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LTC2156-12 - Dual 12-Bit 210Msps ADC

Datasheet

Documentation

Software and Simulation

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LTC2156-12 Footprints and Symbols

White Paper

WP02 - Interfacing Linear Technology’s DDR LVDS ADCs to an Altera Stratix IV FPGA

Overview

Features

68.5dB SNR
90dB SFDR
Low Power: 628mW/592mW/545mW Total
Single 1.8V Supply
DDR LVDS Outputs
Easy-to-Drive 1.5V_P-P Input Range
1.25GHz Full-Power Bandwidth S/H
Optional Clock Duty Cycle Stabilizer
Low Power Sleep and Nap Modes
Serial SPI Port for Configuration
Pin Compatible 14-Bit Versions
64-Lead (9mm × 9mm) QFN Package

Typical Application

Description

The LTC®2157-12/LTC2156-12/LTC2155-12 are a family of dual 250Msps/210Msps/170Msps 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 68.5dB SNR and 90dB spurious free dynamic range (SFDR). The 1.25GHz input bandwidth allows the ADC to achieve high undersampling ratio with very low attenuation. The latency is only five clock cycles.

DC specs include ±0.26LSB INL (typ), ±0.16LSB DNL (typ) and no missing codes over temperature. The transition noise is 0.54LSB_RMS.

The digital outputs are double data rate (DDR) LVDS.

The ENC⁺ and ENC^– inputs can be driven differentially 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
LTC2156-12	12
LTC2156-14	14

Packaging

9x9 QFN-64

Order Info

Package Variations and Pricing

Part Number	Package	Pins	Temp	Price (1-99)	Price (1k)^*
LTC2156CUP-12#PBF	QFN	64	C	$79.19	$55.43
LTC2156CUP-12#TRPBF	QFN	64	C		$55.49
LTC2156CUP-14#PBF	QFN	64	C	$156.80	$109.76
LTC2156CUP-14#TRPBF	QFN	64	C		$109.82
LTC2156IUP-12#PBF	QFN	64	I	$91.07	$63.75
LTC2156IUP-12#TRPBF	QFN	64	I		$63.81
LTC2156IUP-14#PBF	QFN	64	I	$180.32	$126.23
LTC2156IUP-14#TRPBF	QFN	64	I		$126.29

^* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number	Description	Price	Documentation
DC1564A-E	LTC2156-12: 12-bit, 210Msps, 1.8V Dual ADC, DDR LVDS Outputs, 5-140MHz, req DC1371	$200.00	Design File Manual Schematic Software

Companion Boards

Part Number	Description	Price	Documentation
DC1371B	FMC High-Speed Data Acquisition Board	$1,950.00	Manual Schematic