Maxim MAX4730 Low-voltage 3.5ohm, spdt, cmos analog switch Datasheet

19-3284; Rev 0; 5/04
Low-Voltage 3.5Ω, SPDT,
CMOS Analog Switches
Features
The MAX4729/MAX4730 single-pole/double-throw
(SPDT) switches operate from a single supply ranging
from +1.8V to +5.5V. These switches provide low 3.5Ω
on-resistance (RON), as well as 0.45Ω RON flatness with
a +2.7V supply. These devices typically consume only
1nA of supply current, making them ideal for use in lowpower, portable applications. The MAX4729/MAX4730
feature low-leakage currents over the extended temperature range, TTL/CMOS-compatible digital logic, and
excellent AC characteristics.
♦ Low 3.5Ω RON (+2.7V Supply)
♦ 0.45Ω RON Flatness (+2.7V Supply)
♦ 0.05Ω RON Match Between Channels (+2.7V
Supply)
♦ Tiny SC70 and µDFN Packages
♦ -3dB Bandwidth: 300MHz
♦ Low On-Capacitance: 19.5pF
♦ 0.036% Total Harmonic Distortion
The MAX4729/MAX4730 are available in small 6-pin
SC70 and 6-pin µDFN packages. The MAX4729/
MAX4730 are offered in three pinout configurations to
ease design. The MAX4729/MAX4730 are specified
over the extended -40°C to +85°C temperature range.
♦ Low Supply Current: 1nA
♦ +1.8V to +5.5V Single-Supply Operation
Applications
Ordering Information
Battery-Operated Equipment
PART
TEMP RANGE
MAX4729EXT-T
-40ºC to +85ºC
PINPACKAGE
6 SC70-6
MAX4729ELT-T*
-40ºC to +85ºC
6 µDFN-6
—
MAX4730EXT-T
-40ºC to +85ºC
6 SC70-6
ABV
MAX4730ELT-T*
-40ºC to +85ºC
6 µDFN-6
—
Audio and Video-Signal Routing
Low-Voltage Data-Acquisition Systems
Sample-and-Hold Circuits
Communications Circuits
Relay Replacement
TOP
MARK
ABU
*Future product—contact factory for availability.
Pin Configurations/Functional Diagrams/Truth Table
TOP VIEW
MAX4729
MAX4729
MAX4730
IN 1
6
NO
NO 1
5
N.C.
NO 1
6
IN
V+ 2
5
COM
V+ 2
5
COM
GND 2
5
V+
GND 3
4
NC
IN
3
4
GND
NC 3
4
COM
µDFN
SC70
SC70
µDFN
MAX4729/
MAX4730
IN
NC
NO
0
1
ON
OFF
OFF
ON
SWITCHES SHOWN FOR LOGIC 0 INPUT.
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
MAX4729/MAX4730
General Description
MAX4729/MAX4730
Low-Voltage 3.5Ω, SPDT,
CMOS Analog Switches
ABSOLUTE MAXIMUM RATINGS
(All voltages referenced to ground)
V+, IN .......................................................................-0.3V to +6V
COM, NO, NC (Note 1)..................................-0.3V to (V+ +0.3V)
Continuous Current (IN, V+, GND) ...................................±30mA
Continuous Current (COM, NO, NC) ................................±80mA
Peak Current COM, NO, NC
(Pulsed at 1ms, 10% Duty Cycle)................................±150mA
Continuous Power Dissipation (TA = +70°C)
6-Pin µDFN (derate 2.1mW/°C above +70°C) ..............168mW
6-Pin SC70 (derate 3.1mW/°C above +70°C) ...............245mW
Operating Temperature Range ...........................-40°C to +85°C
Maximum Junction Temperature .....................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Note 1: Signals on NO, NC, or COM exceeding V+ or GND are clamped by internal diodes. Signals on IN exceeding GND are
clamped by an internal diode. 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
(V+ = +2.7V to +3.6V, VIH = +2.0V, VIL = +0.4V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
TA
MIN
TYP
MAX
UNITS
V+
V
ANALOG SWITCH
Analog Signal Range
On-Resistance (Note 6)
On-Resistance Match Between
Channels (Notes 3, 6)
On-Resistance Flatness (Note 4)
VCOM,
VNO, VNC
RON
∆RON
RFLAT(ON)
0
V+ = 2.7V, ICOM = 10mA,
VNO or VNC = 0V to V+
+25°C
V+ = 2.7V, ICOM = 10mA,
VNO or VNC = 0.7V, 1.2V,
2V (MAX4729)
+25°C
V+ = 2.7V, ICOM = 10mA,
VNO or VNC = 0.7V, 1.2V,
2V (MAX4730)
V+ = 2.7V, ICOM = 10mA,
VNO or VNC = 0.7V, 1.2V,
2V (MAX4729)
3.5
TMIN to TMAX
0.05
TMIN to TMAX
0.2
TMIN to TMAX
Ω
0.34
0.37
+25°C
0.8
TMIN to TMAX
TMIN to TMAX
Ω
0.15
0.2
+25°C
V+ = 2.7V, ICOM = 10mA,
VNO or VNC = 0.7V, 1.2V,
2V (MAX4730)
5.5
5.7
1.5
2.2
+25°C
0.45
Ω
0.95
1.3
NO, NC Off-Leakage Current
INO (OFF),
INC (OFF)
V+ = 3.3V, VCOM = 1V, 3V,
VNO or VNC = 3V, 1V
+25°C
-2
TMIN to TMAX
-3
ICOM (ON)
V+ = 3.3V, VCOM = 1V or
+25°C
3V, VNO or VNC = 1V, 3V, or
TMIN to TMAX
float
-3
COM On-Leakage Current
2.0
+0.01
+2
+3
+0.01
nA
+3
nA
-4
+4
DIGITAL INPUTS
Input Logic High
VIH
TMIN to TMAX
Input Logic Low
VIL
TMIN to TMAX
Input Leakage Current
IIN
2
VIN = 0V or 3.6V
TMIN to TMAX
-1
V
+0.005
_______________________________________________________________________________________
0.4
V
+1
µA
Low-Voltage 3.5Ω, SPDT,
CMOS Analog Switches
(V+ = +2.7V to +3.6V, VIH = +2.0V, VIL = +0.4V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
TA
Turn-On Time (Note 5)
tON
VNO, VNC = 2V, RL = 300Ω,
CL = 35pF, Figure 1
TMIN to TMAX
Turn-Off Time (Note 5)
tOFF
VNO, VNC = 2V, RL = 300Ω,
CL = 35pF, Figure 1
TMIN to TMAX
MIN
TYP
MAX
UNITS
DYNAMIC
VNO, VNC = 2V, RL = 300Ω,
CL = 35pF, Figure 1
Break-Before-Make (Note 5)
Charge Injection
Q
+25°C
18
+25°C
10
26
26
+25°C
TMIN to TMAX
45
45
5
ns
ns
1
VGEN = 0V, RGEN = 0, CL = 1.0nF, Figure 3
ns
3
pC
NO, NC Off-Capacitance
CNO(OFF),
CNC(OFF)
f = 1MHz, Figure 4
6.5
pF
Switch On-Capacitance
CON
f = 1MHz, Figure 4
19.5
pF
Off-Isolation (Note 7)
VISO
VNO = VNC = 1VRMS, RL =
50Ω, CL = 5pF, Figure 2
f = 1MHz
-67
f = 10MHz
-45
On-Channel Bandwidth -3dB
BW
Signal = 0dBm, 50Ω in and out, Figure 2
300
Crosstalk (Note 8)
VCT
NO or NC = 1VRMS, CL =
5pF, RL = 50Ω, Figure 2
Total Harmonic Distortion
THD
RL = 600Ω, VNC or VNO =
2VP-P, f = 20Hz to 20kHz
f = 1MHz
-67
f = 10MHz
-52
+25°C
dB
MHz
dB
0.035
%
POWER SUPPLY
Power-Supply Range
V+
Positive Supply Current
I+
1.8
V+ = 5.5V, VIN = 0V or 5.5V
+25°C
TMIN to TMAX
5.5
0.001
1
V
µA
Note 2: SC70 and µDFN parts are 100% tested at TA = +25°C. Limits across the full-temperature range are guaranteed by design
and correlation.
Note 3: ∆RON = RON(MAX) - RON(MIN).
Note 4: RON flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the
specified analog signal ranges.
Note 5: Guaranteed by design.
Note 6: µDFN is guaranteed by design.
Note 7: Off-Isolation = 20log10 (VO / VI), where VO is VCOM and VI is either VNC or VNO from the network analyzer.
Note 8: Crosstalk is measured between the two switches.
_______________________________________________________________________________________
3
MAX4729/MAX4730
ELECTRICAL CHARACTERISTICS (continued)
Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
TA = +85°C
35
TA = +25°C
V+ = 2.5V
15
25
20
RON (Ω)
RON (Ω)
TA = -40°C
V+ = 3V
V+ = 4.5V V+ = 5V
10
5
3
2
15
10
TA = +25°C
TA = -40°C
1
5
0
0
1
2
3
4
5
0
0.3
0.6
0.9
1.2
1.5
VCOM (V)
VCOM (V)
ON-RESISTANCE vs. VCOM
(V+ = +5V)
ON/OFF-LEAKAGE CURRENT
vs. TEMPERATURE
TA = +85°C
2.0
1.5
TA = +25°C
1.0
TA = -40°C
0
0.5
1.0
1.5
2.0
2.5
3.0
VCOM (V)
500
ON, VCC = 5V
400
1.8
CHARGE INJECTION vs. VCOM
60
50
CHARGE INJECTION (pC)
2.5
MAX4729 toc04
3.0
ON/OFF-LEAKAGE CURRENT (pA)
0
OFF, VCC = 5V
300
ON, VCC = 3V
200
OFF, VCC = 3V
100
MAX4729 toc06
0
MAX4729 toc05
RON (Ω)
20
RON (Ω)
TA = +85°C
4
30
MAX4729 toc03
V+ = 1.8V
5
MAX4729 toc02
40
MAX4729 toc01
30
25
ON-RESISTANCE vs. VCOM
(V+ = +3V)
ON-RESISTANCE vs. VCOM
(V+ = +1.8V)
ON-RESISTANCE vs. VCOM
40
5V
30
20
0
10
-100
0
3V
1.8V
1
2
3
4
-40
5
-15
10
35
60
TEMPERATURE (°C)
SUPPLY CURRENT vs. TEMPERATURE
SUPPLY CURRENT
vs. LOGIC INPUT VOLTAGE
800
1,000,000
100,000
SUPPLY CURRENT (nA)
600
V+ = 3V
400
3
4
5
30
25
1000
100
V+ = 5V
V+ = 3V
10
tON
20
15
tOFF
1
10
0.1
200
5
0.01
0
-40
-15
10
35
TEMPERATURE (°C)
4
2
tON/tOFF vs. SUPPLY VOLTAGE
10,000
V+ = 5V
1
35
MAX4729 toc08
MAX4729 toc07
1000
0
85
VCOM (V)
COM VOLTAGE (V)
tON/tOFF (ns)
0
MAX4729 toc09
0
SUPPLY CURRENT (pA)
MAX4729/MAX4730
Low-Voltage 3.5Ω, SPDT,
CMOS Analog Switches
60
85
0
0.001
0
2
4
LOGIC INPUT VOLTAGE (V)
6
1.5
2.5
3.5
4.5
SUPPLY VOLTAGE (V)
_______________________________________________________________________________________
5.5
Low-Voltage 3.5Ω, SPDT,
CMOS Analog Switches
tON/tOFF vs. TEMPERATURE
OFF-ISOLATION
tOFF
10
5
V+ = 5V
V+ = 5V
-40
-50
-15
10
35
60
-70
-70
-80
50Ω IN AND OUT
V+ = 3V
50Ω IN AND OUT
-90
0.1
85
V+ = 5V
1
10
100
1000
0.1
1
10
100
TEMPERATURE (°C)
FREQUENCY (MHz)
FREQUENCY (MHz)
ON-LOSS BANDWIDTH
TOTAL HARMONIC DISTORTION
vs. FREQUENCY
TOTAL HARMONIC DISTORTION
vs. FREQUENCY
0.06
V+ = 5V
OUTPUT IMPEDANCE = 600Ω
f = 20Hz to 20kHz
V+ = 3V, VGEN = 3VP-P
0.05
1000
0.06
MAX4729 toc14
V+ = 3V
MAX4729 toc13
0
-1
-50
-60
-90
-40
-40
-60
-80
0
-30
OUTPUT IMPEDANCE = 600Ω
MAX4730
V+ = 3V, VGEN = 3VP-P
0.05
MAX4729 toc15
V+ = 5V
V+ = 3V
-20
RESPONSE (dB)
15
-10
V+ = 3V
-30
MAX4729 toc12
-20
RESPONSE (dB)
tON/tOFF (ns)
-10
tON
20
0
MAX4729 toc11
V+ = 3V
25
CROSSTALK
0
MAX4729 toc10
30
0.04
-3
-4
0.03
V+ = 5V, VGEN = 5VP-P
0.02
-5
-6
0.04
V+ = 3V, VGEN = 2VP-P
THD (%)
THD (%)
RESPONSE (dB)
-2
V+ = 3V, VGEN = 2VP-P
0.03
0.02
V+ = 5V, VGEN = 3VP-P
V+ = 5V, VGEN = 5VP-P
0.01
0.01
0
0
V+ = 5V, VGEN = 3VP-P
50Ω IN AND OUT
-7
0.01
0.1
1
10
100
1000
0.01
FREQUENCY (MHz)
0.1
1
10
100
0.01
FREQUENCY (kHz)
0.1
1
10
100
FREQUENCY (kHz)
Pin Description
PIN
MAX4729
MAX4730
SC70
µDFN
SC70/µDFN
1
3
6
2
2
3
4
4
6
NAME
FUNCTION
IN
Logic-Control Input
5
V+
Positive Supply Voltage
2
GND
3
NC
5
5
4
COM
6
1
1
NO
Ground
Analog Switch Normally Closed Terminal
Analog Switch Common Terminal
Analog Switch Normally Open Terminal
_______________________________________________________________________________________
5
MAX4729/MAX4730
Typical Operating Characteristics (continued)
(TA = +25°C, unless otherwise noted.)
MAX4729/MAX4730
Low-Voltage 3.5Ω, SPDT,
CMOS Analog Switches
Detailed Description
The MAX4729/MAX4730 single-pole/double-throw
(SPDT) switches operate from a single supply ranging
from +1.8V to +5.5V. These switches provide low 3.5Ω
on-resistance (RON), as well as 0.45Ω RON flatness with
a 2.7V supply. These devices typically consume only
1nA of supply current, making them suitable for use in
low-power, portable applications. The MAX4729/
MAX4730 feature low-leakage currents over the entire
temperature range, TTL/CMOS-compatible digital logic,
and excellent AC characteristics.
Applications Information
supply, IN can be driven low to GND and high to +5.5V,
allowing for mixing of logic levels in a system. With a 2.7V
to 3.6V power-supply voltage range, the logic thresholds
are set so VIL = 0.4V (max) and VIH = 2V (min).
Power-Supply Sequencing
and Overvoltage Protection
Caution: Do not exceed the absolute maximum ratings
because stresses beyond the listed ratings can cause
permanent damage to the device. Proper power-supply
sequencing is recommended for all CMOS devices.
Always apply V+ before applying analog signals, especially if the analog signal is not current limited.
Digital Control Inputs
The MAX4729/MAX4730 logic inputs accept up to +5.5V,
regardless of supply voltage. For example, with a +3.3V
V+
VNO/NC
V+
NO/NC
NC/NO
V+
OPEN
50%
50%
IN
tr < 5ns
tf < 5ns
0V
MAX4729
MAX4730
VIN
COM
VCOM
IN
RL
GND
VNO/NC
VCOM
0V
CL
90%
90%
tON
tOFF
V+
V+
VS
V+
NO
MAX4729
MAX4730
VIN
IN
NC
0V
COM
VCOM
RL
GND
50%
50%
IN
VS
VS
90%
VCOM
CL
tBBM
tBBM = tON(NC) - tOFF(NO) OR tBBM = tON(NO) - tOFF(NC)
Figure 1. Switching Times
6
90%
0V
_______________________________________________________________________________________
tBBM
Low-Voltage 3.5Ω, SPDT,
CMOS Analog Switches
MAX4729/MAX4730
V+ 0.1µF
V+
V+
VIN
NO
OR
NC
MAX4729
MAX4730
NETWORK
ANALYZER
50Ω
50Ω
VREF
50Ω
VMEAS
MEAS
COM
IN
REF
50Ω
GND
MEASUREMENTS ARE STANDARDIZED AGAINST
SHORT AT SOCKET TERMINALS. OFF-ISOLATION IS
MEASURED BETWEEN COM AND “OFF” NO OR NC
TERMINAL ON EACH SWITCH. ON-LOSS IS MEASURED
BETWEEN COM AND “ON” TERMINAL ON EACH SWITCH.
CROSSTALK IS MEASURED FROM ONE CHANNEL TO ALL
OTHER CHANNELS. SIGNAL DIRECTION THROUGH SWITCH
IS REVERSED; WORST VALUES ARE RECORDED.
50Ω
V
OFF-ISOLATION = 20log MEAS
VREF
V
ON-LOSS = 20log MEAS
VREF
CROSSTALK = 20log
VMEAS
VREF
Figure 2. Off-Isolation/On-Loss Bandwidth, Crosstalk
V+
MAX4729
MAX4730
SWITCH
INPUT
RGEN
∆VOUT
V+
COM
NO
OR NC
SWITCH
OUTPUT
VOUT
VOUT
CL
V GEN
GND
IN
V+
IN 0V
ON
OFF
OFF
Q = (∆V OUT )(C L )
LOGIC INPUT (0 TO V+)
Figure 3. Charge Injection
Chip Information
V+
V+
AS
REQUIRED
MAX4729
MAX4730
IN
NO
OR
NC
TRANSISTOR COUNT: 190
PROCESS: CMOS
f = 1MHz
CAPACITANCE
ANALYZER
COM
GND
Figure 4. NO, NC, and COM Capacitance
_______________________________________________________________________________________
7
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
SC70, 6L.EPS
MAX4729/MAX4730
Low-Voltage 3.5Ω, SPDT,
CMOS Analog Switches
8
_______________________________________________________________________________________
Low-Voltage 3.5Ω, SPDT,
CMOS Analog Switches
6L UDFN.EPS
A
COMMON DIMENSIONS
PIN 1
INDEX AREA
A
A1
D
E
L
L1
L2
b
e
E
A1
D
TOP VIEW
SIDE VIEW
e
MIN.
0.64
-1.45
0.95
0.30
--0.17
--
NOM.
0.72
0.20
1.50
1.00
0.35
--0.20
0.50
MAX.
0.80
-1.55
1.05
0.40
0.08
0.05
0.23
--
b
5
6
4
L2
PIN 1
0.075x45
b
L
3
L1
2
A
1
SECTION A-A
A
BOTTOM VIEW
PROPRIETARY INFORMATION
TITLE:
APPROVAL
DOCUMENT CONTROL NO.
21-0147
REV.
B
1
1
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.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________ 9
© 2004 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
MAX4729/MAX4730
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)