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The ADS7142IRUGR is a stand-alone femtopower sensor monitor in a small form factor that is ideal for use in cost-sensitive designs. The device features efficient host sleep and wake-up, and consumes 900nW when autonomously monitoring signals.The ADS7142 can implement event-induced interrupts based on the channel using a digital window comparator with programmable high- and low-thresholds, hysteresis, and event counters. The sensor monitor includes a dual-channel analogue multiplexer in front of a successive approximation register analogue-to-digital converter (SAR ADC), followed by an internal data buffer for converting and capturing sensor data in a one-time mode. In-depth data analysis is enabled by a high-precision mode for 16-bit accuracy, a data buffer for troubleshooting, and a one-time mode for fast data capture.

The ADS7142IRUGR has a wide operating voltage range of 1.65V to 3.6V and is available in a 10-pin QFN package. The device's compact size and low power consumption make it ideal for space-constrained and/or battery-powered applications.

Features

- Stand-alone nanowatt power sensor monitor for cost-sensitive designs

- Small package size: 1.5mm × 2mm

- Efficient host sleep and wake-up

- Autonomous monitoring power consumption of 900nW

- Window comparator for event-triggered host wake-ups

- 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

- Error trigger protection

- Programmable thresholds per channel

- Programmable hysteresis for noise immunity

- Event counter for transient suppression

- In-depth data analysis

- Data buffer for fault diagnosis

- High-precision mode for 16-bit accuracy

- One-time mode for fast data capture

- I2C™ interface

- Compatible with 1.65V to 3.6V voltage range

- 8 configurable addresses

- Up to 3.4MHz (high speed)

- Wide operating frequency range:

- Analogue supply: 1.65V to 3.6V

- Temperature range: -40°C to 125°C

Applications

- Sensor nodes for the Internet of Things (IoT)

- Gas, heat, PIR motion and smoke detectors

- Preventive maintenance for lifts, escalators, HVAC, industrial equipment, etc.

- Wearable electronics

- Zero crossing detection for fault indicators

- Monitoring Functions

- Comparators with programmable reference voltage

- Sensors for deep learning artificial intelligence

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