Overview
The ADS124S08IPBS is a precision, 24-bit, delta-sigma (ΔΣ) analog-to-digital converter (ADC) produced by Texas Instruments. This device is designed for applications requiring high accuracy and low power consumption, particularly in measuring small-signal sensors. It features a low-noise, programmable gain amplifier (PGA) and an integrated voltage reference, making it suitable for various industrial and medical applications. The ADS124S08IPBS is available in a 32-pin TQFP (PBS) package, offering a compact solution for system integration.
Key Specifications
| Attribute | Value |
|---|---|
| Number of Bits | 24 |
| Sampling Rate (Per Second) | 4 kSPS |
| Number of Inputs | 12 |
| Input Type | Single Ended |
| Data Interface | SPI |
| Analog Supply Voltage | 2.7 V to 5.25 V (Unipolar), ±2.5 V (Bipolar) |
| Digital Supply Voltage | 2.7 V to 3.6 V |
| Operating Temperature Range | –50°C to +125°C |
| Package Type | 32-pin TQFP (PBS) |
| Internal Oscillator Frequency | 4.096 MHz, 1.5% Accuracy |
| Internal Reference Voltage | 2.5 V, 10 ppm/°C (max) Drift |
Key Features
- Low Power Consumption: As low as 280 µA
- Low-Noise PGA: 19 nV RMS at Gain = 128
- Programmable Gain: 1 to 128
- Programmable Data Rates: 2.5 SPS to 4 kSPS
- Simultaneous 50-Hz and 60-Hz Rejection at ≤ 20 SPS with Low-Latency Digital Filter
- Analog Multiplexer with 12 Independently Selectable Inputs
- Dual-Matched Programmable Current Sources for Sensor Excitation: 10 µA to 2000 µA
- Internal Temperature Sensor
- Extended Fault Detection Circuits
- Self Offset and System Calibration
- Four General-Purpose I/Os
- SPI-Compatible Interface with Optional CRC
Applications
- Sensor Transducers and Transmitters: Temperature, Pressure, Strain, Flow
- PLC and DCS Analog Input Modules
- Temperature Controllers
- Climate Chambers, Industrial Ovens
- Medical Devices
Q & A
- What is the resolution of the ADS124S08IPBS ADC?
The ADS124S08IPBS has a resolution of 24 bits.
- What is the maximum sampling rate of the ADS124S08IPBS?
The maximum sampling rate is 4 kSPS.
- How many input channels does the ADS124S08IPBS have?
The device has 12 independently selectable input channels.
- What is the operating temperature range of the ADS124S08IPBS?
The operating temperature range is –50°C to +125°C.
- What type of data interface does the ADS124S08IPBS use?
The device uses an SPI-compatible interface with optional CRC.
- What are the power supply voltage ranges for the ADS124S08IPBS?
The analog supply voltage range is 2.7 V to 5.25 V (unipolar) or ±2.5 V (bipolar), and the digital supply voltage range is 2.7 V to 3.6 V.
- Does the ADS124S08IPBS have internal current sources for sensor excitation?
Yes, it has dual-matched programmable current sources ranging from 10 µA to 2000 µA.
- What is the internal reference voltage and its drift?
The internal reference voltage is 2.5 V with a maximum drift of 10 ppm/°C.
- Does the ADS124S08IPBS support simultaneous 50-Hz and 60-Hz rejection?
Yes, it supports simultaneous 50-Hz and 60-Hz rejection at ≤ 20 SPS with a low-latency digital filter.
- What are some of the applications for the ADS124S08IPBS?
Applications include sensor transducers and transmitters, PLC and DCS analog input modules, temperature controllers, climate chambers, and industrial ovens.
