Overview
The ADS1244IDGSTG4, produced by Texas Instruments, is a 24-bit, low-power, delta-sigma Analog-to-Digital (A/D) converter. It is designed for high-resolution measurements, particularly in portable and space- and power-constrained systems. The converter features a 3rd-order delta-sigma modulator and a digital filter, providing excellent performance with very low power consumption. It is packaged in an MSOP-10 package and supports both differential and single-ended input signals.
Key Specifications
| Specification | Value | Units |
|---|---|---|
| Resolution | 24 bits | |
| Data Rate | 15 samples per second (at fCLK = 2.4576MHz) | sps |
| Integral Nonlinearity (INL) | ±0.0002% (typ), ±0.0008% (max) | % FSR |
| Offset Error | 1 ppm of FSR | |
| Gain Error | 0.005% to 0.02% | |
| Analog Supply Voltage | 2.5V to 5.25V | V |
| Digital Supply Voltage | 1.8V to 3.6V | V |
| Differential Input Range | ±5V | V |
| Power Consumption (Normal Operation) | < 270µW | µW |
| Power Consumption (Sleep Mode) | < 1µW | µW |
Key Features
- Low power consumption: Typically less than 270µW in normal operation and less than 1µW in Sleep Mode.
- High resolution: 24-bit effective resolution with no missing codes.
- Simple 2-wire serial interface for data retrieval and control.
- Simultaneous 50Hz and 60Hz rejection with single-cycle settling.
- Self-calibration capability to minimize offset and gain errors.
- Support for single conversions with Sleep Mode to reduce power dissipation.
- Easily connects to microcontrollers such as the MSP430.
- Well-suited for multichannel measurement systems.
Applications
The ADS1244IDGSTG4 is well-suited for a variety of applications, including:
- Portable and battery-powered devices due to its low power consumption.
- High-resolution measurement systems requiring precise analog-to-digital conversion.
- Medical devices, industrial automation, and scientific instruments where high accuracy and low noise are critical.
- Multichannel measurement systems where synchronous sampling is necessary.
Q & A
- What is the resolution of the ADS1244IDGSTG4?
The ADS1244IDGSTG4 has a 24-bit resolution.
- What is the typical power consumption of the ADS1244IDGSTG4 in normal operation?
The typical power consumption is less than 270µW.
- What is the differential input range of the ADS1244IDGSTG4?
The differential input range is ±5V.
- Does the ADS1244IDGSTG4 support self-calibration?
- How does the ADS1244IDGSTG4 handle 50Hz and 60Hz noise?
The digital filter rejects both 50Hz and 60Hz signals while settling in a single conversion cycle.
- What is the data rate of the ADS1244IDGSTG4 at the recommended clock frequency?
The data rate is 15 samples per second at fCLK = 2.4576MHz.
- Can the ADS1244IDGSTG4 be used in multichannel measurement systems?
- How does the ADS1244IDGSTG4 reduce power consumption during idle periods?
- What type of interface does the ADS1244IDGSTG4 use for data retrieval and control?
- Is the ADS1244IDGSTG4 compatible with microcontrollers like the MSP430?
