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ADS7044

ACTIVE

Ultra-Low-Power Ultra-Small-Size SAR ADC | 12 Bit | 1MSPS | Fully Differential

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Data sheet

ADS7044

ACTIVE
Data sheet Order now

Product details

Resolution (Bits) 12 Sample rate (max) (ksps) 1000 Number of input channels 1 Interface type SPI Architecture SAR Input type Differential Rating Catalog Reference mode Supply Input voltage range (max) (V) 3.6 Input voltage range (min) (V) 0 Features Small Size Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 0.261 Analog supply (min) (V) 1.65 Analog supply voltage (max) (V) 3.6 SNR (dB) 71 Digital supply (min) (V) 1.65 Digital supply (max) (V) 3.6
Resolution (Bits) 12 Sample rate (max) (ksps) 1000 Number of input channels 1 Interface type SPI Architecture SAR Input type Differential Rating Catalog Reference mode Supply Input voltage range (max) (V) 3.6 Input voltage range (min) (V) 0 Features Small Size Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 0.261 Analog supply (min) (V) 1.65 Analog supply voltage (max) (V) 3.6 SNR (dB) 71 Digital supply (min) (V) 1.65 Digital supply (max) (V) 3.6
VSSOP (DCU) 8 6.2 mm² 2 x 3.1 X2QFN (RUG) 8 2.25 mm² 1.5 x 1.5
  • Industry’s First SAR ADC with Nanowatt Power Consumption:
    • 261 µW at 1 MSPS with 1.8-V AVDD
    • 900 µW at 1 MSPS with 3-V AVDD
    • 90 µW at 100 kSPS with 3-V AVDD
    • Less than 1 µW at 1 kSPS with 3-V AVDD
  • Industry’s Smallest SAR ADC:
    • X2QFN-8 Package with 2.25-mm2 Footprint
  • 1-MSPS Throughput with Zero Data Latency
  • Wide Operating Range:
    • AVDD: 1.65 V to 3.6 V
    • DVDD: 1.65 V to 3.6 V (Independent of AVDD)
    • Temperature Range: –40°C to 125°C
  • Excellent Performance:
    • 12-Bit Resolution with NMC
    • ±1-LSB (Max) DNL and INL
    • 71-dB SNR with 3-V AVDD
    • –85-dB THD with 3-V AVDD
  • Unipolar, Differential Input Range: –AVDD to AVDD
  • Integrated Offset Calibration
  • SPI™-Compatible Serial Interface: 16 MHz
  • JESD8-7A Compliant Digital I/O
  • Industry’s First SAR ADC with Nanowatt Power Consumption:
    • 261 µW at 1 MSPS with 1.8-V AVDD
    • 900 µW at 1 MSPS with 3-V AVDD
    • 90 µW at 100 kSPS with 3-V AVDD
    • Less than 1 µW at 1 kSPS with 3-V AVDD
  • Industry’s Smallest SAR ADC:
    • X2QFN-8 Package with 2.25-mm2 Footprint
  • 1-MSPS Throughput with Zero Data Latency
  • Wide Operating Range:
    • AVDD: 1.65 V to 3.6 V
    • DVDD: 1.65 V to 3.6 V (Independent of AVDD)
    • Temperature Range: –40°C to 125°C
  • Excellent Performance:
    • 12-Bit Resolution with NMC
    • ±1-LSB (Max) DNL and INL
    • 71-dB SNR with 3-V AVDD
    • –85-dB THD with 3-V AVDD
  • Unipolar, Differential Input Range: –AVDD to AVDD
  • Integrated Offset Calibration
  • SPI™-Compatible Serial Interface: 16 MHz
  • JESD8-7A Compliant Digital I/O

The ADS7044 is a 1-MSPS, analog-to-digital converter (ADC). The device supports a wide analog input voltage range (±1.65 V to ±3.6 V) and includes a capacitor-based, successive-approximation register (SAR) ADC with an inherent sample-and-hold circuit. The SPI-compatible serial interface is controlled by the CS and SCLK signals. The input signal is sampled with the CS falling edge and SCLK is used for conversion and serial data output. The device supports a wide digital supply range (1.65 V to 3.6 V), enabling direct interface to a variety of host controllers. The device complies with the JESD8-7A standard for normal DVDD range (1.65 V to 1.95 V).

The device is available in 8-pin, miniature, leaded, and X2QFN packages and is specified for operation from –40°C to 125°C. Miniature form-factor and extremely low-power consumption make this device suitable for space-constrained, battery-powered applications.

The ADS7044 is a 1-MSPS, analog-to-digital converter (ADC). The device supports a wide analog input voltage range (±1.65 V to ±3.6 V) and includes a capacitor-based, successive-approximation register (SAR) ADC with an inherent sample-and-hold circuit. The SPI-compatible serial interface is controlled by the CS and SCLK signals. The input signal is sampled with the CS falling edge and SCLK is used for conversion and serial data output. The device supports a wide digital supply range (1.65 V to 3.6 V), enabling direct interface to a variety of host controllers. The device complies with the JESD8-7A standard for normal DVDD range (1.65 V to 1.95 V).

The device is available in 8-pin, miniature, leaded, and X2QFN packages and is specified for operation from –40°C to 125°C. Miniature form-factor and extremely low-power consumption make this device suitable for space-constrained, battery-powered applications.
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Technical documentation

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* Data sheet ADS7044 Ultra-Low Power, Ultra-Small Size, 12-Bit, 1-MSPS, SAR ADC datasheet (Rev. D) PDF | HTML 10 Dec 2015
More literature Precision ADCs for Motor Encoders and Position Sensing PDF | HTML 27 Mar 2023
User guide ADS7042EVM-PDK, ADS7049-Q1EVM-PDK, and ADS7057EVM-PDK Evaluation Module (Rev. A) PDF | HTML 13 Jan 2022
Circuit design Single-ended to diff. signal conversion using an op amp & FDA for unipolar signa (Rev. A) 08 Mar 2019
Circuit design Single-ended-to-differential circuit using an op amp and FDA for bipolar signals (Rev. A) 08 Mar 2019
E-book Best of Baker's Best: Precision Data Converters -- SAR ADCs 21 May 2015

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

ADS7042EVM-PDK — ADS7042 Ultra-Low-Power Ultra-Small-Size 12-Bit 1MSPS SAR ADC Performance Demonstration Kit (PDK)

The ADS7042 evaluation module (EVM) performance demonstration kit (PDK) is a platform for evaluating the 12-bit, ADS7042 successive approximation register (SAR) analog-to-digital converter (ADC).

The PDK includes the ADS7042 evaluation board, precision host interface (PHI) controller board, and (...)

User guide: PDF | HTML
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Evaluation board

BOOST-ADS7042 — ADS7042 Ultra-Low Power Data Acquisition BoosterPack

The ADS7042 Ultra-Low Power Data Acquisition BoosterPack is a stand-alone system that converts analog sensor data into digital SPI data using the TI ADS7042 Successive Approximation Register Analog-to-Digital Converter.  This BoosterPack has been designed to be compatible with the TI (...)

User guide: PDF
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Simulation model

ADS7042 IBIS Model

SBAM196.ZIP (26 KB) - IBIS Model
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Simulation model

ADS7044 TINA-TI Reference Design

SBAM245.TSC (1518 KB) - TINA-TI Reference Design
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Calculation tool

ANALOG-ENGINEER-CALC — Analog engineer's calculator

The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)
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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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Simulation tool

TINA-TI — SPICE-based analog simulation program

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
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Package Pins Download
VSSOP (DCU) 8 View options
X2QFN (RUG) 8 View options
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