Firmware
ADS7142
12-bit 140-kSPS 2-ch nanopower SAR ADC with 1.8-V operation in 1.5-mm x 2-mm QFN package
Data sheet
ADS7142
- Standalone, Nanopower Sensor Monitor for
Cost-sensitive Designs - Small Package Size: 1.5 mm x 2 mm
- Efficient Host Sleep and Wake-up
- Autonomous Monitoring at 900 nW
- Windowed Comparator for Event-triggered Host Wake-up
- Data Buffering during Host Sleep
- Independent Sensor 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
- Deep Data Analysis
- Data Buffer for Fault Diagnostics
- High Precision Mode for 16-bit Accuracy
- One-Shot Mode for Fast Data Capture
- I2C™ Interface
- Compatible from 1.65 V to 3.6 V
- 8 Configurable Addresses
- Up to 3.4 MHz (High Speed)
- Wide Operating Range
- Analog Supply: 1.65 V to 3.6 V
- Temperature Range: –40°C to 125°C
The ADS7142 autonomously monitors signals while optimizing system power, reliability, and performance. It implements event-triggered interrupts per channel using a digital windowed comparator with programmable high and low thresholds, hysteresis, and event counter. The device includes a dual-channel analog multiplexer in front of a successive approximation register analog-to-digital converter (SAR ADC) followed by an internal data buffer for converting and capturing data from sensors.
The ADS7142 is available in 10-pin QFN package and consumes only 900 nW of power. The small form-factor and low power consumption make this device suitable for space-constrained and/or battery-powered applications.
Technical documentation
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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, (...)
GUI for evaluation module (EVM)
SBAC172 — ADS7142 EVM GUI
Supported products & hardware
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
Support software
SBAC245 — Source Files for SBAA353
Supported products & hardware
Simulation model
ADS7142 TINA-TI Input Model (Rev. B)
SBAM349B.TSC (3089 KB) - TINA-TI Reference Design
Calculation tool
ANALOG-ENGINEER-CALC — PC software 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 (...)
Supported products & hardware
Design tool
ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.
The ADC-TO-VREF-SELECT tool enables the pairing of TI analog-to-digital converters (ADCs) and series voltage references. Users can select an ADC device and the desired reference voltage, and the tool will list up to two voltage reference recommendations.
Supported products & hardware
Design tool
SBAC226 — Source files for SBAA317
Supported products & hardware
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 (...)
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
Reference designs
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Reference designs
TIDA-010019 — RTD replacement for cold junction compensation reference design in a temperature sensor
Temperature-sensing applications that use a thermocouple (TC) require an accurate local temperature sensor to achieve high accuracy. Solutions for design challenges such as cold-junction compensation (CJC) or including an ultra-low power TC analog front-end are highlighted and addressed in this (...)
Reference designs
TIDA-01569 — 4 Channel Antenna LDO Reference Design with Digital Diagnostics and Integrated Protection
This automotive reference design demonstrates an approach for powering remote, off-board loads, often over coaxial cables (i.e. "phantom power"). This design is capable of protecting against and digitally diagnosing different faults that off-board cabling is susceptible to. Reverse polarity, (...)
Reference designs
TIDA-01596 — Smart Thermostat Localized Heat Compensation for Ambient Temperature Sensing Reference Design
Localized thermostat heat generation is a leading cause for incorrect ambient temperature sensing near the return air plenum. This ultimately leads to overshoot in the HVAC cycle, resulting in costly energy bills. This reference design addresses this common problem associated with thermostat (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| X2QFN (RUG) | 10 | Ultra Librarian |
Ordering & quality
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