LTC1746 Low Power,14-Bit, 25Msps ADC

The LTC®1746 is a 25Msps, sampling 14-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 LTC1746’s input range to be optimized for a wide variety of applications.

The LTC1746 is perfect for demanding communications applications with AC performance that includes 77.5dB SNR and 91dB spurious free dynamic range. Ultralow jitter of 0.3psRMS allows undersampling with excellent noise performance. DC specs include ±3LSB INL maximum and no missing codes over temperature.

The digital interface is compatible with 5V, 3V and 2V 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 digital output power supply can be operated from 0.5V to 5V, making it easy to connect directly to low voltage DSPs or FIFOs.

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

产品特点 Features Sample Rate: 25Msps 77.5dB SNR and 91dB SFDR (3.2V Range) 74dB SNR and 96dB SFDR (2V Range) No Missing Codes Single 5V Supply Low Power Dissipation: 390mW Selectable Input Ranges: ±1V or ±1.6V 240MHz Full Power Bandwidth S/H Pin Compatible Family 25 Msps: LTC1746 (14-Bit), LTC1745 (12-Bit) 50 Msps: LTC1744 (14-Bit), LTC1743 (12-Bit) 65 Msps: LTC1742 (14-Bit), LTC1741 (12-Bit) 80 Msps: LTC1748 (14-Bit), LTC1747 (12-Bit) 封装	应用 Telecommunications Medical Imaging Receivers Cellular Base Stations Spectrum Analysis Imaging Systems 典型应用图

产品特点 Features

Sample Rate: 25Msps
77.5dB SNR and 91dB SFDR (3.2V Range)
74dB SNR and 96dB SFDR (2V Range)
No Missing Codes
Single 5V Supply
Low Power Dissipation: 390mW
Selectable Input Ranges: ±1V or ±1.6V
240MHz Full Power Bandwidth S/H
Pin Compatible Family
25 Msps: LTC1746 (14-Bit), LTC1745 (12-Bit)
50 Msps: LTC1744 (14-Bit), LTC1743 (12-Bit)
65 Msps: LTC1742 (14-Bit), LTC1741 (12-Bit)
80 Msps: LTC1748 (14-Bit), LTC1747 (12-Bit)

封装

应用

Telecommunications
Medical Imaging
Receivers
Cellular Base Stations
Spectrum Analysis
Imaging Systems

典型应用图

LTC1746 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) *
LTC1746CFW	TSSOP	48	C	$10.80	$9.30
LTC1746CFW#PBF	TSSOP	48	C	$10.80	$9.30
LTC1746CFW#TR	TSSOP	48	C		$9.40
LTC1746CFW#TRPBF	TSSOP	48	C		$9.40
LTC1746IFW	TSSOP	48	I	$12.70	$10.95
LTC1746IFW#PBF	TSSOP	48	I	$12.70	$10.95
LTC1746IFW#TR	TSSOP	48	I		$11.05
LTC1746IFW#TRPBF	TSSOP	48	I		$11.05

LTC1746 数据手册及相关资料下载

数据手册( 英文) : LTC1746 - Low Power,14-Bit, 25Msps 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