MAX9505EEE+

Video Amps And Modules Overview

The MAX9505EEE+ is a DirectDrive video amplifier with an integrated reconstruction filter and analog switch. It operates from a single 2.7V to 3.6V supply, providing 6dB gain and shifting the video black level to ground. The device features a six-pole Butterworth lowpass filter for DAC output smoothing, achieving 50dB attenuation at 27MHz. An internal analog switch interfaces with multimedia jacks, offering configurable input/output modes. It includes a charge pump and linear regulator to generate a negative supply for sync signals below ground.

Video Amps And Modules Feature Summary

• DirectDrive technology eliminates large output-coupling capacitors by creating a clean negative supply via an integrated charge pump and linear regulator.
• Integrated six-pole Butterworth reconstruction filter smooths DAC steps and reduces signal spikes while maintaining passband flatness.
• Internal analog switch allows flexible configuration of multimedia jack poles for video input, video output, or microphone input.
• Low-power shutdown mode significantly reduces quiescent current consumption for battery-operated portable applications.

Video Amps And Modules Applications

• Mobile phones and smartphones
• Space-constrained audio/video portable devices

Video Amps And Modules Procurement Notes

Verify the specific package variant (QSOP-16 or TQFN) required for your design, as the MAX9505EEE+ suffix specifically denotes the 16-pin QSOP package. Confirm that the operating temperature range of -40°C to +85°C aligns with your system requirements. Ensure proper power-supply bypassing and grounding techniques are implemented to maintain signal integrity and minimize switching noise coupling into the video path.

Video Amps And Modules Selection Notes

Select this component when space constraints prohibit the use of large external output-coupling capacitors typically required for AC-coupled video outputs. It is suitable for designs requiring direct connection to video DACs without DC level shifting issues. Consider the internal analog switch functionality if multiplexing between video and audio signals on a single connector is necessary. Verify that the 6dB voltage gain meets the amplitude requirements of your downstream display or processing stage.

Video Amps And Modules Part Context

The MAX9505 belongs to Maxim Integrated's DirectDrive family of video amplifiers designed to simplify standard-definition video signal conditioning. Unlike traditional AC-coupled solutions, it integrates the necessary negative supply generation internally. This integration reduces the bill of materials and board space by removing bulky capacitors. The device complements other video interface components in mobile and portable electronics systems.

Video Amps And Modules Replacement Considerations

Check for MAX9505 variants with different package codes, such as MAX9505ETE+ for the TQFN package, if footprint compatibility differs. Review newer generations of DirectDrive video amplifiers from Analog Devices/Maxim for potential upgrades in performance or packaging density.

Video Amps And Modules FAQ

How does the MAX9505 handle the video black level?

The MAX9505 uses DirectDrive technology to set the video black level directly to ground, eliminating the need for series output capacitors that can cause level shifts based on picture content.

What is the function of the MODE0 and MODE1 pins?

MODE0 and MODE1 are logic inputs that control the operating mode of the device, allowing selection between shutdown, extended-range switch, video output, and normal switch modes.

Can the MAX9505 drive a load directly shorted to ground?

Yes, the MAX9505 features internal short-circuit protection to prevent device damage if the amplifier output is directly shorted to a supply or ground.