HFA1245
Dual, 420MHz, Low Power, Video, Current Feedback Operational Amplifier with Disable
Not Recommended for New Designs.Contact our Technical Support Center at 1-888-INTERSIL.
Typical Diagram
Key Features
- Low Supply Current 5.8mA/Op Amp
- High Input Impedance 2MΩ
- Low Crosstalk (5MHz) -83dB
- High Off Isolation (5MHz) 65dB
- Wide -3dB Bandwidth (AV = +2) 420MHz
- Very Fast Slew Rate 1200V/µs
- Gain Flatness (to 50MHz) ±0.11dB
- Differential Gain 0.02%
- Differential Phase 0.03 Degrees
- Individual Output Enable/Disable
- Output Enable/Disable Time 150ns/30ns
- Pin Compatible Upgrade to HA5022
Description
The HFA1245 is a dual, high speed, low power current feedback amplifier built with Intersil's proprietary complementary bipolar UHF-1 process.
The HFA1245 features individual TTL/CMOS compatible disable controls. When pulled low they disable the corresponding amplifier, which reduces the supply current and forces the output into a high impedance state. This feature allows easy implementation of simple, low power video switching and routing systems. Component and composite video systems also benefit from this op amp's excellent gain flatness, and good differential gain and phase specifications.
Multiplexed A/D applications will also find the HFA1245 useful as the A/D driver/multiplexer.
The HFA1245 is a low power, high performance upgrade for the popular Intersil HA5022. For a dual amplifier without disable, in a standard 8 lead pinout, please see the HFA1205 data sheet.
Applications
- Flash A/D Drivers
- High Resolution Monitors
- Video Multiplexers
- Video Switching and Routing
- Professional Video Processing
- Video Digitizing Boards/Systems
- Multimedia Systems
- RGB Preamps
- Medical Imaging
- Hand Held and Miniaturized RF Equipment
- Battery Powered Communications
- High Speed Oscilloscopes and Analyzers
