Electronic information
Maxim launch HD filter / amplifier, suitable for many video applications
In Electronic Infomation Category: R | on December 1, 2010
Maxim (Maxim Integrated Products) today announced the industrys first high-definition video filter amplifiers MAX9500/MAX9501. As high-definition (HD) filters and DS1866Z datasheet and amplifiers, they 44.25MHz frequency has more than 40dB of attenuation, which is to 74.25MHz sampling rate required by HD video signals, can provide a good HD video signal filtering and DS1866Z price and buffering . The device can be used in set-top boxes, DVD recorders, DVD players and DS1866Z suppliers and satellite / cable receiver HD video output reconstruction filter is also used as high-definition television (HDTV) analog input anti-aliasing filter.
MAX9500/MAX9501 Both HD filters, amplifiers have the following characteristics:
1. attenuation 44.25MHz frequency after the "undesirable" aliasing signal
set-top boxes, DVD players and AV receivers Most MPEG decoders to 74.25MHz frequency re-HD video signals. However, due to the bandwidth HD video signal with a 30MHz, 44.25MHz frequency aliasing that I will have a great signal. So users need a filter, through the maximum 30MHz baseband video, but also the full attenuation 44.25MHz frequency after aliasing. Existing HD filters can not require the 30MHz signal, but also in the 44.25MHz frequency can only provide 15dB of attenuation, so that "undesirable" signal will reduce the mixing video quality.
MAX9500/MAX9501 provide 30MHz passband and 50dB at 44.25MHz frequency with attenuation, signal aliasing can be completely inhibited, and get the best video quality.
2. by a single set of output drive two loads
MAX9500/MAX9501 can drive two loads, to meet with two sets of HD component (Y / Pr / Pb) output of the set-top box users. IC can drive a typical output, respectively, if the user has two sets of output to the TV and VCR, will have to purchase two sets of drivers. MAX9500/MAX9501 allow the user to use the same driver driving two loads, without reducing performance. This feature can not only save costs, but also save additional space occupied by the drive circuit.
3. to provide a single power supply and dual power supply devices
MAX9500 +5 V single power supply used for the negative supply in the system without the user. Users can choose AC-coupled or DC-coupled output, the device has an internal DC bias, the program is very simple.
MAX9501 dual power supply with ± 5V, ± already in the system for power and do not want the user AC-coupled output. Maxim said most competitors offer only a single power amplifier, so the user must use their bulk output capacitor, so that the signal for the center, it will not only expensive, but will reduce the video quality. ± 5V supply with the MAX9501, without any capacitive coupling to the video signal for the center.
MAX9500/MAX9501 in a compact 5mm × 6mm, 16-pin QSOP and 16-pin SO package, while providing lead-free package, the device starts at $ 1.05 (1,000-up, FOB USA).
MAX9500/MAX9501 Both HD filters, amplifiers have the following characteristics:
1. attenuation 44.25MHz frequency after the "undesirable" aliasing signal
set-top boxes, DVD players and AV receivers Most MPEG decoders to 74.25MHz frequency re-HD video signals. However, due to the bandwidth HD video signal with a 30MHz, 44.25MHz frequency aliasing that I will have a great signal. So users need a filter, through the maximum 30MHz baseband video, but also the full attenuation 44.25MHz frequency after aliasing. Existing HD filters can not require the 30MHz signal, but also in the 44.25MHz frequency can only provide 15dB of attenuation, so that "undesirable" signal will reduce the mixing video quality.
MAX9500/MAX9501 provide 30MHz passband and 50dB at 44.25MHz frequency with attenuation, signal aliasing can be completely inhibited, and get the best video quality.
2. by a single set of output drive two loads
MAX9500/MAX9501 can drive two loads, to meet with two sets of HD component (Y / Pr / Pb) output of the set-top box users. IC can drive a typical output, respectively, if the user has two sets of output to the TV and VCR, will have to purchase two sets of drivers. MAX9500/MAX9501 allow the user to use the same driver driving two loads, without reducing performance. This feature can not only save costs, but also save additional space occupied by the drive circuit.
3. to provide a single power supply and dual power supply devices
MAX9500 +5 V single power supply used for the negative supply in the system without the user. Users can choose AC-coupled or DC-coupled output, the device has an internal DC bias, the program is very simple.
MAX9501 dual power supply with ± 5V, ± already in the system for power and do not want the user AC-coupled output. Maxim said most competitors offer only a single power amplifier, so the user must use their bulk output capacitor, so that the signal for the center, it will not only expensive, but will reduce the video quality. ± 5V supply with the MAX9501, without any capacitive coupling to the video signal for the center.
MAX9500/MAX9501 in a compact 5mm × 6mm, 16-pin QSOP and 16-pin SO package, while providing lead-free package, the device starts at $ 1.05 (1,000-up, FOB USA).