LTC2257-14
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LTC2257-14

14-Bit, 40Msps Ultralow Power 1.8V ADCs

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 4
1ku List Price Starting From $22.99
Features
  • 74dB SNR
  • 88dB SFDR
  • Low Power: 81mW/49mW/35mW
  • Single 1.8V Supply
  • CMOS, DDR CMOS or DDR LVDS Outputs
  • Selectable Input Ranges: 1VP-P to 2VP-P
  • 800MHz Full-Power Bandwidth S/H
  • Optional Data Output Randomizer
  • Optional Clock Duty Cycle Stabilizer
  • Shutdown and Nap Modes
  • Serial SPI Port for Configuration
  • Pin Compatible 14-Bit and 12-Bit Versions
  • 40-Pin (6mm × 6mm) QFN Package
Additional Details
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The LTC2258-14/LTC2257-14/LTC2256-14 are sampling 14-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 74dB SNR and 88dB spurious free dynamic range (SFDR). Ultralow jitter of 0.17psRMS allows undersampling of IF frequencies with excellent noise performance.

DC specs include ±1LSB INL (typical), ±0.3LSB DNL (typical) and no missing codes over temperature. The transition noise is a low 1.13LSBRMS.

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.


Bits
LTC2257-12 12
LTC2257-14 14

Applications

  • Communications
  • Cellular Base Stations
  • Software Defined Radios
  • Portable Medical Imaging
  • Multi-Channel Data Acquisition
  • Nondestructive Testing
Part Models 4
1ku List Price Starting From $22.99

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC2257CUJ-14#PBF
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Software & Part Ecosystem

Software & Part Ecosystem

 
LinearLab Tools
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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

Evaluation Kits 2

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DC1369A-E

LTC2257-14 | 14-bit 40Msps ADC, LVDS Outputs, 5-170MHz, Requires DC890, LVDS_XFMR and DC1075

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DC1370A-E

LTC2257-14 |14-Bit, 40Msps ADC, CMOS Outputs, 5-170MHz, Requires DC890 and DC1075

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