OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

MAX4549EAX+T

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
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.
General Description
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
2
C™-compatible serial interface, while
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.
Applications
Set-Top Boxes
PC Multimedia Boards
Video Conferencing Systems
High-End Audio Systems
Security Systems
Features
♦ Selectable Soft-Switching Mode for “Clickless”
Audio Operation
♦ 22Ω Typical On-Resistance (+5V Supply)
♦ 5Ω Typical On-Resistance Matching Between
Channels
♦ 2Ω Typical On-Resistance Flatness
♦ Audio Performance
-85dB Off-Isolation at 20kHz
-85dB Crosstalk at 20kHz
0.07% THD with 600Ω Load
♦ Video Performance
-72dB Off-Isolation at 10MHz
-55dB Crosstalk at 10MHz
♦ Serial Interface
2-Wire I
2
C-Compatible (MAX4548)
3-Wire SPI/QSPI/MICROWIRE-Compatible
(MAX4549)
♦ Single-Supply Operation from +2.7V to +5.5V
MAX4548/MAX4549
Serially Controlled, Triple 3x2 Audio/Video
Crosspoint Switches
________________________________________________________________
Maxim Integrated Products
1
36
35
34
33
32
31
30
29
28
27
26
25
24
23
1
2
3
4
5
6
7
8
9
10
11
12
13
14
CBIASL
COM1C
MID5
COM2C
GND
COM1A
ABIASH
MID1
COM1B
MID2
COM2A
MID3
COM2B
MID4
N03B
N03A
SB
N02B
NO2A
SA
N01B
NO1A
V+
NO3C
SC
NO2C
CBIASH
NO1C
SSOP
TOP VIEW
MAX4548
MAX4549
22
21
20
19
15
16
17
18 A1 (DOUT)
( ) ARE FOR MAX4549
ABIASL
V+
A0 (CS)
SCL (SCLK)
SDA (DIN)
GND
GND
19-1496; Rev 0; 6/99
PART
MAX4548EAX
MAX4549EAX
-40°C to +85°C
-40°C to +85°C
TEMP. RANGE PIN-PACKAGE
36 SSOP
36 SSOP
Pin Configuration
Ordering Information
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
C is a trademark of Philips Corp.
MAX4548/MAX4549
Serially Controlled, Triple 3x2 Audio/Video
Crosspoint Switches
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS—Single +5V Supply
(V+ = +5V ±5%, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 2)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
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, SCL, DIN,
SCLK to GND ........................................................-0.3V to +6V
Continuous Current into Any Terminal..............................±20mA
Peak Current, NO_ _, S_, COM_ _
(pulsed at 1ms, 10% duty cycle max)...........................±40mA
Continuous Power Dissipation (T
A
= +70°C)
36-Pin SSOP (derate 11.8mW/°C above +70°C) ..........941mW
Operating Temperature Range ............................-40°C to+85°C
Storage Temperature Range..............................-65°C to+150°C
Lead Temperature (soldering, 10sec).............................+300°C
Note 1: Signals on NO_ _, S_, or COM_ _ exceeding V+ or GND are clamped by internal diodes. Limit forward diode current to
maximum rating.
0.006R
L
=10kΩ
R
L
= 600Ω
dB-85V
ISO(A)
Off-Isolation (Note 7)
-10 10
-10 10
-10 10T
A
= T
MIN
to T
MAX
T
A
= T
MIN
to T
MAX
T
A
= T
MIN
to T
MAX
7T
A
= T
MIN
to T
MAX
T
A
= T
MIN
to T
MAX
8
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
I
COM_ _
= 4mA,
V
NO_ _
or V
S_
= 3V,
V+ = 4.75V
dB-85
V
NO
_ _ = 1V
RMS
, f
IN
= 20kHz,
R
L
= R
S
= 600Ω
V
CT(A)
Channel-to-Channel Crosstalk
%
0.07
f
IN
= 1kHz, V
NO_ _
or V
S_
= 1V
RMS
+
2.5V
DC
THD+N
Total Harmonic Distortion
plus Noise
nA
-2 0.04 2
V
NO
_ _ or V
S_
= 4.5V,
1V, or floating;
V
COM_ _
= 4.5V, 1V;
V+ = 5.25V
I
COM
_ _
(ON)
COM_ _On-Leakage
Current (Note 6)
nA
-2 0.04 2
V
NO_ _
or V
S_
= 4.5V,
1V; V
COM_ _
= 1V,
4.5V; V+ = 5.25V
I
COM
_ _
(OFF)
COM_ _ Off-Leakage
Current (Note 6)
PARAMETER SYMBOL MIN TYP MAX UNITS
COM_ _ to NO_ _ or S_
On-Resistance Match
Between Channels (Note 4)
∆R
ON
57
Ω
45
On-Resistance R
ON
22 35
Ω
COM_ _ to NO_ _ or S_
On-Resistance Flatness
(Note 5)
R
FLAT
2 5
Ω
NO_ _ or S_ Off-Leakage
Current (Note 6)
I
NO
_ _
(OFF)
-2 0.04 2
nA
Analog Signal Range (Note 3)
V
NO
_ _,
V
COM
_ _,
V
S
_
0V+V
CONDITIONS
I
COM_ _
= 4mA,
V
NO_ _
or V
S_
= 3V,
V+ = 4.75V
I
COM_ _
= 4mA;
V+ = 4.75V; V
NO_ _
or V
S_
= 1V, 2V, 3V
V
NO_ _
or V
S_
= 4.5V,
1V; V
COM_ _
= 1V,
4.5V; V+ = 5.25V
ANALOG SWITCHES
AUDIO PERFORMANCE
V
NO
_ _ = 1V
RMS
, f
IN
= 20kHz, R
L
= 600Ω,
S
_
= GND, shunt switch on or off
MAX4548/MAX4549
Serially Controlled, Triple 3x2 Audio/Video
Crosspoint Switches
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS—Single +5V Supply (continued)
(V+ = +5V ±5%, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 2)
ELECTRICAL CHARACTERISTICS—Single +3V Supply
(V+ = +3V ±10%, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 2)
I
COM
_ _ = 4mA,
V
NO
_ _ or V
S_
= 1V,
V+ = 2.7V
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
8T
A
= T
MIN
to T
MAX
I
COM
_ _ = 4mA,
V
NO
_ _ or V
S_
= 1V,
V+ = 2.7V
CONDITIONS
V0V+
V
NO
_ _,
V
COM
_ _,
V
S
_
ANALOG SWITCHES
Analog Signal Range (Note 3)
Ω
40 60
R
ON
On-Resistance
80
Ω
57
∆R
ON
COM_ _ to NO_ _ or S_
On-Resistance Match
Between Channels (Note 4)
UNITSMIN TYP MAXSYMBOLPARAMETER
Off-Isolation (Note 7) V
ISO(V)
-72
dB
Channel-to-Channel Crosstalk V
CT(V)
-55
dB
V
NO_ _
or V
S_
= 0.5V
RMS
, R
S
= 50Ω,
f
IN
= 10MHz, R
L
= 50Ω,
-3dB Bandwidth BW
250
MHzR
S
= 50Ω, R
L
= 50Ω
Turn-On Time t
ONSE
12
ms
V
NO_ _
or V
S_
= 2.5V, R
L
= 5kΩ, C
L
= 35pF,
T
A
= +25°C
Turn-Off Time t
OFFSE
3
ms
V
NO_ _
or V
S_
= 2.5V, R
L
= 300Ω, C
L
= 35pF,
T
A
= +25°C
PARAMETER SYMBOL MIN TYP MAX UNITS
Turn-Off Time t
OFFSD
100 200
ns
500
Turn-On Time t
ONSD
200 400
ns
Break-Before-Make Time t
BBM
10 50
ns
Off-Capacitance C
OFF(NO)
10
pF
CONDITIONS
V
NO_ _
or V
S_
= 2.5V,
R
L
= 300Ω,
C
L
= 35pF
T
A
= T
MIN
to T
MAX
V
NO_ _
or V
S_
= 2.5V
f = 1MHz
250
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
V
NO_ _
or V
S_
= 2.5V,
R
L
= 5kΩ, C
L
= 35pF
Bias Network Resistance R
BIAS
110
kΩ
Supply Voltage Range V+
2.7 5.5
V
Supply Current (Note 9) I+ All logic inputs = GND or V+
610
µA
Shunt switch on
Shunt switch off
V
NO_ _
or V
S_
= 1V
RMS
,
f
IN
= 10MHz, R
L
= 50Ω,
R
S
=50Ω, S_ = GND
-62
T
A
= +25°C
8T
A
= T
MIN
to T
MAX
I
COM_ _
= 4mA;
V+ = 2.7V;
V
NO_ _
= 1V, 1.5V, 2V
Ω
36
R
FLAT
COM_ _ to NO_ _ or S_
On-Resistance Flatness
(Note 5)
ANALOG SWITCHES
VIDEO PERFORMANCE
DYNAMIC TIMING WITH CLICKLESS MODE DISABLED (Note 8, Figure 1)
DYNAMIC TIMING WITH CLICKLESS MODE ENABLED (Note 8, Figure 1)
BIAS NETWORKS
POWER SUPPLIES
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

MAX4549EAX+T

Mfr. #:
Buy MAX4549EAX+T
Manufacturer:
Maxim Integrated
Description:
Analog & Digital Crosspoint ICs Triple 3x2 A/V Crosspoint Switch
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet