MAX4550CAI Maxim Integrated Products, MAX4550CAI Datasheet

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MAX4550CAI

Manufacturer Part Number
MAX4550CAI
Description
Analog & Digital Crosspoint ICs
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX4570EAI.pdf (16 pages)

Specifications of MAX4550CAI

Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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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
I
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
I
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.
2
2
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
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
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
SB
Q0
Q1
V+
10
11
12
13
14
1
2
3
4
5
6
7
8
9
2
C-Compatible (MAX4550)
SO/SSOP
MAX4550
MAX4570
Pin Configuration
28
27
26
25
24
23
22
21
20
19
18
17
16
15
SA
NO2B
NO2A
V-
V+
NO1B
NO1A
GND
COM1A
Q3
COM1B
Q2
A1 (DOUT)
SDA (DIN)
Features
1

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MAX4550CAI Summary of contents

Page 1

... Set-Top Boxes PC Multimedia Boards High-End Audio Systems Video Conferencing Systems Ordering Information PART TEMP. RANGE MAX4550CAI 0°C to +70°C MAX4550CWI 0°C to +70°C MAX4550EAI -40°C to +85°C MAX4550EWI -40°C to +85°C MAX4570CAI 0° ...

Page 2

Serially Controlled, Dual 4x2, Clickless Audio/Video Analog Crosspoint Switches ABSOLUTE MAXIMUM RATINGS V+ to GND ............................................................... -0. V-................................................................-0.3V to +13. GND .................................................................+0.3V to -6V NO_ _ , S_, BIAS_, COM_ _, Q_, A1, DOUT ...

Page 3

Serially Controlled, Dual 4x2, Clickless Audio/Video Analog Crosspoint Switches ANALOG ELECTRICAL CHARACTERISTICS—Dual Supplies (continued) (V+ = +5V ±5 -5V ±5 MIN PARAMETER SYMBOL VIDEO PERFORMANCE Off-Isolation V ISO(V) Channel-to-Channel Crosstalk V CT(V) 0.1dB Bandwidth ...

Page 4

Serially Controlled, Dual 4x2, Clickless Audio/Video Analog Crosspoint Switches ANALOG ELECTRICAL CHARACTERISTICS—Single +5V Supply (continued) (V+ = +5V ±5 MIN MAX PARAMETER SYMBOL COM_ _ Off-Leakage Current I COM_ _(OFF) (Notes ...

Page 5

Serially Controlled, Dual 4x2, Clickless Audio/Video Analog Crosspoint Switches INTERFACE I/O CHARACTERISTICS (V+ = +2.7V to +5.5V -5.5V, T PARAMETER SYMBOL AUXILIARY OUTPUTS Output High Voltage V Output Low Voltage V CS, SCL, SDA) DIGITAL INPUTS ...

Page 6

Serially Controlled, Dual 4x2, Clickless Audio/Video Analog Crosspoint Switches INTERFACE I/O CHARACTERISTICS (continued) (V+ = +2.7V to +5.5V -5.5V PARAMETER SYMBOL SCLK Pulse Width Low t CH SCLK Pulse Width High t CL Rise ...

Page 7

Serially Controlled, Dual 4x2, Clickless Audio/Video Analog Crosspoint Switches (T = +25°C, unless otherwise noted.) A ON-RESISTANCE vs. V AND COM TEMPERATURE (SINGLE SUPPLY + +85° +70°C 65 ...

Page 8

Serially Controlled, Dual 4x2, Clickless Audio/Video Analog Crosspoint Switches (T = +25°C, unless otherwise noted.) A FREQUENCY RESPONSE 2 V± = ± 0 100 500 FREQUENCY (MHz) COM ...

Page 9

Serially Controlled, Dual 4x2, Clickless Audio/Video Analog Crosspoint Switches PIN NAME MAX4550 MAX4570 NO3A 3 3 NO3B 4 4 BIASH 5 5 BIASL 6 6 NO4A 7 7 NO4B ...

Page 10

Serially Controlled, Dual 4x2, Clickless Audio/Video Analog Crosspoint Switches Detailed Description The MAX4550/MAX4570 are serial-interface, program- mable, dual 4x2 audio/video crosspoint switches. Each device contains two independent 4x2 crosspoint switches, controlled through the on-chip serial inter- 2 face. The MAX4550 ...

Page 11

Serially Controlled, Dual 4x2, Clickless Audio/Video Analog Crosspoint Switches Table 3. AUX_ Data-Byte Format (C4 = “1”) BIT DESCRIPTION D7 Don’t care D6 Don’t care D5 Don’t care D4 Don’t care Controls output Q3 set output high, D3 ...

Page 12

Serially Controlled, Dual 4x2, Clickless Audio/Video Analog Crosspoint Switches Table 5. 2-Wire Serial-Interface Data Format ADDRESS BYTE ...

Page 13

Serially Controlled, Dual 4x2, Clickless Audio/Video Analog Crosspoint Switches Figures 3, 4, and Table 6 show the details of the 3-wire protocol applies to the MAX4570. DOUT is the shift register’s output. Data at DOUT is simply the ...

Page 14

Serially Controlled, Dual 4x2, Clickless Audio/Video Analog Crosspoint Switches Table 6. 3-Wire Serial-Interface Data Format COMMAND BYTE MSB BIAS AUX COM2B X = Don’t care Addressable Serial Interface To program several MAX4570s individually ...

Page 15

Serially Controlled, Dual 4x2, Clickless Audio/Video Analog Crosspoint Switches 22 NO1A 26 NO2A 2 NO3A 6 NO4A 28 SA SWITCH MATRIX ‘A’ 23 NO1B 27 NO2B 3 NO3B 7 NO4B 1 SB SWITCH MATRIX ‘B’ ...

Page 16

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 16 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 1998 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products ...

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