LT1204 - 4-Input Video Multiplexer with 75MHz Current Feedback Amplifier


  • 0.1dB Gain Flatness > 30MHz
  • Channel Separation at 10MHz: 90dB
  • Input 40mV Switching Transient, Input Referred
  • ?3dB Bandwidth, AV = 2, RL = 150 ohms: 75MHz
  • Channel-to-Channel Switching Time: 120ns
  • Easy to Expand for More Inputs
  • Large Input Range: ±6V
  • 0.04% Differential Gain, RL = 150 ohms
  • 0.06° Differential Phase, RL = 150 ohms
  • High Slew Rate: 1000V/µs
  • Output Swing, RL = 400 ohms: ±13V
  • Wide Supply Range: ±5V to ±15V

Typical Application

LT1204 Typical Application
LT1204 Typical Application


The LT®1204 is a 4-input video multiplexer designed to drive 75 ohms cables and easily expand into larger routing systems. Wide bandwidth, high slew rate, and low differential gain and phase make the LT1204 ideal for broadcast quality signal routing. Channel separation and disable isolation are greater than 90dB up to 10MHz. The channel-to-channel output switching transient is only 40mVP-P, with a 50ns duration, making the transition imperceptible on high quality monitors. A unique feature of the LT1204 is its ability to expand into larger routing matrices. This is accomplished by a patent pending circuit that bootstraps the feedback resistors in the disable condition, raising the true output impedance of the circuit. The effect of this feature is to eliminate cable misterminations in large systems. The large input and output signal levels supported by the LT1204 when operated on ±15V supplies make it ideal for general purpose analog signal selection and multiplexing. A shutdown feature reduces the supply current to 1.5mA.


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
LT1204CN#PBF N-16 N C 05-08-1510 (N16) Yes
LT1204CSW#PBF SW-16 SW C 05-08-1620 (SW16) Yes
LT1204CSW#TRPBF SW-16 SW C 05-08-1620 (SW16) Yes

LT1204 Package Drawing
LT1204 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
LT1204CN#PBF N-16 C $6.00 $4.80 Yes
LT1204CSW#PBF SW-16 C $6.50 $5.25 Yes
LT1204CSW#TRPBF SW-16 C $5.31 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


  • Broadcast Quality Video Multiplexing
  • Large Matrix Routing
  • Medical Imaging
  • Large Amplitude Signal Multiplexing
  • Programmable Gain Amplifiers

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