Overview
The ADS1255IDBTG4, produced by Texas Instruments, is an extremely low-noise, 24-bit analog-to-digital (A/D) converter. It provides a complete high-resolution measurement solution for the most demanding applications. The converter utilizes a 4th-order, delta-sigma (ΔΣ) modulator followed by a programmable digital filter, ensuring high accuracy and flexibility. It features a flexible input multiplexer that handles both differential and single-ended signals, along with a low-noise programmable gain amplifier (PGA) and onboard calibration for self and system correction of offset and gain errors.
Key Specifications
| Specification | Value |
|---|---|
| Number of Bits | 24 |
| Sampling Rate (Per Second) | Up to 30k SPS |
| Number of Inputs | 1 or 2 |
| Input Type | Differential, Single-Ended |
| Data Interface | SPI-Compatible Serial Interface |
| Architecture | Sigma-Delta |
| Reference Type | External |
| Analog Supply Voltage | 5V |
| Digital Supply Voltage | 1.8V to 3.6V |
| Operating Temperature Range | -40°C to 85°C |
| Package Type | 20-SSOP (Surface Mount) |
| Power Dissipation | As low as 38mW in Normal Mode, 0.4mW in Standby Mode |
Key Features
- 24 Bits, No Missing Codes
- Up to 23 Bits Noise-Free Resolution
- ±0.0010% Nonlinearity (max)
- Data Output Rates to 30k SPS
- Fast Channel Cycling
- One-Shot Conversions with Single-Cycle Settling
- Flexible Input Multiplexer with Sensor Detect
- Chopper-Stabilized Input Buffer
- Low-Noise PGA: 27nV Input-Referred Noise
- Self and System Calibration for All PGA Settings
- 5V Tolerant SPI-Compatible Serial Interface
Applications
- Scientific Instrumentation
- Industrial Process Control
- Medical Equipment
- Test and Measurement
- Weigh Scales
Q & A
- What is the resolution of the ADS1255IDBTG4? The ADS1255IDBTG4 has a resolution of 24 bits with up to 23 bits noise-free resolution.
- What are the sampling rates available for the ADS1255IDBTG4? The sampling rates range from 2.5 to 30,000 samples per second (SPS).
- What types of inputs does the ADS1255IDBTG4 support? It supports both differential and single-ended inputs.
- What is the power consumption of the ADS1255IDBTG4? The power dissipation is as low as 38mW in normal mode and 0.4mW in standby mode.
- What is the operating temperature range of the ADS1255IDBTG4? The operating temperature range is -40°C to 85°C.
- What is the package type of the ADS1255IDBTG4? It is packaged in a 20-SSOP (Surface Mount).
- Does the ADS1255IDBTG4 support onboard calibration? Yes, it supports self and system calibration for all PGA settings.
- What is the input-referred noise of the PGA in the ADS1255IDBTG4? The low-noise PGA has an input-referred noise of 27nV.
- What communication interface does the ADS1255IDBTG4 use? It uses an SPI-compatible serial interface.
- Is the ADS1255IDBTG4 RoHS compliant? Yes, it is RoHS compliant.
