LTC2141-14

PRODUCTION

14-Bit, 40Msps Low Power Dual ADCs

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Overview

  • Two-Channel Simultaneously Sampling ADC
  • 73.2dB SNR
  • 90dB SFDR
  • Low Power: 95mW/67mW/50mW Total 48mW/34mW/25mW 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

The LTC2142-14/LTC2141-14/LTC2140-14 are 2-channel simultaneous 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 73.2dB SNR and 90dB spurious free dynamic range (SFDR). Ultralow jitter of 0.08psRMS allows undersampling of IF frequencies with excellent noise performance.

DC specs include ±1LSB INL (typ), ±0.3LSB DNL (typ) and no missing codes over temperature. The transition noise is 1.2LSBRMS.

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
LTC2141-12 12
LTC2141-14 14

Applications

  • Communications
  • Cellular Base Stations
  • Software Defined Radios
  • Portable Medical Imaging
  • Multi-Channel Data Acquisition
  • Nondestructive Testing
LTC2141-14
14-Bit, 40Msps Low Power Dual ADCs
2-Tone FFT, fIN = 70MHz and 69MHz Product Package 1 Product Package 2 Product Package 3
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Data Sheet

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

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Software Resources

Evaluation Software 1

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 2
LTC6406
LAST TIME BUY 3GHz, Low Noise, Rail-to-Rail Input Differential Amplifier/Driver
LTC6409
RECOMMENDED FOR NEW DESIGNS 10GHz GBW, 1.1nV/√Hz Differential Amplifier/ADC Driver
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

IBIS Model 1

Evaluation Kits

eval board
schematic 1
DC1620A-K

LTC2141-14: 14-bit 40Msps Dual ADC, DDR LVDS Outputs, 5-140MHz, Requires DC890, LVDS_XFMR and DC1075

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Product Details

DC1620A-K: Demo Board for LTC2141-14 14-Bit, 40Msps Low Power Dual ADCs.
DC1620A-K
LTC2141-14: 14-bit 40Msps Dual ADC, DDR LVDS Outputs, 5-140MHz, Requires DC890, LVDS_XFMR and DC1075
DC1620A-A - Schematic

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