LT1227 - 140MHz Video Current Feedback Amplifier

Features

  • 140MHz Bandwidth: AV = 2, RL = 150 ohms
  • 1100V/µs Slew Rate
  • Low Cost
  • 30mA Output Drive Current
  • 0.01% Differential Gain
  • 0.01° Differential Phase
  • High Input Impedance: 14M ohms, 3pF
  • Wide Supply Range: ±2V to ±15V
  • Shutdown Mode: IS <250µA
  • Low Supply Current: IS = 10mA
  • Inputs Common Mode to Within 1.5V of Supplies
  • Outputs Swing Within 0.8V of Supplies

Typical Application

LT1227 Typical Application
LT1227 Typical Application

Description

The LT1227 is a current feedback amplifier with wide bandwidth and excellent video characteristics. The low differential gain and phase, wide bandwidth, and 30mA output drive current make the LT1227 well suited to drive cables in video systems.

A shutdown feature switches the device into a high impedance, low current mode, allowing multiple devices to be connected in parallel and selected. Input to output isolation in shutdown is 70dB at 10MHz for input amplitudes up to 10VP-P. The shutdown pin interfaces to open collector or open drain logic and takes only 4mµ to enable or disable.

The LT1227 comes in the industry standard pinout and can upgrade the performance of many older products. For a dual or quad version, see the LT1229/1230 data sheet.

The LT1227 is manufactured on Linear Technology’s proprietary complementary bipolar process.

 

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
LT1227CN8#PBF N-8 N C 05-08-1510 (N8) Yes
LT1227CS8#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1227CS8#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1227MJ8 CERDIP-8 J M 05-08-1110 (J8) No


LT1227 Package Drawing
LT1227 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
LT1227CN8#PBF N-8 C $3.08 $2.40 Yes
LT1227CS8#PBF SO-8 C $3.58 $2.85 Yes
LT1227CS8#TRPBF SO-8 C $2.91 Yes
LT1227MJ8 CERDIP-8 M $43.95 No
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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.

Part Number Description Price Documentation
DC417B DIP8, MS8, S8, SOT23-6 | Multi-Footprint General Purpose Board for Single Op. Amp $25.00
Buy Now
Click here to view our complete list of demo boards

Applications

  • Video Amplifiers
  • Cable Drivers
  • RGB Amplifiers
  • Test Equipment Amplifiers
  • 50 Ohms Buffers for Driving Mixers

Product Notifications

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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:
LT1227

Technical Support