General Description

The MAX9541/MAX9542 are quadruple-channel, 2:1

video mux amplifiers with input sync tip clamps. These

devices select between two video sources and support

up to four channels on each source. The MAX9541 has

integrated lowpass filters that are optimized for standard-

definition video signals such as composite and red,

green, blue (RGB). The filters typically have ±1dB pass-

band flatness out to 9.5MHz and 47dB attenuation at

27MHz. The MAX9542 has a wider bandwidth of 15MHz

because it does not have integrated lowpass filters, mak-

ing it suitable for not only standard-definition video sig-

nals, but also video graphics array (VGA) signals with a

640 x 480 resolution at up to 85Hz refresh rate.

Video signals are AC-coupled to the inputs of the

MAX9541/MAX9542. The input sync-tip clamps set the

internal DC level.

The amplifiers have 2V/V gain, and the outputs can be

DC-coupled to a 75

Ω load, which is the equivalent of two

video loads, or AC-coupled to a 150

Ω load.

Both the MAX9541/MAX9542 feature a low-power shut-

down mode, in which supply current is reduced to 35µA.

Applications

Automotive Infotainment

Features

♦ Quad 2:1 Video Mux Amplifiers

♦ Reconstruction Filters with 9.5MHz Passband and

47dB Attenuation at 27MHz (MAX9541)

♦ Fixed Gain of 2V/V

♦ Input Sync-Tip Clamps

♦ Shutdown

♦ 2.7V to 3.6V Single-Supply Operation

Quadruple, 2:1, Mux Amplifiers for

Standard-Definition and VGA Signals

________________________________________________________________

Maxim Integrated Products

1

19-4457; Rev 0; 2/09

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.

UNKNOWN

BIAS

300mV

IN2A

IN3A

OUT1

IN1A

IN0A

OUT0

OUT3

OUT2

IN3B

IN2B

IN1B

IN0B

A/B

0

1

0

1

0

1

0

1

GND

MAX9541

MAX9542

SHDN

LPF*

CLAMPREF

2V/V

LPF*

CLAMPREF

2V/V

LPF*

CLAMPREF

2V/V

LPF*

CLAMPREF

2V/V

*LOWPASS FILTER IN MAX9541 ONLY.

Functional Diagram

Ordering Information

PART

PIN-PACKAGE

STANDARD-

DEFINITION

VIDEO FILTER

MAX9541AEE+

16 QSOP

Yes

MAX9542AEE+

16 QSOP

No

Note: All devices are specified over the -40°C to +125°C oper-

ating temperature range.

+

Denotes a lead(Pb)-free/RoHS-compliant package.