Signal Conditioning Operational Amplifiers (Op Amps) Zero Drift Amplifiers

LTC7652 - Zero-Drift Operational Amplifier

Features

  • Guaranteed Max. Offset 5µV
  • Guaranteed Max. Offset Drift
    0.05µV/°C
  • Typ. Offset Drift 0.01µV/°C
  • Excellent Long Term Stability
    100nV/ rt Month
  • Guaranteed Max. Input Bias Current 30pA
  • Over Operating Temperature Range
    Guaranteed Min Gain: 120dB
    Guaranteed Min CMRR: 120dB
    GuaranteedM
  • Guaranteed Min. Gain 120dB
  • Guaranteed Min. CMRR 120dB
  • Guaranteed Min. PSRR 120dB
  • Single Supply Operation 4.75V to 16V
  • (Input Voltage Range Extends to Ground)
  • External Capacitors can be Returned to V- with No Noise Degradation

Typical Application

LTC7652 Typical Application
LTC7652 Typical Application

Description

The LTC1052 and LTC7652 are low noise zero-drift op amps manufactured using Linear Technology’s enhanced LTCMOS silicon gate process. Chopper-stabilization constantly corrects offset voltage errors. Both initial offset and changes in the offset due to time, temperature and common mode voltage are corrected. This, coupled with picoampere input currents, gives these amplifiers unmatched performance.

Low frequency (1/f) noise is also improved by the chopping technique. Instead of increasing continuouslyat a 3dB/octave rate,the internal chopping causes noise to decrease at low frequencies.

The chopper circuitry is entirely internal and completely transparent to the user. Only two external capacitors are required to alternately sample-and-hold the offset correction voltage and the amplified input signal. Control circuitry is brought out on the 14-pin and 16-pin versions to allow the sampling of the LTC1052 to be synchronized with an external frequency source.

Packaging

For complete and up to date package information and drawings, please refer to our packaging page

Order Info

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Click here to view our complete list of demo boards

Applications

  • Thermocouple Amplifiers
  • Strain Gauge Amplifiers
  • Low Level Signal Processing
  • Medical Instrumentation

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LTC7652

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