LTC2254

PRODUCTION

14-Bit, 105Msps Low Power 3V ADCs

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Overview

  • Sample Rate: 125Msps/105Msps
  • Single 3V Supply (2.85V to 3.4V)
  • Low Power: 395mW/320mW
  • 72.4dB SNR
  • 88dB SFDR
  • No Missing Codes
  • Flexible Input: 1VP-P to 2VP-P Range
  • 640MHz Full Power Bandwidth S/H
  • Clock Duty Cycle Stabilizer
  • Shutdown and Nap Modes
  • Pin Compatible Family
    • 125Msps: LTC2253 (12-Bit), LTC2255 (14-Bit)
    • 105Msps: LTC2252 (12-Bit), LTC2254 (14-Bit)
    • 80Msps: LTC2229 (12-Bit), LTC2249 (14-Bit)
    • 65Msps: LTC2228 (12-Bit), LTC2248 (14-Bit)
    • 40Msps: LTC2227 (12-Bit), LTC2247 (14-Bit)
    • 25Msps: LTC2226 (12-Bit), LTC2246 (14-Bit)
    • 10Msps: LTC2225 (12-Bit), LTC2245 (14-Bit)
  • 32-Pin (5mm × 5mm) QFN Package

The LTC2255/LTC2254 are 14-bit 125Msps/105Msps, low power 3V A/D converters designed for digitizing high frequency, wide dynamic range signals. The LTC2255/ LTC2254 are perfect for demanding imaging and communications applications with AC performance that includes 72.3dB SNR and 85dB SFDR for signals at the Nyquist frequency.

DC specs include ±1LSB INL (typ), ±0.5LSB DNL (typ) and no missing codes over temperature. The transition noise is a low 1.3 LSBRMS.

A single 3V supply allows low power operation. A separate output supply allows the outputs to drive 0.5V to 3.3V logic.

A single-ended CLK input controls converter operation. An optional clock duty cycle stabilizer allows high performance at full speed for a wide range of clock duty cycles.

Applications

  • Wireless and Wired Broadband Communication
  • Imaging Systems
  • Ultrasound
  • Spectral Analysis
  • Portable Instrumentation

LTC2254
14-Bit, 105Msps Low Power 3V ADCs
LTC2255: SNR vs Input Frequency, –1dB, 2V Range, 125Msps Product Package 1
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Documentation

Data Sheet

This is the most up-to-date revision of the Data Sheet.

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Software Resources

Evaluation Software 2

PScope

The PScope System is a USB-based product demonstration and data acquisition system for use with high performance ADCs and signal chain receiver family. PScope allows users to evaluate the SNR, SFDR, THD, as well as other key parameters, quickly and easily.

LinearLab Tools

A collection of Matlab and Python programs that provide direct access to Linear Technology’s data converter evaluation boards.


Hardware Ecosystem

Parts Product Life Cycle Description
Differential Amplifiers 1
LTC6401-20 LAST TIME BUY 1.3GHz Low Noise, Low Distortion Differential ADC Driver for 140MHz IF
Phase-Locked Loop (PLL) Synthesizers 1
LTC6946 LAST TIME BUY Ultralow Noise and Spurious 0.37GHz to 6.39GHz Integer-N Synthesizer with Integrated VCO
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Tools & Simulations


Evaluation Kits

eval board
DC900A-01U

Combo Demo Board for LTC2254 and LT1993-2 (6dB) Requires DC718

Product Details

DC900A-01U Demo Board for:
LT1993-2 800MHz Low Distortion, Low Noise Differential Amplifier ADC Driver (Av = 2V/V)
LTC2254 14-Bit, 105Msps Low Power 3V ADCs

eval board
DC782A-T

LTC2254IUH | High Speed ADC, VDD = +3.0V, 105Msps, 14-Bit 10MHz < AIN < 170MHz, Requires DC718

Product Details

DC782A-T: Demo Board for the LTC2254 14-Bit, 105Msps Low Power 3V ADCs.

 


DC900A-01U
Combo Demo Board for LTC2254 and LT1993-2 (6dB) Requires DC718
DC900A-01E - Schematic
DC782A-T
LTC2254IUH | High Speed ADC, VDD = +3.0V, 105Msps, 14-Bit 10MHz < AIN < 170MHz, Requires DC718
DC782A-A - Schematic

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