Rainbow Electronics MAX9597 User Manual

General description, Features, Ordering information

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General Description

The MAX9597 single SCART interface routes audio and
video signals between a set-top box decoder chip and
an external SCART connector under I

2

C control.

Operating from a 3.3V supply and a 12V supply, the
MAX9597 consumes 53mW during quiescent operation
and 254mW during average operation when driving
typical signals into typical loads.

The MAX9597 audio section contains left and right audio
paths with an independent operational amplifier at the
inputs. The DirectDrive

®

output amplifiers create a

2V

RMS

full-scale audio signal biased around ground,

eliminating the need for bulky output capacitors and
reducing click-and-pop noise. The zero-cross detection
circuitry also further reduces clicks and pops by
enabling audio sources to switch only during a zero-
crossing.

The MAX9597 video section contains 4 channels of
video filter amplifiers. The standard-definition video sig-
nals from the set-top box decoder chip are lowpass fil-
tered to remove out-of-bandwidth artifacts. The
MAX9597 also supports slow-switching and fast-switch-
ing signals.

The MAX9597 is available in a compact 28-pin thin
QFN package and is specified over the 0°C to +70°C
commercial temperature range.

Features

53mW Quiescent Power Consumption
5µW Shutdown Consumption
Audio Operational Amplifiers to Create Input

Filters

Clickless/Popless, DirectDrive Audio
Video Reconstruction Filter with 10MHz Passband

and 43dB Attenuation at 27MHz

3.3V and 12V Supply Voltages

MAX9597

Low-Power Audio/Video Interface

for Single SCART Connectors

________________________________________________________________

Maxim Integrated Products

1

19-4159; Rev 1; 10/08

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.

EVALUATION KIT

AVAILABLE

Ordering Information

+

Denotes a lead-free/RoHS-compliant package.

*

EP = Exposed pad.

PART

TEMP RANGE

PIN-PACKAGE

MAX9597CTI+

0°C to +70°C

28 TQFN-EP*

I

2

C INTERFACE

AND REGISTERS

MAX9597

VIDEO FILTERS

AUDIO

WITH DirectDrive

OUTPUTS

SLOW SWITCHING

FAST SWITCHING

CHARGE PUMP

V

12

V

AUD

V

ID

12V

3.3V

3.3V

EP

GND

μC

VIDEO

ENCODER

STEREO

AUDIO

DAC

RGB, Y/C, CVBS

SINGLE OR

DIFFERENTIAL

STEREO AUDIO

STB CHIP

I

2

C

RGB, Y/C, CVBS

L/R AUDIO

FAST AND SLOW SWITCHING

TV

SCART

System Block Diagram

Applications

Set-Top Boxes

AV Receivers

TVs

DVD Players

DirectDrive is a registered trademark of Maxim Integrated
Products, Inc.

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