Automotive 2-channel 12-bit 140-kSPS I2C-compatible ADC with programmable threshold and host wake-up


Product details


Resolution (Bits) 12 Number of input channels 2 Sample rate (Max) (kSPS) 140 Interface type I2C Architecture SAR Input type Pseudo-Differential, Single-Ended Multi-channel configuration Multiplexed Rating Automotive TI functional safety category Functional Safety-Capable Reference mode Supply Input range (Max) (V) 3.6 Input range (Min) (V) 0 Features Comparator, Oscillator, Small Size Operating temperature range (C) -40 to 125 Power consumption (Typ) (mW) 0.0009 Analog voltage AVDD (Min) (V) 1.65 SNR (dB) 71.5 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

WSON (DQC) 10 6 mm² 3 x 2 open-in-new Find other Precision ADCs (<=10MSPS)


  • AEC-Q100 qualified for automotive applications:
    • Device temperature grade 1:
      –40°C to 125°C, TA
  • Small package size: 3 mm × 2 mm
  • 12-bit noise-free resolution
  • Up to 140-kSPS sampling rate
  • Efficient host sleep and wake-up:
    • Autonomous monitoring at 900 nW
    • Windowed comparator for event-triggered host wake-up
  • Independent configuration and calibration:
    • Dual-channel, pseudo-differential, or ground-sense input configuration
    • Programmable thresholds for calibration
    • Internal calibration improves offset and drift
  • False trigger prevention:
    • Programmable thresholds per channel
    • Programmable hysteresis for noise immunity
    • Event counter for transient rejection
  • I2C interface:
    • Compatible from 1.65 V to 3.6 V
    • 8 configurable addresses
    • Up to 3.4 MHz (high speed)
  • Analog supply: 1.65 V to 3.6 V

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The ADS7142-Q1 is 12-bit, 140-kSPS successive-approximation register (SAR) analog-to-digital converter (ADC) that can autonomously monitor signals while maximizing system power, reliability, and performance. The device implements event-triggered interrupts per channel using a digital window comparator with programmable high and low thresholds, hysteresis, and event counter. The device includes a dual-channel analog multiplexer in front of a SAR ADC followed by an internal data buffer for converting and capturing data from sensors.

The ADS7142-Q1 is available in a 10-pin WSON package and can achieve low power consumption of only 900 nW. The small form-factor and low-power consumption make this device suitable for space-constrained applications.

open-in-new Find other Precision ADCs (<=10MSPS)

Technical documentation

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Type Title Date
* Data sheet ADS7142-Q1 Automotive, 2-Channel, 12-Bit, 140-kSPS, I2C-Compatible ADC With Programmable Threshold and Host Wake-Up Features datasheet (Rev. A) Oct. 01, 2019
Functional safety information ADS7142-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA Oct. 06, 2020
Technical article How an automotive ADC can help designers achieve functional safety in ADAS Jun. 09, 2020
User guide BOOSTXL-ADS7142-Q1 BoosterPack™ Plug-In Module (Rev. A) Aug. 19, 2019

Design & development

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Hardware development

document-generic User guide

BOOSTXL-ADS7142-Q1 is a platform for evaluating the performance of the ADS7142-Q1 successive approximation register (SAR) analog-to-digital converter (ADC), which is a nanopower, dual-channel, sensor monitor device. The evaluation kit includes the ADS7142-Q1 BoosterPack™ plug-in module (...)

  • Hardware and software required for diagnostic testing, as well as accurate performance evaluation of ADS7142-Q1 SAR ADC
  • USB powered; no external power supply required
  • Pairs with MSP-EXP432E401Y LaunchPad™ development kit (sold separately), which provides a convenient communication (...)

Design tools & simulation

SBAM333.ZIP (45 KB) - IBIS Model
SBAM380.ZIP (12 KB) - TINA-TI Spice Model
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 (...)
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  • Dynamic updates ensure you have access to most current device models
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  • Supports simultaneous analysis of multiple products
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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
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 (...)
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 (...)
  • 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
  • (...)

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