LT6557 具输入偏置控制功能、增益为 2、500MHz、2200V/µs 的单电源三路视频放大器

The LT6557 is a high speed triple video ampliﬁer with an internal ﬁxed gain of 2 and a programmable DC input bias voltage. This ampliﬁer features a 400MHz 2VP-P signal bandwidth, 2200V/µs slew rate and a unique ability to drive heavy output loads to 0.8V of the supply rails, making the LT6557 ideal for a single 5V supply, wideband video application. With just one resistor, the inputs of all three ampliﬁ ers can be programmed to a common voltage level, simplifying and reducing the need for external circuitry in the AC-coupled applications. Without the programmable resistor, the input bias circuit becomes inactive, allowing the use of an external clamp circuit or direct coupled input.

The LT6557 has separate power supply and ground pins for each ampliﬁ er to improve channel separation and to ease power supply bypassing. The LT6557 provides uncompromised performance in many high speed applications where a low voltage, single supply is required.

The LT6557 is available in 16-lead SSOP and 5mm × 3mm DFN packages

产品特点 Features

–3dB Small-Signal Bandwidth: 500MHz
–3dB 2VP-P Large-Signal Bandwidth: 400MHz
Slew Rate: 2200V/µs
Fixed Gain of 2, No External Resistors Required
AC Coupling with Programmable DC Input Bias
Output Swings to 0.8V of Supply Rails
Full Video Swing with 5V Single Supply
Diff Gain: 0.05%
Diff Phase: 0.05°
Shutdown Pin
High Output Current: ±100mA
Supply Range: 3V to 7.5V
Operating Temperature Range: –40°C to 85°C
Available in 16-Lead SSOP and 5mm × 3mm DFN Packages

参数

应用

LCD Video Projectors
RGB HD Video Ampliﬁers
Coaxial Cable Drivers
Low Supply ADC Drivers

典型应用图

LT6557 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) *
LT6557CDHC	DFN	16	C	$3.57	$2.50
LT6557CDHC#PBF	DFN	16	C	$3.57	$2.50
LT6557CDHC#TR	DFN	16	C		$2.55
LT6557CDHC#TRPBF	DFN	16	C		$2.55
LT6557CGN	SSOP	16	C	$3.57	$2.50
LT6557CGN#PBF	SSOP	16	C	$3.57	$2.50
LT6557CGN#TR	SSOP	16	C		$2.55
LT6557CGN#TRPBF	SSOP	16	C		$2.55
LT6557IDHC	DFN	16	I	$4.29	$3.00
LT6557IDHC#PBF	DFN	16	I	$4.29	$3.00
LT6557IDHC#TR	DFN	16	I		$3.05
LT6557IDHC#TRPBF	DFN	16	I		$3.05
LT6557IGN	SSOP	16	I	$4.29	$3.00
LT6557IGN#PBF	SSOP	16	I	$4.29	$3.00
LT6557IGN#TR	SSOP	16	I		$3.05
LT6557IGN#TRPBF	SSOP	16	I		$3.05

LT6557 数据手册及相关资料下载

数据手册(英文) : LT6557 - 500MHz, 2200V/µs Gain of 2, Single Supply Triple Video Amplifier with Input Bias Control.PDF
可靠性数据 : R395 Reliability Data .PDF
产品选型卡 : Differential Amplifiers/High Speed ADC Drivers .PDF
LT Journal : Dec 2005 Simplify High-Resolution Video Designs with Fixed-Gain Triple Multiplexers.PDF
产品新闻发布 (中文) : UXGA 分辨率视频多路复用器简化了 RGB 信号布线.PDF