LT6557 - 500MHz, 2200V/µs Gain of 2, Single Supply Triple Video Amplifier with Input Bias Control


  • –3dB Small-Signal Bandwidth: 500MHz
  • –3dB 2VP-P Large-Signal Bandwidth: 400MHz
  • Slew Rate: 2200V/µs
  • Fixed Gain of 2, No External Resistors Required
  • AC Coupling with Programmable DC Input Bias
  • Output Swings to 0.8V of Supply Rails
  • Full Video Swing with 5V Single Supply
  • Diff Gain: 0.02%
  • Diff Phase: 0.05°
  • Shutdown Pin
  • High Output Current: ±100mA
  • Supply Range: 3V to 7.5V
  • Operating Temperature Range: –40°C to 85°C
  • Available in 16-Lead SSOP and 5mm × 3mm DFN Packages

Typical Application

LT6557 Typical Application
LT6557 Typical Application


The LT6557 is a high speed triple video amplifier with an internal fixed gain of 2 and a programmable DC input bias voltage. This amplifier features a 400MHz 2VP-P signal bandwidth, 2200V/µs slew rate and a unique ability to drive heavy output loads to 0.8V of the supply rails, making the LT6557 ideal for a single 5V supply, wideband video application. With just one resistor, the inputs of all three amplifi ers can be programmed to a common voltage level, simplifying and reducing the need for external circuitry in the AC-coupled applications. Without the programmable resistor, the input bias circuit becomes inactive, allowing the use of an external clamp circuit or direct coupled input.

The LT6557 has separate power supply and ground pins for each amplifi er to improve channel separation and to ease power supply bypassing. The LT6557 provides uncompromised performance in many high speed applications where a low voltage, single supply is required.

The LT6557 is available in 16-lead SSOP and 5mm × 3mm DFN packages.


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
LT6557CDHC#PBF 5x3 DFN-16 DHC C 05-08-1706 Yes
LT6557CDHC#TRPBF 5x3 DFN-16 DHC C 05-08-1706 Yes
LT6557CGN#PBF SSOP-16 GN C 05-08-1641 (GN16) Yes
LT6557CGN#TRPBF SSOP-16 GN C 05-08-1641 (GN16) Yes
LT6557IDHC#PBF 5x3 DFN-16 DHC I 05-08-1706 Yes
LT6557IDHC#TRPBF 5x3 DFN-16 DHC I 05-08-1706 Yes
LT6557IGN#PBF SSOP-16 GN I 05-08-1641 (GN16) Yes
LT6557IGN#TRPBF SSOP-16 GN I 05-08-1641 (GN16) Yes

LT6557 Package Drawing
LT6557 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
LT6557CDHC#PBF 5x3 DFN-16 C $3.57 $2.50 Yes
LT6557CDHC#TRPBF 5x3 DFN-16 C $2.55 Yes
LT6557CGN#PBF SSOP-16 C $3.57 $2.50 Yes
LT6557CGN#TRPBF SSOP-16 C $2.55 Yes
LT6557IDHC#PBF 5x3 DFN-16 I $4.29 $3.00 Yes
LT6557IDHC#TRPBF 5x3 DFN-16 I $3.05 Yes
LT6557IGN#PBF SSOP-16 I $4.29 $3.00 Yes
LT6557IGN#TRPBF SSOP-16 I $3.05 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.

Part Number Description Price Documentation
DC1016A-A Demoboard for LT6557 $50.00
DC1016A-B LTC6557/LT6558 550 MHz Gain of 1 Single Supply Triple Video Amplifier / Differential Driver/Receiver / Programmable Data Acquisition Measurement and Control System $50.00
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Click here to view our complete list of demo boards


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