LTC2171-12

PRODUCTION

12-Bit, 40Msps Low Power Quad ADCs

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Overview

  • 4-Channel Simultaneous Sampling ADC
  • 71dB SNR
  • 90dB SFDR
  • Low Power: 306mW/198mW/160mW Total, 77mW/50mW/40mW per Channel
  • Single 1.8V Supply
  • Serial LVDS Outputs: One or Two Bits per Channel
  • Selectable Input Ranges: 1VP-P to 2VP-P
  • 800MHz Full Power Bandwidth Sample-and-Hold
  • Shutdown and Nap Modes
  • Serial SPI Port for Configuration
  • Pin-Compatible 14-Bit and 12-Bit Versions
  • 52-Pin (7mm × 8mm) QFN Package

The LTC2172-12/LTC2171-12/LTC2170-12 are 4-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 71dB SNR and 90dB spurious free dynamic range (SFDR). An ultralow jitter of 0.15psRMS allows undersampling of IF frequencies with excellent noise performance.

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

The digital outputs are serial LVDS to minimize the number of data lines. Each channel outputs two bits at a time (2-lane mode) or one bit at a time (1-lane mode). The LVDS drivers have optional internal termination and adjustable output levels to ensure clean signal integrity.

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

Bits
LTC2171-12 12
LTC2171-14 14

Applications

  • Communications
  • Cellular Base Stations
  • Software Defined Radios
  • Portable Medical Imaging
  • Multichannel Data Acquisition
  • Nondestructive Testing
LTC2171-12
12-Bit, 40Msps Low Power Quad ADCs
LTC2172-12, 65Msps, 2-Tone FFT, fIN = 70MHz and 75MHz Product Package 1
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Technical Articles 1

Data Sheet

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

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Differential Amplifiers 1
LTC6406
LAST TIME BUY 3GHz, Low Noise, Rail-to-Rail Input Differential Amplifier/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
DC1525A-K

LTC2171-12 | 12-Bit, 40Msps, 1.8V Quad Serial ADC, 5MHz < AIN < 170MHz, Requires DC1371 and DC1075

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Product Details

DC1525A-K: Demo Board for the LTC2171-12 12-Bit, 40Msps Low Power Quad ADCs.
DC1525A-K
LTC2171-12 | 12-Bit, 40Msps, 1.8V Quad Serial ADC, 5MHz < AIN < 170MHz, Requires DC1371 and DC1075
DC1525A-A - Schematic

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