LTC2512-24 - 24-Bit Over-Sampling ADC with Configurable Flat Passband Digital Filter

Features

  • ±1ppm INL (Typ)
  • 117dB Dynamic Range (Typ) at 50ksps
  • 108dB Dynamic Range (Typ) at 400ksps
  • Guaranteed 24-Bits No Missing Codes
  • Configurable Digital Filter with Synchronization
    • Relaxed Anti-Aliasing Filter Requirements
  • Dual Output 24-Bit SAR ADC
    • 24-Bit Digitally Filtered Low Noise Output
    • 14-Bit Differential + 8-Bit Common Mode No Latency Output
  • Wide Input Common-Mode Range
  • Guaranteed Operation to 85°C
  • 1.8V to 5V SPI-Compatible Serial I/O
  • Low Power: 30mW at 1.6Msps
  • 24-Lead 7mm × 4mm DFN Package

Typical Application

LTC2512-24 Typical Application
LTC2512-24 Typical Application

Description

The LTC®2512-24 is a low noise, low power, high-performance 24-bit ADC with an integrated configurable digital filter. Operating from a single 2.5V supply, the LTC2512-24 features a fully differential input range up to ±VREF, with VREF ranging from 2.5V to 5.1V. The LTC2512-24 supports a wide common mode range from 0V to VREF simplifying analog signal conditioning requirements.

The LTC2512-24 simultaneously provides two output codes: (1) a 24-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 24-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 108dB at 400ksps and 117dB at 50ksps. The digital lowpass filter relaxes the requirements for analog anti-aliasing. Multiple LTC2512-24 devices can be easily synchronized using the SYNC pin.

Packaging

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

Part Number Package Code Temp Package
Drawing
RoHS
LTC2512CDKD-24#PBF 7x4 DFN-24 DKD C 05-08-1864 Yes
LTC2512CDKD-24#TRPBF 7x4 DFN-24 DKD C 05-08-1864 Yes
LTC2512IDKD-24#PBF 7x4 DFN-24 DKD I 05-08-1864 Yes
LTC2512IDKD-24#TRPBF 7x4 DFN-24 DKD I 05-08-1864 Yes


LTC2512-24 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
(1-99)
Price
(1k)*
RoHS
LTC2512CDKD-24#PBF 7x4 DFN-24 C $14.21 $9.95 Yes
LTC2512CDKD-24#TRPBF 7x4 DFN-24 C $14.27 $10.01 Yes
LTC2512IDKD-24#PBF 7x4 DFN-24 I $16.34 $11.44 Yes
LTC2512IDKD-24#TRPBF 7x4 DFN-24 I $16.40 $11.50 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-C LTC2512-24 Demo Board | 24-Bit Over-Sampling ADC with Configurable Digital Filter (req DC590, DC2026 or DC890) $200.00
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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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Click here to view our complete list of demo boards

Applications

  • Seismology
  • Energy Exploration
  • Automated Test Equipment (ATE)
  • High-Accuracy Instrumentation

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Design Tools

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:

  • LTspice - A powerful SPICE simulator, schematic capture and waveform viewer with enhancements and models for easing the simulation of switching regulators
  • LTpowerCAD - A complete power supply selection, synthesis and design tool
  • LTpowerPlay - A development environment supporting Linear Technology's Digital Power System Management (PSM) products
  • PScope & QuikEval - USB-based product demonstration and data acquisition system for use with our ADCs, DACs, and more
  • Linduino - Arduino compatible system for developing and distributing firmware libraries and example code
  • LinearLab Tools - A collection of Matlab and Python programs that provide direct access to Linear Technology’s data converter evaluation boards
  • And More!

Technical Support