ADS1130 18-Bit, 80SPS, 1-Ch Delta-Sigma ADC for Resistive Bridge Sensors & Weigh Scales | TI.com

ADS1130 (ACTIVE) 18-Bit, 80SPS, 1-Ch Delta-Sigma ADC for Resistive Bridge Sensors & Weigh Scales

 

Description

The ADS1130 is a precision, 18-bit analog-to-digital converter (ADC). With an onboard low-noise gain amplifier, onboard oscillator, and precision 18-bit delta-sigma ADC, the ADS1130 provides a complete front-end solution for bridge sensor applications including weigh scales and strain gauges.

The low-noise amplifier has a gain of 64, supporting a full-scale differential input of ±39mV. The delta-sigma ADC has 18-bit effective resolution and is comprised of a third-order modulator and fourth-order digital filter. Two data rates are supported: 10SPS (with both 50Hz and 60Hz rejection) and 80SPS. The ADS1130 can be put into a low-power standby mode or shut off completely in power-down mode.

All of the features of the ADS1130 are controlled by dedicated pins; there are no digital registers to program. Data are output over an easily-isolated serial interface that connects directly to the MSP430 and other microcontrollers.

The ADS1130 is available in a TSSOP-16 package and is specified for operation from -40°C to +85°C.

Features

  • 18-Bit Noise-Free Resolution
  • Complete Front-End for Bridge Sensor
  • Onboard Gain of 64
  • Onboard Oscillator
  • Selectable 10SPS or 80SPS Data Rates
  • Simultaneous 50Hz and 60Hz Rejection at 10SPS
  • External Voltage Reference up to 5V for Ratiometric Measurements
  • Simple, Pin-Driven Control
  • Two-Wire Serial Digital Interface
  • Tiny TSSOP-16 Package
  • Supply Range: 2.7V to 5.3V
  • APPLICATIONS
    • Weigh Scales
    • Strain Gauges

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WEBENCH® Designer ADS1130



Parametrics

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Part number Order 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) Rating
ADS1130 Order now 18     0.08     1     SPI     -40 to 85     TSSOP | 16     2.50 | 1ku     2.9     16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)     Delta-Sigma     Differential
Single-Ended    
   
Ext     50/60 Hz Rejection
Oscillator    
0.041     0     2.7     5.3     2.7     5.3     Catalog    
ADS1131 Order now 18     0.08     1     SPI     -40 to 85     SOIC | 16     2.10 | 1ku     2.9     16SOIC: 59 mm2: 6 x 9.9 (SOIC | 16)     Delta-Sigma     Differential
Single-Ended    
   
Ext     50/60 Hz Rejection
Oscillator    
0.041     0     3     5.3     3     5.3     Catalog    
ADS1230 Order now 20     0.08     1     SPI     -40 to 85     TSSOP | 16     2.95 | 1ku     2.9     16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)     Delta-Sigma     Differential
Single-Ended    
   
Ext     50/60 Hz Rejection
Oscillator
PGA    
0.039     0     2.7     5.3     2.7     5.3     Catalog    
ADS1231 Order now 24     0.08     1     SPI     -40 to 85     SOIC | 16     2.50 | 1ku     5     16SOIC: 59 mm2: 6 x 9.9 (SOIC | 16)     Delta-Sigma     Differential
Single-Ended    
   
Ext     50/60 Hz Rejection
Oscillator    
0.0195     0     3     5.3     3     5.3     Catalog