LTC1747 12-Bit, 80Msps Low Noise ADC

The LTC®1747 is an 80Msps, sampling 12-bit A/D converter designed for digitizing high frequency, wide dynamic range signals. Pin selectable input ranges of ±1V and ±1.6V along with a resistor programmable mode allow the LTC1747’s input range to be optimized for a wide variety of applications.

The LTC1747 is perfect for demanding communications applications with AC performance that includes 72dB SNR and 85dB spurious free dynamic range. Ultralow jitter of 0.15psRMS allows undersampling of IF frequencies with excellent noise performance. DC specs include ±1.5 LSB INL and ±0.8LSB DNL over temperature.

The digital interface is compatible with 5V, 3V, 2V and LVDS logic systems. The ENC and ENC inputs may be driven differentially from PECL, GTL and other low swing logic families or from single-ended TTL or CMOS. The low noise, high gain ENC and ENC inputs may also be driven by a sinusoidal signal without degrading performance. A separate output power supply can be operated from 0.5V to 5V, making it easy to connect directly to any low voltage DSPs or FIFOs.

The TSSOP package with a flow-through pinout simplifies the board layout

产品特点 Features Sample Rate: 80Msps 72dB SNR and 85dB SFDR (3.2V Range) 70.5dB SNR and 87dB SFDR (2V Range) Pin Compatible with 14-Bit 80Msps LTC1748 No Missing Codes Single 5V Supply Power Dissipation: 1.4W Selectable Input Ranges: ±1V or ±1.6V 240MHz Full Power Bandwidth S/H Pin Compatible Family 25Msps: LTC1746 (14-Bit), LTC1745 (12-Bit) 50Msps: LTC1744 (14-Bit), LTC1743 (12-Bit) 65Msps: LTC1742 (14-Bit), LTC1741 (12-Bit) 80Msps: LTC1748 (14-Bit), LTC1747 (12-Bit) 48-Pin TSSOP Package 封装	应用 Telecommunications Receivers Cellular Base Stations Spectrum Analysis Imaging Systems 典型应用图

产品特点 Features

Sample Rate: 80Msps
72dB SNR and 85dB SFDR (3.2V Range)
70.5dB SNR and 87dB SFDR (2V Range)
Pin Compatible with 14-Bit 80Msps LTC1748
No Missing Codes
Single 5V Supply
Power Dissipation: 1.4W
Selectable Input Ranges: ±1V or ±1.6V
240MHz Full Power Bandwidth S/H
Pin Compatible Family
25Msps: LTC1746 (14-Bit), LTC1745 (12-Bit)
50Msps: LTC1744 (14-Bit), LTC1743 (12-Bit)
65Msps: LTC1742 (14-Bit), LTC1741 (12-Bit)
80Msps: LTC1748 (14-Bit), LTC1747 (12-Bit)
48-Pin TSSOP Package

封装

应用

Telecommunications
Receivers
Cellular Base Stations
Spectrum Analysis
Imaging Systems

典型应用图

LTC1747 订购信息和价格参考Package Variations and Pricing

器件型号	封装	引脚	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量) *
LTC1747CFW	TSSOP	48	C	$10.80	$9.30
LTC1747CFW#PBF	TSSOP	48	C	$10.80	$9.30
LTC1747CFW#TR	TSSOP	48	C		$9.40
LTC1747CFW#TRPBF	TSSOP	48	C		$9.40
LTC1747IFW	TSSOP	48	I	$12.70	$10.95
LTC1747IFW#PBF	TSSOP	48	I	$12.70	$10.95
LTC1747IFW#TR	TSSOP	48	I		$11.05
LTC1747IFW#TRPBF	TSSOP	48	I		$11.05

LTC1747 演示电路板

器件型号	描述
DC520B-E	LTC1747CFW \| 12-Bit / 80 Msps Low Noise ADC, Ain < 40MHz (requires DC718 controller)
DC520B-F	LTC1747CFW \| 12-Bit / 80 Msps Low Noise ADC, Ain > 40MHz (requires DC718 controller)

LTC1747 Companion Boards

器件型号	描述
DC718C	USB Data Acquisition Controller, for QuikEval -II Evaluation Kits

LTC1747 数据手册及相关资料下载

数据手册( 英文) : LTC1747 - 12-Bit, 80Msps Low Noise ADC .PDF
可靠性数据 : R479 Reliability Data .PDF
产品选型卡 : Differential Amplifiers/High Speed ADC Drivers .PDF
LT Journal: Dec 2002 A 14-Bit ADC that is Both Fast and Low Noise.PDF