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1.8V, DirectDrive Video Filter Amplifier with Load Detection and Dual SPST Analog Switches

Ultra-Low-Power, Built-In Load-Detect Feature Intelligently Detects and Reports Change of Video Output Load Status

Product Details

Key Features

Simplified Block Diagram

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Key Features

  • 1.8V or 2.5V Single-Supply Operation
  • Low Power Consumption (5.8mW Quiescent, 11.7mW Average)
  • Video Load Detection
  • DirectDrive Sets Video Output Black Level Near Ground
  • Dual SPST Analog Switches
  • Transparent Input Sync-Tip Clamp
  • I²C Control

Applications/Uses

  • Mobile Phones
  • Portable Media Players (PMP)

Description

The MAX9507 amplifies and filters standard-definition video signals and only consumes 5.8mW quiescent power and 11.7mW average power. The MAX9507 leverages Maxim's DirectDrive™ technology to generate a clean, internal negative supply. Combining the internal negative power supply with the external positive 1.8V supply, the MAX9507 is able to drive a 2VP-P video signal into a 150Ω load.

The MAX9507 provides an I²C interface for easy configuration and access to the load status. The MAX9507 can detect, report, and act upon the change of a video load. This feature helps reduce overall power consumption by allowing the system to turn on the video encoder and driver only when a video load is connected to the MAX9507.

With a high power-supply rejection ratio (47dB at 100kHz), the MAX9507 can be powered directly from a 1.8V digital supply. The two integrated single-pole/single-throw (SPST) analog switches are ideal for routing audio, video, or digital signals.

The input of the MAX9507 can be directly connected to the output of a video DAC. The MAX9507 also features a transparent input sync-tip clamp, allowing AC-coupling of input signals with different DC biases.

The MAX9507 has an internal fixed gain of 8. The input full-scale video signal is nominally 0.25VP-P, and the output full-scale video signal is nominally 2VP-P.

Simplified Block Diagram

MAX9507: Block Diagram MAX9507: Block Diagram Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .