Overview
The Texas Instruments ADS7142IRUGR is a nanopower, dual-channel, programmable sensor monitor designed for high efficiency and low power consumption. This 12-bit successive approximation register (SAR) analog-to-digital converter (ADC) operates at 140 kSPS and is housed in a compact 10-pin QFN package measuring 1.5 mm x 2 mm. The device is optimized for system power, reliability, and performance, making it ideal for space-constrained and battery-powered applications. It features autonomous signal monitoring with event-triggered interrupts, a digital windowed comparator, and an internal data buffer for efficient data conversion and capture from sensors.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 12 Bits | |
| Sampling Rate | Up to 140 kSPS | |
| Analog Supply Voltage (AVDD) | 1.65 to 3.6 V | V |
| Digital I/O Supply Voltage (DVDD) | 1.65 to 3.6 V | V |
| Power Consumption | 900 nW (typical) | nW |
| Package Type | 10-pin QFN | |
| Package Size | 1.5 mm x 2 mm | mm |
| Operating Temperature Range | -40°C to 125°C | °C |
| Conversion Time | 1.8 µs (typical) | µs |
| Acquisition Time | 18 TSCL (typical) |
Key Features
- Dual-channel analog multiplexer in front of a SAR ADC
- Autonomous signal monitoring with event-triggered interrupts per channel
- Digital windowed comparator with programmable high and low thresholds, hysteresis, and event counter
- Internal data buffer for converting and capturing data from sensors
- Efficient host sleep and wake-up capabilities
- Low power consumption of 900 nW, suitable for battery-powered applications
- Compact 10-pin QFN package measuring 1.5 mm x 2 mm
Applications
- PIR Motion and Smoke Detectors
- Preventive Maintenance for Elevators, Escalators, HVAC, Industrial Equipment
- Wearable Electronics
- Zero Cross Detection for Fault Indicators
- Supervisory Functions
- Comparator with Programmable Reference
- Sensors for Deep Learning and Artificial Intelligence
Q & A
- What is the resolution of the ADS7142IRUGR ADC?
The ADS7142IRUGR has a resolution of 12 bits.
- What is the maximum sampling rate of the ADS7142IRUGR?
The maximum sampling rate is up to 140 kSPS.
- What is the typical power consumption of the ADS7142IRUGR?
The typical power consumption is 900 nW.
- What package type and size does the ADS7142IRUGR come in?
The device is housed in a 10-pin QFN package measuring 1.5 mm x 2 mm.
- What are the operating voltage ranges for AVDD and DVDD?
Both AVDD and DVDD operate within the range of 1.65 to 3.6 V.
- What is the operating temperature range of the ADS7142IRUGR?
The operating temperature range is from -40°C to 125°C.
- Does the ADS7142IRUGR support autonomous signal monitoring?
- What are some typical applications of the ADS7142IRUGR?
Typical applications include PIR motion and smoke detectors, preventive maintenance for industrial equipment, wearable electronics, and supervisory functions.
- How does the ADS7142IRUGR optimize power consumption?
The device optimizes power consumption through efficient host sleep and wake-up capabilities and low power operation modes.
- What kind of comparator does the ADS7142IRUGR include?
The device includes a digital windowed comparator with programmable high and low thresholds, hysteresis, and an event counter.
