12-Bit, 125Msps Low Power Dual ADCs

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Part Details
Part Models 4
1ku List Price Starting From $37.95
  • 2-Channel Simultaneously Sampling ADC
  • 70.6dB SNR
  • 89dB SFDR
  • Low Power: 183mW/144mW/109mW Total 92mW/72mW/55mW per Channel
  • Single 1.8V Supply
  • CMOS, DDR CMOS, or DDR LVDS Outputs
  • Selectable Input Ranges: 1VP-P to 2VP-P
  • 750MHz Full Power Bandwidth S/H
  • Optional Data Output Randomizer
  • Optional Clock Duty Cycle Stabilizer
  • Shutdown and Nap Modes
  • Serial SPI Port for Configuration
  • 64-Pin (9mm × 9mm) QFN Package
Additional Details
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The LTC2145-12/LTC2144-12/LTC2143-12 are 2-channel simultaneous sampling 12-bit A/D converters designed for digitizing high frequency, wide dynamic range signals. They are perfect for demanding communications applications with AC performance that includes 70.6dB SNR and 89dB spurious free dynamic range (SFDR). Ultralow jitter of 0.08psRMS allows undersampling of IF frequencies with excellent noise performance.

DC specs include ±0.3LSB INL (typ), ±0.1LSB DNL (typ) and no missing codes over temperature. The transition noise is 0.3LSBRMS.

The digital outputs can be either full rate CMOS, double data rate CMOS, or double data rate LVDS. A separate output power supply allows the CMOS output swing to range from 1.2V to 1.8V.

The ENC+ and ENC inputs may be driven differentially or single-ended 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.

LTC2145-12 12
LTC2145-14 14


  • Communications
  • Cellular Base Stations
  • Software Defined Radios
  • Portable Medical Imaging
  • Multi-Channel Data Acquisition
  • Nondestructive Testing
Part Models 4
1ku List Price Starting From $37.95

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Software & Part Ecosystem

Software & Part Ecosystem

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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Evaluation Kit

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LTC2145-12: 12-bit 125Msps Dual ADC, DDR LVDS Outputs, 5-140MHz, Requires DC890, LVDS_XFMR and DC1075

Tools & Simulations

Tools & Simulations 1

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