Overview
The Texas Instruments ADS1274IPAPT is a 24-bit, delta-sigma (ΔΣ) analog-to-digital converter (ADC) designed for high-precision industrial measurements. Based on the single-channel ADS1271, the ADS1274 allows simultaneous sampling of four channels with data rates up to 144k samples per second (SPS). This device combines the benefits of industrial delta-sigma ADCs, known for their excellent DC specifications, with the high bandwidth capabilities of ADCs used in audio applications. The ADS1274 is available in an HTQFP-64 PowerPAD™ package and is fully specified over the extended industrial temperature range of –40°C to +105°C.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 24-bit |
| Data Rate | Up to 144k SPS |
| Number of Channels | 4 (simultaneous sampling) |
| AC Performance | 70kHz Bandwidth, 111dB SNR (High-Resolution Mode), –108dB THD |
| DC Accuracy | 0.8µV/°C Offset Drift, 1.3ppm/°C Gain Drift |
| Operating Modes | High-Speed, High-Resolution, Low-Power, Low-Speed |
| Analog Supply | 5V |
| Digital Core Supply | 1.8V |
| I/O Supply | 1.8V to 3.3V |
| Package | HTQFP-64 PowerPAD™ |
| Operating Temperature Range | –40°C to +105°C |
Key Features
- Simultaneous measurement of four channels
- Up to 144k SPS data rate
- High-order, chopper-stabilized modulator for low drift and in-band noise
- Onboard decimation filter for suppressing modulator and signal out-of-band noise
- Linear phase digital filter
- SPI™ or Frame-Sync serial interface
- Low sampling aperture error
- Modulator output option (digital filter bypass)
- Four operating modes: High-Speed, High-Resolution, Low-Power, Low-Speed
Applications
- Vibration/Modal Analysis
- Multi-Channel Data Acquisition
- Acoustics/Dynamic Strain Gauges
- Pressure Sensors
Q & A
- What is the resolution of the ADS1274IPAPT?
The ADS1274IPAPT has a 24-bit resolution.
- What is the maximum data rate of the ADS1274IPAPT?
The maximum data rate is up to 144k samples per second (SPS).
- How many channels can the ADS1274IPAPT sample simultaneously?
The ADS1274IPAPT can sample four channels simultaneously.
- What are the AC performance specifications of the ADS1274IPAPT?
The AC performance includes 70kHz bandwidth, 111dB SNR (High-Resolution Mode), and –108dB THD.
- What are the DC accuracy specifications of the ADS1274IPAPT?
The DC accuracy specifications include 0.8µV/°C offset drift and 1.3ppm/°C gain drift.
- What are the available operating modes for the ADS1274IPAPT?
The available operating modes are High-Speed, High-Resolution, Low-Power, and Low-Speed.
- What is the package type and pin count of the ADS1274IPAPT?
The package type is HTQFP-64 PowerPAD™ with 64 pins.
- What is the operating temperature range of the ADS1274IPAPT?
The operating temperature range is –40°C to +105°C.
- What types of interfaces does the ADS1274IPAPT support?
The ADS1274IPAPT supports SPI™ or Frame-Sync serial interfaces.
- What are some common applications for the ADS1274IPAPT?
Common applications include vibration/modal analysis, multi-channel data acquisition, acoustics/dynamic strain gauges, and pressure sensors.
