Datasheet > LT1969

LT1969

更新时间： 2024-09-15 14:58:11

品牌	Logo	应用领域
亚德诺 - ADI		放大器运算放大器
页数	文件大小	规格书
20页	290K
描述
双通道、700MHz、200mA、可调电流运算放大器

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中文翻译

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LT1969 数据手册

LT1969

Dual 700MHz, 200mA,

Adjustable Current Operational Amplifier

FEATURES

DESCRIPTIO

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 applica-

tions where minimum power dissipation is required while

still being able to provide adequate line termination.

■

700MHz Gain Bandwidth

■

±200mA Minimum I_OUT

■

Adjustable Quiescent Current

■

Low Distortion: –72dBc at 1MHz, 4V_P-P, 25Ω, A_V= 2

Stable in A_V≥ 10, Simple Compensation for A_V< 10

±4.3V Minimum Output Swing, V_S= ±6V, R_L= 25Ω

Stable with 1000pF Load

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.

6nV/√Hz Input Noise Voltage

2pA/√Hz Input Noise Current

4mV Maximum Input Offset Voltage

4µA Maximum Input Bias Current

400nA Maximum Input Offset Current

±4.5V Minimum Input CMR, V_S= ±6V

Specified at ±6V, ±2.5V

The output drives a 25Ω load to ±4.3V with ±6V supplies.

On ±2.5V supplies, the output swings ±1.5V with a 100Ω

load. The amplifier is stable with a 1000pF capacitive load

making it useful in buffer and cable driver applications.

APPLICATIO S

■

DSL Modems

■

xDSL PCI Cards

The LT1969 is manufactured on Linear Technology’s

advancedlowvoltagecomplementarybipolarprocessand

is available in a thermally enhanced MS10 package

, LTC and LT are registered trademarks of Linear Technology Corporation.

■

USB Modems

Line Drivers

■

TYPICAL APPLICATIO

Single 12V Supply ADSL Modem Line Driver

12V

ADSL Modem Line Driver Distortion

0.1µF

–60

= 12V

= 10

12.4Ω

1/2 LT1969

f = 200kHz

100Ω LINE

1:2 TRANSFORMER

–70

–80

–

909Ω

*COILCRAFT X8390-A

OR EQUIVALENT

10k 20k

HD2

HD3

1:2*

100Ω

–

100Ω

1µF

–90

909Ω

ON = 14mA

CTRL1 CTRL2

LOW POWER = 2mA

STANDBY = 600µA

–100

12.4Ω

10 12 14 16

0.1µF

1/2 LT1969

STANDBY ON

13k

49.9k

LINE VOLTAGE (V

)

P-P

–

LOGIC

OUTPUT

1969 TA01b

STANDBY

LOW POWER

1969 TA01a

12 3 4 5 6 7...20

中文翻译

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与LT1969相关器件

型号	品牌	获取价格	描述	数据表
LT1969CMS	Linear	获取价格	Dual 700MHz, 200mA, Adjustable Current Operational Amplifier
LT1969CMS#PBF	Linear	获取价格	暂无描述
LT1969CMS#TR	Linear	获取价格	LT1969 - Dual 700MHz, 200mA, Adjustable Current Operational Amplifier; Package: MSOP; Pins
LT1969CMS#TRPBF	Linear	获取价格	LT1969 - Dual 700MHz, 200mA, Adjustable Current Operational Amplifier; Package: MSOP; Pins
LT1970	Linear	获取价格	500mA Power Op Amp with Adjustable Precision Current Limit
LT1970	ADI	获取价格	具可调精准电流限值的 500mA 功率运算放大器
LT1970_1	Linear	获取价格	500mA Power Op Amp with Adjustable Precision Current Limit
LT1970A	Linear	获取价格	500mA Power Op Amp with Adjustable Precision Current Limit
LT1970A	ADI	获取价格	具可调精准电流限值的 500mA 功率运算放大器
LT1970AIFE#PBF	Linear	获取价格	LT1970A - 500mA Power Op Amp with Adjustable Precision Current Limit; Package: TSSOP; Pins

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