MAX4550-MAX4570 Maxim, MAX4550-MAX4570 Datasheet

MAX4550-MAX4570

Manufacturer Part Number

MAX4550-MAX4570

Description

Serially Controlled / Dual 4x2 / Clickless Audio/Video Analog Crosspoint Switches

Manufacturer

Maxim

Datasheet

1.MAX4550-MAX4570.pdf (16 pages)

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The MAX4550/MAX4570 serial-interface, programma-

ble, dual 4x2 audio/video crosspoint switches are ideal

for multimedia applications. Each device contains two

identical crosspoint switch arrays, each with four inputs

and two outputs. To improve off-isolation, use the addi-

tional crosspoint inputs SA and SB as shunts. Each out-

put is selectively programmable for clickless or regular

mode operation. A set of internal resistive voltage-

dividers supplies DC bias for each output when using

AC-coupled inputs. Additionally, four auxiliary outputs

control additional circuitry via the MAX4550/MAX4570’s

2-wire or 3-wire interface.

The MAX4550/MAX4570 feature 80Ω on-resistance, 10Ω

on-resistance matching between channels, 5Ω on-

resistance flatness, and 0.014% total harmonic distor-

tion. Additionally, they feature off-isolation of at least

-110dB in the audio frequency range and -78dB at

4MHz, with -95dB crosstalk in the audio frequency

range and -54dB at 4MHz. The MAX4550 uses a 2-wire

uses a 3-wire SPI™/QSPI™ or MICROWIRE™-compati-

ble serial interface. These parts are available in 28-pin

SSOP and wide SO packages and are tested over

either the commercial (0°C to +70°C) or extended

(-40°C to +85°C) operating temperature range.

19-1397; Rev 0; 10/98

SPI/QSPI are trademarks of Motorola, Inc.

MICROWIRE is a trademark of National Semiconductor Corp.

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.

For small orders, phone 1-800-835-8769.

MAX4550CAI

MAX4550CWI

MAX4550EAI

MAX4550EWI

MAX4570CAI

MAX4570CWI

MAX4570EAI

MAX4570EWI

C is a trademark of Philips Corp.

C-compatible serial interface, while the MAX4570

Set-Top Boxes

PC Multimedia Boards

High-End Audio Systems

Video Conferencing Systems

PART

Audio/Video Analog Crosspoint Switches

________________________________________________________________ Maxim Integrated Products

-40°C to +85°C

TEMP. RANGE

0°C to +70°C

Serially Controlled, Dual 4x2, Clickless

Ordering Information

General Description

Applications

28 SSOP

28 Wide SO

28 SSOP

28 Wide SO

28 SSOP

28 Wide SO

28 SSOP

28 Wide SO

PIN-PACKAGE

Functional Diagram appears at end of data sheet.

Selectable Soft Switching Mode for Clickless

Audio Operation

43Ω Typical On-Resistance (±5V Supplies)

5Ω Typical On-Resistance Matching Between

Channels

4Ω Typical On-Resistance Flatness

0.014% Total Harmonic Distortion with 1kΩ Load

-110dB Off-Isolation at 20kHz

-78dB Off-Isolation at 4MHz

-95dB Crosstalk at 20kHz

-54dB Crosstalk at 4MHz

Serial Interface

2-Wire, Fast-Mode, I

3-Wire, SPI/QSPI/MICROWIRE-Compatible

(MAX4570)

Four Auxiliary Outputs that Extend µP Ports

Single-Supply Operation: +2.7V to +5.5V

Dual-Supply Operation: ±2.7V to ±5.5V

( ) ARE FOR MAX4570.

TOP VIEW

SCL (SCLK)

COM2A

COM2B

A0 (CS)

BIASH

BIASL

NO3A

NO3B

NO4A

NO4B

V+

C-Compatible (MAX4550)

SO/SSOP

MAX4550

MAX4570

Pin Configuration

NO2B

NO2A

V-

V+

NO1B

NO1A

GND

COM1A

COM1B

A1 (DOUT)

SDA (DIN)

Features

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