Overview
The LTC2500CDKD-32#PBF, produced by Analog Devices Inc., is a high-performance 32-bit oversampling Analog-to-Digital Converter (ADC) with an integrated configurable digital filter. This device operates from a single 2.5V supply and is known for its low noise and low power consumption. It features a fully differential input range up to ±VREF, with VREF ranging from 2.5V to 5.1V, and supports a wide common mode range from 0V to VREF, simplifying analog signal conditioning requirements.
Key Specifications
| Parameter | Value | Notes |
|---|---|---|
| Resolution | 32 bits | |
| Supply Voltage | 2.5V | Single supply operation |
| Input Range | ±VREF (up to ±5.1V) | Fully differential input |
| Common Mode Range | 0V to VREF | |
| Output Codes | 32-bit filtered, 32-bit no latency composite | Includes overrange detection, differential input voltage, and common mode input voltage codes |
| Digital Filter | Configurable through SPI-compatible interface | Reduces measurement noise through lowpass filtering and downsampling |
| Package | 24-Lead DFN (7mm x 4mm) | |
| Operating Temperature | -40°C to 85°C |
Key Features
- Low noise and low power consumption, making it suitable for high-performance applications.
- Integrated configurable digital filter that reduces measurement noise through lowpass filtering and downsampling.
- Provides two output codes: a 32-bit digitally filtered high precision low noise code and a 32-bit no latency composite code.
- The 32-bit composite code includes an overrange detection bit, a 24-bit code representing the differential input voltage, and a 7-bit code representing the common mode input voltage.
- Digital filter is highly configurable through an SPI-compatible interface, featuring many distinct filter types.
- Supports synchronization of multiple devices using the SYNC pin.
- Relaxes the requirements for analog anti-aliasing due to the digital lowpass filter.
Applications
- High-resolution data acquisition systems.
- Industrial process control and monitoring.
- Aerospace and defense applications requiring high precision and low noise.
- Medical devices and diagnostic equipment.
- Test and measurement instruments.
- Demonstration circuits such as DC2390A and DC2222A for prototyping and evaluating key applications.
Q & A
- What is the resolution of the LTC2500CDKD-32#PBF ADC?
The resolution of the LTC2500CDKD-32#PBF is 32 bits.
- What is the operating supply voltage for this ADC?
The ADC operates from a single 2.5V supply.
- What is the input range of the LTC2500CDKD-32#PBF?
The input range is fully differential up to ±VREF, with VREF ranging from 2.5V to 5.1V.
- What types of output codes does the LTC2500CDKD-32#PBF provide?
The ADC provides a 32-bit digitally filtered high precision low noise code and a 32-bit no latency composite code.
- How is the digital filter configured in the LTC2500CDKD-32#PBF?
The digital filter is configurable through an SPI-compatible interface.
- Can multiple LTC2500CDKD-32#PBF devices be synchronized?
Yes, multiple devices can be easily synchronized using the SYNC pin.
- What is the package type and size of the LTC2500CDKD-32#PBF?
The package is a 24-Lead DFN (7mm x 4mm).
- What are some common applications of the LTC2500CDKD-32#PBF?
Common applications include high-resolution data acquisition systems, industrial process control, aerospace and defense, medical devices, and test and measurement instruments.
- How does the digital lowpass filter benefit the system?
The digital lowpass filter relaxes the requirements for analog anti-aliasing.
- What is included in the 32-bit composite code output?
The 32-bit composite code includes an overrange detection bit, a 24-bit code representing the differential input voltage, and a 7-bit code representing the common mode input voltage.
