ADS7142-Q1 Automotive 2-channel 12-bit 140-kSPS I2C-compatible ADC with programmable threshold and host wake-up | TI.com

ADS7142-Q1
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Automotive 2-channel 12-bit 140-kSPS I2C-compatible ADC with programmable threshold and host wake-up

 

Description

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.

Features

  • 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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Parametrics

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Part number Order Resolution (Bits) Sample rate (Max) (kSPS) Number of input channels Interface Operating temperature range (C) Package Group Approx. price (US$) Power consumption (Typ) (mW) Package size: mm2:W x L (PKG) Architecture Input type Multi-channel configuration Reference mode Features Input range (Max) (V) Input range (Min) (V) Analog voltage AVDD (Min) (V) Analog voltage AVDD (Max) (V) Digital supply (Min) (V) Digital supply (Max) (V) INL (Max) (+/-LSB) SNR (dB) THD (Typ) (dB) Rating
ADS7142-Q1 Order now 12     140     2     I2C     -40 to 125     WSON | 10     1.00 | 1ku     0.0009     10WSON: 6 mm2: 3 x 2 (WSON | 10)     SAR     Pseudo-Differential
Single-Ended    
Multiplexed     Supply     Comparator
Oscillator
Small Size    
3.6     0     1.65     3.6     1.65     3.6     1     71.5     -80     Automotive