MAXIM Manuals

The MAX7450/MAX7451/MAX7452 complete front-end video-signal conditioners are designed to improve the quality of standard-definition video signals.

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The MAX7428/MAX7430/MAX7432A filters are low-cost, high-performance replacements for standard discrete filter and buffer solutions. They are ideal for anti-aliasing and DAC smoothing video applications, when analog video is reconstructed from a digital data stream. These devices require a single +5V supply and the filters have a cutoff frequency optimized for NTSC, PAL, and standard definition digital TV (SDTV) video signals. The MAX7428/MAX7430/MAX7432A feature Maxim’s single-pin bus (MSPB™) interface to digitally control channel selection (IN_A or IN_B), adjust high-frequency boost, bypass the filter, configure luma vs. chroma operation, and control the output disable. The MAX7428 single-channel filter is ideal for composite (CVBS) video signals. The MAX7430 dual filter is optimized for S-Video (Y/C) applications. The MAX7432A triple filter is optimized for component (YPbPr or embedded synchronous RGB) video signals. The MAX7428 is available in a tiny 8-pin SOT23 package, the MAX7430 is available in a miniature 10-pin µMAX® package, and the MAX7432A is available in a 14-pin TSSOP package. The MAX7428/MAX7430/MAX7432A are fully specified over the -40°C to +85°C extended temperature range.

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MAX7440/MAX7441/MAX7442 6-Channel Integrated Video Reconstruction Filters

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The MAX9502 is a small, low-power video amplifier with integrated reconstruction filter that operates from a supply voltage as low as 2.5V.

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The MAX4079 filters and buffers video (NTSC/PAL/DVB) and stereo audio signals from the MPEG decoder of a cable/satellite receiver, VCR/DVD player, or a TV to an external load

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MAX7462/MAX7463 are single-channel, standard-definition, integrated video reconstruction filters and buffers that are ideal for anti-aliasing and digital-to-analog smoothing video applications or wherever analog video is reconstructed from digital data (such as cable/satellite/terrestrial set-top boxes and DVRs).

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MAX9500/MAX9501 are integrated circuits for filtering and buffering HDTV signals

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The MAX9508 video filter amplifier with SmartSleep and bidirectional video support is ideal for set-top boxes (STBs), portable DVD players, and portable media players (PMPs). The inputs can be directly connected to the digital-to-analog converter (DAC) outputs. The reconstruction filter removes high-frequency signals above 6.75MHz. The amplifiers have 6dB of gain, and the outputs can be DC-coupled to a load of 75Ω, which is equivalent to two video loads, or it can be AC-coupled to a load of 150Ω. The SmartSleep circuitry intelligently reduces power consumption based on the presence of the input signal and the output loads. When the MAX9508 does not detect the presence of sync on the input video signal, the supply current is reduced to less than 7µA. The device only enables a video amplifier when there is an active video input signal and an attached load. The video amplifier remains on while a load is connected. If the load is disconnected, the video amplifier is turned off. The MAX9508 contains three reconstruction filters, four video amplifiers, and a pulldown switch at one of the two CVBS outputs. The MAX9508 has the ability to control the bidirectional video signals at the CVBS video connections without the need for separate switches or relays. This feature is particularly useful for portable DVD players, which often use the same connector to drive a composite video output and to accept an external video signal to display on the LCD panel.

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The MAX7457 4-channel video switch is ideal for anti-aliasing and DAC-smoothing video applications or wherever analog video is reconstructed from a digital data stream such as cable/satellite/terrestrial set-top boxes (STBs), DVD players, hard disk recorders (HDRs), and personal video recorders (PVRs). The MAX7457 filters and buffers CVBS and RGB video signals, making it ideal for dual SCART (peritelevision) STBs with an auxiliary CVBS input. The MAX7457 operates from a single +5V supply and has a flat passband out to 5MHz with a stopband attenuation of 43dB at 27MHz, making it ideal for NTSC, PAL, and standard-definition digital TV (SDTV) video systems. The MAX7457 output buffers have a fixed gain of +6dB and are capable of driving two standard 150Ω video loads. The channel for CVBS video has high-frequency boost circuitry that enhances picture sharpness with up to +1.2dB of gain boost without degradation in the stopband. The video output drivers can be disabled by an external control input. The MAX7457 is available in a 16-pin, 5mm x 5mm x 0.8mm TQFN package, and is specified over the extended (-40°C to +85°C) temperature range.

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The MAX9507 amplifies and filters standard-definition video signals with low power consumption, video load detection, and internal negative power supply.

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The MAX7453 is a low-cost, triple-channel video reconstruction filter for S-video and CVBS video-signal applications. This device is ideal for anti-aliasing and DAC smoothing video applications such as set-top boxes, DVD players, hard-disk recorders (HDRs), and personal video recorders.

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The MAX11501/MAX11502 integrated filters offer three channels of 5th-order filters for standard-definition video and include +6dB output buffers on each chan- nel. These video filters are ideal for anti-aliasing and DAC smoothing in applications such as set-top boxes, security systems, digital video recorders (DVRs), DVD players, and personal video recorders. The MAX11501/MAX11502 video inputs feature a trans- parent clamp compatible with AC- and DC-coupled input signals and allow DAC outputs to be directly cou- pled. The 5th-order filters provide a typical -3dB band- width of 8.6MHz (MAX11501) and 8.9MHz (MAX11502) and offer either a flat passband response (MAX11501) or a +0.8dB peaking passband response (MAX11502) on all channels. Each channel includes an output buffer with a gain of +6dB capable of driving a full 2VP-P video signal into two standard 150Ω (75Ω back-terminated) video loads. The buffers drive either AC- or DC-coupled loads and assure a blanking level of below 1V after the back- match resistor. The MAX11501/MAX11502 operate from a single +5V supply and are available in the upper commercial 0°C to +85°C temperature range. These devices are avail- able in small 8-pin SO packages.

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The MAX11500 is a three-channel, high-definition (HD) video filter integrated circuit that includes input video clamps and output buffers. This device is ideal for anti-aliasing and DAC smoothing video applications such as set-top boxes, hard-disk recorders (HDRs), DVD players, and personal video recorders. The 6th-order channel filters have a typical -3dB bandwidth of 33MHz. Each channel has an output buffer with a gain of +6dB and can drive a full 2VP-P video signal into one standard 150Ω video load. These buffers can drive either an AC- or DC-coupled load such that the blanking level voltage after the backmatch resistor is less than 1V. The video inputs feature a transparent clamp for AC- and DC-coupled input signals. If the input signal does not go below ground, the input clamp is inactive, thus enabling DAC outputs to be DC-coupled to the input. The device operates from a single +5V supply, is offered in the upper commercial 0°C to +85°C temperature range, and is available in a small 8-pin SO package.

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The MAX9586–MAX9589 are small, low-power, multi-channel video amplifiers with integrated reconstruction filters and input clamps. Specially suited for standard-definition video signals, these devices are ideal for a wide range of television and set-top box applications. The video signals from the outputs of a digital-to-analog converter (DAC) are AC-coupled to the inputs of the MAX9586–MAX9589. External video signals, in which the DC bias is usually not known, can also be AC-coupled to the inputs of the MAX9586–MAX9589. The input sync-tip clamps set the DC level of composite video or luma signals, and the input bias circuits set the DC level of chroma signals. The reconstruction filter typically has ±1dB passband flatness at 8.5MHz and 55dB attenuation at 27MHz. 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. The MAX9586–MAX9589 operate from a 2.7V to 3.6V single supply and are specified over the -40°C to +125°C automotive temperature range. The MAX9586–MAX9589 are offered in small SOT23 and µMAX® packages.

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MAX9583/MAX9584/MAX9585 are small, low-power, multichannel video amplifiers with integrated reconstruction filters. Specially suited for standard-definition video signals, these devices are ideal for a wide range of television, set-top box, and portable applications. The MAX9583/MAX9584/MAX9585 inputs can be directly connected to the outputs of a video digital-to- analog converter (DAC). The reconstruction filter typical- ly has ±1dB passband flatness at 8.5MHz and 55dB attenuation at 27MHz. The amplifiers have a 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. The MAX9583/MAX9584/MAX9585 operate from a 2.7V to 3.6V single supply and are specified over the -40°C to +125°C automotive temperature range. The MAX9583 is offered in a small, 6-pin thin SOT23 package. The MAX9584 is offered in a small, 8-pin µMAX® package, and the MAX9585 is offered in a small, 10-pin µMAX package. Applications: Set-Top Boxes, Televisions, Portable Devices

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The MAX9516 is a video signal amplifier that operates at 1.8V from a single power supply. It is characterized by low power consumption and DirectDrive technology. It can drive a 2VP-P video signal into a 150Ω load and reduce power consumption when no load is present. The MAX9516 also has the ability to detect and report changes in the video load, helping to reduce overall system power consumption. It utilizes DirectDrive technology, which includes an integrated charge pump and internal linear regulator to create a clean negative power supply, allowing the amplifier to set the output video black level near ground. The MAX9516 also features an internal reconstruction filter that smooths the video signal and reduces spikes and steps from the video digital-to-analog converter.

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The MAX9517/MAX9524 are low-power video amplifiers with integrated reconstruction filters. Specially suited for standard-definition video signals, such as composite and luma, these devices are ideal for a wide range of applications such as cell phones and security/CCTV cameras. Video signals should be DC-coupled into the MAX9517 input and AC-coupled into the MAX9524 input. The MAX9517/MAX9524 have two single-pole, single-throw (SPST) analog switches that can be used to route stereo audio, video, or digital signals. The reconstruction filter typically has ±1dB passband flatness at 9MHz and 52dB attenuation at 27MHz. The amplifiers have a gain of 2V/V, and the outputs can be DC-coupled to a load of 75Ω, which is equivalent to two video loads. The outputs can be AC-coupled to a load of 150Ω, which is equivalent to one video load. The MAX9517/MAX9524 operate from a 2.7V to 3.6V single supply and are specified over the -40°C to +125°C automotive temperature range. The MAX9517/MAX9524 are available in a small 12-pin TQFN (3mm x 3mm) package.

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The MAX11503 is a low-power video amplifier with a Y/C summer and chroma mute. The device accepts an S-video or Y/C input and sums the luma (Y) and chroma (C) signals into a composite CVBS signal which can be connected directly to a TV monitor. The MAX11503 drives two terminated 75Ω video coax cables. The MAX11503 features include chroma mute, power save, and SAG correction. Chroma mute disables the chroma buffer. If the device is used to combine Y and C signals in a camera application, the chroma mute may be used in low-light situations. This removes all chroma including burst which causes a downstream composite video decoder to interpret the video signal as luminance only, thus improving image quality. SAG correction allows small output capacitors to be used in AC-coupled output applications. The MAX11503 operates from a single 2.7V to 5.25V supply, is specified over the extended -40°C to +85°C temperature range, and is available in a small 8-pin µMAX® package.

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The MAX11506/MAX11507 integrated filters offer six channels, three for standard-definition (SD) video and three for either SD or high-definition (HD) video, and include +6dB output buffers on each channel. These video filters are ideal for anti-aliasing and DAC smoothing in applications such as set-top boxes, digital video recorders, DVD players, and personal video recorders. The MAX11506/MAX11507 video inputs feature a transparent clamp compatible with AC- and DC-coupled input signals and allow DAC outputs to be directly coupled. The filters provide -3dB bandwidth of 9.0MHz for the SD filters and 33MHz for the HD filters. Each channel includes an output buffer with a gain of +6dB capable of driving a full 2VP-P video signal into a 150Ω video load. The buffers drive either AC- or DC-coupled loads and assure a blanking level of below 1V after the backmatch resistor. DC-coupling eliminates bulky coupling capacitors. The MAX11506 offers a flat passband while the MAX11507 features 0.8dB peaking on the three SD-only channels to compensate for system roll-off. The MAX11506/MAX11507 operate from a single +5V supply and are available in the 0°C to +70°C commercial temperature grade. The MAX11506/MAX11507 are offered in the 16-pin QSOP package.

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The MAX9652/MAX9653/MAX9654 are 3.3V, triple-channel, high-definition (HD) video-filter amplifiers. Specially designed for YPbPr component video signals, these devices are ideal for a wide range of set-top box and portable applications. The inputs to the MAX9652/ MAX9653/MAX9654 are AC-coupled. YIN has a sync- tip clamp while PBIN and PRIN have keyed clamps. The output buffer has gain of 2V/V and drives a stan- dard back-terminated 75Ω video load. The passband of the MAX9654 is logic selectable between standard definition (SD) and high definition. The MAX9652/MAX9653 have a fixed passband for HD video. The MAX9654 SD lowpass filter has ±1dB passband out to 8.5MHz and 57dB attenuation at 27MHz. The MAX9652/MAX9653/MAX9654 HD lowpass filter have ±1dB passband out to 42MHz and 50dB attenuation at 109MHz. The devices consume only 9.5mA per channel and operate from a 3.3V supply. The MAX9653/MAX9654 feature a low-power, 12µA shutdown mode. The MAX9652/MAX9653/MAX9654 are specified over the -40°C to +125°C automotive temperature range.

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