MAX9500 Datasheet, PDF (1/10 Pages) Maxim Integrated Products – Triple-Channel HDTV Filters

19-3779; Rev 1; 11/05
Triple-Channel HDTV Filters
General Description
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 75Ω 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/SMPTE274M filter
template achieving > 40dB attenuation at 44.25MHz.
The MAX9500/MAX9501 can also be used as an anti-
aliasing filter for HDTV component inputs.
The MAX9500/MAX9501 are available in 16-pin SO and
compact 16-pin QSOP packages, and are fully specified
over the –40°C to +85°C extended temperature range.
Applications
Cable and Satellite Set-Top Box Receivers
A/V Receivers
Home Theater Systems
HDTV Sets
DVD Players
Video Projectors
Digital Displays
Pin Configurations appear at end of data sheet.
Features
♦ 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
(150Ω/75Ω) Directly to Ground
♦ Sink and Source Output Current
♦ High Input Impedance to Interface to Low Output-
Current DAC
♦ 16-Pin SO and QSOP Packages
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
SUPPLY
VOLTAGE
(V)
MAX9500ESE+* -40°C to +85°C 16 SO
+5
MAX9500EEE+ -40°C to +85°C 16 QSOP
+5
MAX9501ESE+* -40°C to +85°C 16 SO
±5
MAX9501EEE+* -40°C to +85°C 16 QSOP
±5
+Denotes lead-free package.
*Future product—contact factory for availability.
Typical Operating Circuit
VCC
0.1µF
MPEG
DECODER
10-BIT
DAC
YIN
150Ω
MAX9500
MAX9501 _+6dB
LPF
YOUT ^75Ω
10-BIT
DAC
PbIN
150Ω
+6dB
PbOUT ^75Ω
LPF
10-BIT
DAC
+6dB
PrIN
PrOUT ^75Ω
LPF
150Ω
GND
SUBG
(MAX9500)
VEE
(MAX9501)
0.1µF
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