ADA4355 Datasheet | Analog Devices

FEATURES High performance, current input, data acquisition µModule that includes a TIA, analog filter, ADC driver, and ADC 3 selectable TZ settings: 2 kΩ, 20 kΩ, and 200 kΩ Internal 1.8 V LDO for the ADC All passive ponents including supply decoupling Small form factor: 12.00 mm × 6.00 mm CSP_BGA Operation from a single 3.3 V supply Full-scale input current to 800 µA (TZ = 2 kΩ) Fast input overload recovery High analog input current to 40 m A Analog filter for noise reduction and antialias filtering Selectable 1.0 MHz and 100 MHz LPF bandwidth Low input referred current noise: 16 p A rms TZ = 200 kΩ, 65,536 averages, 1 MHz analog filter Supports input pulse widths down to 10 ns 14-bit ADC with sample rate up to 125 MSPS Serial LVDS data output SPI control interface Quiescent power: 546 m W, LDO enabled Temperature range: - 40°C to +85°C APPLICATIONS Current to voltage conversion Chemical analyzers Mass spectroscopy Time of Flight Fiber optic sensing OTDR Optical amplifiers Reconfigurable optical add and drop multiplexers (ROADM) GENERAL DESCRIPTION The ADA4355 is a plete, high performance, current input µModule®. For space savings, the ADA4355 includes all the required active and passive ponents to realize a plete current to bits data acquisition solution, supporting a small form factor, optical modules as well as multichannel systems. The high speed transimpedance amplifier (TIA) of the device supports 10 ns pulse widths, allowing high spatial resolution for Time of Flight (To F) measurements. Additionally, the ADA4355 includes three TIA gain (TZ) settings to maximize dynamic range. An internal, selectable, analog low-pass filter (LPF) can limit the device bandwidth with a corner frequency of 100 MHz to minimize broadband noise while also serving as an antialiasing filter for the 125 MSPS ADC. For lower bandwidth signals, or wider signal pulses (for example, 20 µs or wider), the filter can be set to a corner frequency of 1.0 MHz to provide additional noise...