LTC2174-14 - 14-Bit, 105Msps Low Power Quad ADCs

Features

• 4-Channel Simultaneous Sampling ADC
• 73.4dB SNR
• 88dB SFDR
• Low Power: 558mW/450mW/376mW
• Single 1.8V Supply
• Serial LVDS Outputs: 1 or 2 Bits per Channel
• Selectable Input Ranges: 1V_P-P to 2V_P-P
• 800MHz Full Power Bandwidth S/H
• 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

Description

The LTC2175-14/2174-14/2173-14 are 4-channel, simultaneous 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 73.4dB SNR and 88dB spurious free dynamic range (SFDR). Ultralow jitter of 0.15psRMS allows undersampling of IF frequencies with excellent noise performance.

DC specs include ±1LSB INL (typ), ±0.3LSB DNL (typ) and no missing codes over temperature. The transition noise is a low 1.2 LSB_RMS.

The digital outputs are serial LVDS to minimize the number of data lines. Each channel outputs two bits at a time (2-lane mode). At lower sampling rates there is a one bit per channel option (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.

Packaging

QFN-52

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
LTC2174CUKG-12#PBF	QFN	52	C	$83.57	$58.50	View
LTC2174CUKG-12#TRPBF	QFN	52	C		$58.60	View
LTC2174CUKG-14#PBF	QFN	52	C	$141.43	$99.00	View
LTC2174CUKG-14#TRPBF	QFN	52	C		$99.10	View
LTC2174IUKG-12#PBF	QFN	52	I	$100.29	$70.20	View
LTC2174IUKG-12#TRPBF	QFN	52	I		$70.30	View
LTC2174IUKG-14#PBF	QFN	52	I	$169.71	$118.80	View
LTC2174IUKG-14#TRPBF	QFN	52	I		$118.90	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.

Applications

• Communications
• Cellular Base Stations
• Software Defined Radios
• Portable Medical Imaging
• Multichannel Data Acquisition
• Nondestructive Testing

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