HFA1412IPZ

Instrumentation, Op Amps, Buffer Amps Overview

The HFA1412IPZ is a quad, 350MHz, low power, programmable gain buffer amplifier manufactured by Renesas Electronics Corporation. It features user-selectable closed-loop gains of +1, -1, or +2 without external resistors. The device operates on a supply voltage range of ±4.5V to ±5.5V with a typical supply current of 5.9mA per amplifier. Key electrical specifications include a 350MHz bandwidth at AV=+2, a slew rate of up to 1700V/µs, and an output current capability of 55mA. It utilizes a 14-pin PDIP package.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Integrated on-chip gain setting resistors eliminate the need for external components, saving board space and minimizing parasitic feedback capacitance.
• User-programmable closed-loop voltage gains of +1, -1, or +2 selected via input connections.
• High-speed video performance characterized by excellent gain flatness and low differential gain/phase specifications.
• Current feedback architecture provides high bandwidth and slew rate while maintaining low supply current consumption.

Instrumentation, Op Amps, Buffer Amps Applications

• Video distribution amplifiers
• Flash A/D drivers
• Video cable drivers
• Video switchers and routers
• Medical imaging systems

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify component authenticity through authorized channels as the HFA1412IPZ is marked as obsolete. Confirm RoHS compliance status and check for available replacement alternatives from the manufacturer's technical support center before finalizing procurement plans.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component for designs requiring high-speed buffering with flexible gain configurations. Ensure PCB layout adheres to high-frequency guidelines, utilizing solid ground planes and minimizing parasitic capacitance at the inverting input to maintain stability and performance.

Instrumentation, Op Amps, Buffer Amps Part Context

The HFA1412 belongs to the Intersil/Renesas HFA series of high-speed video amplifiers. It is designed to replace standard operational amplifiers in video applications, offering improved performance through integrated gain settings and optimized internal feedback networks for signal integrity.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Refer to the HFA1412/883 data sheet for military-grade versions. Contact the Technical Support Center for recommended replacements as no direct substitute is listed.

Instrumentation, Op Amps, Buffer Amps FAQ

How is the closed-loop gain configured?

Gain selection is achieved by connecting the inputs: applying the signal to +IN with -IN floating selects +1; grounding -IN selects +2; applying the signal to -IN with +IN grounded via a 50Ω resistor selects -1.

What are the considerations for unity gain configuration?

Floating the -Input can cause high-frequency peaking due to stray capacitance. Recommended implementations include shorting inputs, adding a 620Ω series resistor, or using a capacitor between inputs to ensure stability.