Overview
The ADS1256IDBR, produced by Texas Instruments, is a highly advanced 24-bit analog-to-digital converter (ADC) designed for demanding applications such as factory automation and process control. This delta-sigma ADC offers exceptional low-noise performance and high-resolution measurement capabilities. It features a 4th-order delta-sigma modulator followed by a programmable digital filter, allowing users to optimize between resolution and data rate. The device supports both differential and single-ended inputs and includes a flexible input multiplexer with sensor detect functionality.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 24 bits |
| Sampling Rate | Up to 30 kSPS |
| Input Channels | Four differential or eight single-ended |
| Nonlinearity | ±0.0010% (max) |
| Noise-Free Resolution | Up to 23 bits |
| PGA Gain | 1 to 64 in binary steps |
| Analog Supply Voltage | 5V |
| Digital Supply Voltage | 1.8V to 3.6V |
| Power Dissipation | As low as 38mW in normal mode, 0.4mW in standby mode |
| Package | SSOP-28 |
| Operating Temperature Range | -40°C to 85°C |
Key Features
- 24 bits, no missing codes
- Up to 23 bits noise-free resolution
- ±0.0010% nonlinearity (max)
- Data output rates up to 30 kSPS
- Fast channel cycling and one-shot conversions with single-cycle settling
- Flexible input multiplexer with sensor detect
- Chopper-stabilized input buffer and low-noise PGA with 27nV input-referred noise
- Self and system calibration for all PGA settings
- 5V tolerant SPI-compatible serial interface
- Bidirectional digital I/Os and programmable clock output driver
Applications
The ADS1256IDBR is ideal for various high-resolution measurement applications, including:
- Factory automation
- Process control
- Industrial measurement systems
- Medical devices requiring high precision
- Scientific instruments
Q & A
- What is the resolution of the ADS1256IDBR?
The ADS1256IDBR has a resolution of 24 bits.
- What is the maximum sampling rate of the ADS1256IDBR?
The maximum sampling rate is up to 30 kSPS.
- How many input channels does the ADS1256IDBR support?
The device supports four differential or eight single-ended input channels.
- What is the nonlinearity of the ADS1256IDBR?
The nonlinearity is ±0.0010% (max).
- What is the power dissipation of the ADS1256IDBR in normal and standby modes?
The power dissipation is as low as 38mW in normal mode and 0.4mW in standby mode.
- What type of package does the ADS1256IDBR come in?
The device is packaged in an SSOP-28.
- What is the operating temperature range of the ADS1256IDBR?
The operating temperature range is -40°C to 85°C.
- Does the ADS1256IDBR support self and system calibration?
- What type of serial interface does the ADS1256IDBR use?
The device uses a 5V tolerant SPI-compatible serial interface.
- Are there any general-purpose digital I/Os available on the ADS1256IDBR?
