Overview
The ADS1210U/1KG4, produced by Texas Instruments, is a precision 24-bit Analog-to-Digital (A/D) converter designed for high-resolution measurement applications. This delta-sigma A/D converter operates from a single +5V supply and features differential inputs, making it ideal for direct connection to transducers or low-level voltage signals. The ADS1210U is a single-channel converter, available in 18-pin DIP and 18-lead SOIC packages, and is part of the ADS1210 and ADS1211 family, which are known for their wide dynamic range and high resolution capabilities.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Input Voltage Range | - | 0 | - | +5 | V |
| Input Impedance | G = Gain, TMR = Turbo Mode Rate | - | 4/(G • TMR) | - | MΩ |
| Programmable Gain Amplifier | User Programmable | 1 | - | 16 | - |
| Power Supply Voltage | - | 4.75 | - | 5.25 | V |
| Power Supply Current: Analog | - | - | 2 | - | mA |
| Power Supply Current: Digital | - | - | 3.5 | - | mA |
| Temperature Range | Specified | -40 | - | +85 | °C |
| Storage Temperature | - | -60 | - | +125 | °C |
Key Features
- Differential Inputs: Ideal for direct connection to transducers or low-level voltage signals.
- Programmable Gain Amplifier: Gain range of 1 to 16 in binary steps, enhancing the dynamic range of the converter.
- Turbo Mode: Increases the sampling rate of the input capacitor, allowing for higher data rates while maintaining resolution.
- Flexible SPI-Compatible Interface: Supports both self-clocked (Master Mode) and externally clocked (Slave Mode) operations.
- Internal/External Reference: Allows for the use of either an internal 2.5V reference or an external reference.
- On-Chip Self-Calibration: Corrects for internal offset and gain errors, and can be run internally or externally as needed.
- Low Noise and High Common-Mode Rejection: Ensures high accuracy and stability in measurements.
Applications
- Smart Transmitters: High-resolution measurement capabilities make it suitable for smart transmitter applications.
- Industrial Process Control: Used in various industrial processes requiring precise measurements.
- Weigh Scales: Ideal for applications requiring high accuracy and stability in weight measurements.
- Chromatography: Suitable for analytical instruments in chromatography due to its high resolution and dynamic range.
- Portable Instrumentation: Used in portable devices where high precision and low power consumption are critical.
Q & A
- What is the resolution of the ADS1210U/1KG4?
The ADS1210U/1KG4 has a 24-bit resolution, with an effective resolution of 23 bits at 10Hz and 20 bits at 1000Hz.
- What is the input voltage range for the ADS1210U/1KG4?
The input voltage range is from 0V to +5V.
- What are the available gain settings for the programmable gain amplifier?
The gain can be set to 1, 2, 4, 8, or 16 in binary steps.
- What is the Turbo Mode feature in the ADS1210U/1KG4?
Turbo Mode increases the sampling rate of the input capacitor, allowing for higher data rates while maintaining resolution.
- What types of interfaces does the ADS1210U/1KG4 support?
The device supports a flexible SPI-compatible interface with both self-clocked (Master Mode) and externally clocked (Slave Mode) operations.
- Does the ADS1210U/1KG4 have on-chip calibration capabilities?
Yes, it includes on-chip self-calibration to correct for internal offset and gain errors.
- What are the typical applications of the ADS1210U/1KG4?
It is used in smart transmitters, industrial process control, weigh scales, chromatography, and portable instrumentation.
- What is the power supply voltage requirement for the ADS1210U/1KG4?
The power supply voltage is between 4.75V and 5.25V.
- What is the temperature range for the ADS1210U/1KG4?
The specified temperature range is from -40°C to +85°C, and the storage temperature range is from -60°C to +125°C.
- Does the ADS1210U/1KG4 support both internal and external references?
Yes, it supports both internal and external references.
