Rainbow Electronics MAX4886 User Manual

General Description

The MAX4886 high-speed analog switch is ideal for
HDMI/DVI switching applications, permitting 2:1 or 1:2
switching. The MAX4886 contains four differential pairs
of 1:2 or 2:1 switches for RGB and clocking signals.
The MAX4886 connects either one monitor to one of
two digital video signals, or one HDMI/DVI source to
one of two loads (sink).

The MAX4886 set of differential switches is based on
an nFET architecture with internal charge pump for gate
overdrive. This advanced architecture results in an
extremely low capacitance and on-resistance needed
for the excellent return loss requirements for digital
switching. An efficient internal charge-pump design
offers very low quiescent current for power-sensitive
notebook designs.

The MAX4886 features 8Ω (typ) on-resistance and 2.5pF
on-capacitance switches for routing RGB and CLK video
signals. The MAX4886 is a high-frequency companion
device to the MAX4929. These two devices combined
perform the full 2:1 HDMI/DVI switching function.

The MAX4886 is available in a space-saving, 42-pin,

3.5mm x 9.0mm TQFN package and operates over the
extended -40°C to +85°C temperature range.

Applications

HDTV Monitors/Receivers

Video Projectors

Notebook Computers

Digital HDTV Switch Boxes/Tuners

Multimedia Audio/Video Switchers

Servers/Routers with DVI Interfaces

Digital Video Recorders

LVDS Switching

1000 Base-BX, Switching

Features

♦ Single +3.0V to +3.6V Power Supply

♦ Low On-Resistance (R

ON

): 8Ω (typ)

♦ Low On-Capacitance (C

ON

): 2.5pF (typ)

♦ Low Skew: 20ps (typ)

♦ 700µA Low Supply Current

♦ 2.6GHz (typ) Ultra-High Bandwidth

♦ 0.6dB (typ) Ultra-Low Insertion Loss

♦ High-Frequency Companion Device to MAX4929

♦ Use MAX4886 and MAX4929 to Form a Complete

HDMI/DVI 2:1 Switch

♦ 42-Pin, 3.5mm x 9.0mm, Space-Saving TQFN

MAX4886

Quad, High-Speed HDMI/DVI 2:1 Digital Video

Switch

________________________________________________________________ Maxim Integrated Products 1

19-0807; Rev 0; 4/07

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.

Ordering Information

PART TEMP RANGE

PIN­PACKAGE

PKG

CODE

MAX4886ETO+ -40°C to +85°C 42 TQFN-EP* T42359OM-1

+Denotes a lead-free package.

*EP = Exposed paddle.

Pin Configuration appears at end of data sheet.

EYE DIAGRAM

(V

DD

= 3.3V, f = 2.6GHz

600mV

P-P

PRBS SIGNAL+)

* PRBS = PSUEDORANDOM BIT SEQUENCE
UI = 606ps

Eye Diagram

MAX4886

Quad, High-Speed HDMI/DVI 2:1 Digital Video
Switch

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

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.

(All voltages referenced to GND.)
V

DD

...........................................................................-0.3V to +4V

SEL (Note 1) ...............................................-0.3V to (V

DD

+ 0.3V)

COM_, NC_, NO_ .......................................-0.3V to (V

DD

+ 0.3V)

Continuous Current Through Any Switch .......................±120mA

Peak Current Through Any Switches

(Pulsed at 1ms, 10% duty cycle).................................±240mA

Continuous Power Dissipation (T

A

= +70°C)
42-Pin Thin QFN-EP (derate 35.7mW/°C above

+70°C).....................................................................2857.1mW

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

ELECTRICAL CHARACTERISTICS

(VDD= +3.0V to +3.6V, TA= T

MIN

to T

MAX

. Typical values are at VDD= +3.3V, TA= +25°C, unless otherwise noted.) (Note 2)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Supply Voltage Range V

DD

3.0 3.6 V

Quiescent Supply Current I

DD

+3V ≤ VDD≤ +3.6V; SEL = 0V or V

DD

600 1100 µA

ANALOG SWITCH

TA = +25°C 8 11

VDD = +3V, 0V ≤ V

COM_

≤ VDD, I

COM_

= -40mA

T

A

= T

MIN

to

T

MAX

15

TA = +25°C 8 11

On-Resistance (Note 3) R

ON

VDD = +3V,
I

COM_

= -40mA,

0 ≤ V

COM_

≤ 1.5V

T

A

= T

MIN

to

T

MAX

15

Ω

TA = +25°C 0.28 0.40

VDD = +3V, 1.5V
≤ V

COM_

≤ VDD,

I

COM_

= -40mA

T

A

= T

MIN

to

T

MAX

0.8

TA = +25°C 0.28 0.40

On-Resistance Matching
(Notes 3, 4)

ΔR

ON

VDD = +3V, 0 ≤ V

COM_

≤ 1.5V, I

COM_

= -40mA

T

A

= T

MIN

to

T

MAX

0.8

Ω

TA = +25°C 0.02 0.60

VDD = +3V,
I

COM_

= -40mA,

1.5V < V

COM_

< V

DD

TA = T

MIN

to

T

MAX

1

TA = +25°C 0.02 0.60

On-Resistance Flatness
(Note 3)

R

FLAT(ON

)

VDD = +3V,
I

COM_

= -40mA,

0 ≤ V

COM_

≤ 1.5V

T

A

= T

MIN

to

T

MAX

1

Ω

Leakage Current I

L

VDD = +3.6V, V

COM_

= +0.3V, +3.3V,

V

NC_

or V

NO_

= +3.3V, 0.3V

-1 +1 µA

SWITCH DYNAMIC

Off-Capacitance C

OFF

f = 1MHz, V

COM_

= V

NC_

or V

NO_

1.5 pF

Note 1: Signal exceeding VDDor GND are clamped by internal diodes. Limit forward-diode current to maximum current rating.

MAX4886

Quad, High-Speed HDMI/DVI 2:1 Digital Video

Switch

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(VDD= +3.0V to +3.6V, TA= T

MIN

to T

MAX

. Typical values are at VDD= +3.3V, TA= +25°C, unless otherwise noted.) (Note 2)

Note 2: Maximum and minimum limits over temperature are guaranteed by design and characterization. Device is production tested

at T

A

= +25°C.

Note 3: Negative current is going into COM_ and out of NO_ or NC_.
Note 4: Guaranteed by design.

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

On-Capacitance C

ON

f = 1MHz, V

COM_

= V

NC_

or V

NO_

2.5 pF

Propagation Delay t

PD1

,

t

PD2RS

= RL = 50Ω (Figure 2) 100 ps

Output Skew Between Ports t

SKEW1

Skew between any two ports, RS = RL =
50Ω (Figure 3)

20 ps

Skew Between Same Ports t

SKEW2

RS = RL = 50Ω, skew between any two
ports (Figure 3)

20 ps

SWITCH AC PERFORMANCE

On-Channel -3dB Bandwidth BW RS = RL= 50Ω (Figure 4) 2.6 GHz

Insertion Loss I

LOS

RS = RL = 50Ω, f = 50M Hz ( Fi gur e 4) 0.6 dB

Off-Isolation V

ISO

RS = RL = 50Ω, single-ended, f = 50MHz
(Figure 4)

-58 dB

Crosstalk V

CT1

Crosstalk between any two switches,
R

S

= RL = 50Ω, f = 50MHz (Figure 4)

-49 dB

LOGIC INPUTS (SEL)

Input-Low Voltage V

IL

VDD = +3.0V 0.8 V

Input-High Voltage V

IH

VDD = +3.6V 2.0 V

Input-Voltage Hysteresis V

HYST

100 mV

Input Leakage Current I

LEAK

VDD = +3.6V, V

COM_

or V

NC_

or V

NO_

= 0V -1 +1 µA

MAX4886

Quad, High-Speed HDMI/DVI 2:1 Digital Video
Switch

4 _______________________________________________________________________________________

Typical Operating Characteristics

(TA = +25°C, unless otherwise noted.)

1 10 1000100 10,000

FREQUENCY RESPONSE

FREQUENCY (MHz)

ON-LOSS (dB)

0

-8

-1

-2

-3

-4

-5

-6

-7

MAX4886 toc05

LEAKAGE CURRENT vs. TEMPERATURE

TEMPERATURE (°C)

LEAKAGE CURRENT (nA)

MAX4886 toc04

-40 -15 10 35 60 85

0.1

1

10

ON-RESISTANCE vs. V

COM_

V

COM_

(V)

ON-RESISTANCE (Ω)

MAX4886 toc01

0 0.6 1.2 1.8 2.4 3.0 3.6

7.2

7.3

7.4

7.5

7.6

7.7

7.8

7.9

8.0

8.1

8.2

VDD = 3.6V

VDD = 3V

VDD = 3.3V

ON-RESISTANCE vs. TEMPERATURE

V

COM_

(V)

ON-RESISTANCE (Ω)

MAX4886 toc02

0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0 3.3

0

1

2

3

4

5

6

7

8

9

10

TA = -40°C

TA = +85°C

TA = +25°C

SUPPLY CURRENT vs. SUPPLY VOLTAGE

VDD (V)

SUPPLY CURRENT (μA)

MAX4886 toc03

3.0 3.1 3.2 3.3 3.4 3.5 3.6

400

450

500

550

600

650

700

TA = +25°C

TA = +85°C

TA = -40°C