1 Features
1• 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

2 Applications
• Sensor Nodes for Internet of Things (IoT)
• Gas, Heat, PIR Motion and Smoke Detectors
• Preventive Maintenance for Elevators, Escalators,
HVAC, Industrial Equipment, and so forth
• Wearable Electronics
• Zero Cross Detection for Fault Indicators
• Supervisory Functions
• Comparator with Programmable Reference
• Sensors for Deep Learning Artificial Intelligence

3 Description
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 dualchannel
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 batterypowered
applications.