LTC2508-32
PRODUCTION32-Bit Over-Sampling ADC with Configurable Digital Filter
- Part Models
- 4
- 1ku List Price
- Starting From $10.60
Overview
- ±0.5ppm INL (Typ)
- 145dB Dynamic Range (Typ) at 61sps
- 131dB Dynamic Range (Typ) at 4ksps
- Guaranteed 32-Bits 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
- 14-Bit Differential + 8-Bit Common Mode 1Msps No Latency Output
- 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 Package
The LTC2508-32 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 LTC2508-32 features a fully differential input range up to ±VREF , with VREF ranging from 2.5V to 5.1V. The LTC2508-32 supports a wide common mode range from 0V to VREF simplifying analog signal conditioning requirements.
The LTC2508-32 simultaneously provides two output codes: (1) a 32-bit digitally filtered high precision low noise code, and (2) a 22-bit no latency composite code. The configurable digital filter reduces measurement noise by lowpass filtering and down-sampling the stream of data from the SAR ADC core, giving the 32-bit filtered output code. The 22-bit composite code consists of a 14-bit code representing the differential voltage and an 8-bit code representing the common mode voltage. The 22-bit composite code is available each conversion cycle, with no cycle of latency.
The digital filter can be easily configured for 4 different down-sampling factors by pin strapping. The configurations provide a dynamic range of 131dB at 3.9ksps and 145dB at 61sps. The digital lowpass filter relaxes the requirements for analog anti-aliasing. Multiple LTC2508-32 devices can be easily synchronized using the SYNC pin.
Applications
- Seismology
- Energy Exploration
- Automated Test Equipment (ATE)
- High-Accuracy Instrumentation
Documentation
Data Sheet 1
Reliability Data 1
User Guide 1
Design Note 1
Technical Articles 2
Product Selector Card 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 |
|---|---|---|---|
| LTC2508CDKD-32#PBF | 24-Lead DFN (7mm x 4mm w/ EP) | ||
| LTC2508CDKD-32#TRPBF | 24-Lead DFN (7mm x 4mm w/ EP) | ||
| LTC2508IDKD-32#PBF | 24-Lead DFN (7mm x 4mm w/ EP) | ||
| LTC2508IDKD-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.
Can't find the software or driver you need?
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Analog to Digital Converters (ADCs) 1 | ||
| LTC2512-24 | PRODUCTION | 24-Bit Over-Sampling ADC with Configurable Flat Passband Digital Filter |
| Differential Amplifiers 1 | ||
| LTC6363 | LAST TIME BUY | Precision, Low Power Differential Amplifier/ADC Driver Family |
| Operational Amplifiers (Op Amps) 1 | ||
|
LTC2057 LTC2057HV |
High Voltage, Low Noise Zero-Drift Operational Amplifier | |
| Voltage References 1 | ||
| LTC6655 | PRODUCTION | 0.25ppm Noise, Low Drift Precision References |
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 ToolLinduino 3
Software and Simulation 1
Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits. Each Linduino-supported product includes an example main program, defined in the LTSketchbook/Part Number folder and driver code, defined in the LTSketchbook/libraries folder.
Linduino code repository on GitHub and instructions on how to use the code.
Evaluation Kits
LTC2508-32 Demo Board | 32-Bit Over-Sampling ADC with Configurable Digital Filter (Requires DC590, DC2026 or DC890)
Resources
Software
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