DDC1128

AKTIV

Analog-Digital-Wandler, 128 Kanäle, mit Stromeingang

Produktdetails

Number of input channels 128 Resolution (Bits) 20 Features Computed Tomography (CT) Operating temperature range (°C) 0 to 70 Interface type Serial Rating Catalog
Number of input channels 128 Resolution (Bits) 20 Features Computed Tomography (CT) Operating temperature range (°C) 0 to 70 Interface type Serial Rating Catalog
NFBGA (ZKL) 192 81 mm² 9 x 9
  • Single-Chip Solution to Directly Measure
    128 Low-Level Currents
  • Proven High-Precision, True Integrating
    Architecture with 100% Charge Collection
  • Easy Upgrade for Existing DDC Family
    Applications
  • Low Power: 3 mW/channel at 3 kSPS
  • Extremely Linear:
    INL = ±0.025% of Reading ±1 ppm of FSR
  • Low Noise: 6.3 ppm of FSR
  • Adjustable Full-Scale Range
  • Adjustable Speed
    • Data Rates up to 6 kSPS with 20-bit
      Performance
    • Integration Times as low as 160 µs
  • Daisy-Chainable Serial Interface
  • In-Package Bypass Capacitors Simplify PCB
    Design Area and Design Complexity
  • Single-Chip Solution to Directly Measure
    128 Low-Level Currents
  • Proven High-Precision, True Integrating
    Architecture with 100% Charge Collection
  • Easy Upgrade for Existing DDC Family
    Applications
  • Low Power: 3 mW/channel at 3 kSPS
  • Extremely Linear:
    INL = ±0.025% of Reading ±1 ppm of FSR
  • Low Noise: 6.3 ppm of FSR
  • Adjustable Full-Scale Range
  • Adjustable Speed
    • Data Rates up to 6 kSPS with 20-bit
      Performance
    • Integration Times as low as 160 µs
  • Daisy-Chainable Serial Interface
  • In-Package Bypass Capacitors Simplify PCB
    Design Area and Design Complexity

The DDC1128 is a 20-bit, 128-channel, current-input analog-to-digital (A/D) converter. It combines both current-to-voltage and A/D conversion so that 128 separate low-level current output devices, such as photodiodes, can be directly connected to its inputs and digitized.

For each of the 128 inputs, the DDC1128 uses the proven dual switched integrator front-end. This configuration allows for continuous current integration: while one integrator is being digitized by the onboard A/D converter, the other is integrating the input current. This architecture provides both a stable offset and a loss-less collection of the input current. Adjustable integration times range from 160µs to 1s, allowing currents from fAs to µAs to be continuously measured with outstanding precision.

The DDC1128 has a serial interface designed for daisy-chaining in multi-device systems. Simply connect the output of one device to the input of the next to create the chain. Common clocking feeds all the devices in the chain so that the digital overhead in a multi-DDC1128 system is minimal.

The DDC1128 operates from a +5 V analog supply and a 2.7 V to 3.6 V digital supply, it is specified from 0°C to 70°C operating temperature and it is available in a 9 × 9 mm2 192-ball BGA, which includes on board bypass capacitors to help minimize the external component requirements and further reduce board space.

To request a full data sheet or other design resources: request DDC1128

The DDC1128 is a 20-bit, 128-channel, current-input analog-to-digital (A/D) converter. It combines both current-to-voltage and A/D conversion so that 128 separate low-level current output devices, such as photodiodes, can be directly connected to its inputs and digitized.

For each of the 128 inputs, the DDC1128 uses the proven dual switched integrator front-end. This configuration allows for continuous current integration: while one integrator is being digitized by the onboard A/D converter, the other is integrating the input current. This architecture provides both a stable offset and a loss-less collection of the input current. Adjustable integration times range from 160µs to 1s, allowing currents from fAs to µAs to be continuously measured with outstanding precision.

The DDC1128 has a serial interface designed for daisy-chaining in multi-device systems. Simply connect the output of one device to the input of the next to create the chain. Common clocking feeds all the devices in the chain so that the digital overhead in a multi-DDC1128 system is minimal.

The DDC1128 operates from a +5 V analog supply and a 2.7 V to 3.6 V digital supply, it is specified from 0°C to 70°C operating temperature and it is available in a 9 × 9 mm2 192-ball BGA, which includes on board bypass capacitors to help minimize the external component requirements and further reduce board space.

To request a full data sheet or other design resources: request DDC1128

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Technische Dokumentation

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Typ Titel Datum
* Data sheet DDC1128 128-Channel, Current-Input Analog-to-Digital Converter datasheet (Rev. A) PDF | HTML 27 Mai 2016
Analog Design Journal Selecting a multichannel ultra-low-current measurement IC PDF | HTML 18 Mär 2022
EVM User's guide DDC1128 EVM Intro User's Guide 19 Mär 2014

Design und Entwicklung

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Evaluierungsplatine

DDC1128EVM — DDC1128 Evaluierungsmodul für 128-Kanal-Analog-Digital-Wandler mit Stromeingang

The DDC1128EVM evaluation module  (EVM)  is  an  evaluation  kit  for  evaluating  the DDC1128,  a  128-channel,  current  input,  20-bit analog-to-digital (A/D) converter. The EVM consists of two DDC1128 devices, a USB device for interfacing to a PC, an FPGA for device (...)

Benutzerhandbuch: PDF
Simulationsmodell

DDC1128 IBIS Model

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Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
NFBGA (ZKL) 192 Ultra Librarian

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