ADS7142-Q1 Automotive 12-bit 140kSPS 2-channel nanopower SAR ADC with 1.8V operation | TI.com

ADS7142-Q1 (PREVIEW)

Automotive 12-bit 140kSPS 2-channel nanopower SAR ADC with 1.8V operation

 

Sample availability

Preproduction samples are available (XDS7142QDQCRQ1). Order now

Description

The ADS7142-Q1 is 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 suitable for space-constrained applications.

Features

  • AEC-Q100 Qualified for Automotive Applications:
    • Device Temperature Grade 1:
      –40°C to 125°C, TA
  • 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

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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
ADS7142-Q1 ADS1015-Q1 ADS7828-Q1 ADS7950-Q1 ADS8353-Q1
12
16    
12     12     12     16    
140     3.3     50     1000     600    
2     4     8     4     2    
I2C     I2C     I2C     SPI     SPI    
-40 to 125     -40 to 125     -40 to 85     -40 to 125     -40 to 125    
WSON | 10     VSSOP | 10     TSSOP | 16     TSSOP | 30     TSSOP | 16    
1.00 | 1ku     1.36 | 1ku     4.22 | 1ku     2.71 | 1ku     10.62 | 1ku    
0.0009     0.9     0.675     14.5     45    
See datasheet (WSON)     10VSSOP: 9 mm2: 3 x 3 (VSSOP | 10)     16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)     30TSSOP: 50 mm2: 6.4 x 7.8 (TSSOP | 30)     16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)    
SAR     Delta-Sigma     SAR     SAR     SAR    
Pseudo-Differential
Single-Ended    
Differential
Single-Ended    
Pseudo-Differential
Single-Ended    
Single-Ended     Pseudo-Differential
Single-Ended    
Multiplexed     Multiplexed     Multiplexed     Multiplexed     Simultaneous Sampling    
Supply     Int     Ext
Int    
Ext     Ext
Int    
Comparator
Oscillator
Small Size    
Comparator
Oscillator
PGA    
   
   
   
3.6     5.5     5.25     5.25     5.5    
0     0     0     0     0    
1.65     2     2.7     2.7     4.5    
3.6     5.5     5.25     5.25     5.5    
1.65     2     2.7     1.7     1.65    
3.6     5.5     5.25     5.25     5.5    
1     0.5     1     1.5     2.5    
71       71     71.3     88.7    
71.5       72     71.7     89