LTC2258-14 - 14-Bit, 65Msps Ultralow Power 1.8V ADCs

Features

• Click Here for LTC2258 Evaluation Kit
• 74dB SNR
• 88dB SFDR
• Low Power: 81mW/49mW/35mW
• Single 1.8V Supply
• CMOS, DDR CMOS or DDR LVDS Outputs
• Selectable Input Ranges: 1V_P-P to 2V_P-P
• 800MHz Full-Power Bandwidth S/H
• Optional Data Output Randomizer
• Optional Clock Duty Cycle Stabilizer
• Shutdown and Nap Modes
• Serial SPI Port for Confi guration
• Pin Compatible 14-Bit and 12-Bit Versions
• 40-Pin (6mm × 6mm) QFN Package

Typical Application

Description

The LTC2258-14/LTC2257-14/LTC2256-14 are sampling 14-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 74dB SNR and 88dB spurious free dynamic range (SFDR). Ultralow jitter of 0.17ps_RMS allows undersampling of IF frequencies with excellent noise performance.

DC specs include ±1LSB INL (typical), ±0.3LSB DNL (typical) and no missing codes over temperature. The transition noise is a low 1.13LSB_RMS.

The digital outputs can be either full rate CMOS, double data rate CMOS, or double data rate LVDS. A separate output power supply allows the CMOS output swing to range from 1.2V to 1.8V.

The ENC⁺ and ENC^– inputs may be driven differentially or single ended 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.

Packaging

QFN-40

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
LTC2258CUJ-12#PBF	QFN	40	C	$20.11	$14.08	View
LTC2258CUJ-12#TRPBF	QFN	40	C		$14.14	View
LTC2258CUJ-14#PBF	QFN	40	C	$36.21	$25.35	View
LTC2258CUJ-14#TRPBF	QFN	40	C		$25.41	View
LTC2258IUJ-12#PBF	QFN	40	I	$24.14	$16.90	View
LTC2258IUJ-12#TRPBF	QFN	40	I		$16.96	View
LTC2258IUJ-14#PBF	QFN	40	I	$43.46	$30.42	View
LTC2258IUJ-14#TRPBF	QFN	40	I		$30.48	View
Buy Now
Request Samples

^* 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
DC1369A-D	LTC2258-14: 14-bit 65Msps ADC, LVDS Outputs, 5-170MHz, req DC890, LVDS_XFMR and DC1075	$200.00
DC1370A-D	LTC2258-14: 14-bit 65Msps ADC, CMOS Outputs, 5-170MHz, req DC890 and DC1075	$200.00
DC890B	High Speed USB Data Collection Board	$300.00
DC890_LVDS_XFMR	LVDS Power Transformer, goes with DC890B/ ADC LVDS demoboards	$0.00
Buy Now

Applications

• Communications
• Cellular Base Stations
• Software Defined Radios
• Portable Medical Imaging
• Multi-Channel Data Acquisition
• Nondestructive Testing

Simulate

To simulate selected Linear Technology products, please download LTSpice / SwitcherCAD III. This powerful schematic capture and simulation tool includes macro models for 80% of Linear Technology's switching regulators, over 200 op amp models, as well as resistors, transistors and MOSFET models.

For other simulation tools, visit our Design Simulation and Device Models page.