Overview
The ADS1216Y/250, produced by Texas Instruments, is a high-precision, 8-channel, 24-bit analog-to-digital converter (ADC) designed for a wide range of high-resolution measurement applications. This delta-sigma ADC offers exceptional performance with features such as no missing codes, a programmable gain amplifier (PGA), and on-chip calibration. It operates within a voltage range of 2.7V to 5.25V, making it versatile for various industrial and scientific uses.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Resolution | 24 | 24 | Bits | ||
| Integral Nonlinearity (INL) | End-point fit | ±0.0015% | % of FS | ||
| Offset Error | 7.5 ppm of FS | ppm of FS | |||
| Gain Error | 0.005% | % | |||
| PGA Gain Ranges | 1 | 128 | |||
| Analog Input Range (Buffer OFF) | AGND – 0.1 | AVDD + 0.1 | V | ||
| Analog Input Range (Buffer ON) | AGND + 0.05 | AVDD – 1.5 | V | ||
| Power Supply Voltage (AVDD) | 4.75 | 5.25 | V | ||
| Operating Temperature Range | –40 | +85 | °C | ||
| Power Dissipation (PGA = 1, Buffer OFF) | 1.6 | 2.5 | mW |
Key Features
- 24-Bit Resolution with No Missing Codes: Ensures high precision and accuracy in measurements.
- Programmable Gain Amplifier (PGA): Offers selectable gains from 1 to 128.
- On-Chip Calibration and Reference: Includes a 1.25V or 2.5V on-chip voltage reference and external differential reference capability.
- Single-Cycle Settling Mode and Programmable Data Output Rates: Up to 1 kHz data output rate.
- Internal Buffering and Burnout Current Sources: Provides high input impedance and detection of open or shorted sensors.
- SPI-Compatible Serial Interface: Facilitates easy communication with microcontrollers.
- Low Power Consumption: Less than 1 mW in normal operation.
Applications
- Industrial Process Control: Suitable for precise measurement and control in industrial environments.
- Liquid/Gas Chromatography: Ideal for high-resolution measurements in chromatography applications.
- Blood Analysis: Used in medical devices for precise blood analysis.
- Smart Transmitters: Enhances the accuracy and reliability of smart transmitter systems.
- Portable Instrumentation: Perfect for portable devices requiring high-resolution measurements.
- Weight Scales and Pressure Transducers: Ensures accurate measurements in weight scales and pressure transducer applications.
Q & A
- What is the resolution of the ADS1216Y/250 ADC?
The ADS1216Y/250 has a 24-bit resolution with no missing codes. - What are the gain ranges of the PGA in the ADS1216Y/250?
The PGA offers selectable gains from 1 to 128. - What is the operating voltage range of the ADS1216Y/250?
The device operates within a voltage range of 2.7V to 5.25V. - Does the ADS1216Y/250 have on-chip calibration?
Yes, it includes on-chip calibration and reference capabilities. - What is the maximum data output rate of the ADS1216Y/250?
The maximum data output rate is up to 1 kHz. - Is the ADS1216Y/250 compatible with SPI interfaces?
Yes, it has an SPI-compatible serial interface. - What are the typical applications of the ADS1216Y/250?
It is used in industrial process control, liquid/gas chromatography, blood analysis, smart transmitters, portable instrumentation, weight scales, and pressure transducers. - How much power does the ADS1216Y/250 consume?
The device consumes less than 1 mW in normal operation. - What is the operating temperature range of the ADS1216Y/250?
The operating temperature range is from –40°C to +85°C. - Does the ADS1216Y/250 have internal buffering and burnout current sources?
Yes, it includes internal buffering and burnout current sources for high input impedance and sensor fault detection.
