MAXIM MAX4090 Technical data

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 digi­tal still cams, portable DVD players, digital camcorders,
PDAs, video-enabled cell phones, portable game sys­tems, and notebook computers. The input clamp posi­tions 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 sup­ply 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 extend­ed (-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

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.

PART TEMP RANGE

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

PIN­PACKAGE

TOP

MARK

MAX4090

3V/5V, 6dB Video Buffer with Sync-Tip Clamp
and 150nA Shutdown Current

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

DC ELECTRICAL CHARACTERISTICS

(VCC= 3.0V, V

GND

= 0V, C

IN

= 0.1µF from IN to GND, RL= infinity to GND, FB shorted to OUT, V

SHDN

= 3.0V, TA= -40°C to +85°C

(MAX4090E), T

A

= -40°C to +125°C (MAX4090A). Typical values are at TA= +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 (VCC+ 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

Quiescent Supply Current I

Shutdown Supply Current I

Input Clamp Voltage V

Input Voltage Range V

Input Bias Current I

Input Resistance V

Voltage Gain A

Power-Supply Rejection Ratio PSRR 2.7V < VCC < 5.5V 60 80 dB

Output-Voltage High Swing V

Output-Voltage Low Swing V

Output Current I

Output Short-Circuit Current I

SHDN Logic-Low Threshold V
SHDN Logic-High Threshold V
SHDN Input Current I

Shutdown Output Impedance

CC

CC

SHDN

CLP

BIAS

OH

OL

OUT

SC

IH

R

OUT

Disabled

Guaranteed by PSRR 2.7 5.5 V

VIN = V

CLP

V

= 0V 0.15 1 µA

SHDN

Input referred 0.27 0.38 0.47 V

Inferred from voltage gain (Note 3) V

IN

VIN = 1.45V 22.5 35 µA

+ 0.5V < VIN < V

CLP

RL = 150Ω, 0.5V < VIN < 1.45V (Note 4) 1.9 2 2.1 V/V

V

RL = 150Ω to GND

RL = 150Ω to GND V

Sourcing, RL = 20Ω to GND 45 85

Sinking, RL = 20Ω to V

OUT shorted to VCC or GND 110 mA

IL

IH

V

= 0V

SHDN

VCC = 3V 6.5 10

VCC = 5V 6.5 10

CLP

+ 1V 3 MΩ

CLP

1.45 V

VCC = 3V 2.55 2.7

V

= 5V 4.3 4.6

CC

0.47 V

CC

CLP

40 85

VCC x 0.3 V

VCC x 0.7 V

0.003 1 µA

At DC 4

At 3.58MHz or

4.43MHz

2

mA

V

mA

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 TA= +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 VIN= V

CLP

+ VI would produce an output volt-

age of V

OUT

= V

CLP

+ AVx VI.

Note 4: Droop is guaranteed by the Input Bias Current specification.

AC ELECTRICAL CHARACTERISTICS

(VCC= 3.0V, V

GND

= 0V, FB shorted to OUT, CIN= 0.1µF, RIN= 75Ω to GND, RL= 150Ω to GND, V

SHDN

= VCC, TA= +25°C, unless

otherwise noted.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Small-Signal -3dB Bandwidth BW

Large-Signal -3dB Bandwidth BW

Small-Signal 0.1dB Gain Flatness BW

Large-Signal 0.1dB Gain Flatness BW

Slew Rate SR V

Settling Time to 0.1% t

Power-Supply Rejection Ratio PSRR f = 100kHz 50 dB

Output Impedance Z

Differential Gain DG NTSC

Differential Phase DP NTSC

Group Delay D/dT f = 3.58MHz or 4.43MHz 20 ns

Peak Signal to RMS Noise SNR VIN = 1V

Droop CIN = 0.1µF (Note 4) 2 3 %

SHDN Enable Time t

SHDN Disable Time t

V

SS

LS

0.1dBSSVOUT

0.1dBLSVOUT

S

OUT

ON

OFF

= 100mV

OUT

V

= 2V

OUT

= 100mV

= 2V

= 2V step 275 V/µs

OUT

V

= 2V step 25 ns

OUT

f = 5MHz 2.5 Ω

VIN = V
settled to within 1% of the final voltage

VIN = V
settled to below 1% of the output voltage

P-P

P-P

P-P

P-P

VCC = 3V 1

= 5V 0.5

V

CC

VCC = 3V 0.8

= 5V 0.5

V

CC

, 10MHz BW 65 dB

P-P

CLP

CLP

+ 1V, V

+ 1V, V

SHDN

SHDN

= 3V, V

= 0V, V

OUT

OUT

55 MHz

45 MHz

25 MHz

17 MHz

250 ns

50 ns

Degrees

%

MAX4090

3V/5V, 6dB Video Buffer with Sync-Tip Clamp
and 150nA Shutdown Current

4 _______________________________________________________________________________________

Typical Operating Characteristics

(VCC= 3.0V, GND = 0V, FB shorted to OUT, CIN= 0.1µF, RIN= 75Ω to GND, RL= 150Ω to GND, SHDN = VCC, TA= +25°C, unless
otherwise noted.)

SMALL-SIGNAL GAIN

vs. FREQUENCY

MAX4090 toc01

FREQUENCY (Hz)

GAIN (dB)

10M1M

-5

-4

-3

-2

-1

0

1

2

3

-6
100k 100M

AV = 2
V

CC

= 3V

V

OUT

= 100mV

P-P

SMALL-SIGNAL GAIN FLATNESS

vs. FREQUENCY

MAX4090 toc02

FREQUENCY (Hz)

GAIN (dB)

10M1M

-0.5

-0.4

-0.3

-0.2

-0.1

0

0.1

0.2

0.3

-0.6
100k 100M

AV = 2
V

CC

= 3V

V

OUT

= 100mV

P-P

SMALL-SIGNAL GAIN

vs. FREQUENCY

MAX4090 toc03

FREQUENCY (Hz)

GAIN (dB)

10M1M

-5

-4

-3

-2

-1

0

1

2

3

-6
100k 100M

AV = 2
V

CC

= 5V

V

OUT

= 100mV

P-P

SMALL-SIGNAL GAIN FLATNESS

vs. FREQUENCY

MAX4090 toc04

FREQUENCY (Hz)

GAIN (dB)

10M1M

-0.5

-0.4

-0.3

-0.2

-0.1

0

0.1

0.2

0.3

-0.6
100k 100M

AV = 2
V

CC

= 5V

V

OUT

= 100mV

P-P

LARGE-SIGNAL GAIN

vs. FREQUENCY

MAX4090 toc05

FREQUENCY (Hz)

GAIN (dB)

10M1M

-5

-4

-3

-2

-1

0

1

2

3

-6
100k 100M

AV = 2
V

CC

= 3V

V

OUT

= 2V

P-P

LARGE-SIGNAL GAIN FLATNESS

vs. FREQUENCY

MAX4090 toc06

FREQUENCY (Hz)

GAIN (dB)

10M1M

-0.5

-0.4

-0.3

-0.2

-0.1

0

0.1

0.2

0.3

-0.6
100k 100M

AV = 2
V

CC

= 3V

V

OUT

= 2V

P-P

LARGE-SIGNAL GAIN

vs. FREQUENCY

MAX4090 toc07

FREQUENCY (Hz)

GAIN (dB)

10M1M

-5

-4

-3

-2

-1

0

1

2

3

-6
100k 100M

AV = 2
V

CC

= 5V

V

OUT

= 2V

P-P

LARGE-SIGNAL GAIN FLATNESS

vs. FREQUENCY

MAX4090 toc08

FREQUENCY (Hz)

GAIN (dB)

10M1M

-0.5

-0.4

-0.3

-0.2

-0.1

0

0.1

0.2

0.3

-0.6
100k 100M

AV = 2
V

CC

= 5V

V

OUT

= 2V

P-P

POWER-SUPPLY REJECTION RATIO

vs. FREQUENCY

MAX4090 toc09

FREQUENCY (Hz)

PSRR (dB)

10M1M100k

-70

-60

-50

-40

-30

-20

-10

0

-80
10k 100M

VCC = 3V

MAX4090

3V/5V, 6dB Video Buffer with Sync-Tip Clamp

and 150nA Shutdown Current

_______________________________________________________________________________________ 5

Typical Operating Characteristics (continued)

(VCC= 3.0V, GND = 0V, FB shorted to OUT, CIN= 0.1µF, RIN= 75Ω to GND, RL= 150Ω to GND, SHDN = VCC, TA= +25°C, unless
otherwise noted.)

POWER-SUPPLY REJECTION RATIO

vs. FREQUENCY

0

VCC = 5V

-10

-20

-30

-40

PSRR (dB)

-50

-60

-70

-80
10k 100M

FREQUENCY (Hz)

10M1M100k

VOLTAGE GAIN

vs. TEMPERATURE

2.10

2.05

2.00

GAIN (V/V)

1.95

1.90

-40 140
TEMPERATURE (°C)

6.8

6.7

MAX4090 toc10

6.6

6.5

6.4

SUPPLY CURRENT (mA)

6.3

6.2

6.1

120100806040200-20

QUIESCENT SUPPLY CURRENT

vs. TEMPERATURE

VCC = 5V

VCC = 3V

60

20

-20

-40 140

0

TEMPERATURE (°C)

MAX4090 toc13

120

1008040

3.0

VCC = 3V

2.9

2.8

2.7

2.6

2.5

2.4

2.3

OUTPUT-VOLTAGE HIGH (V)

2.2

2.1

2.0

-40 140

0.60

0.55

MAX4090 toc11

0.50

0.45

(V)

0.40

CLAMP

V

0.35

0.30

0.25

0.20

-40 140

OUTPUT-VOLTAGE HIGH SWING

vs. TEMPERATURE

TEMPERATURE (°C)

CLAMP VOLTAGE

vs. TEMPERATURE

120100-20 0 20 6040 80

TEMPERATURE (°C)

MAX4090 toc14

12010060 800 20 40-20

MAX4090 toc12

OUTPUT-VOLTAGE HIGH SWING

5.0

vs. TEMPERATURE

VCC = 5V

4.9

4.8

4.7

4.6

4.5

4.4

4.3

OUTPUT-VOLTAGE HIGH (V)

4.2

4.1

4.0

-40 140
TEMPERATURE (°C)

MAX4090 toc15

500mV/div

12010060 800 20 40-20

LARGE-SIGNAL PULSE RESPONSE

V

IN

V

OUT

1V/div

MAX4090 toc16

10ns/div

MAX4090

3V/5V, 6dB Video Buffer with Sync-Tip Clamp
and 150nA Shutdown Current

6 _______________________________________________________________________________________

Typical Operating Characteristics (continued)

(VCC= 3.0V, GND = 0V, FB shorted to OUT, CIN= 0.1µF, RIN= 75Ω to GND, RL= 150Ω to GND, SHDN = VCC, TA= +25°C, unless
otherwise noted.)

DIFFERENTIAL GAIN AND PHASE

-1.0

-2.0

0

1.0

2.0

DIFFERENTIAL

PHASE (°)

DIFFERENTIAL

GAIN (%)

MAX4090 toc18

0123456

0123456

-0.5

-1.0

0

0.5

1.0

Pin Description

Typical Application Circuit

V

25mV/div

V

OUT

50mV/div

IN

PIN

SOT23/

SC70

µDFN

1 4 OUT Video Output

2 2 GND Ground

3 3 IN Video Input

41V

55SHDN

6 6 FB Feedback. Connect to OUT.

SMALL-SIGNAL PULSE RESPONSE

10ns/div

MAX4090 toc17

NAME FUNCTION

Power-Supply Voltage. Bypass
with a 0.1µF capacitor to

CC

ground as close to pin as
possible.

Shutdown. Pull SHDN low to
place the MAX4090 in low­power shutdown mode.

V

CC

MAX4090

IN

R

IN

CLAMP

GND

OUT

FB

SHDN

R

L