LTC2298 - Dual 14-Bit, 65Msps Low Power 3V ADCs

Features

• Click Here for LTC2298 Evaluation Kits
• Integrated Dual 14-Bit ADCs
• Sample Rate: 65Msps/40Msps/25Msps
• Single 3V Supply (2.7V to 3.4V)
• Low Power: 400mW/235mW/150mW
• 74.3dB SNR
• 90dB SFDR
• 110dB Channel Isolation at 100MHz
• Multiplexed or Separate Data Bus
• 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
  105Msps: LTC2282 (12-Bit), LTC2284 (14-Bit)
  80Msps: LTC2294 (12-Bit), LTC2299 (14-Bit)
  65Msps: LTC2293 (12-Bit), LTC2298 (14-Bit)
  40Msps: LTC2292 (12-Bit), LTC2297 (14-Bit)
  25Msps: LTC2291 (12-Bit), LTC2296 (14-Bit)
• 64-Pin (9mm × 9mm) 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 LTC2298/LTC2297/LTC2296 are 14-bit 65Msps/40Msps/25Msps, low power dual 3V A/D converters designed for digitizing high frequency, wide dynamic range signals. The LTC2298/LTC2297/LTC2296 are perfect for demanding imaging and communications applications with AC performance that includes 74.3dB SNR and 90dB SFDR for signals at the Nyquist frequency.

DC specs include ±1.2LSB INL (typ), ±0.5LSB DNL (typ) and no missing codes over temperature. The transition noise is a low 1LSB_RMS.

A single 3V supply allows low power operation. A separate output supply allows the outputs to drive 0.5V to 3.6V logic. An optional multiplexer allows both channels to share a digital output bus.

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-64

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
LTC2298CUP#PBF	QFN	64	C	$48.45	$35.03	View
LTC2298CUP#TRPBF	QFN	64	C		$35.13	View
LTC2298IUP	QFN	64	I	$58.10	$42.00	View
LTC2298IUP#PBF	QFN	64	I	$58.10	$42.00	View
LTC2298IUP#TR	QFN	64	I		$42.10	View
LTC2298IUP#TRPBF	QFN	64	I		$42.10	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
DC851A-B	LTC2298IUP | DeMUX Dual ADC, +3.0V, 65Msps 14-Bit 1MHz < Ain < 70MHz, (req. DC890)	$200.00
DC851A-G	LTC2298IUP | DeMUX DUAL ADC, +3.0V, 65Msps, 14Bit, 70MHz < AIN < 140MHz, (req. DC890)	$200.00
DC816A-B	LTC2298IUP | MUX DUAL ADC, VDD=+3.0V, 65Msps, 14Bit, 1MHz < AIN < 70MHz, (req. DC718)	$200.00
DC816A-G	LTC2298IUP | MUX DUAL ADC, VDD=+3.0V, 65Msps, 14Bit, 70MHz < AIN < 140MHz, (req. DC718)	$200.00
DC718C	none | USB Data Acquisition Controller, for Controlling QuickEval Boards
DC890B	High Speed USB Data Collection Board	$300.00
DC890_LVDS_XFMR	LVDS Power Transformer, goes with DC890B/ ADC LVDS demoboards	$0.00
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Applications

• Wireless and Wired Broadband Communication
• Imaging Systems
• 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 LTC2298:

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 DC890 FastDAACS USB Controller either online or from your local sales representative. The DC890 interfaces with the USB port of your computer and connects to the LTC2298 daughter cards. 
   
   
3. Request the evaluation kit for the LTC2298 (DC851A), either online or from your local sales representative. These daughter cards along with the QuickEval software package, allow easy evaluation of the part from your PC.
   
   
   • DC851A-B, Fin = 1MHz to 70MHz
   • DC851A-G, Fin = 70MHz to 140MHz
   
   
4. For multiplexed output operation, Request the DC718 QuickDAATS USB Controller  either online or from your local sales representative and the DC816A-B or DC816A-G daughter card from your sales representative.
   
   
   • DC816A-B, Fin = 1MHz to 70MHz
   • DC816A-G, Fin = 70MHz to 140MHz