ADS7142 Nanopower, Dual-Channel, Programmable Sensor Monitor | TI.com

ADS7142 (ACTIVE)

Nanopower, Dual-Channel, Programmable Sensor Monitor

Nanopower, Dual-Channel, Programmable Sensor Monitor - ADS7142
 

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 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.

Features

  • 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

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Parametrics Compare all products in Precision ADCs (<=10MSPS)

 
Resolution (Bits)
Sample Rate (Max) (kSPS)
Number of input channels
Interface
Operating Temperature Range (C)
Package Group
Approx. Price (US$)
Power Consumption (Typ) (mW)
Package Size: mm2:W x L (PKG)
Architecture
Input Type
Multi-Channel Configuration
Reference Mode
Features
Input Range (Max) (V)
Input Range (Min) (V)
Analog Voltage AVDD (Min) (V)
Analog Voltage AVDD (Max) (V)
Digital Supply (Min) (V)
Digital Supply (Max) (V)
INL (Max) (+/-LSB)
SINAD (dB)
SNR (dB)
THD (Typ) (dB)
Rating
Sample Rate (Max) (MSPS)
ADS7142 ADS7042 ADS7056 ADS7924 ADS7950
12
16    
12     14     12     12    
140     1000     2500     100     1000    
2     1     1     4     4    
I2C     SPI     SPI     I2C     SPI    
-40 to 125     -40 to 125     -40 to 125     -40 to 85     -40 to 125    
X2QFN | 10     VSSOP | 8
X2QFN | 8    
X2QFN | 8     WQFN | 16     TSSOP | 30
VQFN | 24    
0.85 | 1ku     0.99 | 1ku     2.00 | 1ku     1.25 | 1ku     2.07 | 1ku    
0.0009     0.234     3.5     0.5     11.5    
10X2QFN: 3 mm2: 2 x 1.5 (X2QFN | 10)     8VSSOP: 6 mm2: 3.1 x 2 (VSSOP | 8)
8X2QFN: 2 mm2: 1.5 x 1.5 (X2QFN | 8)    
8X2QFN: 2 mm2: 1.5 x 1.5 (X2QFN | 8)     16WQFN: 9 mm2: 3 x 3 (WQFN | 16)     30TSSOP: 50 mm2: 6.4 x 7.8 (TSSOP | 30)
24VQFN: 16 mm2: 4 x 4 (VQFN | 24)    
SAR     SAR     SAR     SAR     SAR    
Pseudo-Differential
Single-Ended    
Single-Ended     Single-Ended     Single-Ended     Single-Ended    
Multiplexed     N/A     N/A     Multiplexed     Multiplexed    
Supply     Supply     Supply     Supply     Ext    
Comparator
Oscillator
Small Size    
Small Size     Small Size     Oscillator
Small Size    
N/A    
3.6     3.6     3.6     5.5     5.25    
0     0     0     0     0    
1.65     1.65     2.35     2.2     2.7    
3.6     3.6     3.6     5.5     5.25    
1.65     1.65     1.65     1.65     1.7    
3.6     3.6     3.6     5.5     5.25    
1     1     3     1.5     1    
71     69.5     74.5       71.3    
71.5     70     74.9       71.7