Overview
The ADS124S06IPBSR from Texas Instruments is a precision, 24-bit, delta-sigma (ΔΣ) analog-to-digital converter (ADC) designed for high-accuracy sensor measurements. This device is part of the ADS124S06 series and is optimized for low power consumption and integrated features to reduce system cost and component count. It is particularly suited for applications involving small-signal sensors such as resistive bridges and thermocouples.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 24 bits |
| Sampling Rate | Up to 4 kSPS |
| Number of Channels | 6 |
| Programmable Gain | 1 to 128 |
| Noise (PGA) | 19 nV RMS at Gain = 128 |
| Internal Reference | 2.5 V, 10 ppm/°C (max) Drift |
| Internal Oscillator | 4.096 MHz, 1.5% Accuracy |
| Excitation Current Sources | 10 µA to 2000 µA |
| Analog Supply | Unipolar (2.7 V to 5.25 V) or Bipolar (±2.5 V) |
| Digital Supply | 2.7 V to 3.6 V |
| Operating Temperature | –50°C to +125°C |
| Package | TQFP-32 (PBS) |
Key Features
- Low power consumption: As low as 280 µA
- Low-noise programmable gain amplifier (PGA) with gains from 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 6 independently selectable inputs
- Dual-matched programmable current sources for sensor excitation
- Internal temperature sensor and extended fault detection circuits
- Self offset and system calibration capabilities
- Four general-purpose I/Os and SPI-compatible interface with optional CRC
Applications
- Precision sensor measurement in industrial environments
- Resistive bridge and thermocouple applications
- RTD (Resistance Temperature Detector) biasing and measurement
- System monitoring and sensor burn-out detection
- Voltage bias for thermocouples and other small-signal sensors
Q & A
- What is the resolution of the ADS124S06IPBSR?
The ADS124S06IPBSR has a resolution of 24 bits. - What is the maximum sampling rate of the ADS124S06IPBSR?
The maximum sampling rate is up to 4 kSPS. - How many channels does the ADS124S06IPBSR support?
The device supports 6 channels. - What is the range of the programmable gain amplifier (PGA)?
The PGA has gains ranging from 1 to 128. - What is the noise level of the PGA at gain 128?
The noise level is 19 nV RMS at Gain = 128. - What is the internal reference voltage and its drift?
The internal reference voltage is 2.5 V with a drift of 10 ppm/°C (max). - What are the operating temperature ranges for the ADS124S06IPBSR?
The operating temperature range is –50°C to +125°C. - What types of packages are available for the ADS124S06IPBSR?
The device is available in a TQFP-32 (PBS) package. - Does the ADS124S06IPBSR 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 the general-purpose I/Os and interface options?
The device includes four general-purpose I/Os and an SPI-compatible interface with optional CRC.
