LT1675 250MHz, Triple and Single RGB Multiplexer with Current Feedback Amplifiers

The LT®1675 is a high speed RGB multiplexer designed for pixel switching and fast workstation graphics. Included on chip are three SPDT switches and three current feedback amplifiers. The current feedback amplifiers drive double-terminated 50 Ohm or 75 Ohm cables and are configured for a fixed gain of 2, eliminating six external gain setting resistors. The SPDT switches are designed to be break-before-make to minimize unwanted signals coupling to the input.

The LT1675-1 is a single version with two inputs, a single output and is ideal for a single channel application such as video sync.

The key to the LT1675 fast switching speed is linear Technology's proprietary high speed bipolar process. This MUX can toggle between sources in excess of 100MHz, has a slew rate over 1000V/µs and has a -3dB bandwidth of 250MHz. Power supply requirements are ±4V to ±6V and power dissipation is only 300mW on ±5V, or 100mW for the LT1675-1. The expandable feature uses the disable pin to reduce the power dissipation to near 0mW in the off parts.

Unlike competitive solutions that are in bulky high pin count packages, the LT1675 is in a 16-lead narrow body SSOP. This small footprint, the size of an SO-8, results in a very clean high performance solution. The LT1675-1 is available in the tiny MSOP and the SO-8

产品特点 Features

100MHz Pixel Switching
-3dB Bandwidth: 250MHz
Channel Switching Time: 2.5ns
Expandable to Larger Arrays
Drives Cables Directly
High Slew Rate: 1100V/µs
Low Switching Transient: 50mV
Shutdown Supply Current: 100µA
Output Short-Circuit Protected
Available in Small 16-Pin SSOP Package

参数

应用

RGB Switching
Workstation Graphics
Pixel Switching
Coaxial Cable Drivers
High Speed Signal Processing

典型应用图

LT1675 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) *
LT1675CGN	SSOP	16	C	$3.95	$3.25
LT1675CGN#PBF	SSOP	16	C	$3.95	$3.25
LT1675CGN#TR	SSOP	16	C		$3.42
LT1675CGN#TRPBF	SSOP	16	C		$3.42
LT1675CMS8-1	MSOP	8	C	$2.55	$2.15
LT1675CMS8-1#PBF	MSOP	8	C	$2.55	$2.15
LT1675CMS8-1#TR	MSOP	8	C		$2.21
LT1675CMS8-1#TRPBF	MSOP	8	C		$2.21
LT1675CS8-1	SO	8	C	$2.30	$1.95
LT1675CS8-1#PBF	SO	8	C	$2.30	$1.95
LT1675CS8-1#TR	SO	8	C		$2.01
LT1675CS8-1#TRPBF	SO	8	C		$2.01

LT1675 数据手册及相关资料下载

数据手册(英文) : LT1675/LT1675-1 - 250MHz, Triple and SingleRGB Multiplexer with Current Feedback Amplifi.PDF
设计要点 (英文) : DN205 - Tiny RGB Video Multiplexer Switches Pixels at 100MHz.PDF
可靠性数据 : R395 Reliability Data .PDF
LT Journal : Nov 1998 250MHz RGB Video Multiplexer in Space-Saving Package Drives Cables, Switches Pixels at 100MHz.PDF