Features and Benefits
- –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
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 ampliﬁers 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 ampliﬁer 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.
- LCD Video Projectors
- RGB HD Video Ampliﬁers
- Coaxial Cable Drivers
- Low Supply ADC Drivers
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (2)
DC1016A-B Demo Board for:
LT6557 500MHz, 2200V/µs Gain of 2, Single Supply Triple Video Amplifier with Input Bias Control
LT6558 550MHz, 2200V/µs Gain of 1, Single Supply Triple Video Amplifier with Input Bias Control
Tools & Simulations
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Models for the following parts are available in LTspice:
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
Sample & Buy
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 Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.