MAX4549EAX-T Maxim Integrated Products, MAX4549EAX-T Datasheet

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MAX4549EAX-T

Manufacturer Part Number
MAX4549EAX-T
Description
Analog & Digital Crosspoint ICs
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX4549EAX-T

Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX4548/MAX4549 serial-interface, programmable,
triple 3x2 audio/video crosspoint switches are ideal for
multimedia applications. The devices include three
crosspoint switch matrices, each containing three inputs
and two outputs. To improve off-isolation, each switch
matrix has a shunt input and each output is selectively
programmable for clickless or regular-mode operation. A
selectable set of internal resistive voltage dividers sup-
plies DC bias for each output when using AC-coupled
inputs. To improve crosstalk, the voltage dividers include
four externally accessible bypass points.
The MAX4548/MAX4549 feature 35Ω max on-resis-
tance, 7Ω on-resistance matching between channels,
5Ω on-resistance flatness, and 0.07% total harmonic
distortion (THD). Additionally, they feature off-isolation
of -85dB at 20kHz and -72dB at 10MHz, with crosstalk
of -85dB at 20kHz and -55dB at 10MHz. The MAX4548
uses a 2-wire I
the MAX4549 uses a 3-wire SPI™/QSPI™/MICROWIRE™-
compatible serial interface. These parts are available in
36-pin SSOP packages and are specified for the
extended (-40°C to +85°C) operating range.
19-1496; Rev 0; 6/99
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.
Functional Diagram appears at end of data sheet.
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
I
2
MAX4548EAX
MAX4549EAX
C is a trademark of Philips Corp.
PART
Set-Top Boxes
PC Multimedia Boards
Video Conferencing Systems
High-End Audio Systems
Security Systems
Serially Controlled, Triple 3x2 Audio/Video
2
C™-compatible serial interface, while
________________________________________________________________ Maxim Integrated Products
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
Ordering Information
General Description
Applications
36 SSOP
36 SSOP
PIN-PACKAGE
( ) ARE FOR MAX4549
TOP VIEW
2Ω Typical On-Resistance Flatness
Selectable Soft-Switching Mode for “Clickless”
Audio Operation
22Ω Typical On-Resistance (+5V Supply)
5Ω Typical On-Resistance Matching Between
Channels
Audio Performance
Video Performance
Serial Interface
Single-Supply Operation from +2.7V to +5.5V
Crosspoint Switches
-85dB Off-Isolation at 20kHz
-85dB Crosstalk at 20kHz
0.07% THD with 600Ω Load
-72dB Off-Isolation at 10MHz
-55dB Crosstalk at 10MHz
2-Wire I
3-Wire SPI/QSPI/MICROWIRE-Compatible
SCL (SCLK)
SDA (DIN)
(MAX4549)
CBIASH
NO1C
NO2C
NO3C
NO1A
NO2A
N01B
N02B
N03A
N03B
GND
GND
SC
SA
SB
V+
2
10
11
12
13
14
15
16
17
18
C-Compatible (MAX4548)
1
2
3
4
5
6
7
8
9
MAX4548
MAX4549
SSOP
Pin Configuration
Features
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
19
20
CBIASL
COM1C
MID5
COM2C
GND
COM1A
MID1
COM1B
MID2
COM2A
MID3
COM2B
MID4
ABIASH
ABIASL
V+
A0 (CS)
A1 (DOUT)
1

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MAX4549EAX-T Summary of contents

Page 1

... Video Conferencing Systems High-End Audio Systems Security Systems Ordering Information PART TEMP. RANGE MAX4548EAX -40°C to +85°C MAX4549EAX -40°C to +85°C Functional Diagram appears at end of data sheet. SPI and QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp trademark of Philips Corp. ...

Page 2

Serially Controlled, Triple 3x2 Audio/Video Crosspoint Switches ABSOLUTE MAXIMUM RATINGS V+ to GND ................................................................-0.3V to +6V NO_ _, S_, MID_, BYP, COM_ _, CBIASL, ABIASL, CBIASH, ABIASH, DOUT to GND (Note 1)......................................................-0.3V to (V+ + 0.3V) CS, A0, A1, SDA, ...

Page 3

Serially Controlled, Triple 3x2 Audio/Video ELECTRICAL CHARACTERISTICS—Single +5V Supply (continued) (V+ = +5V ±5 unless otherwise noted. Typical values are MIN MAX PARAMETER SYMBOL VIDEO PERFORMANCE Off-Isolation (Note 7) V ISO(V) ...

Page 4

Serially Controlled, Triple 3x2 Audio/Video Crosspoint Switches ELECTRICAL CHARACTERISTICS—Single +3V Supply (continued) (V+ = +3V ±10 unless otherwise noted. Typical values are MIN MAX PARAMETER SYMBOL NO_ Off-Leakage ...

Page 5

Serially Controlled, Triple 3x2 Audio/Video I/O INTERFACE CHARACTERISTICS (V+ = +2.7V to +5.25V MIN MAX PARAMETER SYMBOL CS, SCL, SDA, A0, A1) DIGITAL INPUTS (SCLK, DIN, Input Low Voltage V Input High Voltage V ...

Page 6

Serially Controlled, Triple 3x2 Audio/Video Crosspoint Switches 3-WIRE TIMING CHARACTERISTICS (Figure 5) (V+ = +2.7V to +5.25V MIN MAX PARAMETER SYMBOL Operating Frequency f OP DIN to SCLK Setup t DS DIN to SCLK ...

Page 7

Serially Controlled, Triple 3x2 Audio/Video (V+ = +5V +25°C, unless otherwise noted.) A SUPPLY CURRENT vs. TEMPERATURE 6.8 . 6.6 6.4 6.2 6.0 5.8 5.6 5.4 5.2 5.0 4.8 -40 - TEMPERATURE (°C) VIDEO ...

Page 8

Serially Controlled, Triple 3x2 Audio/Video Crosspoint Switches (V+ = +5V +25°C, unless otherwise noted.) A ON/OFF TIME vs. TEMPERATURE (HARD MODE) 300 TURN-ON TIME 250 200 TURN-ON TIME 150 TURN-OFF TIME, V+ ...

Page 9

Serially Controlled, Triple 3x2 Audio/Video PIN NAME MAX4548 MAX4549 1 1 NO1C 2 2 CBIASH 3 3 NO2C NO3C NO1A 8 8 NO1B ...

Page 10

Serially Controlled, Triple 3x2 Audio/Video Crosspoint Switches PIN NAME MAX4548 MAX4549 26 26 MID3 27 27 COM2A 28 28 MID2 29 29 COM1B 30 30 MID1 31 31 COM1A 33 33 COM2C 34 34 MID5 35 35 COM1C 36 36 ...

Page 11

Serially Controlled, Triple 3x2 Audio/Video MAX4548 MAX4549 R S NO1_ SIGNAL GENERATOR 2/3 DECODER/ ENCODER V+ GND 10nF Figure 2a. Off-Isolation 10k SIGNAL GENERATOR MAX4548 10k MAX4549 Figure 2b. Crosstalk ______________________________________________________________________________________ Crosspoint Switches V+/ ...

Page 12

Serially Controlled, Triple 3x2 Audio/Video Crosspoint Switches Table 1. Command-Byte Format BIT REGISTER C7 Clickless Mode C6 Bias C5 COM2C C4 COM1C C3 COM2B C2 COM1B C1 COM2A C0 COM1A Audio off-isolation is -85dB at 20kHz, crosstalk is -85dB at ...

Page 13

Serially Controlled, Triple 3x2 Audio/Video Command-Byte and Data-Byte The devices are programmed with a command byte and a data byte or data word (2 bytes). Each bit of the command byte selects one of the functional blocks to be controlled ...

Page 14

Serially Controlled, Triple 3x2 Audio/Video Crosspoint Switches Table 4. Clickless Mode Format (C7 = “1”) BIT D7 Don’t care D6 Don’t care D5 Controls COM2C clickless mode enables clickless mode disables clickless mode. D4 Controls COM1C ...

Page 15

Serially Controlled, Triple 3x2 Audio/Video CS SCLK 1 DIN C7 Figure 6. 3-Wire Serial-Interface Communication CS t CSS t CSH SCLK DIN t DV DOUT Figure 7. 3-Wire Serial-Interface Timing Details the same configuration. Any block ...

Page 16

Serially Controlled, Triple 3x2 Audio/Video Crosspoint Switches Slave Address (Address Byte) The MAX4548 uses an 8-bit slave address. To select a slave address, connect A0 and GND. The MAX4548 has four possible slave addresses, thus a ...

Page 17

Serially Controlled, Triple 3x2 Audio/Video 7 NO1A 10 NO2A 13 NO3A NO1B 11 NO2B 14 NO3B NO1C 3 NO2C 5 NO3C 15, 16, 32 GND 23 ABIASH 2 CBIASH ...

Page 18

Serially Controlled, Triple 3x2 Audio/Video Crosspoint Switches ________________________________________________________Package Information 18 ______________________________________________________________________________________ Chip Information TRANSISTOR COUNT: 7700 SUBSTRATE IS INTERNALLY CONNECTED TO V+. ...

Page 19

Serially Controlled, Triple 3x2 Audio/Video ______________________________________________________________________________________ Crosspoint Switches NOTES 19 ...

Page 20

... Maxim reserves the right to change the circuitry and specifications without notice at any time. implied. Maxim reserves the right to change the circuitry and specifications without notice at any time ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 1999 Maxim Integrated Products © ...

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