LT1969 Dual 700MHz, 200mA, Adjustable Current Operational Amplifier

The LT®1969 is an adjustable current version of the popular LT1886, a 200mA minimum output current, dual op amp with outstanding distortion performance. The adjustable current feature is highly desirable in applications where minimum power dissipation is required while still being able to provide adequate line termination.

At nominal supply current, the amplifiers are gain of 10 stable and can easily be compensated for lower gains. The LT1969 features balanced high impedance inputs with 4µA input bias current and 4mV maximum input offset voltage. Single supply applications are easy to implement and have lower total noise than current feedback amplifier implementations.

The output drives a 25 Ohms load to ±4.3V with ±6V supplies. On ±2.5V supplies, the output swings ±1.5V with a 100 Ohms load. The amplifier is stable with a 1000pF capacitive load making it useful in buffer and cable driver applications.

The LT1969 is manufactured on linear Technology’s advanced low voltage complementary bipolar process and is available in a thermally enhanced MS10 package

产品特点 Features

700MHz Gain Bandwidth
±200mA Minimum IOUT
Adjustable Quiescent Current
Low Distortion: –72dBc at 1MHz, 4VP-P , 25 Ohms, AV = 2
Stable in AV >/= 10, Simple Compensation for AV < 10
±4.3V Minimum Output Swing, VS = ±6V, RL = 25 Ohms
Stable with 1000pF Load
6nV Rt.Hz Input Noise Voltage
2pA Rt.Hz Input Noise Current
4mV Maximum Input Offset Voltage
4µA Maximum Input Bias Current
400nA Maximum Input Offset Current
±4.5V Minimum Input CMR, VS = ±6V
Specified at ±6V, ±2.5V

封装

应用

DSL Modems
xDSL PCI Cards
USB Modems
Line Drivers

典型应用图

参数

LT1969 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) *
LT1969CMS	MSOP	10	C	$3.75	$2.95
LT1969CMS#PBF	MSOP	10	C	$3.75	$2.95
LT1969CMS#TR	MSOP	10	C		$3.01
LT1969CMS#TRPBF	MSOP	10	C		$3.01

LT1969 数据手册及相关资料下载

数据手册(英文) : LT1969 - Dual 700MHz, 200mA, Adjustable Current Operational Amplifier.PDF
可靠性数据 : R376 Reliability Data .PDF
LT Journal : Dec 2001 Reduce Power Consumption of DSL Modems with the LT1969 Line Driver.PDF