LTC2249 - 14-Bit, 80Msps Low Power 3V ADC

Features

• Click Here for LTC2249 Evaluation Kits
• Sample Rate: 80Msps
• Single 3V Supply (2.7V to 3.4V)
• Low Power: 222mW
• 73dB SNR at 70MHz Input
• 90dB SFDR at 70MHz Input
• No Missing Codes
• Flexible Input: 1V_P-P to 2V_P-P Range
• 575MHz 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
• This Product is subject to United States Export Control and
  may require a license for export to certain countries.

Typical Application

Description

The LTC2249 is a 14-bit 80Msps, low power 3V A/D converter designed for digitizing high frequency, wide dynamic range signals. The LTC2249 is perfect for demanding imaging and communications applications with AC performance that includes 73dB SNR and 90dB SFDR for signals well beyond 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 1.2LSB_RMS.

A single 3V supply allows low power operation. A separate output supply allows the outputs to drive 0.5V to 3.6V 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.

Packaging

QFN-32

Order Info

• Part numbers ending in PBF are lead free. Please contact LTC marketing for information on lead based finish parts.
• Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
• Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number	Package	Pins	Temp	Price (1-99)	Price (1k)*	RoHS Data
LTC2249CUH	QFN	32	C	$34.58	$25.00	View
LTC2249CUH#PBF	QFN	32	C	$34.58	$25.00	View
LTC2249CUH#TR	QFN	32	C		$25.10	View
LTC2249CUH#TRPBF	QFN	32	C		$25.10	View
LTC2249IUH	QFN	32	I	$41.50	$30.00	View
LTC2249IUH#PBF	QFN	32	I	$41.50	$30.00	View
LTC2249IUH#TR	QFN	32	I		$30.10	View
LTC2249IUH#TRPBF	QFN	32	I		$30.10	View
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^* 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.

Evaluation Kits

Part Number	Description	Price
DC782A-A	LTC2249IUH | High Speed ADC, VDD = +3.0V, 80Msps, 14-Bit 1MHz < Ain < 70MHz, req DC718B	$200.00
DC782A-Q	LTC2249IUH | High Speed ADC, VDD = +3.0V, 80Msps, 14-Bit 70MHz < Ain < 170MHz, req DC718B	$200.00
DC718C	none | USB Data Acquisition Controller, for Controlling QuickEval Boards
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Applications

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

Simulate

Linear Technology offers free software and demo boards that greatly simplify the task of testing and evaluating our data converters. To use these powerful tools with the LTC2249:

1. Download the PScope (QuickEval II) System software. The PScope System is a USB-based product demonstration and data acquisition system for use with Linear Technologys high performance analog to digital converters. The software also includes web links to the appropriate device data sheets and provides an automatic update feature to keep the software current with the latest set of device drivers.
   
   
2. Request the DC718 QuickDAATS USB Controller either online or from your local sales representative. The DC718 QuickDAATs USB Controller interfaces with the USB port of your computer and connects to the LTC2249 daughter cards.
   
   
3. Request the DC782A-A or DC782A-Q either online or from your local sales representative. The DC782A allows easy evaluation of the LTC2249 from your PC.