LT1497 - Dual 125mA, 50MHz Current Feedback Amplifier

Features

  • 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 øJA 16-Pin SO Package)
  • Enhanced øJA SO-8 Package for ±5V Operation
  • 0.02% Differential Gain: Av = 2, RL = 150ohms
  • 0.015° Differential Phase: Av = 2, RL = 150ohms
  • ±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

Typical Application

LT1497 Typical Application
LT1497 Typical Application

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 ±100mA with only 1.9V of headroom. Twisted pairs can be driven differentially with ?70dBc distortion up to 1MHz for ±40mA peak signals. 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 characteristics 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.

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
Drawing
RoHS
LT1497CS#PBF SO-16 S C 05-08-1610 (S16) Yes
LT1497CS#TRPBF SO-16 S C 05-08-1610 (S16) Yes
LT1497CS8#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1497CS8#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes


LT1497 Package Drawing
LT1497 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LT1497CS#PBF SO-16 C $4.85 $4.05 Yes
LT1497CS#TRPBF SO-16 C $4.11 Yes
LT1497CS8#PBF SO-8 C $4.05 $3.35 Yes
LT1497CS8#TRPBF SO-8 C $3.41 Yes
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Click here to view our complete list of demo boards

Applications

  • Twisted-Pair Drivers
  • Video Amplifiers
  • Cable Drivers
  • Test Equipment Amplifiers
  • Buffers

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Design Tools

LTspice

LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice

Models for the following parts are available in LTspice:
LT1497

Technical Support