Overview
The ADS114S08IPBSR from Texas Instruments is a precision, 16-bit, delta-sigma (ΔΣ) analog-to-digital converter (ADC) designed for low power consumption and high integration. This device is particularly suited for applications involving the measurement of small-signal sensors, such as those in industrial, medical, and process control environments. It features a low-noise, programmable gain amplifier (PGA) and multiple integrated features to reduce system cost and component count.
Key Specifications
| Parameter | Specification |
|---|---|
| Resolution | 16-bit |
| Sampling Rate | 2.5 SPS to 4 kSPS |
| Number of Channels | 12 (ADS114S08) |
| Programmable Gain | 1 to 128 |
| Internal Reference | 2.5 V, 10 ppm/°C (max) Drift |
| Internal Oscillator | 4.096 MHz, 1.5% Accuracy |
| Power Consumption | As low as 280 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 or VQFN-32 |
Key Features
- Low power consumption: As low as 280 µA
- Programmable gain amplifier (PGA) with gains ranging from 1 to 128
- Configurable digital filters with low-latency conversion results and 50-Hz or 60-Hz rejection
- Analog multiplexer with 12 independently selectable inputs
- Dual-matched programmable current sources for sensor excitation: 10 µA to 2000 µA
- Internal temperature sensor and extended fault detection circuits
- Self offset and system calibration capabilities
- Four general-purpose I/Os
- SPI-compatible interface with optional CRC
- Sensor burn-out detection and voltage bias for thermocouples
Applications
- Industrial process control and automation
- Medical devices, such as patient monitoring systems
- Environmental monitoring, including temperature and pressure sensing
- Aerospace and defense applications requiring high precision and reliability
- Automotive systems, particularly those involving sensor measurements
Q & A
- What is the resolution of the ADS114S08IPBSR ADC?
The ADS114S08IPBSR has a resolution of 16 bits. - What are the programmable gain options for the ADS114S08IPBSR?
The device offers programmable gain options ranging from 1 to 128. - How many channels does the ADS114S08IPBSR support?
The ADS114S08IPBSR supports 12 channels. - What is the power consumption of the ADS114S08IPBSR?
The power consumption is as low as 280 µA. - What are the operating temperature ranges for the ADS114S08IPBSR?
The operating temperature range is –50°C to +125°C. - Does the ADS114S08IPBSR have internal temperature sensing capabilities?
Yes, it includes an internal temperature sensor. - What types of packages are available for the ADS114S08IPBSR?
The device is available in TQFP-32 and VQFN-32 packages. - Does the ADS114S08IPBSR 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 is the purpose of the dual-matched programmable current sources in the ADS114S08IPBSR?
The dual-matched programmable current sources are for sensor excitation, ranging from 10 µA to 2000 µA. - Does the ADS114S08IPBSR have extended fault detection circuits?
Yes, it includes extended fault detection circuits and self offset and system calibration capabilities.
