LTC2172-12 - 12-Bit, 65Msps Low Power Quad ADCs

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.

Features
  • 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
Typical Application

Applications
  • Communications
  • Cellular Base Stations
  • Software Defined Radios
  • Portable Medical Imaging
  • Multichannel Data Acquisition
  • Nondestructive Testing
Packaging
Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LTC2172CUKG-12#PBF7x8 QFN-52C$45.26$31.68
LTC2172CUKG-12#TRPBF7x8 QFN-52C$31.78
LTC2172IUKG-12#PBF7x8 QFN-52I$49.78$34.85
LTC2172IUKG-12#TRPBF7x8 QFN-52I$34.95
Demo Boards
Part NumberDescriptionPrice
DC1525A-JLTC2172-12 | 12-Bit, 65Msps, 1.8V Quad Serial ADC, 5MHz < Ain < 170MHz, req DC1371 and DC1075$200.00
Companion Boards
Part NumberDescriptionPrice
DC1075AClock Divider board$50.00
DC1371BFMC High-Speed Data Acquisition Board$1,950.00
Datasheet
Reliability Data
Product Selector Card
Software and Simulation
Related Product
LTC2172-12/ LTC2171-12/LTC2170-12 - 12-Bit, 65Msps/40Msps/ 25Msps Low Power Quad ADCs
R538 - Reliability Data
14-Bit/12-Bit 125Msps Quad/Dual ADC Family
High Speed Amplifiers/ADC Drivers
LTC2175/4/3/2/1/0 IBIS Model
LTC2172-12 Footprints and Symbols