LT1739

更新时间： 2024-10-04 05:43:23

品牌	Logo	应用领域
凌特 - Linear		放大器驱动
页数	文件大小	规格书
20页	282K
描述
Dual 500mA, 200MHz xDSL Line Driver Amplifier

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LT1739 数据手册

LT1739

Dual 500mA, 200MHz

xDSL Line Driver Amplifier

FEATURES

DESCRIPTIO

TheLT^®1739isa500mAminimumoutputcurrent,dualop

amp with outstanding distortion performance. The ampli-

fiersaregain-of-tenstable, butcanbeeasilycompensated

for lower gains. The extended output swing allows for

lowersupplyrailstoreducesystempower. Supplycurrent

is set with an external resistor to optimize power dissipa-

tion. The LT1739 features balanced, high impedance in-

puts with low input bias current and input offset voltage.

Active termination is easily implemented for further sys-

tempowerreduction.Short-circuitprotectionandthermal

shutdown insure the device’s ruggedness.

■

3mm × 4mm High Power DFN Package

■

Exceeds All Requirements For Full Rate,

Downstream ADSL Line Drivers

±500mA Minimum I_OUT

■

±11.1V Output Swing, V_S= ±12V, R_L= 100Ω

■

±10.9V Output Swing, V_S= ±12V, I_L= 250mA

■

Low Distortion: –82dBc at 1MHz, 2V_P-PInto 50Ω

■

Power Saving Adjustable Supply Current

■

Power Enhanced TSSOP-20 Small Footprint Package

■

200MHz Gain Bandwidth

■

600V/µs Slew Rate

■

Specified at ±12V and ±5V

The outputs drive a 100Ω load to ±11.1V with ±12V

supplies, and ±10.9V with a 250mA load. The LT1739 is a

pin-for-pin replacement for the LT1794 in xDSL line driver

applications and requires no circuit changes.

APPLICATIO S

■

High Density ADSL Central Office Line Drivers

■

The LT1739 is available in the very small, thermally

enhanced, 3mm × 4mm DFN package or a 20-lead TSSOP

for maximum port density in central office line driver

applications. For a dual version of the LT1739, see the

LT6301 data sheet.

High Efficiency ADSL, HDSL2, G.lite,

SHDSL Line Drivers

Buffers

Test Equipment Amplifiers

Cable Drivers

■

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

TYPICAL APPLICATIO

High Efficiency ±12V Supply ADSL Central Office Line Driver

12V

3mm × 4mm DFN Package

BIAS

Bottom View

24.9k

+IN

SHDN

12.7Ω

1/2

LT1739

EXPOSED

THERMAL

PAD

–

1:2*

0.8mm

110Ω

100Ω

1000pF

1739 TA01

1739 TA02

3mm

4mm

*COILCRAFT X8390-A OR EQUIVALENT

= 10mA PER AMPLIFIER

–

SUPPLY

WITH R

12.7Ω

1/2

LT1739

= 24.9k

BIAS

SHDNREF

–IN

–12V

1739fas, sn1739

12 3 4 5 6 7...20

中文翻译

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与LT1739相关器件

型号	品牌	获取价格	描述	数据表
LT1739CFE	Linear	获取价格	Dual 500mA, 200MHz xDSL Line Driver Amplifier
LT1739CFE#PBF	Linear	获取价格	LT1739 - Dual 500mA, 200MHz xDSL Line Driver Amplifier; Package: TSSOP; Pins: 20; Temperat
LT1739CFE#TR	Linear	获取价格	暂无描述
LT1739CFE#TRPBF	Linear	获取价格	LT1739 - Dual 500mA, 200MHz xDSL Line Driver Amplifier; Package: TSSOP; Pins: 20; Temperat
LT1739CUE	Linear	获取价格	Dual 500mA, 200MHz xDSL Line Driver Amplifier
LT1739CUE#TR	Linear	获取价格	LT1739 - Dual 500mA, 200MHz xDSL Line Driver Amplifier; Package: DFN; Pins: 12; Temperatur
LT1739CUE#TRPBF	Linear	获取价格	LT1739 - Dual 500mA, 200MHz xDSL Line Driver Amplifier; Package: DFN; Pins: 12; Temperatur
LT1739IFE	Linear	获取价格	Dual 500mA, 200MHz xDSL Line Driver Amplifier
LT1739IFE#PBF	Linear	获取价格	LT1739 - Dual 500mA, 200MHz xDSL Line Driver Amplifier; Package: TSSOP; Pins: 20; Temperat
LT1739IFE#TRPBF	Linear	获取价格	LT1739 - Dual 500mA, 200MHz xDSL Line Driver Amplifier; Package: TSSOP; Pins: 20; Temperat

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