MAX4032 Maxim, MAX4032 Datasheet

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MAX4032

Manufacturer Part Number
MAX4032
Description
The MAX4032 5V, 6dB video buffer with sync-tip clamp, output sag correction, and low-power shutdown mode is available in tiny SOT23 and SC70 packages
Manufacturer
Maxim
Datasheet

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The MAX4032 5V, 6dB video buffer with sync-tip clamp,
output sag correction, and low-power shutdown mode
is available in tiny SOT23 and SC70 packages. The
sag-corrected output of the MAX4032 is designed to
drive AC-coupled, 150Ω back-terminated video loads
in portable video applications such as digital still cams,
portable DVD players, digital camcorders, PDAs, video-
enabled cell phones, portable game systems, and
notebook computers. The sag correction feature intro-
duces low-frequency compensation that reduces the
value of the normally bulky and expensive 330µF AC-
coupling capacitor to two small, less expensive 22µF
capacitors. The input clamp positions the video wave-
form at the output and allows the MAX4032 to be used
as either an AC- or DC-coupled output driver.
The MAX4032 operates from a single +5V supply and
consumes only 6.5mA of supply current. The low-power
shutdown mode reduces the supply current to 150nA,
making the MAX4032 ideal for low-voltage, battery-
powered video applications.
The MAX4032 is available in tiny 6-pin SOT23 and
SC70 packages and is specified over the extended
-40°C to +85°C temperature range.
19-3021; Rev 0; 10/03
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Output Sag Correction, and 150nA Shutdown Current
Portable Video/Game Systems/DVD Players
Digital Camcorders/Televisions/Still Cameras
PDAs
Video-Enabled Cell Phones
Notebook Computers
Portable/Flat-Panel Displays
TOP VIEW
GND
OUT
IN
________________________________________________________________ Maxim Integrated Products
1
2
3
SC70/SOT23
General Description
MAX4032
5V, 6dB Video Buffer with Sync-Tip Clamp,
Pin Configuration
6
5
4
Applications
SAG
SHDN
V
CC
o Single +5V Operation
o Input Sync-Tip Clamp
o AC- or DC-Coupled Output
o Low-Power Shutdown Mode Reduces Supply
o SAG Correction Reduces Output-Coupling
o Available in Space-Saving SOT23 and SC70
MAX4032EXT-T
MAX4032EUT-T
Current to 150nA
Capacitors from 330µF to 22µF
Packages
TOP VIEW
PART
IN
CLAMP
MAX4032
1.2kΩ
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
Ordering Information
580Ω
GND
V
CC
Block Diagram
PIN-
PACKAGE
6 SC70-6
6 SOT23-6
2.3kΩ
780Ω
Features
MARK
ABSP
TOP
ACC
OUT
SAG
SHDN
1

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MAX4032 Summary of contents

Page 1

... AC- coupling capacitor to two small, less expensive 22µF capacitors. The input clamp positions the video wave- form at the output and allows the MAX4032 to be used as either an AC- or DC-coupled output driver. The MAX4032 operates from a single +5V supply and consumes only 6 ...

Page 2

... CLP 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 ...

Page 3

Video Buffer with Sync-Tip Clamp, Output Sag Correction, and 150nA Shutdown Current AC ELECTRICAL CHARACTERISTICS (V = 5.0V, GND = 0V OUT SAG unless otherwise noted.) PARAMETER SYMBOL Small-Signal -3dB Bandwidth Large-Signal -3dB Bandwidth ...

Page 4

Video Buffer with Sync-Tip Clamp, Output Sag Correction, and 150nA Shutdown Current (V = 5.0V, GND = 0V OUT SAG unless otherwise noted.) SMALL-SIGNAL GAIN vs. FREQUENCY ...

Page 5

... IN Video Input Power-Supply Voltage. Bypass with a 0.1µ capacitor to ground as close to the pin as CC possible. Shutdown. Pull SHDN low to place the SHDN 5 MAX4032 in low-power shutdown mode. 6 SAG Sag Correction _______________________________________________________________________________________ Typical Operating Characteristics (continued) = 22µ 0.1µ 75Ω to GND SMALL-SIGNAL PULSE RESPONSE ...

Page 6

... Vertical Sync Interval (<25Hz for PAL and <30Hz for NTSC) to avoid Field Tilt. Traditionally, the break point is made <3~5Hz, and the coupling capaci- tor must be very large, typically >330µF. The MAX4032 reduces the value of this coupling capacitor, replacing it with a pair of 22µF capacitors. This is done by putting ...

Page 7

... Video Buffer with Sync-Tip Clamp, Output Sag Correction, and 150nA Shutdown Current R SOURCE 75Ω SIGNAL 75Ω Figure 2. DC-Coupling the MAX4032 R SOURCE 0.1µF 75Ω SIGNAL 75Ω Figure 3. AC-Coupling the MAX4032 _______________________________________________________________________________________ V CC MAX4032 C IN 0.1µF IN CLAMP GND V CC MAX4032 ...

Page 8

... MAX4032 to appear to oscillate. Never operate the MAX4032 in this mode. Output Coupling the MAX4032 The output of the MAX4032 can be AC- or DC-coupled to the load. In the DC-coupled mode, the MAX4032 provides accurate sync-tip clamping for single-supply operation and still can drive a 150Ω, back-terminated load ...

Page 9

... Video Buffer with Sync-Tip Clamp, Output Sag Correction, and 150nA Shutdown Current (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) _______________________________________________________________________________________ Package Information 9 ...

Page 10

... For the latest package outline information go to www.maxim-ic.com/packages.) Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. ...

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