MAXIM MAX4027 Technical data

General Description

The MAX4027 is a triple, wideband, 2-channel, nonin­verting gain-of-two video amplifier with input multiplex­ing, capable of driving up to two back-terminated video
loads. The MAX4027 features current-mode feedback
amplifiers configured for a gain of two (+6dB) with a

-3dB large-signal bandwidth of 200MHz. The device
has low (0.012%/0.014°) differential gain and phase
errors, and operates from ±5V supplies.

The MAX4027 is ideal for use in broadcast and graph­ics video systems because of the low 2pF input capaci­tance, channel-to-channel switching time of only 15ns,
and wide 62MHz, large-signal 0.1dB bandwidth. High­impedance output disabling allows the MAX4027 to be
incorporated into large switching arrays with minimal
interaction with the source. Specified over the -40°C to
+85°C extended temperature range, the MAX4027 is
available in 14-pin SO and TSSOP packages.

Applications

Video Source Selection (Multiplexing)

Picture in Picture (PIP) Insertion

Crosspoint Expansion

Coaxial Cable Drivers

Supports VGA to UXGA (1600 x 1200) Resolution

Enterprise Class (Blade) Servers

Keyboard-Video-Mouse (KVM)

Features

♦ Excellent Video Specifications:

75MHz Small-Signal 0.1dB Gain Flatness
62MHz Large-Signal 0.1dB Gain Flatness

0.012%/0.014° Differential Gain/Phase Error

♦ VGA to UXGA Resolution

♦ High Speed:

200MHz 2V

P-P

-3dB Bandwidth
1100V/µs Slew Rate
15ns Settling Time to 0.1%

♦ Internal Gain of 2V/V Compensates for Output

Back Termination

♦ Fast Switching:

15ns Channel-Switching Time
260mV

P-P

Switching Transient

♦ Drives Two Back-Terminated Video Loads

♦ High-Impedance Output Disable

MAX4027

225MHz, Triple, 2-Channel Video

Multiplexer-Amplifier

________________________________________________________________ Maxim Integrated Products 1

Pin Configuration

Ordering Information

VIDEO

SOURCE

1

R

IN1A
IN2A
IN3A

IN1B
IN2B
IN3B

G
B

R
G
B

TRIPLE

2:1

MUX

A/B EN

OUT1

OUT2

OUT3

R

G

B

VIDEO

SOURCE

2

MAX4027

x 2

x 2

x 2

14

13

12

11

10

9

8

1

2

3

4

5

6

7

A/B

OUT1

V

CC

OUT2GND

IN3A

IN2A

IN1A

TOP VIEW

MAX4027

V

EE

OUT3

ENIN3B

IN2B

IN1B

SO/TSSOP

Typical Operating Circuit

19-2987; Rev 0; 9/03

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.

PART TEMP RANGE PIN-PACKAGE

MAX4027ESD -40°C to +85°C 14 SO

MAX4027EUD -40°C to +85°C 14 TSSOP

MAX4027

225MHz, Triple, 2-Channel Video
Multiplexer-Amplifier

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

DC ELECTRICAL CHARACTERISTICS

(VCC= 5V, VEE= -5V, V

IN_ _

= 0V, RL= 150Ω to GND, TA= -40°C to +85°C. Typical values are at TA= +25°C.) (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: Continuous power-dissipation rating must also be observed.

Positive Supply Voltage (V

CC

to GND) ..................................+6V

Negative Supply Voltage (V

EE

to GND) ..................................-6V

Amplifier Input Voltage (IN_ _) .........(V

EE

- 0.3V) to (VCC+ 0.3V)

Digital Input Voltage (EN, A/B)...................-0.3V to (V

CC

+ 0.3V)

Output Short Circuit to GND (Note 1).........................Continuous

Output Short Circuit to V

CC

or VEE...........................................5s

Continuous Power Dissipation (T

A

= +70°C)

14-Pin TSSOP (derate 9.1mW/°C above +70°C) .........727mW

14-Pin SO (derate 8.3mW/°C above +70°C)................667mW

Operating Temperature Range ...........................-40°C to +85°C

Storage Temperature Range .............................-65°C to +150°C

Junction Temperature .....................................................+150°C

Lead Temperature (soldering, 10s) .................................+300°C

)

Operating Supply Voltage Range

Positive Supply Current I

Negative Supply Current I

Input Voltage Range V

Input Offset Voltage V

Input Offset-Voltage Matching ∆V

Voltage Gain A

Input Offset-Voltage Temperature
Coefficient

Input Bias Current I

Input Resistance R

DC Output Resistance R

Disabled Output Resistance R

DC Power-Supply Rejection Ratio PSRR VCC = +4.5V to +5.5V, VEE = -4.5V to -5.5V 60 86 dB

Output Voltage Swing V

Output Short-Circuit Current I

LOGIC CHARACTERISTICS (EN, A/B)

Logic-Low Threshold V

Logic-High Threshold V

Logic-Low Input Current I

Logic-High Input Current I

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

V

CC

V

CC

IN_ _

TCV

OUT

OUT(d

OUT_

Inferred from the PSRR test

EE

EN = GND 31 39
EN = 5V 17 24
EN = GND 28 36

EE

EN = 5V 15 21

Inferred from voltage gain ±1.25 ±1.75 V

TA = +25°C±1±6

OS

TA = -40°C to +85°C ±11

Channel to channel ±1 ±12 mV

OS

V

V

OS

B

IN

SC

IL

IH

IL

IH

= ±2.5V 1.9 2.0 2.1 V/V

OUT_

TA = +25°C ±2 ±10

TA = -40°C to +85°C ±18

V

= -1.25V to

IN_ _

+1.25V

EN = 5V, V

VIL = 0V -4 -20 µA

VIH = +5.5V, VCC = +5.5V 350 600 µA

OUT_

+4.5 +5.0 +5.5

-4.5 -5.0 -5.5

1 µV/°C

Channel on 100 400 kΩ
Channel off 1 20 MΩ

10 mΩ

= -2.5V to +2.5V (Note 3) 1.6 kΩ

±2.5 ±3.5 V

±143 mA

0.8 V

2.0 V

V

mA

mA

mV

µA

MAX4027

225MHz, Triple, 2-Channel Video

Multiplexer-Amplifier

_______________________________________________________________________________________ 3

AC ELECTRICAL CHARACTERISTICS

(VCC= 5V, VEE= -5V, V

IN_ _

= 0V, RIN= 75Ω to GND, RL= 150Ω to GND, TA= +25°C, unless otherwise noted.)

Note 2: Limits are 100% production tested at T

A

= +25°C. Limits over the operating temperature range are guaranteed by design.

Note 3: Disabled output resistance includes the internal feedback network.
Note 4: Input test signal is NTSC composite with 5-step staircase, of 40 IRE per step, modulated with 3.58MHz color subcarrier.
Note 5: See the Timing Diagram (Figure 2).
Note 6: Channel-switching time specified for switching between input channels; does not include signal rise/fall times for switching

between channels with different input voltages.

Note 7: Output enable/disable delay times do not include amplifier output slewing times.
Note 8: Switching transient measured while switching between two grounded channels.

)

)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

AMPLIFIER CHARACTERISTICS

Small-Signal -3dB Bandwidth BW

Small-Signal Bandwidth for
±0.1dB Gain Flatness

Large-Signal -3dB Bandwidth BW

Large-Signal Bandwidth for
±0.1dB Gain Flatness

Slew Rate SR V

Settling Time to 0.1% t

Differential Gain Error DG 5-step modulated staircase (Note 4) 0.012 %

Differential Phase Error DP 5-step modulated staircase (Note 4) 0.014 degrees

Delay Between Channels t

Channel-to-Channel Crosstalk X
A/B Crosstalk V

Output Impedance Z

Total Harmonic Distortion THD V

Off-Isolation A

Output Capacitance C

Input Capacitance C

Input-Voltage Noise Density e

Input-Current Noise Density i

SWITCHING CHARACTERISTICS

Channel-Switching Time t

Enable Delay Time t

Disable Delay Time t

Switching Transient V

SSVIN_ _

BW

LS(0.1

LSVIN_ _

BW

LS(0.1

S

D

TALKVIN_ _

OUT

ISO

OUT

IN

n

n

SW

PDE

PDD

TRAN

= 20mV

P-P

V

= 20mV

IN_ _

V

IN_ _

IN_ _

V

IN_ _

V

IN_ _

IN_ _

P-P

= 1V

P-P

= 1V

P-P

= 1V

P-P

= 1V

P-P

= 1V

, tR = 100ps 0.1 ns

P-P

= ±1V

= ±1V

, f = 10MHz -61 dB

P-P

, f = 10MHz -80 dB

P-P

f = 10MHz 1 Ω

= 2V

OUT_

V

OUT_

, f = 10MHz 64 dBc

P-P

= 2V

, f = 10MHz, RS = 75Ω -83 dB

P-P

Channel on or off 3 pF

Channel on or off 2 pF
f = 100kHz 6.5 nV/√Hz
f = 100kHz 6.5 pA/√Hz

(Notes 5, 6) 15 ns

(Notes 5, 7) 20 ns

(Notes 5, 7) 25 ns

(Note 8) 260 mV

225 MHz

75 MHz

200 MHz

62 MHz

1100 V/µs

15 ns

P-P

MAX4027

225MHz, Triple, 2-Channel Video
Multiplexer-Amplifier

4 _______________________________________________________________________________________

Typical Operating Characteristics

(VCC= +5V, VEE= -5V, RL= 150Ω to GND, TA= +25°C, unless otherwise noted.)

SMALL-SIGNAL FREQUENCY RESPONSE

MAX4027 toc01

FREQUENCY (Hz)

GAIN (dB)

100M10M

-6

-5

-4

-3

-2

-1

0

1

2

3

-7
1M 1G

V

IN_ _

= 20mV

P-P

AV = +2V/V

SMALL-SIGNAL GAIN FLATNESS

vs. FREQUENCY

MAX4027 toc02

FREQUENCY (Hz)

GAIN (dB)

100M10M

-0.6

-0.5

-0.4

-0.3

-0.2

-0.1

0

0.1

0.2

0.3

-0.7
1M 1G

V

IN_ _

= 20mV

P-P

AV = +2V/V

LARGE-SIGNAL FREQUENCY RESPONSE

MAX4027 toc03

FREQUENCY (Hz)

GAIN (dB)

100M10M

-6

-5

-4

-3

-2

-1

0

1

2

3

-7
1M 1G

AV = +2V/V

V

OUT_

= 4V

P-P

V

OUT_

= 2V

P-P

LARGE-SIGNAL GAIN FLATNESS

vs. FREQUENCY

MAX4027 toc04

FREQUENCY (Hz)

GAIN (dB)

100M10M

-0.6

-0.5

-0.4

-0.3

-0.2

-0.1

0

0.1

0.2

0.3

-0.7
1M 1G

AV = +2V/V

V

OUT_

= 4V

P-P

V

OUT_

= 2V

P-P

CHANNEL-TO-CHANNEL GAIN MATCHING

vs. FREQUENCY

MAX4027 toc05

FREQUENCY (Hz)

CHANNEL-TO-CHANNEL GAIN MATCHING (dB)

10M

-0.4

-0.3

-0.2

-0.1

0

0.1

0.2

0.3

0.4

0.5

-0.5
1M 100M

V

OUT_

= 2V

P-P

DIFFERENTIAL GAIN AND PHASE

MAX4027 toc06

DIFFERENTIAL PHASE (DEG)

5th3rd

-0.010

0

0.010

0.020

-0.020

-0.010

0

0.010

0.020

-0.020

1st 2nd 4th 6th

5th3rd1st 2nd 4th 6th

DIFFERENTIAL GAIN (%)

POWER-SUPPLY REJECTION RATIO

vs. FREQUENCY

MAX4027 toc07

FREQUENCY (Hz)

PSRR (dB)

10M1M

-60

-55

-50

-45

-40

-35

-30

-25

-20

-65
100k 100M

PSRR-

PSRR+

OFF-ISOLATION vs. FREQUENCY

MAX4027 toc08

FREQUENCY (Hz)

OFF-ISOLATION (dB)

100M10M

-100

-80

-60

-40

-20

0

-120
1M 1G

CHANNEL-TO-CHANNEL CROSSTALK

vs. FREQUENCY

MAX4027 toc09

FREQUENCY (Hz)

CROSSTALK (dB)

100M10M1M

-70

-60

-50

-40

-30

-20

-10

0

-80
100k 1G