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Analog Devices Inc. ADA4356 Current-to-Bits Receiver µModule

Analog Devices Inc. ADA4356 Current-to-Bits Receiver µModule is a low-noise, wide dynamic-range, current input, analog-to-digital converter (ADC) µModule. For space savings in size-conscious applications, the ADA4356 includes all the required active and passive components to realize a complete current-to-bits data-acquisition solution with programmable gain and filter characteristics. The high-speed transimpedance amplifier (TIA) front-end amplifier in the ADA4356 supports 20ns pulse widths, which allows high spatial resolution for Time of Flight (ToF) measurements, and exhibits fast overdrive recovery from large input signals. The ADA4356 includes three selectable TIA feedback resistor values for programmable TIA gain.

An internal analog low-pass filter offers either 100MHz or 1MHz cutoff frequencies to reduce broadband noise and serve as an anti-aliasing filter for the ADC inputs. For lower bandwidth signals, the 1MHz filter configuration offers additional noise reduction.

Following the TIA and filter blocks, a 14-bit pipeline ADC converts the analog signal at 125MSPS and outputs the digitized signals through two serial, low-voltage, differential signaling (LVDS) data lanes operating at rates up to 1GBPS per lane. The data clock output (DCO) operates at frequencies of up to 500MHz and supports double data rate (DDR) operation.

Features

  • High-performance, current-input, data-acquisition µModule
    • Programmable-gain transimpedance amplifier (PGTIA)
    • Fully differential amplifier (FDA)
    • Programmable analog low-pass filter (LPF)
    • 14-bit 125MSPS analog-to-digital converter (ADC)
    • 3x selectable gains
    • Integrated 1.8V LDO for the ADC
  • Small 12.00mm x 6.00mm BGA form factor
  • Operation from a single 3.3V supply
  • PGTIA selectable gains, single 20ns pulse sensitivity
    • TZ = 133kΩ, 250nA to 10µA
    • TZ = 11kΩ, 1µA to 100µA
    • TZ = 4.54kΩ, 10µA to 300µA
  • Fast input overload recovery
  • Optional external current divider circuit enables current detection up to 60mA
  • Analog filter for noise reduction and anti-alias filtering, selectable 1.0MHz and 100MHz LPF bandwidth
  • Low 3.5nA RMS input-referred current noise, TZ = 133kΩ, 1MHz analog filter
  • 14-bit ADC with sample rate up to 125MSPS
    • Serial LVDS data output
    • Serial peripheral interface (SPI) controls
  • 546mW quiescent power, LDO enabled
  • -40°C to +85°C temperature range
  • Moisture Sensitivity Level (MSL) 3

Applications

  • ToF
  • Current-to-bits conversion
  • Range finders
  • Fiber optic sensing
  • Optical time domain reflectometry (OTDR)

Simplified Block Diagram

Block Diagram - Analog Devices Inc. ADA4356 Current-to-Bits Receiver µModule

Simplified Application Diagram

Application Circuit Diagram - Analog Devices Inc. ADA4356 Current-to-Bits Receiver µModule
Publicerad: 2025-12-01 | Uppdaterad: 2025-12-18