Automotive 2-channel 12-bit 140-kSPS I2C-compatible ADC with programmable threshold and host wake-up
Product details
Parameters
Package | Pins | Size
Features
- AEC-Q100 qualified for automotive applications:
- Device temperature grade 1:
–40°C to 125°C, TA
- Device temperature grade 1:
- 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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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.
Technical documentation
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View all 4 | 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
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
BOOSTXL-ADS7142-Q1
Description
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 (...)
Features
- 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 — 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
- (...)
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 (...)
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-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 |
|---|---|---|
| WSON (DQC) | 10 | View options |
Ordering & quality
Information included:
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
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Support & training
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