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ADS7142-Q1

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

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Data sheet

ADS7142-Q1

ACTIVE
Data sheet Order now

Product details

Resolution (Bits) 12 Sample rate (max) (ksps) 140 Number of input channels 2 Interface type I2C Architecture SAR Input type Pseudo-Differential, Single-ended Multichannel configuration Multiplexed Rating Automotive TI functional safety category Functional Safety-Capable Reference mode Supply Input voltage range (max) (V) 3.6 Input voltage range (min) (V) 0 Features Comparator, Oscillator, Small Size Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 0.0009 Analog supply (min) (V) 1.65 Analog supply (max) (V) 3.6 SNR (dB) 71.5 Digital supply (min) (V) 1.65 Digital supply (max) (V) 3.6
Resolution (Bits) 12 Sample rate (max) (ksps) 140 Number of input channels 2 Interface type I2C Architecture SAR Input type Pseudo-Differential, Single-ended Multichannel configuration Multiplexed Rating Automotive TI functional safety category Functional Safety-Capable Reference mode Supply Input voltage range (max) (V) 3.6 Input voltage range (min) (V) 0 Features Comparator, Oscillator, Small Size Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 0.0009 Analog supply (min) (V) 1.65 Analog supply (max) (V) 3.6 SNR (dB) 71.5 Digital supply (min) (V) 1.65 Digital supply (max) (V) 3.6
WSON (DQC) 10 6 mm² 3 x 2
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • 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
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • 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

The ADS7142-Q1 is a 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 designed for space-constrained applications.

The ADS7142-Q1 is a 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 designed for space-constrained applications.
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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. B) PDF | HTML 16 Sep 2022
User guide BOOSTXL-ADS7142-Q1 BoosterPack™ Plug-In Module (Rev. B) PDF | HTML 09 Jun 2021
Functional safety information ADS7142-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA 06 Oct 2020
Technical article How an automotive ADC can help designers achieve functional safety in ADAS 09 Jun 2020
Technical article Leverage coherent sampling and FFT windows when evaluating SAR ADCs (Part 1) 13 Mar 2015

Design & development

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

Evaluation board

BOOSTXL-ADS7142-Q1 — ADS7142-Q1 2-channel 12-bit 140-kSPS I2C-compatible ADC BoosterPack™ plug-in module

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, (...)

User guide: PDF | HTML
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Plug-in

SIMPLELINK-SDK-SENSOR-ACTUATOR-PLUGIN — Sensor and Actuator Plug-in for SimpleLink™ MCU SDKs

The Sensor and Actuator Plugin for SimpleLink™ MCU SDKs provides support for a variety of related components including optical and temperature and humidity sensors, allowing customers to easily add new features to their SimpleLink MCU-based design. API user guides are provided for each (...)

Supported products & hardware

Supported products & hardware

Products
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Ultrasonic sensor AFEs
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Wi-Fi products
CC3220MODA — SimpleLink™ 32-bit Arm Cortex-M4 Wi-Fi CERTIFIED™ wireless module with antenna CC3220R — SimpleLink™ 32-bit Arm Cortex-M4 Wi-Fi® wireless MCU with 6 TLS/SSL and 256kB RAM CC3220S — SimpleLink™ 32-bit Arm Cortex-M4 Wi-Fi® wireless MCU with secure boot and 256kB RAM CC3220SF — SimpleLink™ 32-bit Arm Cortex-M4 Wi-Fi® wireless MCU with 1MB Flash and 256kB RAM
Linear Hall-effect sensors
DRV5055 — Ratiometric linear hall effect sensor with analog output
Ambient light sensors
OPT3001 — Digital ambient light sensor (ALS) with high-precision human-eye response
Humidity sensors
HDC2010 — 2% RH ultra-small, low-power digital relative humidity sensor HDC2080 — 2% RH ultra-low-power digital relative humidity sensor, interrupt/DRDY
Precision ADCs (<=10MSPS)
ADS7142-Q1 — Automotive 2-channel 12-bit 140-kSPS I2C-compatible ADC with programmable threshold and host wake-up
Hardware development
BOOSTXL-ADS7142-Q1 — ADS7142-Q1 2-channel 12-bit 140-kSPS I2C-compatible ADC BoosterPack™ plug-in module BOOSTXL-BASSENSORS — Sensors BoosterPack plug-in module for building automation BOOSTXL-PGA460 — PGA460-Q1 ultrasonic sensor signal conditioning evaluation module with transducers BOOSTXL-SENSORS — Sensors BoosterPack Plug-In Module BOOSTXL-ULN2003 — Dual Stepper Motor Driver BoosterPack featuring ULN2003 and CSD17571Q2 NexFET™ CC3220S-LAUNCHXL — CC3220S LaunchPad™ development kit for Wi-Fi® SimpleLink™ wireless MCU CC3220SF-LAUNCHXL — CC3220SF LaunchPad™ development kit for Wi-Fi® SimpleLink™ wireless MCU LAUNCHXL-CC1310 — CC1310 LaunchPad™ development kit for sub-1-GHz SimpleLink™ wireless MCU LAUNCHXL-CC1352R1 — CC1352R LaunchPad™ development kit for SimpleLink™ multi-band wireless MCU LAUNCHXL-CC2640R2 — CC2640R2 LaunchPad™ development kit for SimpleLink™ Bluetooth® Low Energy wireless MCU LAUNCHXL-CC26X2R1 — CC26x2R LaunchPad™ development kit for multi-standard SimpleLink™ wireless MCU MSP-EXP432E401Y — MSP432E401Y LaunchPad™ development kit for Ethernet SimpleLink™ MCU
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Simulation model

ADS7142 IBIS Model

SBAM333.ZIP (45 KB) - IBIS Model
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Simulation model

ADS7142 TINA-TI Transient Spice Model

SBAM380.ZIP (12 KB) - TINA-TI Spice Model
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Calculation tool

ADC-INPUT-CALC — Analog-to-digital converter (ADC) input driver design tool supporting multiple input types

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 (...)
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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 (...)
User guide: PDF
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Package Pins Download
WSON (DQC) 10 View options

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