AD7944
Info: : PRODUCTION
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AD7944

14-Bit, 2.5 MSPS, PulSAR 15.5 mW ADC in LFCSP

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 2
1ku List Price Starting From $12.11
Features
  • 14-bit resolution with no missing codes
  • Throughput: 2.5 MSPS (TURBO high), 2.0 MSPS (TURBO low)
  • Low power dissipation
    15.5 mW at 2.5 MSPS, with external reference 
    28 mW at 2.5 MSPS, with internal reference
  • SNR
    84 dB, with on-chip reference 
    84.5 dB, with external reference
  • 4.096 V internal reference: typical drift of
    ±10 ppm/°C
  • INL: ±0.25 LSB typical, ±1.0 LSB maximum
  • Pseudo differential analog input voltage range
    0 V to VREF with VREF up to 5.0 V Allows use of any input range
  • No pipeline delay
  • Logic interface: 1.8 V/2.5 V/2.7 V
  • Serial interface: SPI-/QSPI-/MICROWIRE-/DSP-compatible
  • Ability to daisy-chain multiple ADCs with busy indicator
  • 20-lead, 4 mm × 4 mm LFCSP (QFN)
Additional Details
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The AD7944 is a 14-bit, 2.5 MSPS successive approximation analog-to-digital converter (SAR ADC). It contains a low power, high speed, 14-bit sampling ADC, an internal conversion clock, an internal reference (and buffer), error correction circuits, and a versatile serial interface port. On the rising edge of CNV, the AD7944 samples an analog input, IN+, between 0 V and VREF with respect to a ground sense, IN−. The AD7944 features a very high sampling rate turbo mode (TURBO high) and a reduced power normal mode (TURBO low) for low power applications where the power is scaled with the throughput.

In normal mode (TURBO low), the SPI-compatible serial interface also features the ability, using the SDI input, to daisy-chain several ADCs on a single 3-wire bus and provide an optional busy indicator. The serial interface is compatible with 1.8 V, 2.5 V, and 2.7 V supplies using the separate VIO supply.

The AD7944 is available in a 20-lead LFCSP with operation specified from −40°C to +85°C.

APPLICATIONS

  • Battery-powered equipment
  • Communications
  • ATE
  • Data acquisition systems
  • Medical instruments
Part Models 2
1ku List Price Starting From $12.11

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
AD7944BCPZ
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AD7944BCPZ-RL7
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Product Lifecycle

PCN

Jul 25, 2017

- 17_0068

CANCELLED: Addition of ASE Korea as an Alternate Assembly Site for Select 3x3mm and 4x4mm Body Sizes LFCSP Devices

May 5, 2014

- 14_0020

Conversion of 4x4mm body Size LFCSP Package Outlines from Punch to Sawn and Transfer of Assembly Site to Amkor Philippines.

Filter by Model

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Reset Filters

Part Models

Product Lifecycle

PCN

Jul 25, 2017

- 17_0068

arrow down

CANCELLED: Addition of ASE Korea as an Alternate Assembly Site for Select 3x3mm and 4x4mm Body Sizes LFCSP Devices

May 5, 2014

- 14_0020

arrow down

Conversion of 4x4mm body Size LFCSP Package Outlines from Punch to Sawn and Transfer of Assembly Site to Amkor Philippines.

Software & Part Ecosystem

Software & Part Ecosystem

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Evaluation Kit

Evaluation Kits 1

EVAL-AD7944

AD7944 Evaluation Board

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EVAL-AD7944

AD7944 Evaluation Board

AD7944 Evaluation Board

Product Detail

The EVAL-AD7944FMCZ is a fully featured evaluation Kit for the AD7944. This board operates in conjunction with the System Development Platform board, EVAL-SDP-CH1Z. When operated with the System Development Platform board, software is provided enabling the user to perform detailed analysis of the ADC's performance. This software has an accompanying user guide describing the operation and set up of the evaluation board when operated with the System Development Platform board.

Tools & Simulations

Tools & Simulations 2

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