General Description
The MAX11500 integrated three-channel high-definition
(HD) video filter 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 2V
P-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 ACand 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.
Applications
High-Definition Set-Top Box Receivers
HD Television Sets
HD Recorders
DVD Players
Personal Video Recorders
Video-On-Demand
Features
♦ Three-Channel 6th-Order Filter for High-Definition
Video
♦ +6dB Output Buffers
♦ Transparent Input Clamps
♦ AC- or DC-Coupled Inputs
♦ AC- or DC-Coupled Outputs
♦ Output Buffers Drive One Standard 150Ω Video
Load
♦ 12kV HBM ESD Protection on Outputs
♦ Single +5V Power Supply
♦ Small 8-Pin SO package
MAX11500
Three-Channel, High-Definition Video Filter
________________________________________________________________
Maxim Integrated Products
1
OUT3
GNDV
CC
1
2
87OUT1
OUT2IN2
IN3
IN1
SO
+
TOP VIEW
3
4
6
5
MAX11500
IN1
OUT1
GND
V
CC
33MHz
TRANSPARENT
CLAMP
+6dB
IN2
OUT2
33MHz
TRANSPARENT
CLAMP
+6dB
IN3
OUT3
33MHz
TRANSPARENT
CLAMP
+6dB
MAX11500
Typical Operating Circuit
19-3212; Rev 0; 1/08
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.
Ordering Information
+
Denotes a lead-free package.
TEMP RANGE
MAX11500USA+ 0°C to +85°C
PACKAGE
MAX11500
Three-Channel, High-Definition Video Filter
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VCC= +5V, R
LOAD
= 150Ω to GND, CIN= 0.1µF, TA= 0°C to +85°C, unless otherwise specified. All frequency response is relative
to 100kHz.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Note 1: All devices are 100% production tested at TA= +25°C.
V
CC
to GND..............................................................-0.3V to +6V
All other pins to GND......-0.3V to the lower of (V
CC
+ 0.3V) and +6V
Continuous Power Dissipation (T
A
= +70°C)
8-Pin SO (derate 5.9mW/°C above +70°C)...............470.6mW
Maximum Current into any Pin Except V
CC
and GND......±50mA
Operating Temperature Range
MAX11500USA ...................................................0°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Junction Temperature......................................................+150°C
UNITS
-1dB Bandwidth f
1dB
TA = +25°C 23 30 MHz
-3dB Bandwidth f
3dB
33 MHz
f = 37.125MHz 6.5
f = 44.25MHz 15.5
Stopband Attenuation A
SB
f = 74.25MHz, TA = +25°C 32 48
dB
Low-Frequency Gain A
V
5.4 6.0 6.6 dB
Low-Frequency Gain
Matching
0.01 dB
Input Voltage Range V
IN
Referenced to GND if DC-coupled 1.7 V
V
OUT
= 1.4V
P-P
, f = 10MHz 0.15
V
OUT
= 1.4V
P-P
, f = 15MHz 0.2
Total Harmonic
Distortion
THD
V
OUT
= 1.4V
P-P
, f = 22MHz 0.8
%
Channel-to-Channel
Crosstalk
X
TALK
f = 1MHz -72 dB
Signal-to-Noise Ratio SNR
Peak signal (2V
P-P
) to RMS noise,
f = 100kHz to 30MHz
68 dB
Group Delay t
g
f = 100kHz 25 ns
∆t
g
f = 100kHz to 26MHz 8 ns
V
CC
4.75 5 5.25 V
Supply Current I
CC
No load 24 38 mA
SYMBOL
MAX
Group-Delay Deviation
Supply Voltage Range
A
V(MATCH
MAX11500
Three-Channel, High-Definition Video Filter
_______________________________________________________________________________________
3
MAGNITUDE RESPONSE
(PASSBAND AND STOPBAND)
MAX11500 toc01
FREQUENCY (MHz)
RESPONSE (dB)
101
-60
-40
-20
0
20
-80
0.1 100
MAGNITUDE RESPONSE
(PASSBAND)
MAX11500 toc02
FREQUENCY (MHz)
RESPONSE (dB)
101
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
4.0
0.1 100
GROUP DELAY
MAX11500 toc03
FREQUENCY (MHz)
DELAY (ns)
101
10
20
30
40
50
60
0
0.1 100
2T RESPONSE
MAX11500 toc04
40ns/div
200mV/div
200mV/div
HD MULTIBURST RESPONSE
(1MHz–10MHz)
MAX11500 toc05
4µs/div
200mV/div
200mV/div
HD MULTIBURST RESPONSE
(20MHz–30MHz)
MAX11500 toc06
4µs/div
200mV/div
200mV/div
Typical Operating Characteristics
(VCC= +5V, outputs AC-coupled with 220µF, R
LOAD
= 150Ω to GND, CIN= 0.1µF, TA= +25°C. All frequency response is relative to
100kHz.)