The MAX9500/MAX9501 are fully integrated solutions
for filtering and buffering HDTV signals. The MAX9500
operates from a single +5V supply, while the MAX9501
operates from dual ±5V supplies. The MAX9500/MAX9501 triple-channel video reconstruction filters are
both gain and delay matched and are ideal for use in
set-top boxes, DVD players, and other equipment that
generate analog HDTV outputs.
The MAX9500/MAX9501 interface between the current-output,
digital-to-analog converters (DAC) of an
Advanced Television Standard Committee (ATSC),
Motion Picture Experts Group (MPEG) decoder and the
external connections of a television, set-top box, or
DVD player.
The MAX9500/MAX9501 feature a DC-coupled input with
very low input capacitance and high resistance. The
highly selective lowpass filters remove spectral replicas
at the output of the DAC. The output amplifier has +6dB
of gain to drive 75 back-terminated loads to unity gain. The DC-coupled input eliminates problems such as sync
crush, droop, and field tilt. The output load can be DC- or
AC-coupled, depending on the application.
All three channels in the MAX9500/MAX9501 have the
same frequency response with matched group delay
and gain. The MAX9500/MAX9501 filter response meets
the requirements of the EIA-770.3/SMPTE 274M filter
template achieving > 40dB attenuation at 44.25MHz.
The MAX9500/MAX9501 can also be used as an antialiasing
filter for HDTV component inputs.
The MAX9500/MAX9501 are available in compact 16-pin
QSOP packages and are fully specified over the -40°C to
+85°C extended temperature range.
Key Features
Applications/Uses
30MHz Bandwidth at ±1.5dB
Extremely Sharp Rolloff, Lowpass Filters -50dB at 44.25MHz
DC-Coupled Inputs; AC- or DC-Coupled Outputs
±5V Dual Supply (MAX9501)
5V Single Supply (MAX9500)
Matched Group Delay and Gain
Drive Single/Double Back-Terminated Loads (150/75) Directly to Ground
Sink and Source Output Current
High Input Impedance to Interface to Low Output-Current DAC
Notes: **This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
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back-terminated loads to unity gain. The DC-coupled input eliminates problems such as sync
crush, droop, and field tilt. The output load can be DC- or
AC-coupled, depending on the application.
