LTC2500-32
PRODUCTION32-Bit Over-Sampling ADC with Configurable Digital Filter
- Part Models
- 4
- 1ku List Price
- Starting From $42.38
Part Details
- ±0.5ppm INL (Typ)
- 104dB SNR (Typ) at 1Msps
- 148dB Dynamic Range (Typ) at 61sps
- Guaranteed 32-Bit No Missing Codes
- Configurable Digital Filter with Synchronization
- Relaxed Anti-Aliasing Filter Requirements
- Dual Output 32-Bit SAR ADC
- 32-Bit Digitally Filtered Low Noise Output
- 24-Bit Differential + 7-Bit Common Mode 1Msps Output with Overrange Detection
- Wide Input Common-Mode Range
- Guaranteed Operation to 85°C
- 1.8V to 5V SPI-Compatible Serial I/O
- Low Power: 24mW at 1Msps
- 24-Lead 7mm × 4mm DFN Packages
The LTC2500-32 is a low noise, low power, high performance 32-bit ADC with an integrated configurable digital filter. Operating from a single 2.5V supply, the LTC2500-32 features a fully differential input range up to ±VREF, with VREF ranging from 2.5V to 5.1V. The LTC2500-32 supports a wide common mode range from 0V to VREF simplifying analog signal conditioning requirements.
The LTC2500-32 simultaneously provides two output codes: (1) a 32-bit digitally filtered high precision low noise code, and (2) a 32-bit no latency composite code. The configurable digital filter reduces measurement noise by lowpass filtering and downsampling the stream of data from the SAR ADC core, giving the 32-bit filtered output code. The 32-bit composite code consists of an overrange detection bit, a 24-bit code representing the differential input voltage and a 7-bit code representing the common mode input voltage. The 32-bit composite code is available each conversion cycle, with no cycle of latency.
The digital filter is highly configurable through the SPI-compatible interface and features many distinct filter types that suit a variety of applications. The digital lowpass filter relaxes the requirements for analog anti-aliasing. Multiple LTC2500-32 devices can be easily synchronized using the SYNC pin.
Applications
- Seismology
- Energy Exploration
- Automatic Test Equipment
- High Accuracy Instrumentation
Documentation
Data Sheet 1
Reliability Data 1
User Guide 2
Technical Articles 1
Video 1
3rd Party Solutions 1
Rarely Asked Question Page 1
Analog Dialogue 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC2500CDKD-32#PBF | 24-Lead DFN (7mm x 4mm w/ EP) | ||
| LTC2500CDKD-32#TRPBF | 24-Lead DFN (7mm x 4mm w/ EP) | ||
| LTC2500IDKD-32#PBF | 24-Lead DFN (7mm x 4mm w/ EP) | ||
| LTC2500IDKD-32#TRPBF | 24-Lead DFN (7mm x 4mm w/ EP) |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Evaluation Software 2
LinearLab Tools
A collection of Matlab and Python programs that provide direct access to Linear Technology’s data converter evaluation boards.
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Tools & Simulations
Precision ADC Driver Tool
The Precision ADC Driver Tool is a web application that simulates the performance of precision ADC and driver combinations. Potential issues with driver selection, kickback settling, and distortion are flagged, and design tradeoffs can be quickly evaluated. Simulations and calculations include system noise, distortion, and settling of the ADC input
Open Tool
