ADS1131 Series
18-Bit, 80SPS, 1-Ch Delta-Sigma ADC w/ Powerdown Switch for Resistive Bridge Sensors & Weigh Scales
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
18-Bit, 80SPS, 1-Ch Delta-Sigma ADC w/ Powerdown Switch for Resistive Bridge Sensors & Weigh Scales
| Part | Number of A/D Converters | Architecture | Package / Case | Package / Case | Number of Inputs | Voltage - Supply, Analog [Min] | Voltage - Supply, Analog [Max] | Configuration | Reference Type | Voltage - Supply, Digital [Min] | Voltage - Supply, Digital [Max] | Data Interface | Input Type | Supplier Device Package | Mounting Type | Sampling Rate (Per Second) | Operating Temperature [Min] | Operating Temperature [Max] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments ADS1131ID | 1 | Sigma-Delta | 16-SOIC | 0.154 in, 3.9 mm Width | 1 | 3 V | 5.3 V | ADC | External | 3 V | 5.3 V | SPI | Differential | 16-SOIC | Surface Mount | 80 Per Second | -40 °C | 85 °C |
Texas Instruments ADS1131IDR | 1 | Sigma-Delta | 16-SOIC | 0.154 in, 3.9 mm Width | 1 | 3 V | 5.3 V | ADC | External | 3 V | 5.3 V | SPI | Differential | 16-SOIC | Surface Mount | 80 Per Second | -40 °C | 85 °C |
Key Features
• Complete Front-End for Bridge SensorsAvailable in an SO PackageInternal Amplifier, Gain of 64Internal OscillatorLow-Side Power Switch for Bridge Sensor18-Bit Noise-Free ResolutionSelectable 10SPS or 80SPS Data RatesSimultaneous 50Hz and 60Hz Rejection at 10SPSExternal Voltage Reference up to 5V for Ratiometric MeasurementsSimple, Pin-Driven ControlTwo-Wire Serial Digital InterfaceSupply Range: 3V to 5.3V–40°C to +85°C Temperature RangeComplete Front-End for Bridge SensorsAvailable in an SO PackageInternal Amplifier, Gain of 64Internal OscillatorLow-Side Power Switch for Bridge Sensor18-Bit Noise-Free ResolutionSelectable 10SPS or 80SPS Data RatesSimultaneous 50Hz and 60Hz Rejection at 10SPSExternal Voltage Reference up to 5V for Ratiometric MeasurementsSimple, Pin-Driven ControlTwo-Wire Serial Digital InterfaceSupply Range: 3V to 5.3V–40°C to +85°C Temperature Range
Description
AI
The ADS1131 is a precision, 18-bit analog-to-digital converter (ADC). With an onboard, low-noise amplifier, onboard oscillator, precision 18-bit delta-sigma (ΔΣ) ADC, and bridge power switch, the ADS1131 provides a complete front-end solution for bridge sensor applications including weigh scales, strain gauges, and load cells.
The low-noise amplifier has a gain of 64, supporting a full-scale differential input of ±39mV. The ΔΣ 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 ADS1131 can be put into a low-power standby mode or shut off completely in power-down mode.
The ADS1131 is 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 ADS1131 is available in an SO-16 package and is specified from –40°C to +85°C.
The ADS1131 is a precision, 18-bit analog-to-digital converter (ADC). With an onboard, low-noise amplifier, onboard oscillator, precision 18-bit delta-sigma (ΔΣ) ADC, and bridge power switch, the ADS1131 provides a complete front-end solution for bridge sensor applications including weigh scales, strain gauges, and load cells.
The low-noise amplifier has a gain of 64, supporting a full-scale differential input of ±39mV. The ΔΣ 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 ADS1131 can be put into a low-power standby mode or shut off completely in power-down mode.
The ADS1131 is 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 ADS1131 is available in an SO-16 package and is specified from –40°C to +85°C.