Datasheet LT1497 (Analog Devices)
| 制造商 | Analog Devices |
| 描述 | Dual 125mA, 50MHz Current Feedback Amplifier |
| 页数 / 页 | 12 / 1 — FEATURES. DESCRIPTION. Minimum Output Current:. 125mA. Maximum Supply … |
| 文件格式/大小 | PDF / 265 Kb |
| 文件语言 | 英语 |
FEATURES. DESCRIPTION. Minimum Output Current:. 125mA. Maximum Supply Current per Amp: 7mA, VS =. Bandwidth: 50MHz, VS =. 15V
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LT1497 Dual 125mA, 50MHz Current Feedback Amplifier
U FEATURES DESCRIPTION
■
Minimum Output Current:
±
125mA
The LT®1497 dual current feedback amplifier features low ■
Maximum Supply Current per Amp: 7mA, VS =
±
5V
power, high output drive, excellent video characteristics ■
Bandwidth: 50MHz, VS =
±
15V
and outstanding distortion performance. From a low 7mA ■ Slew Rate: 900V/µs, VS = ±15V maximum supply current per amplifier, the LT1497 drives ■ Wide Supply Range: VS = ±2.5V to ±15V ±100mA with only 1.9V of headroom. Twisted pairs can be (Enhanced θJA 16-Pin SO Package) driven differentially with – 70dBc distortion up to 1MHz for ■ Enhanced θJA SO-8 Package for ±5V Operation ±40mA peak signals. ■ 0.02% Differential Gain: AV = 2, RL = 150Ω The LT1497 is available in a low thermal resistance 16-pin ■ 0.015° Differential Phase: AV = 2, RL = 150Ω SO package for operation with supplies up to ±15V. For ■ ±13V Output Swing: IL = 100mA, VS = ±15V ±5V operation the device is also available in a low thermal ■ ±3.1V Output Swing: IL = 100mA, VS = ±5V resistance SO-8 package. The device has thermal and ■ 55ns Settling Time to 0.1%, 10V Step current limit circuits that protect against fault conditions. ■ Thermal Shutdown Protection The LT1497 is manufactured on Linear Technology’s
U
complementary bipolar process. The device has charac-
APPLICATIONS
teristics that bridge the performance between the LT1229 ■ and LT1207 dual current feedback amplifiers. The LT1229 Twisted-Pair Drivers has 30mA output drive, 100MHz bandwidth and 12mA ■ Video Amplifiers ■ supply current. The LT1207 has 250mA output drive, Cable Drivers ■ 60MHz bandwidth and 40mA supply current. 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 VS = ±5V V 560Ω – IN = ±1.25V – 50 VOUT = ±2.5V 68.1Ω 1/2 LT1497 + V – 60 IN 1:1* 560Ω – 70 135Ω 2ND 560Ω DISTORTION (dBc) 3RD – – 80 68.1Ω *MIDCOM 671-7807 1/2 LT1497 + – 90 100k 1M 2M FREQUENCY (Hz) 1419 TA01 1497 TA02 1
U FEATURES DESCRIPTION
■
Minimum Output Current:
±
125mA
The LT®1497 dual current feedback amplifier features low ■
Maximum Supply Current per Amp: 7mA, VS =
±
5V
power, high output drive, excellent video characteristics ■
Bandwidth: 50MHz, VS =
±
15V
and outstanding distortion performance. From a low 7mA ■ Slew Rate: 900V/µs, VS = ±15V maximum supply current per amplifier, the LT1497 drives ■ Wide Supply Range: VS = ±2.5V to ±15V ±100mA with only 1.9V of headroom. Twisted pairs can be (Enhanced θJA 16-Pin SO Package) driven differentially with – 70dBc distortion up to 1MHz for ■ Enhanced θJA SO-8 Package for ±5V Operation ±40mA peak signals. ■ 0.02% Differential Gain: AV = 2, RL = 150Ω The LT1497 is available in a low thermal resistance 16-pin ■ 0.015° Differential Phase: AV = 2, RL = 150Ω SO package for operation with supplies up to ±15V. For ■ ±13V Output Swing: IL = 100mA, VS = ±15V ±5V operation the device is also available in a low thermal ■ ±3.1V Output Swing: IL = 100mA, VS = ±5V resistance SO-8 package. The device has thermal and ■ 55ns Settling Time to 0.1%, 10V Step current limit circuits that protect against fault conditions. ■ Thermal Shutdown Protection The LT1497 is manufactured on Linear Technology’s
U
complementary bipolar process. The device has charac-
APPLICATIONS
teristics that bridge the performance between the LT1229 ■ and LT1207 dual current feedback amplifiers. The LT1229 Twisted-Pair Drivers has 30mA output drive, 100MHz bandwidth and 12mA ■ Video Amplifiers ■ supply current. The LT1207 has 250mA output drive, Cable Drivers ■ 60MHz bandwidth and 40mA supply current. 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 VS = ±5V V 560Ω – IN = ±1.25V – 50 VOUT = ±2.5V 68.1Ω 1/2 LT1497 + V – 60 IN 1:1* 560Ω – 70 135Ω 2ND 560Ω DISTORTION (dBc) 3RD – – 80 68.1Ω *MIDCOM 671-7807 1/2 LT1497 + – 90 100k 1M 2M FREQUENCY (Hz) 1419 TA01 1497 TA02 1