This document introduces LT3482, an integrated DC/DC step-up converter and accurate current monitor, which can support up to 90V APD bias voltage and provide better than 10% accuracy over four decades of dynamic range (250nA to 2.5mA).
The document introduces the LT3482 as an integrated monolithic DC/DC step-up converter and accurate current monitor designed to support Avalanche Photo Diode (APD) receiver modules. It addresses the need for compact support circuitry, specifically providing up to 90V of APD bias voltage with a precision current monitor offering better than 10% accuracy over four decades of dynamic range.
The device can support up to a 90V APD bias voltage.
The current monitor provides better than 10% accuracy over four decades of dynamic range.
The design requires the transient response to be less than 100ns for an input current step of two decades.