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LT1497

更新时间： 2023-12-20 18:44:18
品牌 Logo 应用领域
亚德诺 - ADI 放大器
页数 文件大小 规格书
12页 258K
描述
双通道 125mA、50MHz 电流反馈放大器

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中文翻译

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LT1497 数据手册

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LT1497  
Dual 125mA, 50MHz  
Current Feedback Amplifier  
U
FEATURES  
DESCRIPTION  
The LT®1497 dual current feedback amplifier features low  
power, high output drive, excellent video characteristics  
and outstanding distortion performance. From a low 7mA  
maximum supply current per amplifier, the LT1497 drives  
±100mAwithonly1.9Vofheadroom.Twistedpairscanbe  
drivendifferentiallywith –70dBcdistortionupto1MHzfor  
±40mA peak signals.  
■
Minimum Output Current:  
±
125mA  
■
Maximum Supply Current per Amp: 7mA, VS = ±5V  
■
■
■
Bandwidth: 50MHz, VS = ±15V  
Slew Rate: 900V/µs, VS = ±15V  
Wide Supply Range: VS = ±2.5V to ±15V  
(Enhanced θJA 16-Pin SO Package)  
■
■
■
■
■
■
■
Enhanced θJA SO-8 Package for ±5V Operation  
0.02% Differential Gain: AV = 2, RL = 150Ω  
0.015° Differential Phase: AV = 2, RL = 150Ω  
±13V Output Swing: IL = 100mA, VS = ±15V  
±3.1V Output Swing: IL = 100mA, VS = ±5V  
55ns Settling Time to 0.1%, 10V Step  
Thermal Shutdown Protection  
The LT1497 is available in a low thermal resistance 16-pin  
SO package for operation with supplies up to ±15V. For  
±5V operation the device is also available in a low thermal  
resistance SO-8 package. The device has thermal and  
current limit circuits that protect against fault conditions.  
The LT1497 is manufactured on Linear Technology’s  
complementary bipolar process. The device has charac-  
teristics that bridge the performance between the LT1229  
and LT1207 dual current feedback amplifiers. The LT1229  
has 30mA output drive, 100MHz bandwidth and 12mA  
supply current. The LT1207 has 250mA output drive,  
60MHz bandwidth and 40mA supply current.  
U
APPLICATIONS  
■
Twisted-Pair Drivers  
Video Amplifiers  
■
■
Cable Drivers  
■
Test Equipment Amplifiers  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
■
Buffers  
U
TYPICAL APPLICATION  
HDSL2 Single Pair Line Driver  
2nd and 3rd Harmonic Distortion of  
HDSL2 Single Pair Line Driver  
560Ω  
–40  
V
V
V
= ±5V  
S
= ±1.25V  
IN  
OUT  
560Ω  
–
= ±2.5V  
–50  
–60  
–70  
–80  
–90  
68.1Ω  
1/2 LT1497  
+
V
IN  
1:1*  
560Ω  
560Ω  
2ND  
3RD  
135Ω  
–
*MIDCOM 671-7807  
68.1Ω  
1/2 LT1497  
+
100k  
1M  
2M  
FREQUENCY (Hz)  
1419 TA01  
1497 TA02  
1
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