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Quad Video (Filter) Amplifiers with Input Sync-Tip Clamps

Support VGA and Standard-Definition Video Signals

Product Details

Key Features

Simplified Block Diagram

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Key Features

  • Quad Channel
  • 9.5MHz, ±1dB Passband (MAX9658)
  • 47dB Attenuation at 27MHz (MAX9658)
  • Fixed Gain of 2V/V
  • Low Power: 21mA
  • 2.7V to 3.6V Single-Supply Operation

Applications/Uses

  • Digital Video Recorders
  • Set-Top Boxes

Description

The MAX9657 is a small, low-power, quad video amplifier with input sync-tip clamps. It features a bandwidth of 15MHz, making it suitable for not only standard-definition video signals, but also video graphics array (VGA) signals with a 640 x 480 resolution at up to 85Hz refresh rate.

The MAX9658 is a quad video amplifier with integrated lowpass filters and input sync-tip clamps. The lowpass filters typically have ±1dB passband flatness out to 9.5MHz and 47dB attenuation at 27MHz. Specially suited for composite video signals, the MAX9658 is ideal for performing anti-alias filtering at the inputs of a digital video recorder or for performing reconstruction filtering at the outputs of a SCART set-top box.

Both devices require that the incoming video signals be AC-coupled to the inputs. The input sync-tip clamps set the internal DC level of the video signals.

The amplifiers have 2V/V gain, and the outputs can be DC-coupled to a 75Ω load, which is the equivalent of two video loads, or AC-coupled to a 150Ω load.

Both the MAX9657/MAX9658 feature a low-power shutdown mode, in which supply current is reduced to 35µA.

The MAX9657/MAX9658 operate from a single 2.7V to 3.6V supply, are specified over the -40°C to +125°C automotive temperature range, and are offered in a small, 16-pin QSOP package.

Simplified Block Diagram

MAX9657, MAX9658: Functional Diagram MAX9657, MAX9658: Functional 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 .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.