Overview
The ADS1210U/1K, manufactured by Texas Instruments, is a precision, 24-bit delta-sigma Analog-to-Digital (A/D) converter. This device operates from a single +5V supply and is designed for high-resolution measurement applications. It features differential inputs, making it ideal for direct connection to transducers or low-level voltage signals. The ADS1210U/1K includes a programmable gain amplifier (PGA) and a flexible SPI-compatible synchronous serial interface, which also supports a two-wire control mode for low-cost isolation. The device is available in an 18-pin SOIC package.
Key Specifications
| Parameter | Description |
|---|---|
| Number of Bits | 24 |
| Sampling Rate | Up to 16 kSPS |
| Number of Inputs | 1 (Single-channel) |
| Input Type | Differential |
| Data Interface | SPI-compatible, 2-wire mode |
| Architecture | Delta-Sigma |
| Reference Type | Internal, External |
| Supply Voltage (Analog/Digital) | +5V nominal |
| Operating Temperature | -40°C to 85°C |
| Package | 18-pin SOIC |
Key Features
- 24-bit resolution with effective resolution of 23 bits at 10Hz and 20 bits at 1000Hz
- Programmable gain amplifier (PGA) with gains of 1, 2, 4, 8, or 16
- Fully differential switched capacitor architecture for low system noise and high common-mode rejection (115dB)
- Turbo Mode for increased sampling rates up to 312kHz
- On-chip self-calibration for internal offset and gain errors
- Flexible SPI-compatible synchronous serial interface with 2-wire control mode
- Internal 2.5V reference and support for external reference
Applications
The ADS1210U/1K is designed for various high-resolution measurement applications, including:
- Smart transmitters
- Industrial process control
- Weigh scales
- Chromatography
- Portable instrumentation
Q & A
- What is the resolution of the ADS1210U/1K?
The ADS1210U/1K has a 24-bit resolution, with an effective resolution of 23 bits at 10Hz and 20 bits at 1000Hz.
- What types of inputs does the ADS1210U/1K support?
The device supports differential inputs.
- What is the sampling rate of the ADS1210U/1K?
The sampling rate can go up to 16 kSPS, and with Turbo Mode, it can be increased to higher rates.
- What is the purpose of the programmable gain amplifier (PGA) in the ADS1210U/1K?
The PGA allows for gains of 1, 2, 4, 8, or 16, increasing the dynamic range and simplifying the interface to common transducers.
- Does the ADS1210U/1K support internal and external references?
Yes, it supports both internal and external references.
- What is the operating temperature range of the ADS1210U/1K?
The operating temperature range is -40°C to 85°C.
- What is the package type of the ADS1210U/1K?
The device is available in an 18-pin SOIC package.
- What are some common applications of the ADS1210U/1K?
Common applications include smart transmitters, industrial process control, weigh scales, chromatography, and portable instrumentation.
- Does the ADS1210U/1K have self-calibration capabilities?
Yes, it includes on-chip self-calibration for internal offset and gain errors.
- What type of serial interface does the ADS1210U/1K use?
The device uses a flexible SPI-compatible synchronous serial interface with a 2-wire control mode.
