Overview
The ADS1211U/1K is a precision, 24-bit delta-sigma analog-to-digital converter (ADC) produced by Texas Instruments, although it is often associated with the Burr Brown brand due to TI's acquisition of Burr Brown. This converter is designed for high-resolution measurement applications and operates from a single +5V supply. It features a wide dynamic range, low noise, and high accuracy, making it suitable for various industrial and scientific applications.
Key Specifications
| Parameter | Value | Notes |
|---|---|---|
| Resolution | 24 bits | |
| Effective Resolution | 23 bits at 10Hz, 20 bits at 1kHz | Turbo Mode dependent |
| Input Type | Differential | |
| Programmable Gain Amplifier | 1 to 16 in binary steps | |
| Reference Type | Internal/External | |
| Sampling Rate | Up to 16k samples per second | Turbo Mode dependent |
| Supply Voltage | 4.75V to 5.25V (Analog and Digital) | |
| Power Consumption | 26mW to 40mW (typical) | Dependent on Turbo Mode and reference |
| Operating Temperature | -40°C to +85°C | |
| Package Type | 24-SOIC |
Key Features
- Delta-Sigma Architecture: Ensures wide dynamic range and high resolution.
- Programmable Gain Amplifier: Gain range of 1 to 16 in binary steps.
- Flexible Serial Interface: SPI-compatible with 2-wire control mode.
- On-Chip Self-Calibration: Corrects for internal offset and gain errors.
- 4-Channel Input Multiplexer: Available in the ADS1211 model.
- Low Noise and High Common-Mode Rejection: Ideal for direct connection to transducers or low-level voltage signals.
Applications
- Smart Transmitters: High-resolution measurement applications.
- Industrial Process Control: Precision measurement and control.
- Weigh Scales: Accurate weight measurement.
- Chromatography: High-resolution data acquisition.
- Portable Instrumentation: Compact and power-efficient design.
Q & A
- What is the resolution of the ADS1211U/1K?
The ADS1211U/1K has a 24-bit resolution.
- What is the effective resolution at different sample rates?
The effective resolution is 23 bits at 10Hz and 20 bits at 1kHz in Turbo Mode.
- What type of input does the ADS1211U/1K support?
The ADS1211U/1K supports differential inputs.
- What is the range of the programmable gain amplifier?
The programmable gain amplifier has a gain range of 1 to 16 in binary steps.
- Can the ADS1211U/1K use both internal and external references?
Yes, the ADS1211U/1K can use both internal and external references.
- What is the maximum sampling rate of the ADS1211U/1K?
The maximum sampling rate is up to 16k samples per second, dependent on Turbo Mode.
- What is the power supply voltage range for the ADS1211U/1K?
The power supply voltage range is 4.75V to 5.25V for both analog and digital supplies.
- What is the typical power consumption of the ADS1211U/1K?
The typical power consumption is between 26mW to 40mW, dependent on the Turbo Mode and reference used.
- What is the operating temperature range of the ADS1211U/1K?
The operating temperature range is -40°C to +85°C.
- In what package is the ADS1211U/1K available?
The ADS1211U/1K is available in a 24-SOIC package.
