MAX11508 Datasheet, PDF (1/12 Pages) Maxim Integrated Products – Low-Cost, 3-Channel, HD/PS/SD/BP Video Filters with Buffer

19-4346; Rev 0; 10/08
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Low-Cost, 3-Channel, HD/PS/SD/BP
Video Filters with Buffer
General Description
The MAX11508/MAX11509 integrated 3-channel video
filters for high-definition (HD), progressive-scan (PS),
standard-definition (SD), and bypass (BP) video
include an output buffer with +6dB gain and are ideal
for digital video disc (DVD) players, set-top box (STB)
receivers, high-definition television (HDTV), digital
video recorders (DVRs), and similar devices.
The MAX11508/MAX11509 video inputs feature a trans-
parent clamp compatible with AC- and DC-coupled
input signals and allow DAC outputs to be directly cou-
pled, eliminating the need for bulky coupling capaci-
tors. The filter bandwidths are selectable to HD, PS,
and SD. A BP mode is provided for 1080p and high-
bandwidth RGB signals. Selectable input bias circuitry
on 2 filter channels offers simple connection to bipolar
video signals such as C, Pb, and Pr.
The MAX11508 filters provide -3dB bandwidths of 9MHz
(SD), 16MHz (PS), 33MHz (HD), and 60MHz (BP). The
MAX11509 filters provide -3dB bandwidths of 10MHz
(SD), 17MHz (PS), 34MHz (HD), and 60MHz (BP).
Each channel includes an output buffer with +6dB gain
that provides a full 2V_P-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 back-
match resistor. The shutdown mode provided reduces
device current to 1µA (typ).
The MAX11508 offers a flat passband and the
MAX11509 features +0.8dB peaking to compensate for
DAC rolloff. The MAX11508/MAX11509 operate from a
5V power supply and operate over the upper commer-
cial (0°C to +85°C) temperature range. The parts are
offered in the 14-pin TSSOP package.
Applications
Cable and Satellite STB Receivers
HDTV
DVD Players
Personal Video Recorders
DVRs
Video-On-Demand
HD Recorders
Typical Operating Circuit appears at end of data sheet.
Features
♦ Three Selectable 6th-Order 9MHz/16MHz/33MHz
(SD/PS/HD) Filters
♦ Bypass Mode for High Bandwidth Signals
♦ Transparent Input Clamp
♦ Output Buffers Drive a Standard 150Ω Video Load
♦ ±12kV HBM ESD Protection on Outputs
♦ AC- or DC-Coupled Inputs
♦ AC- or DC-Coupled Outputs
♦ +0.8dB Peaking Passband Response (MAX11509)
in SD, PS, and HD Modes
♦ Single +5V Power Supply
♦ Lead-Free, 14-Pin TSSOP Package
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX11508UUD+
0°C to +85°C
14 TSSOP
MAX11509UUD+
0°C to +85°C
14 TSSOP
+Denotes a lead-free/RoHS-compliant package.
Pin Configuration
TOP VIEW
+
V_CC 1
FSEL0 2
Y/G_IN 3
Pb/B_IN 4
MAX11508
MAX11509
Pr/R_IN 5
BIAS 6
N.C. 7
14 N.C.
13 FSEL1
12 Y/G_OUT
11 Pb/B_OUT
10 Pr/R_OUT
9 SHDN
8 GND
TSSOP
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.