ADA4355 Photodetector Receiver μModule® Analog Devices Inc. ADA4355 Photodetector Receiver μModule® provides instrument-level performance for measuring high-speed/low-level currents. This module comes in a small form-factor with 75% space savings and measures currents in the ranges of microamperes to picoamperes. The ADA4355 Module includes a 14-bit and 125MSPS ADC for a current-to-bits solution. This device can measure pulses that detects a closely spaced event in reflectometry applications. Typical applications include communication, instrumentation, general-purpose, aerospace, and defence.