ADS7142-Q1 Texas instruments

ADS7142-Q1

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ADS7142-Q1

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Описание

The ADS7142-Q1 is a 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 designed for space-constrained applications.

AEC-Q100 qualified for automotive applications:
- Temperature grade 1: –40°C to +125°C, T_A
Functional Safety-Capable
- Documentation available to aid functional safety system design
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

Resolution (Bits)	12
Sample rate (max) (ksps)	140
Number of input channels	2
Interface type	I2C
Architecture	SAR
Input type	Pseudo-Differential, Single-ended
Multichannel configuration	Multiplexed
Rating	Automotive
TI functional safety category	Functional Safety-Capable
Reference mode	Supply
Input voltage range (max) (V)	3.6
Input voltage range (min) (V)	0
Features	Comparator, Oscillator, Small Size
Operating temperature range (°C)	-40 to 125
Power consumption (typ) (mW)	0.0009
Analog supply (min) (V)	1.65
Analog supply voltage (max) (V)	3.6
SNR (dB)	71.5
Digital supply (min) (V)	1.65
Digital supply (max) (V)	3.6