LTC2500-32 - 32-Bit Over-Sampling ADC with Configurable Digital Filter


  • ±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

Typical Application

LTC2500-32 Typical Application
LTC2500-32 Typical Application


The LTC®2500-32 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 SPIcompatible 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.


For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
LTC2500CDKD-32#PBF 7x4 DFN-24 DKD C 05-08-1864 Yes
LTC2500CDKD-32#TRPBF 7x4 DFN-24 DKD C 05-08-1864 Yes
LTC2500IDKD-32#PBF 7x4 DFN-24 DKD I 05-08-1864 Yes
LTC2500IDKD-32#TRPBF 7x4 DFN-24 DKD I 05-08-1864 Yes

LTC2500-32 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
LTC2500CDKD-32#PBF 7x4 DFN-24 C $51.36 $35.95 Yes
LTC2500CDKD-32#TRPBF 7x4 DFN-24 C $51.42 $36.01 Yes
LTC2500IDKD-32#PBF 7x4 DFN-24 I $57.07 $39.95 Yes
LTC2500IDKD-32#TRPBF 7x4 DFN-24 I $57.13 $40.01 Yes
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC2222A-A LTC2500-32 Demo Board | 32-Bit Over-Sampling ADC with Configurable Digital Filter (req DC590, DC2026 or DC890) $200.00
DC2390A-A LTC2500-32 Demo Board | 32-Bit Over-Sampling ADC Multi-Application Demoboard (req ArrowSoCKIT) $300.00
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Companion Boards

Part Number Description Price Documentation
DC2026C Linduino One Isolated USB Demo Board: An Arduino- and QuikEval-Compatible Code Development Platform $75.00
DC590B Isolated USB Serial Controller for Linear Technology QuikEval-Compatible Demo Boards $50.00
DC890B USB Data Acquisition Controller, for PScope Evaluation Kits (up to 250Mbps, CMOS/LVDS) $300.00
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Linear Technology provides a variety of custom design simulation tools and device models to allow even novice designers to quickly and easily evaluate circuits using high performance switching regulators, amplifiers, data converters, filters and more. Please visit our Design Tools page to view and download:

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