General Description
The MAX4090 3V/5V, 6dB video buffer with sync-tip
clamp, and low-power shutdown mode is available in
tiny SOT23, SC70, and µDFN packages. The MAX4090
is designed to drive DC-coupled, 150Ω back-terminated
video loads in portable video applications such as digi-
tal still cams, portable DVD players, digital camcorders,
PDAs, video-enabled cell phones, portable game sys-
tems, and notebook computers. The input clamp posi-
tions the video waveform at the output and allows the
MAX4090 to be used as a DC-coupled output driver.
The MAX4090 operates from a single 2.7V to 5.5V sup-
ply and consumes only 6.5mA of supply current. The
low-power shutdown mode reduces the supply current
to 150nA, making the MAX4090 ideal for low-voltage,
battery-powered video applications.
The MAX4090 is available in tiny 6-pin SOT23, SC70,
and µDFN packages and is specified over the extend-
ed (-40°C to +85°C) and automotive (-40°C to +125°C)
temperature ranges.
Applications
Portable Video/Game Systems/DVD Players
Digital Camcorders/Televisions/Still Cameras
PDAs
Video-Enabled Cell Phones
Notebook Computers
Portable/Flat-Panel Displays
Features
Single-Supply Operation from 2.7V to 5.5V
Input Sync-Tip Clamp
DC-Coupled Output
Low-Power Shutdown Mode Reduces Supply
Current to 150nA
Available in Space-Saving SOT23, SC70, and
µDFN Packages
MAX4090
3V/5V, 6dB Video Buffer with Sync-Tip Clamp
and 150nA Shutdown Current
________________________________________________________________ Maxim Integrated Products 1
PART TEMP RANGE
PIN-
PACKAGE
TOP
MARK
MAX4090EXT-T -40°C to +85°C 6 SC70 ABM
MAX4090EUT-T -40°C to +85°C 6 SOT23 ABOX
MAX4090EUT/V+T -40°C to +85°C 6 SOT23 ABOX
MAX4090ELT-T -40°C to +85°C 6 µDFN AAI
MAX4090AAXT-T -40°C to +125°C 6 SC70 ACW
MAX4090AAUT-T -40°C to +125°C 6 SOT23 ABWQ
MAX4090AALT-T -40°C to +125°C 6 µDFN AAN
Ordering Information
GND
V
CC
IN
16FB
5 SHDN
OUT
MAX4090
SC70/SOT23
2
34
123
654
FB OUTSHDN
V
CC
INGND
MAX4090
μDFN
TOP VIEW
Pin Configurations
19-2813; Rev 4; 11/09
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.
MAX4090
CLAMP
1.2kΩ
2.3kΩ
580Ω
780Ω
IN
OUT
FB
SHDN
GND
V
CC
Block Diagram
/V denotes an automotive qualified part.
MAX4090
3V/5V, 6dB Video Buffer with Sync-Tip Clamp
and 150nA Shutdown Current
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(V
CC
= 3.0V, V
GND
= 0V, C
IN
= 0.1µF from IN to GND, R
L
= infinity to GND, FB shorted to OUT, V
SHDN
= 3.0V, T
A
= -40°C to +85°C
(MAX4090E), T
A
= -40°C to +125°C (MAX4090A). Typical values are at T
A
= +25°C, unless otherwise noted.) (Note 2)
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: V
CLP
is the input clamp voltage as defined in the DC Electrical Characteristics table.
V
CC
to GND............................................................. -0.3V to +6V
OUT, FB, SHDN to GND............................ -0.3V to (V
CC
+ 0.3V)
IN to GND (Note 1) ................................... V
CLP
to (V
CC
+ 0.3V)
IN Short-Circuit Duration from -0.3V to V
CLP
........................1min
Output Short-Circuit Duration to V
CC
or GND .......... Continuous
Continuous Power Dissipation (T
A
= +70°C)
6-Pin SOT23 (derate 8.7mW/°C above +70°C) ...........695mW
6-Pin SC70 (derate 3.1mW/°C above +70°C) .............245mW
6-Pin µDFN (derate 3.6mW/°C above +70°C) ..............290mW
Operating Temperature Range
MAX4090E .......................................................-40°C to +85°C
MAX4090A.....................................................-40°C to +125°C
Junction Temperature .....................................................+150°C
Storage Temperature Range ............................-65°C to +150°C
Lead Temperature (soldering, 10s) ................................+300°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage Range V
CC
Guaranteed by PSRR 2.7 5.5 V
V
CC
= 3V 6.5 10
Quiescent Supply Current I
CC
V
IN
= V
CLP
V
CC
= 5V 6.5 10
mA
Shutdown Supply Current I
SHDN
V
SHDN
= 0V 0.15 1 µA
Input Clamp Voltage V
CLP
Input referred 0.27 0.38 0.47 V
Input Voltage Range V
IN
Inferred from voltage gain (Note 3) V
CLP
1.45 V
Input Bias Current I
BIAS
V
IN
= 1.45V 22.5 35 µA
Input Resistance V
CLP
+ 0.5V < V
IN
< V
CLP
+ 1V 3 MΩ
Voltage Gain A
V
R
L
= 150Ω, 0.5V < V
IN
< 1.45V (Note 4) 1.9 2 2.1 V/V
Power-Supply Rejection Ratio PSRR 2.7V < V
CC
< 5.5V 60 80 dB
V
CC
= 3V 2.55 2.7
Output-Voltage High Swing V
OH
R
L
= 150Ω to GND
V
CC
= 5V 4.3 4.6
V
Output-Voltage Low Swing V
OL
R
L
= 150Ω to GND V
CLP
0.47 V
Sourcing, R
L
= 20Ω to GND 45 85
Output Current I
OUT
Sinking, R
L
= 20Ω to V
CC
40 85
mA
Output Short-Circuit Current I
SC
OUT shorted to V
CC
or GND 110 mA
SHDN Logic-Low Threshold V
IL
V
CC
x 0.3 V
SHDN Logic-High Threshold V
IH
V
CC
x 0.7 V
SHDN Input Current I
IH
0.003 1 µA
At DC 4
Shutdown Output Impedance
R
OUT
(
Disabled
)
V
SHDN
= 0V
At 3.58MHz or
4.43MHz
2
kΩ
MAX4090
3V/5V, 6dB Video Buffer with Sync-Tip Clamp
and 150nA Shutdown Current
_______________________________________________________________________________________ 3
Note 2: All devices are 100% production tested at T
A
= +25°C. Specifications over temperature limits are guaranteed by design.
Note 3: Voltage gain (A
V
) is referenced to the clamp voltage, i.e., an input voltage of V
IN
= V
CLP
+ VI would produce an output volt-
age of V
OUT
= V
CLP
+ A
V
x VI.
Note 4: Droop is guaranteed by the Input Bias Current specification.
AC ELECTRICAL CHARACTERISTICS
(V
CC
= 3.0V, V
GND
= 0V, FB shorted to OUT, C
IN
= 0.1µF, R
IN
= 75Ω to GND, R
L
= 150Ω to GND, V
SHDN
= V
CC
, T
A
= +25°C, unless
otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Small-Signal -3dB Bandwidth BW
SS
V
OUT
= 100mV
P-P
55 MHz
Large-Signal -3dB Bandwidth BW
LS
V
OUT
= 2V
P-P
45 MHz
Small-Signal 0.1dB Gain Flatness BW
0.1dBSS
V
OUT
= 100mV
P-P
25 MHz
Large-Signal 0.1dB Gain Flatness BW
0.1dBLS
V
OUT
= 2V
P-P
17 MHz
Slew Rate SR V
OUT
= 2V step 275 V/µs
Settling Time to 0.1% t
S
V
OUT
= 2V step 25 ns
Power-Supply Rejection Ratio PSRR f = 100kHz 50 dB
Output Impedance Z
OUT
f = 5MHz 2.5 Ω
V
CC
= 3V 1
Differential Gain DG NTSC
V
CC
= 5V 0.5
%
V
CC
= 3V 0.8
Differential Phase DP NTSC
V
CC
= 5V 0.5
Degrees
Group Delay D/dT f = 3.58MHz or 4.43MHz 20 ns
Peak Signal to RMS Noise SNR V
IN
= 1V
P-P
, 10MHz BW 65 dB
Droop C
IN
= 0.1µF (Note 4) 2 3 %
SHDN Enable Time t
ON
V
IN
= V
CLP
+ 1V, V
SHDN
= 3V, V
OUT
settled to within 1% of the final voltage
250 ns
SHDN Disable Time t
OFF
V
IN
= V
CLP
+ 1V, V
SHDN
= 0V, V
OUT
settled to below 1% of the output voltage
50 ns

MAX4090AAXT+T

Mfr. #:
Manufacturer:
Maxim Integrated
Description:
Video Amplifiers 3V/5V 6dB Video Buff w/Sync-Tip Clamp
Lifecycle:
New from this manufacturer.
Delivery:
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