Overview
The ADS1271IBPW, produced by Texas Instruments, is a 24-bit, delta-sigma analog-to-digital converter (ADC) designed to offer high precision and versatility in various industrial and measurement applications. This ADC features a data rate of up to 105kSPS and combines excellent DC accuracy with outstanding AC performance. The device is equipped with a high-order, chopper-stabilized modulator that achieves very low drift and low in-band noise, making it suitable for high-precision industrial measurements over an extended temperature range.
Key Specifications
| Parameter | High-Speed Mode | High-Resolution Mode | Low-Power Mode |
|---|---|---|---|
| Data Rate | 105,469 SPS | 52,734 SPS | 52,734 SPS |
| Resolution | 24 bits | 24 bits | 24 bits |
| Signal-to-Noise Ratio (SNR) | 106 dB | 109 dB | 106 dB |
| Total Harmonic Distortion (THD) | -108 dB | -108 dB | -108 dB |
| Offset Drift | 1.8 µV/°C | 1.8 µV/°C | 1.8 µV/°C |
| Gain Drift | 2 ppm/°C | 2 ppm/°C | 2 ppm/°C |
| Analog Supply | 5V | 5V | 5V |
| Digital Supply | 1.8V to 3.3V | 1.8V to 3.3V | 1.8V to 3.3V |
| Operating Temperature Range | -40°C to +105°C | -40°C to +105°C | -40°C to +105°C |
| Power Dissipation | 92-136 mW | 90-134 mW | 35-54 mW |
Key Features
- Selectable Operating Modes: High-Speed (105kSPS), High-Resolution (109dB SNR), and Low-Power (35mW) modes for optimization of speed, resolution, and power.
- AC Performance: 51kHz bandwidth, 109dB SNR in High-Resolution mode, and -108dB THD.
- DC Accuracy: 1.8µV/°C offset drift and 2ppm/°C gain drift.
- Digital Filter: Linear phase response, ±0.005dB passband ripple, and 100dB stop band attenuation.
- Internal Offset Calibration: On-command calibration for improved accuracy.
- Selectable SPI or Frame Sync Serial Interface: Flexible communication options.
- Daisy-Chainable Serial Interface: Easy synchronization and multichannel system support.
- Simple Pin-Driven Control: Easy mode selection and control.
- Modulator Output Option: Available in certain configurations.
Applications
- Vibration/Modal Analysis: Suitable for precise vibration and modal analysis applications.
- Acoustics: Used in acoustic measurements requiring high resolution and low noise.
- Dynamic Strain Gauges and Pressure Sensors: Ideal for strain gauge and pressure sensor applications needing high accuracy.
- Test and Measurement: Widely used in various test and measurement instruments.
Q & A
- What is the maximum data rate of the ADS1271IBPW?
The maximum data rate of the ADS1271IBPW is up to 105kSPS in High-Speed mode.
- What are the different operating modes available for the ADS1271IBPW?
The ADS1271IBPW offers High-Speed, High-Resolution, and Low-Power operating modes.
- What is the signal-to-noise ratio (SNR) in High-Resolution mode?
The SNR in High-Resolution mode is 109 dB.
- What is the offset drift of the ADS1271IBPW?
The offset drift is 1.8 µV/°C.
- What are the analog and digital supply voltage ranges for the ADS1271IBPW?
The analog supply voltage is 5V, and the digital supply voltage ranges from 1.8V to 3.3V.
- What is the operating temperature range of the ADS1271IBPW?
The operating temperature range is -40°C to +105°C.
- Does the ADS1271IBPW support daisy-chaining for multichannel systems?
Yes, it supports daisy-chaining for easy synchronization in multichannel systems.
- What types of serial interfaces are available for the ADS1271IBPW?
The device supports both SPI and Frame Sync serial interfaces.
- Can the ADS1271IBPW be used in vibration analysis applications?
Yes, it is suitable for precise vibration and modal analysis applications.
- How does the ADS1271IBPW handle power management?
The device has a power-down mode and different power dissipation levels depending on the operating mode.
