for the LTC2057 and $2.19 each for the LTC2057HV in quantities of 1000.

For more information, visit www.linear.com/product/LTC2057.

Summary of Features of the LTC2057HV:

  • Supply Voltage Range: 4.75V to 60V
  • Offset Voltage: 5µV (Maximum)
  • Offset Voltage Drift: 0.025µV/°C (Maximum, –40°C to 125°C)
  • Input Noise Voltage
  • 220nVP-P, DC to 10Hz (Typ)
  • 13nV/vHz, 1kHz (Typ)
  • Input Common Mode Range: V– – 0.1V to V+ – 1.5V
  • Rail-to-Rail Output
  • AVOL: 150dB (Typ)
  • PSRR: 160dB (Typ)
  • CMRR: 150dB (Typ)
  • Shutdown Mode
  • MS10 Package Includes Guard Ring Pins

Typical Application

Applications

  • High Resolution Data Acquisition
  • Reference Buffering
  • Test and Measurement
  • Electronic Scales
  • Thermocouple Amplifiers
  • Strain Gauges
  • Low-Side Current Sense
  • Automotive Monitors and Control

About Linear Technology

Linear Technology Corporation, a manufacturer of high performance linear integrated circuits, was founded in 1981, became a public company in 1986 and joined the S&P 500 index of major public companies in 2000. Linear Technology products include high performance amplifiers, comparators, voltage references, monolithic filters, linear regulators, DC-DC converters, battery chargers, data converters, communications interface circuits, RF signal conditioning circuits, µModule products, and many other analog functions.  Applications for Linear Technology’s high performance circuits include telecommunications, cellular telephones, networking products such as optical switches, notebook and desktop computers, computer peripherals, video/multimedia, industrial instrumentation, security monitoring devices, high-end consumer products such as digital cameras and MP3 players, complex medical devices, automotive electronics, factory automation, process control, and military and space systems.

Linear Technology (UK) Limited
Tel: +44 (0)1628 477066

E-mail: uksales@linear.com

Web site: www.linear.com

Website for product information:  http://www.linear.com/product/LTC2057