Laser 2000

Gated Integrating Amplifier


High Sensitivity Gated Integrating Amplifier designed for fast switching (1 µs) and an integrated analogue output.

The GIA series of gated integrating amplifiers employ dual monolithic switched integrators. This design results in very low leakage error, charge injection error and pickup. The precision input stage is configurable for current or voltage inputs, providing flexibility for the user.

The GIA series of gated integrators is useful for signal processing in a wide range of applications such as photodiode monitoring and time domain signal analysis. The output is a voltage linearly proportional to the integral of the input during a period of time set by a TTL-compatible gate. Between gates, the output is held constant for readout or digital conversion via an external A/D-converter or I/O-card (not included).

The fast response time at high signal-noise-ratio makes the GIA series particularly useful in systems control feedback loops and online production control.

The GIA series is insensitive to electromagnetic interference by design, an important factor when working in ‘dirty’ industrial environments. The case wings allow you to mount the amplifier on standard 25mm and 1″ optical table tops and are useful for OEM applications. 19″ rack mounting is also available.


  • Fast switching 1 µs max.
  • Fast settling 25 µs max. to 0.1%
  • Output integrating analogue
  • Dimensions (2 channel unit) – 130 x 66 x 12 (W x H x L)


  • Sensitive photodiode pre-amplification
  • Optical pulse energy measurement
  • Signal recovery
  • OEM applications
GIA100 Datasheet

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