Evaluation Kit
Available
Design
Resources
Tools
and Models
Support
Click here to ask an associate for production status of specific part numbers.
MAX4565/MAX4566/
MAX4567
Quad/Dual, Low-Voltage,
Bidirectional RF/Video Switches
General Description
Features
The MAX4565/MAX4566/MAX4567 are low-voltage
T-switches designed for switching RF and video signals from
DC to 350MHz in 50Ω and 75Ω systems. The MAX4565
contains four normally open single-pole/single-throw (SPST)
switches. The MAX4566 contains two dual SPST switches
(one normally open, one normally closed.) The MAX4567
contains two single-pole/double-throw (SPDT) switches.
Each switch is constructed in a “T” configuration, ensuring excellent high-frequency off isolation and crosstalk of
-83dB at 10MHz. They can handle rail-to-rail analog signals
in either direction. On-resistance (60Ω max) is matched
between switches to 2.5Ω max and is flat (2Ω max) over the
specified signal range, using ±5V supplies. The off leakage
current is less than 5nA at +25°C and 50nA at +85°C.
These CMOS switches can operate with dual power supplies ranging from ±2.7V to ±6V or a single supply between
+2.7V and +12V. All digital inputs have 0.8V/2.4V logic
thresholds, ensuring both TTL- and CMOS-logic compatibility when using ±5V or a single +5V supply.
●
●
●
●
●
●
●
●
●
●
●
●
●
Applications
●
●
●
●
●
●
High 50Ω Off Isolation: -83dB at 10MHz
Low 50Ω Crosstalk: -87dB at 10MHz
DC to 350MHz -3dB Signal Bandwidth
60Ω Signal Paths with ±5V Supplies
2.5Ω Signal-Path Matching with ±5V Supplies
2Ω Signal-Path Flatness with ±5V Supplies
Low 50Ω Insertion Loss: 2.5dB at 100MHz
±2.7V to ±6V Dual Supplies
+2.7V to +12V Single Supply
Low Power Consumption: 2kV ESD Protection per Method 3015.7
TTL/CMOS-Compatible Inputs
with Single +5V or ±5V
Ordering Information
RF Switching
Video Signal Routing
High-Speed Data Acquisition
Test Equipment
ATE Equipment
Networking
PART
TEMP. RANGE
PIN-PACKAGE
MAX4565CPP
0°C to +70°C
20 Plastic DIP
MAX4565CWP
0°C to +70°C
20 Wide SO
Ordering Information continued at end of data sheet.
Pin Configurations/Functional Diagrams/Truth Tables
TOP VIEW
IN1 1
20 IN2
COM1 2
19 COM2
GND1 3
18 GND2
MAX4566
V- 5
MAX4565
GND5 6
N04 7
16 V+
15 GND6
13 GND3
COM4 9
12 COM3
IN4 10
IN1 1
16 N02
15 COM2
N01 2
15 V+
GND1 3
14 GND2
V- 3
14 GND2
13 NO2
GND1 4
13 COM2
12 V+
COM1 5
12 GND3
11 NC3
GND4 6
11 V-
N01 4
14 N03
GND4 8
16 IN2
COM1 2
IN1 1
17 NO2
N01 4
V- 5
NC4 6
11 IN3
GND4 7
10 GND3
V+ 7
COM4 8
9 COM3
NC1 8
DIP/SO/SSOP
DIP/SO/QSOP
MAX4565
LOGIC
SWITCH
SWITCHES SHOWN
FOR LOGIC “0” INPUT
0
1
MAX4567
OFF
ON
10 NC2
9 IN2
DIP/SO/QSOP
MAX4567
LOGIC
MAX4566
1, 2
3, 4
LOGIC
NO-COM
NC-COM
0
1
OFF
ON
ON
OFF
0
1
OFF
ON
ON
OFF
19-1252; Rev 1; 2/21
© 2021 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners.
One Analog Way, Wilmington, MA 01887 U.S.A.
|
Tel: 781.329.4700
|
© 2021 Analog Devices, Inc. All rights reserved.
MAX4565/MAX4566/
MAX4567
Quad/Dual, Low-Voltage,
Bidirectional RF/Video Switches
Absolute Maximum Ratings
(Voltages Referenced to GND)
V+........................................................................... -0.3V, +13.0V
V- ............................................................................ -13.0V, +0.3V
V+ to V-.................................................................. -0.3V, +13.0V
All Other Pins (Note 1).........................(V- - 0.3V) to (V+ + 0.3V)
Continuous Current into Any Terminal...............................±25mA
Peak Current into Any Terminal
(pulsed at 1ms, 10% duty cycle)...................................±50mA
ESD per Method 3015.7...................................................>2000V
Continuous Power Dissipation (TA = +70°C) (Note 2)
16-Pin Plastic DIP
(derate 10.53mW/°C above +70°C)...........................842mW
16-Pin Narrow SO
(derate 8.70mW/°C above +70°C).............................696mW
16-Pin QSOP (derate 8.3mW/°C above +70°C)..........667mW
20-Pin Plastic DIP (derate 8.0mW/°C above +70°C)..... 640mW
20-Pin Wide SO (derate 10.00mW/°C above +70°C).... 800mW
20-Pin SSOP (derate 8.0mW/°C above +70°C)...........640mW
Operating Temperature Ranges
MAX456_C_ E.....................................................0°C to +70°C
MAX456_E_ E................................................. -40°C to +85°C
Storage Temperature Range............................. -65°C to +150°C
Lead Temperature (soldering, 10sec).............................. +300°C
Note 1: Voltages on all other pins exceeding V+ or V- are clamped by internal diodes. Limit forward diode current to maximum current
rating.
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.
Electrical Characteristics—Dual Supplies
(V+ = +4.5V to +5.5V, V- = -4.5V to -5.5V, VINL = 0.8V, VINH = 2.4V, VGND_ = 0V, TA = TMIN to TMAX, unless otherwise noted. Typical
values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
TA
MIN
C, E
V-
TYP
(Note 2)
MAX
UNITS
V+
V
ANALOG SWITCH
Analog Signal Range
Signal-Path On-Resistance
Signal-Path On-Resistance Match
Between Channels (Note 4)
VCOM_,
VNO_, VNC_
R
ON
ΔRON
(Note 3)
V+ = 4.5V, V- = -4.5V,
VCOM_ = ±2V, ICOM_ = 10mA
+25°C
V+ = 4.5V, V- = -4.5V,
VCOM_ = ±2V, ICOM_ = 10mA
+25°C
46
C, E
80
1
C, E
RFLAT(ON)
V+ = 5V; V- = -5V; VCOM_ = 1V,
0V, -1V; ICOM = 10mA
NO_, NC_ Off Leakage Current
(Note 6)
INO_(OFF),
INC_(OFF)
V+ = 5.5V, V- = -5.5V,
VCOM_ = ±4.5V, VN_ = ± 4.5V
+25°C
-1
C, E
-10
COM_ Off Leakage Current
(Note 6)
ICOM_(OFF)
V+ = 5.5V, V- = -5.5V,
VCOM_ = ±4.5V, VN_ = ± 4.5V
+25°C
-1
C, E
-10
COM_ On Leakage Current
(Note 6)
ICOM_(ON)
V+ = 5.5V, V- = -5.5V,
VCOM_ = ±4.5V
+25°C
-2
C, E
-20
IN_ Input Logic Threshold High
IN_ Input Logic Threshold Low
IN_ Input Current Logic High or
Low
www.analog.com
VIN_H
IINH_, IINL_
+25°C
0.3
C, E
VIN_L
VIN_ = 0.8V or 2.4V
2.5
3
Signal-Path On-Resistance
Flatness (Note 5)
LOGIC INPUT
60
0.02
2
1
10
0.02
1
10
0.04
2
20
1.5
C, E
0.8
1.5
C, E
-1
0.03
2.4
Ω
Ω
Ω
nA
nA
nA
V
V
1
µA
Analog Devices │ 2
MAX4565/MAX4566/
MAX4567
Quad/Dual, Low-Voltage,
Bidirectional RF/Video Switches
Electrical Characteristics—Dual Supplies (continued)
(V+ = +4.5V to +5.5V, V- = -4.5V to -5.5V, VINL = 0.8V, VINH = 2.4V, VGND_ = 0V, TA = TMIN to TMAX, unless otherwise noted. Typical
values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
TA
MIN
TYP
(Note 2)
MAX
UNITS
SWITCH DYNAMIC CHARACTERISTICS
+25°C
C, E
+25°C
C, E
75
150
200
100
120
Turn-On Time
tON
VCOM_ = ±3V, V+ = 5V,
V- = -5V, Figure 3
Turn-Off Time
tOFF
VCOM_ = ±3V, V+ = 5V,
V- = -5V, Figure 3
Break-Before-Make Time Delay
(MAX4566/MAX4567 only)
tBBM
VCOM_ = ±3V, V+ = 5V,
V- = -5V, Figure 4
+25°C
Q
CL = 1.0nF, VNO_ = 0V,
RS = 0Ω, Figure 5
+25°C
25
CN_(OFF)
VNO_ = GND, f = 1MHz,
Figure 7
+25°C
2.5
pF
+25°C
2.5
pF
Charge Injection (Note 3)
NO_, NC_ Off Capacitance
COM_ Off Capacitance
CCOM_(OFF)
VCOM_ = 0V,
f = 1MHz,
Figure 7
COM_ On Capacitance
CCOM_(ON)
VCOM_ = VNO_ = 0V,
f = 1MHz, Figure 7
Off Isolation (Note 7)
VISO
RL = 50Ω,
VCOM_ = 1VRMS,
f = 10MHz, Figure 6
Channel-to-Channel Crosstalk
(Note 8)
VCT
RL = 50Ω,
VCOM_ = 1VRMS,
f = 10MHz, Figure 6
-3dB Bandwidth (Note 9)
BW
Figure 6, RL = 50Ω
VIN = 5Vp-p, f < 20kHz,
600Ω in and out
Distortion
POWER SUPPLY
Power-Supply Range
THD+N
MAX4565
MAX4566
MAX4565
MAX4566
MAX4567
MAX4565
MAX4566
MAX4567
MAX4565
MAX4566
MAX4567
V+, V-
V+ Supply Current
I+
V+ = 5.5V, all VIN_ = 0V or V+
V - Supply Current
I-
V- = -5.5V
www.analog.com
30
5
30
ns
ns
ns
60
pC
+25°C
6
6
7
-83
-82
-83
-92
-85
-87
350
MHz
+25°C
0.02
%
+25°C
+25°C
+25°C
C, E
+25°C
C, E
+25°C
C, E
-6
-1
-10
-1
-10
0.05
0.05
pF
dB
dB
+6
1
10
1
10
V
µA
µA
Analog Devices │ 3
MAX4565/MAX4566/
MAX4567
Quad/Dual, Low-Voltage,
Bidirectional RF/Video Switches
Electrical Characteristics—Single +5V Supply
(V+ = +4.5V to +5.5V, V- = 0V, VINL = 0.8V, VINH = 2.4V, VGND_ = 0V, TA = TMIN to TMAX, unless otherwise noted. Typical values are
at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
TA
MIN
(Note 3)
+25°C
0
TYP
(Note 2)
MAX
UNITS
V+
V
ANALOG SWITCH
Analog Signal Range
VCOM_,
VNO_, VNC_
Signal-Path On-Resistance
RON
V+ = 4.5V, VCOM_ = 3.5V,
ICOM_ = 1mA
+25°C
Signal-Path On-Resistance
Match
ΔRON
V+ = 4.5V, VCOM_ = 3.5V,
ICOM_ = 1mA
+25°C
68
C, E
120
150
2
C, E
5
6
Ω
Ω
NO_, NC_ Off Leakage Current
(Notes 6, 10)
INO_(OFF),
INC_(OFF)
V+ = 5.5V, VCOM_ = 1V,
VN_ = 4.5V
+25°C
-1
1
C, E
-10
10
COM_ Off Leakage Current
(Notes 6, 10)
ICOM_(OFF)
V+ = 5.5V, VCOM_ = 1V,
VN_ = 4.5V
+25°C
-1
1
C, E
-10
10
COM_ On Leakage Current
(Notes 6, 10)
ICOM_(ON)
V+ = 5.5V; VCOM_ = 1V, 4.5V
+25°C
C, E
-2
-20
2
20
C, E
C, E
1.5
1.5
2.4
0.8
V
V
C, E
-1
0.001
1
µA
130
200
250
120
150
LOGIC INPUT
IN_ Input Logic Threshold High
IN_ Input Logic Threshold Low
IN_ Input Current Logic High
or Low
VIN_H
VIN_L
IINH_, IINL_
VIN_ = 0.8V or 2.4V
nA
nA
nA
SWITCH DYNAMIC CHARACTERISTICS
+25°C
C, E
+25°C
C, E
Turn-On Time
tON
VCOM_ = 3V, V+ = 5V,
Figure 3
Turn-Off Time
tOFF
VCOM_ = 3V, V+ = 5V,
Figure 3
Break-Before-Make Time Delay
(MAX4566/MAX4567 only)
tBBM
VCOM_ = 3V, V+ = 5V,
Figure 4
+25°C
CL = 1.0nF, VNO = 2.5V,
RS = 0Ω, Figure 5
+25°C
7
Charge Injection
Q
30
10
90
ns
ns
ns
25
pC
Off-Isolation (Note 7)
VISO
RL = 50Ω, f = 10MHz,
VCOM_ = 1VRMS, Figure 6
+25°C
-81
dB
Channel-to-Channel Crosstalk
(Note 8)
VCT
RL = 50Ω, f = 10MHz,
VCOM_ = 1VRMS, Figure 6
+25°C
-86
dB
-3dB Bandwidth (Note 9)
BW
RL = 50W, Figure 6
+25°C
320
MHz
V+ = 5.5V, all VIN_ = 0V or V+
+25°C
C, E
POWER SUPPLY
V+ Supply Current
www.analog.com
I+
-1
-10
0.05
1
10
µA
Analog Devices │ 4
MAX4565/MAX4566/
MAX4567
Quad/Dual, Low-Voltage,
Bidirectional RF/Video Switches
Electrical Characteristics—Single +3V Supply
(V+ = +2.7V to +3.6V, V- = 0V, VINL = 0.8V, VINH = 2.4V, VGND_ = 0V, TA = TMIN to TMAX, unless otherwise noted. Typical values are
at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
TA
MIN
(Note 3)
+25°C
0
V+ = 2.7V, VCOM_ = 1V,
ICOM_ = 1mA
+25°C
TYP
(Note 2)
MAX
UNITS
V+
V
ANALOG SWITCH
Analog Signal Range
Signal-Path On-Resistance
LOGIC INPUT
IN_ Input Logic Threshold High
IN_ Input Logic Threshold Low
IN_ Input Current Logic High
or Low
VCOM_,
VNO_, VNC_
RON
VIN_H
VIN_L
IINH_, IINL_
150
C, E
350
450
(Note 3)
C, E
1.0
(Note 3)
C, E
0.8
VIN_ = 0.8V or 2.4V (Note 3)
C, E
-1
2.4
1.0
Ω
V
V
1
µA
SWITCH DYNAMIC CHARACTERISTICS (Note 3)
Turn-On Time
tON
VCOM_ = 1.5V, V+ = 2.7V,
Figure 3 (Note 3)
+25°C
Turn-Off Time
tOFF
VCOM_ = 1.5V, V+ = 2.7V,
Figure 3 (Note 3)
+25°C
Break-Before-Make Time Delay
(MAX4566/MAX4567 only)
tBBM
VCOM_ = 1.5V, V+ = 2.7V,
Figure 4 (Note 3)
270
C, E
600
40
C, E
+25°C
500
100
120
10
120
+25°C
-1
0.05
C, E
-10
ns
ns
ns
POWER SUPPLY
V+ Supply Current
Note
Note
Note
Note
Note
Note
Note
Note
Note
I+
V+ = 3.6V, all VIN_ = 0V or V+
1
10
µA
2:
3:
4:
5:
The algebraic convention is used in this data sheet; the most negative value is shown in the minimum column.
Guaranteed by design.
ΔRON = ΔRON(MAX) - ΔRON(MIN).
Resistance flatness is defined as the difference between the maximum and the minimum value of on-resistance as measured over the specified analog signal range.
6: Leakage parameters are 100% tested at the maximum rated hot temperature and guaranteed by correlation at +25°C.
7: Off isolation = 20log10 [VCOM / (VNC or VNO)], VCOM = output, VNC or VNO = input to off switch.
8: Between any two switches.
9: -3dB bandwidth is measured relative to 100kHz.
10: Leakage testing for single-supply operation is guaranteed by testing with dual supplies.
www.analog.com
Analog Devices │ 5
MAX4565/MAX4566/
MAX4567
Quad/Dual, Low-Voltage,
Bidirectional RF/Video Switches
Typical Operating Characteristics
(V+ = +5V, V- = -5V, TA = +25°C, GND = 0V, packages are surface mount, unless otherwise noted.)
RON (Ω)
100
V+ = 3.3V
V+ = 5V
V+ = 7.5V
100
TA = +125°C
55
TA = +85°C
45
V+ = 2.7V
TA = +25°C
35
TA = 0°C
25
3
4
10
5
ON-RESISTANCE vs. VCOM
AND TEMPERATURE
(SINGLE SUPPLY)
TA = +125°C
90
TA = +85°C
MAX4565 TOC04
110
TA = +25°C
70
TA = 0°C
50
TA = -55°C
0
100
0.0001
www.analog.com
±6
-75
-50
-25
5
10
-5
-4 -3
-2
-1 0 1
VCOM (V)
2
3
4
5
CHARGE INJECTION vs. VCOM
60
50
40
0 25 50 75
TEMPERATURE (°C)
DUAL
SUPPLIES
30
20
-10
100 125
ON/OFF TIME vs.
TEMPERATURE
110
100
tON
90
SINGLE
SUPPLY
-5
-4
-3
-1 0 1
VCOM (V)
2
3
4
5
1
0.1
I+
70
60
50
-2
POWER-SUPPLY CURRENT
vs. TEMPERATURE
tON
80
tOFF
30
tOFF
±4
±5
V+, V- (V)
9
0
40
tON
±3
8
OFF LEAKAGE
0.01
MAX4565 TOC07
150
±2
7
ON LEAKAGE
0.1
tON, tOFF (ns)
tON, tOFF (ns)
200
0
4 5 6
VCOM (V)
1
ON/OFF TIME vs.
SUPPLY VOLTAGE
50
3
0.001
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
VCOM (V)
250
2
10
30
10
1
ON/OFF-LEAKAGE CURRENT vs.
TEMPERATURE
10
LEAKAGE (nA)
RON (Ω)
130
0
MAX4565 TOC06
2
MAX4565 TOC09
-1 0 1
VCOM (V)
Qj (pC)
-3 -2
I+, I- (µA)
-4
MAX4565 TOC05
-5
15
V- = 0V
MAX4565 TOC08
10
TA = -40°C
V+ = 10V
V+ = 3.3V,
V- = -3.3V
V+ = 5V,
V- = -5V
MAX4565 TOC03
V+ = 2V
RON (Ω)
V+ = 2V,
V- = -2V
65
MAX4565TOC02
V+ = 1.2V,
V- = -1.2V
RON (Ω)
1000
MAX4565TOC01
1000
V+ = 2.7V,
V- = -2.7V
ON-RESISTANCE vs. VCOM
AND TEMPERATURE
(DUAL SUPPLIES)
ON-RESISTANCE vs. VCOM
(SINGLE SUPPLY)
ON-RESISTANCE vs. VCOM
(DUAL SUPPLIES)
tOFF
0.01
I-
0.001
0.0001
20
±8
10
-75
-50 -25
0 25
50 75 100 125
TEMPERATURE (°C)
0.00001
-75
-50 -25
0 25
50 75 100 125
TEMPERATURE (°C)
Analog Devices │ 6
MAX4565/MAX4566/
MAX4567
Quad/Dual, Low-Voltage,
Bidirectional RF/Video Switches
Typical Operating Characteristics (continued)
(V+ = +5V, V- = -5V, TA = +25°C, GND = 0V, packages are surface mount, unless otherwise noted.)
SWITCH LOSS (dB)
2.0
1.5
1.0
0.5
0
2
4
6
8
10
ADJACENT CHANNEL
CROSSTALK
-50
MAX4565 TOC12
1
10
-40
-50
-60
10
0
-10
-20
-30
ADJACENT
CHANNEL
CROSSTALK
(ON)
0.1
1
10
100
1000
ON LOSS
-20
20
OFF
ISOLATION
-70
-80
-90
0
40
30
PHASE (ON)
-30
-60
60
0
-20
OFF
ISOLATION
-70
-40
-60
-90
-100
80
20
ON PHASE
-50
-80
-40
-50
-60
100
40
-40
-80
CROSSTALK
1
10
100
1000
-100
FREQUENCY (MHz)
FREQUENCY (MHz)
MAX14565 TOC14
MAX4567
TOTAL HARMONIC DISTORTION
vs. FREQUENCY
100
TOTAL HARMONIC DISTORTION (%)
1000
MAX4567
FREQUENCY RESPONSE
-10
SWITCH LOSS (dB)
LOSS (dB)
-20
-30
-100
-110
-120
60
50
INSERTION LOSS (ON)
OPPOSITE
CHANNEL
CROSSTALK (ON)
100
-100
-120
FREQUENCY (MHz)
PHASE (DEGREES)
0
-10
-40
-60
-80
OPPOSITE
CHANNEL
CROSSTALK
V+ (V)
MAX4566
FREQUENCY RESPONSE
0
-20
OFF ISOLATION
-80
-90
-100
12
20
ON PHASE
-60
-70
-110
-120
100
80
60
40
ON PHASE (DEGREES)
0
120
ON LOSS
-10
-20
-30
-40
MAX4565toc13
2.5
MAX14565 TOC11
0
MAX4565TOC10
LOGIC-LEVEL THRESHOLD (V)
3.0
MAX4565
FREQUENCY RESPONSE
ON PHASE (DEGREES)
LOGIC-LEVEL THRESHOLD VOLTAGE vs.
V+ SUPPLY VOLTAGE
V+ = +5V
V- = -5V
SIGNAL = 5Vp-p
600Ω IN AND OUT
10
1
0.1
0.01
10
100
1k
10k
100k
FREQUENCY (Hz)
www.analog.com
Analog Devices │ 7
MAX4565/MAX4566/
MAX4567
Quad/Dual, Low-Voltage,
Bidirectional RF/Video Switches
Pin Description
PIN
NAME
FUNCTION*
MAX4565
MAX4566
MAX4567
1, 10, 11,
20
1, 16
1, 9
IN_
3, 6, 8, 13,
15, 18
3, 7, 10, 14
4, 6, 12, 14
GND_
16
12
7, 15
V+
Positive Supply-Voltage Input (analog and digital)
5
5
3, 11
V-
Negative Supply-Voltage Input. Connect to ground plane for single-supply
operation.
4, 7, 14, 17
4, 13
2, 16
NO_
Analog Switch Normally Open** Terminals
—
6, 11
8, 10
NC_
Analog Switch Normally Closed** Terminals
2, 9, 12, 19
2, 8, 9, 15
5, 13
COM_
Digital Control Input
RF and Logic Ground. Grounds are not internally connected to each other,
and should all be connected to a ground plane (see Grounding section).
Analog Switch Common** Terminals
* All pins have ESD diodes to V- and V+.
** NO_ (or NC_) and COM_ pins are identical and interchangeable. Either may be considered as an input or output; signals pass
equally well in either direction.
Theory of Operation
The MAX4565/MAX4566/MAX4567 are high-frequency
“T” switches. Each “T” switch consists of two series
CMOS switches, with a third N-channel switch at the junction that shunts capacitively-coupled signals to ground
when the series switches are off. This produces superior
high-frequency signal isolation when the switch is turned
off.
Logic-Level Translators
The MAX4565/MAX4566/MAX4567 are constructed as
high-frequency “T” switches, as shown in Figure 1. The
logic-level input, IN_, is translated by amplifier A1 into a V+
to V- logic signal that drives amplifier A2. (Amplifier A2 is an
inverter for normally closed switches.) Amplifier A2 drives
the gates of N-channel MOSFETs N1 and N2 from V+ to
V-, turning them fully on or off. The same signal drives
inverter A3 (which drives the P-channel MOSFETs P1 and
P2) from V+ to V-, turning them fully on or off, and drives
the N-channel MOSFET N3 off and on.
The logic-level threshold is determined by V+ and GND_.
The voltage on GND_ is usually at ground potential, but
it may be set to any voltage between (V+ - 2V) and V-.
When the voltage between V+ and GND_ is less than
2V, the level translators become very slow and unreliable.
Since individual switches in each package have individual
GND_ pins, they may be set to different voltages. Normally,
however, they should all be connected to the ground plane.
www.analog.com
NORMALLY OPEN SWITCH CONSTRUCTION
COM_
D
IN_
COM_ - NO_
0
1
OFF
ON
N1
D
S
S
P1
V+
IN_
A1
A2
D
S
N2
P2
S
NO_
D
D
A3
N3
S
GND_
V+
VA2
(NC)
ESD DIODES
ON GND_, IN_,
COM_, NO_, AND NC_
V-
Figure 1. T-Switch Construction
Switch On Condition
When the switch is on, MOSFETs N1, N2, P1, and
P2 are on and MOSFET N3 is off. The signal path
is COM_ to NO_, and because both N-channel and
P-channel MOSFETs act as pure resistances, it is symmetrical (i.e., signals may pass in either direction). The
off MOSFET, N3, has no DC conduction, but has a small
Analog Devices │ 8
MAX4565/MAX4566/
MAX4567
Quad/Dual, Low-Voltage,
Bidirectional RF/Video Switches
amount of capacitance to GND_. The four on MOSFETs
also have capacitance to ground that, together with the
series resistance, forms a lowpass filter. All of these
capacitances are distributed evenly along the series
resistance, so they act as a transmission line rather than
a simple R-C filter. This helps to explain the exceptional
350MHz bandwidth when the switches are on.
leakages vary as the signal varies. The difference in the
two diode leakages from the signal path to the V+ and Vpins constitutes the analog signal-path leakage current.
All analog leakage current flows to the supply terminals,
not to the other switch terminal. This explains how both
sides of a given switch can show leakage currents of
either the same or opposite polarity.
Typical attenuation in 50Ω systems is -2.5dB and is reasonably flat up to 300MHz. Higher-impedance circuits
show even lower attenuation (and vice versa), but slightly
lower bandwidth due to the increased effect of the internal and external capacitance and the switch’s internal
resistance.
There is no connection between the analog signal
paths and GND. The analog signal paths consist of an
N-channel and P-channel MOSFET with their sources
and drains paralleled and their gates driven out of phase
with V+ and V- by the logic-level translators.
The MAX4565/MAX4566/MAX4567 are optimized for ±5V
operation. Using lower supply voltages or a single supply
increases switching time, increases on-resistance (and
therefore on-state attenuation), and increases nonlinearity.
Switch Off Condition
When the switch is off, MOSFETs N1, N2, P1, and P2 are
off and MOSFET N3 is on. The signal path is through the
off-capacitances of the series MOSFETs, but it is shunted
to ground by N3. This forms a highpass filter whose exact
characteristics are dependent on the source and load
impedances. In 50Ω systems, and below 10MHz, the
attenuation can exceed 80dB. This value decreases with
increasing frequency and increasing circuit impedances.
External capacitance and board layout have a major role
in determining overall performance.
Applications Information
Power-Supply Considerations
Overview
The MAX4565/MAX4566/MAX4567 construction is typical
of most CMOS analog switches. It has three supply pins:
V+, V-, and GND. V+ and V- are used to drive the internal
CMOS switches and set the limits of the analog voltage
on any switch. Reverse ESD protection diodes are internally connected between each analog signal pin and both
V+ and V-. If the voltage on any pin exceeds V+ or V-,
one of these diodes will conduct. During normal operation
these reverse-biased ESD diodes leak, forming the only
current drawn from V-.
Virtually all the analog leakage current is through the
ESD diodes. Although the ESD diodes on a given signal pin are identical, and therefore fairly well balanced,
they are reverse biased differently. Each is biased by
either V+ or V- and the analog signal. This means their
www.analog.com
V+ and GND power the internal logic and logic-level translators, and set the input logic thresholds. The logic-level
translators convert the logic levels to switched V+ and
V- signals to drive the gates of the analog switches. This
drive signal is the only connection between the logic supplies and the analog supplies. All pins have ESD protection to V+ and to V-.
Increasing V- has no effect on the logic-level thresholds,
but it does increase the drive to the P-channel switches,
reducing their on-resistance. V- also sets the negative
limit of the analog signal voltage.
The logic-level thresholds are CMOS and TTL compatible
when V+ is +5V. As V+ is raised, the threshold increases
slightly; when V+ reaches +12V, the level threshold is
about 3.1V, which is above the TTL output high-level
minimum of 2.8V, but still compatible with CMOS outputs.
Bipolar-Supply Operation
The MAX4565/MAX4566/MAX4567 operate with bipolar
supplies between ±2.7V and ±6V. The V+ and V- supplies
need not be symmetrical, but their sum cannot exceed the
absolute maximum rating of 13.0V. Do not connect the
MAX4565/MAX4566/MAX4567 V+ pin to +3V and connect the logic-level input pins to TTL logic-level signals. TTL logic-level outputs can exceed the absolute
maximum ratings, causing damage to the part and/or
external circuits.
CAUTION:
The absolute maximum V+ to V- differential
voltage is 13.0V. Typical “±6-Volt” or “12-Volt”
supplies with ±10% tolerances can be as high
as 13.2V. This voltage can damage the
MAX4565/MAX4566/MAX4567. Even ±5% tolerance supplies may have overshoot or noise
spikes that exceed 13.0V.
Analog Devices │ 9
MAX4565/MAX4566/
MAX4567
Single-Supply Operation
The MAX4565/MAX4566/MAX4567 operate from a single
supply between +2.7V and +12V when V- is connected
to GND. All of the bipolar precautions must be observed.
Note, however, that these parts are optimized for ±5V
operation, and most AC and DC characteristics are
degraded significantly when departing from ±5V. As the
overall supply voltage (V+ to V-) is lowered, switching
speed, on-resistance, off isolation, and distortion are
degraded. (See Typical Operating Characteristics.)
Single-supply operation also limits signal levels and interferes with grounded signals. When V- = 0V, AC signals
are limited to -0.3V. Voltages below -0.3V can be clipped
by the internal ESD-protection diodes, and the parts can
be damaged if excessive current flows.
Power Off
When power to the MAX4565/MAX4566/MAX4567 is
off (i.e., V+ = 0V and V- = 0V), the Absolute Maximum
Ratings still apply. This means that neither logic-level
inputs on IN_ nor signals on COM_, NO_, or NC_ can
exceed ±0.3V. Voltages beyond ±0.3V cause the internal
ESD-protection diodes to conduct, and the parts can be
damaged if excessive current flows.
Grounding
DC Ground Considerations
Satisfactory high-frequency operation requires that careful
consideration be given to grounding. For most applications, a ground plane is strongly recommended, and
all GND_ pins should be connected to it with solid
copper. While the V+ and V- power-supply pins are common to all switches in a given package, each switch has
separate ground pins that are not internally connected to
each other. This contributes to the overall high-frequency
performance and provides added flexibility in some applications, but it can cause problems if it is overlooked. All
the GND_ pins have ESD diodes to V+ and V-.
In systems that have separate digital and analog (signal)
grounds, connect these switch GND_ pins to analog
ground. Preserving a good signal ground is much more
important than preserving a digital ground.
The logic-level inputs, IN_, have voltage thresholds
determined by V+ and GND_. (V- does not influence the
logic-level threshold.) With +5V and 0V applied to V+ and
GND_, the threshold is about 1.6V, ensuring compatibility
with TTL- and CMOS-logic drivers.
The various GND_ pins can be connected to separate
voltage potentials if any or all of the logic-level inputs is
www.analog.com
Quad/Dual, Low-Voltage,
Bidirectional RF/Video Switches
not a normal logic signal. (The GND_ voltages cannot
exceed (V+ - 2V) or V-.) Elevating GND_ reduces off isolation. For example, using the MAX4565, if GND2–GND6
are connected to 0V and GND1 is connected to V-, then
switches 2, 3, and 4 would be TTL/CMOS compatible, but
switch 1 (IN1) could be driven with the rail-to-rail output
of an op amp operating from V+ and V-. Note, however,
that IN_ can be driven more negative than GND_, as far
as V-. GND_ does not have to be removed from 0V when
IN_ is driven from bipolar sources, but the voltage on IN_
should never exceed V-. GND_ should be separated from
0V only if the logic-level threshold has to be changed.
Any GND_ pin not connected to 0V should be bypassed
to the ground plane with a surface-mount 10nF capacitor
to maintain good RF grounding. DC current in the IN_ and
GND_ pins is less than 1nA, but increases with switching
frequency.
On the MAX4565 only, two extra ground pins—GND5 and
GND6—are provided to improve isolation and crosstalk.
They are not connected to the logic-level circuit. These
pins should always be connected to the ground plane with
solid copper.
AC Ground and Bypassing
A ground plane is mandatory for satisfactory highfrequency operation. (Prototyping using hand wiring or
wire-wrap boards is strongly discouraged.) Connect all 0V
GND_ pins to the ground plane with solid copper. (The
GND_ pins extend the high-frequency ground through the
package wire-frame, into the silicon itself, thus improving
isolation.) The ground plane should be solid metal underneath the device, without interruptions. There should be
no traces under the device itself. For DIP packages, this
applies to both sides of a two-sided board. Failure to
observe this will have a minimal effect on the “on” characteristics of the switch at high frequencies, but it will
degrade the off isolation and crosstalk.
Bypass all V+ and V- pins to the ground plane with surface-mount 10nF capacitors. For DIP packages, mount
the capacitors as close as possible to the pins on the
same side of the board as the device. Do not use
feedthroughs or vias for bypass capacitors.
For surface-mount packages, bypass capacitors should
be mounted on the opposite side of the board from the
device. In this case, use short feedthroughs or vias,
directly under the V+ and V- pins. Any GND_ pin not
connected to 0V should be similarly bypassed. If V is 0V,
connect it directly to the ground plane with solid copper.
Keep all leads short.
Analog Devices │ 10
MAX4565/MAX4566/
MAX4567
Quad/Dual, Low-Voltage,
Bidirectional RF/Video Switches
The MAX4567 has two V+ and two V- pins. Make DC connections to only one of each to minimize crosstalk. Do not
route DC current into one of the V+ or V- pins and out the
other V+ or V- pin to other devices. The second set of V+
and V- pins is for AC bypassing only.
For dual-supply operation, the MAX4567 should have four
10nF bypass capacitors connected to each V+ and V- pin
as close to the package as possible. For single-supply
operation, the MAX4567 should have two 10nF bypass
capacitors connected (one to each V+ pin) as close to the
package as possible.
On the MAX4565, GND5 and GND6 should always
be connected to the ground plane with solid copper to
improve isolation and crosstalk.
10nF
GND6
Board Layout
IC sockets degrade high-frequency performance and
should not be used if signal bandwidth exceeds 5MHz.
Surface-mount parts, having shorter internal lead frames,
provide the best high-frequency performance. Keep all
bypass capacitors close to the device, and separate all
signal leads with ground planes. Such grounds tend to be
wedge-shaped as they get closer to the device. Use vias
to connect the ground planes on each side of the board,
and place the vias in the apex of the wedge-shaped
grounds that separate signal leads. Logic-level signal
lead placement is not critical.
1
1
MAX4565
2
COM1
4
COM2
OUT
2
3
3
NO1
GND1
50/75Ω
OUT/IN
Keep all signal leads as short as possible. Separate all
signal leads from each other and other traces with the
ground plane on both sides of the board. Where possible,
use coaxial cable instead of printed circuit board traces.
V+
V+
GND5
Signal Routing
MAX4565
1
4
2
NO2
GND2
3
COM3
COM4
IN3
IN4
50/75Ω
OUT/IN
ADDRESS
DECODING
NO4
GND4
IN2
MAX4565
4
NO3
GND3
IN1
OUT
IN1
6
IN3
V-
2
3
7
IN4
OUT
1
5
IN2
8
MAX4565
TO
ADDITIONAL
MUXES
4
10nF
V-
Figure 2. 4-Channel Multiplexer
www.analog.com
Analog Devices │ 11
MAX4565/MAX4566/
MAX4567
Quad/Dual, Low-Voltage,
Bidirectional RF/Video Switches
Multiplexer
With its excellent off isolation, the MAX4565 is ideal for
use in high-frequency video multiplexers. Figure 2 shows
such an application for switching any one of four video
inputs to a single output. The same circuit may be used as
a demultiplexer by simply reversing the signal direction.
Stray capacitance of traces and the output capacitance
of switches placed in parallel reduces bandwidth, so the
outputs of no more than four individual switches should
be placed in parallel to maintain a high bandwidth. If more
than four mux channels are needed, the 4-channel circuit
should be duplicated and cascaded.
Test Circuits/Timing Diagrams
10nF +5V
V+
NO_OR NC_
VIN_
3V
V+
50%
MAX4565
MAX4566
MAX4567
VIN_
IN_
GND_
COM_
V-
50Ω
50%
0V
90%
VOUT
RL = 300Ω
VOUT
90%
0V
tOFF
tON
10nF
-5V
REPEAT TEST FOR EACH SWITCH.
ALL GND_ PINS ARE CONNECTED TO GROUND PLANE (OV).
V- IS CONNECTED TO GND (OV) FOR SINGLE-SUPPLY OPERATION.
Figure 3. Switching Time
www.analog.com
Analog Devices │ 12
MAX4565/MAX4566/
MAX4567
Quad/Dual, Low-Voltage,
Bidirectional RF/Video Switches
Test Circuits/Timing Diagrams (continued)
10nF +5V
V+
* COM3
MAX4566
3V
* COM2
* N02
VIN_
IN_
* NC3
GND_
V-
50Ω
10nF
VOUT
RL = 300Ω
VIN_
V+
tR < 20ns
tF < 20ns
50%
0V
-5V
80%
* REPEAT TEST FOR OTHER PAIR OF SWITCHES.
VOUT
10nF +5V
0V
V+
**NC_
tBBM
1V
ALL GND_ PINS ARE CONNECTED TO GROUND PLANE (OV).
V+ IS CONNECTED TO GND (OV) FOR SINGLE-SUPPLY OPERATION.
**NO_
MAX4567
VIN_
IN_
GND_
**COM_
V-
50Ω
10nF
VOUT
RL = 300Ω
-5V
** REPEAT TEST FOR OTHER SWITCH.
Figure 4. Break-Before-Make Interval (MAX4566/MAX4567 only)
www.analog.com
Analog Devices │ 13
MAX4565/MAX4566/
MAX4567
Quad/Dual, Low-Voltage,
Bidirectional RF/Video Switches
Test Circuits/Timing Diagrams (continued)
10nF +5V
V+
NO_ OR NC_
VIN_
VNO = 0V
0V
MAX4565
MAX4566
MAX4567
VIN_
IN_
COM_
GND_
V-
V+
∆VOUT
VOUT
VOUT
CL = 1000pF
50Ω
10nF
∆VOUT IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER
ERROR Q WHEN THE CHANNEL TURNS OFF.
-5V
Q = ∆VOUT x CL
V- IS CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION.
Figure 5. Charge Injection
+5V 10nF
0V OR V+
V+
IN_
MAX4565
MAX4566
MAX4567
GND_
NO_
50Ω
VIN
NETWORK
ANALYZER
OFF ISOLATION = 20log
50Ω
ON LOSS = 20log
CROSSTALK = 20log
COM_
V-
VOUT
MEAS
50Ω
REF
VOUT
VIN
VOUT
VIN
VOUT
VIN
50Ω
10nF -5V
MEASUREMENTS ARE STANDARDIZED AGAINST SHORT AT IC TERMINALS.
OFF ISOLATION IS MEASURED BETWEEN COM_ AND "OFF" NO_ OR NC_ TERMINAL ON EACH SWITCH.
ON LOSS IS MEASURED BETWEEN COM_ AND "ON" NO_ OR NC_TERMINAL ON EACH SWITCH.
CROSSTALK IS MEASURED FROM ONE CHANNEL TO ALL OTHER CHANNELS.
SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED.
V- IS CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION.
Figure 6. On Loss, Off Isolation, and Crosstalk
www.analog.com
Analog Devices │ 14
MAX4565/MAX4566/
MAX4567
Quad/Dual, Low-Voltage,
Bidirectional RF/Video Switches
Test Circuits/Timing
Diagrams (continued)
Chip Topographies
MAX4565
10nF +5V
0V OR V+
COM1 IN1 IN2 COM2
V+
IN_
N.C.
NO_
MAX4565 NC_
MAX4566
MAX4567
NO2
NO1
1MHz
CAPACITANCE
ANALYZER
COM_
GND_
GND2
GND1
V-
V+
GND6
VGND5
NO3
NO4
GND3
GND4
10nF
0.082"
(2.08mm)
N.C.
-5V
ALL GND_ PINS ARE CONNECTED TO GROUND PLANE (0V).
COM4 IN4 IN3 COM3
0.072"
(1.83mm)
Figure 7. NO_, NC_, COM_ Capacitance
MAX4566
MAX4567
COM1 IN1 IN2 COM2
N.C.
NO1
V+
0.082"
(2.08mm)
N.C.
N.C.
COM2
N.C.
N.C.
NC3
COM1
N.C.
GND4
N.C.
N.C.
GND4 COM4 COM3 GND3
0.072"
(1.83mm)
N.C.
N.C.
VNC4
GND2
GND1
NO2
NO1
V+
V-
GND2
GND1
IN1 NO2
0.082"
(2.08mm)
N.C.
N.C.
GND3
V-
V+
NC1 IN2 NC2
0.072"
(1.83mm)
TRANSISTOR COUNT: 257
SUBSTRATE INTERNALLY CONNECTED TO V+
www.analog.com
Analog Devices │ 15
MAX4565/MAX4566/
MAX4567
Quad/Dual, Low-Voltage,
Bidirectional RF/Video Switches
Ordering Information (continued)
PART
TEMP. RANGE
PIN-PACKAGE
PART
TEMP. RANGE
PIN-PACKAGE
MAX4565CAP
0°C to +70°C
20 SSOP
MAX4567CPE
0°C to +70°C
16 Plastic DIP
MAX4565C/D
0°C to +70°C
Dice*
MAX4567CSE
0°C to +70°C
16 Narrow SO
MAX4565EPP
-40°C to +85°C
20 Plastic DIP
MAX4567CEE
0°C to +70°C
16 QSOP
MAX4565EWP
-40°C to +85°C
20 Wide SO
MAX4567C/D
0°C to +70°C
Dice*
MAX4565EAP
-40°C to +85°C
20 SSOP
MAX4567EPE
-40°C to +85°C
16 Plastic DIP
MAX4566CPE
0°C to +70°C
16 Plastic DIP
MAX4567ESE
-40°C to +85°C
16 Narrow SO
MAX4566CSE
0°C to +70°C
16 Narrow SO
MAX4567EEE
-40°C to +85°C
16 QSOP
MAX4566CEE
0°C to +70°C
16 QSOP
MAX4565CWP+
0°C to +70°C
20 Wide SO
MAX4566C/D
0°C to +70°C
Dice*
MAX4565CWP+T
0°C to +70°C
20 Wide SO
MAX4566EPE
-40°C to +85°C
16 Plastic DIP
MAX4565EWP+
-40°C to +85°C
20 Wide SO
MAX4566ESE
-40°C to +85°C
16 Narrow SO
MAX4565EWP+T
-40°C to +85°C
20 Wide SO
MAX4566EEE
-40°C to +85°C
16 QSOP
MAX4565ESE+T
-40°C to +85°C
16 Narrow SO
*Contact factory for dice specifications.
Package Information
PACKAGE
TYPE
PACKAGE
CODE
OUTLINE
NO.
LAND PATTERN
NO.
20 SSOP
A20+5
21-0056
90-0094
20 SOIC (W)
W20+2
21-0042
90-0108
20 PDIP
P20+4
21-0043
NOT AVAILABLE
16 SOIC (N)
S16+1
21-0041
90-0097
16 QSOP
E16+1
21-0055
90-0167
www.analog.com
Analog Devices │ 16
MAX4565/MAX4566/
MAX4567
Quad/Dual, Low-Voltage,
Bidirectional RF/Video Switches
Revision History
REVISION
NUMBER
REVISION
DATE
PAGES
CHANGED
0
6/97
Initial Release.
1
2/21
Added new packages to Ordering Information, added Package Information and
Revision History.
DESCRIPTION
—
1, 16
Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is
assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that
may result from its use. Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are
the property of their respective owners.
w w w . a n a l o g . c o m
Analog Devices │ 17
工商网监
湘ICP备2023018690号
