LTC2158-14 - Dual 14-Bit 310Msps ADC


  • 68.8dBFS SNR
  • 88dB SFDR
  • Low Power: 724mW Total
  • Single 1.8V Supply
  • DDR LVDS Outputs
  • Easy-to-Drive 1.32VP-P Input Range
  • 1.25GHz Full Power Bandwidth S/H
  • Optional Clock Duty Cycle Stabilizer
  • Low Power Sleep and Nap Modes
  • Serial SPI Port for Configuration
  • Pin-Compatible 12-Bit Version
  • 64-Lead (9mm × 9mm) QFN Package
This Product is subject to United States Export Control and may require a license for export to certain countries

Typical Application

LTC2158-14 Typical Application
LTC2158-14 Typical Application


The LTC®2158-14 is a 2-channel simultaneous sampling 310Msps 14-bit A/D converter designed for digitizing high frequency, wide dynamic range signals. It is perfect for demanding communications applications with AC performance that includes 68.8dB SNR and 88dB spurious free dynamic range (SFDR). The 1.25GHz input bandwidth allows the ADC to undersample high frequencies with good performance. The latency is only five clock cycles.

DC specs include ±1.2LSB INL (typ), ±0.35LSB DNL (typ) and no missing codes over temperature. The transition noise is 2.11LSBRMS.

The digital outputs are double data rate (DDR) LVDS.

The ENC+ and ENC inputs can be driven differentially with a sine wave, PECL, LVDS, TTL, or CMOS inputs. An optional clock duty cycle stabilizer allows high performance at full speed for a wide range of clock duty cycles.

LTC2158-12 12
LTC2158-14 14


CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

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

Part Number Package Code Temp Package
LTC2158CUP-14#PBF 9x9 QFN-64 UP C 05-08-1705 Yes
LTC2158CUP-14#TRPBF 9x9 QFN-64 UP C 05-08-1705 Yes
LTC2158IUP-14#PBF 9x9 QFN-64 UP I 05-08-1705 Yes
LTC2158IUP-14#TRPBF 9x9 QFN-64 UP I 05-08-1705 Yes

LTC2158-14 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
LTC2158CUP-14#PBF 9x9 QFN-64 C $209.07 $146.35 Yes
LTC2158CUP-14#TRPBF 9x9 QFN-64 C $146.41 Yes
LTC2158IUP-14#PBF 9x9 QFN-64 I $240.43 $168.30 Yes
LTC2158IUP-14#TRPBF 9x9 QFN-64 I $168.36 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
DC1564A-G LTC2158-14: 14-bit, 310Msps, 1.8V Dual ADC, DDR LVDS Outputs, 5-140MHz, req DC1371 $250.00
DC1946A LTC6430-15 with LTC2158-14 Combo Demoboard | 15dB IF Amplifier with 14-bit 310Msps Dual ADC, req DC1371 $250.00
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Companion Boards

Part Number Description Price Documentation
DC1371B FMC High-Speed Data Acquisition Board $1,950.00
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Click here to view our complete list of demo boards


  • Communications
  • Cellular Basestations
  • Software Defined Radios
  • Medical Imaging
  • High Definition Video
  • Testing and Measurement Instruments

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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!

Linear Technology provides reference code for receiving data from our high speed parallel DDR LVDS interface ADCs  ADCs with the Altera Stratix IV FPGA development board EP4SGX230KF40C2N

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