ADS7043

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

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Product details

Parameters

Resolution (Bits) 12 Number of input channels 1 Sample rate (Max) (kSPS) 1000 Interface type SPI Architecture SAR Input type Pseudo-Differential Multi-channel configuration Rating Catalog Reference mode Supply Input range (Max) (V) 3.6 Input range (Min) (V) 0 Features Small Size Operating temperature range (C) -40 to 125 Power consumption (Typ) (mW) 0.243 Analog voltage AVDD (Min) (V) 1.65 SNR (dB) 70 Analog voltage AVDD (Max) (V) 3.6 INL (Max) (+/-LSB) 1 Digital supply (Min) (V) 1.65 Digital supply (Max) (V) 3.6 open-in-new Find other Precision ADCs (<=10MSPS)

Package | Pins | Size

VSSOP (DCU) 8 6 mm² 2 x 3.1 X2QFN (RUG) 8 2 mm² 1.5 x 1.5 open-in-new Find other Precision ADCs (<=10MSPS)

Features

  • Industry’s First SAR ADC with Nanowatt Power Consumption:
    • 243 µW at 1 MSPS with 1.8-V AVDD
    • 780 µW at 1 MSPS with 3-V AVDD
    • 78 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
    • 70-dB SNR with 3-V AVDD
    • –80-dB THD with 3-V AVDD
  • Unipolar, Pseudo Differential Input Range: –AVDD / 2 to AVDD / 2
  • Integrated Offset Calibration
  • SPI™-Compatible Serial Interface: 16 MHz
  • JESD8-7A Compliant Digital I/O
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Description

The ADS7043 is a 1-MSPS, analog-to-digital converter (ADC). The device supports a wide analog input voltage range (±0.825 V to ±1.8 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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Type Title Date
* Data sheet ADS7043 Ultra-Low Power, Ultra-Small Size, 12-Bit, 1-MSPS, SAR ADC datasheet (Rev. D) Dec. 10, 2015
E-book Best of Baker's Best: Precision Data Converters -- SAR ADCs May 21, 2015
User guide User Guide for ADS7043EVM-PDK Nov. 19, 2014

Design & development

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

Hardware development

EVALUATION BOARD Download
document-generic User guide
25
Description

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 (...)

Features
  • Designed using the ADS7042 precision analog-to-digital converter, OPA316 precision ADC driver, and REF3330 precision voltage reference
  • Nanowatt power consumption of the ADS7042 ADC when sampling at 1 KSPS
  • ADC sampling rates betwen 1 KSPS and 1 MSPS
  • SMA jack for optional external analog signal input
  • (...)

Software development

SUPPORT SOFTWARE Download
SLAC673A.ZIP (171067 KB)

Design tools & simulation

SIMULATION MODEL Download
SBAM196.ZIP (26 KB) - IBIS Model
SIMULATION MODEL Download
SBAM244.TSC (228 KB) - TINA-TI Reference Design
SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
SIMULATION TOOL Download
SPICE-based analog simulation program
TINA-TI 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 (...)
document-generic User guide
CALCULATION TOOL Download
Analog-to-digital converter (ADC) input driver design tool supporting multiple input types
ADC-INPUT-CALC ADC-INPUT-CALC is an online tool that provides support for designing the input buffer to an analog-to-digital converter (ADC). It offers 24 different op-amp based buffer circuits that can be used to drive an ADC input. The available topologies cover differential, single-ended and transformer-coupled (...)
CALCULATION TOOL Download
Analog engineer's calculator
ANALOG-ENGINEER-CALC — 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 op-amp gain with feedback (...)
Features
  • Expedites circuit design with analog-to-digital converters (ADCs) and digital-to-analog converters (DACs)
    • Noise calculations
    • Common unit translation
  • Solves common amplifier circuit design problems
    • Gain selections using standard resistors
    • Filter configurations
    • Total noise for common amplifier configurations
  • (...)

CAD/CAE symbols

Package Pins Download
VSSOP (DCU) 8 View options
X2QFN (RUG) 8 View options

Ordering & quality

Information included:
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  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

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