MAX4730 [MAXIM]
Low-Voltage 3.5ohm, SPDT, CMOS Analog Switches; 低电压3.5ohm ， SPDT ， CMOS模拟开关
| 型号： | MAX4730 |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Low-Voltage 3.5ohm, SPDT, CMOS Analog Switches |
| 文件： | 总9页 (文件大小：203K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-3284; Rev 0; 5/04
Ω
Low-Voltage 3.5 , SPDT,
CMOS Analog Switches
General Description
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
ꢀ Low 3.5Ω R
(+2.7V Supply)
ON
ꢀ 0.45Ω R
Flatness (+2.7V Supply)
ON
ON
on-resistance (R ), as well as 0.45Ω R
flatness with
ON
ON
ꢀ 0.05Ω R
Match Between Channels (+2.7V
a +2.7V supply. These devices typically consume only
1nA of supply current, making them ideal for use in low-
power, portable applications. The MAX4729/MAX4730
feature low-leakage currents over the extended temper-
ature range, TTL/CMOS-compatible digital logic, and
excellent AC characteristics.
Supply)
ꢀ Tiny SC70 and µDFN Packages
ꢀ -3dB Bandwidth: 300MHz
ꢀ Low On-Capacitance: 19.5pF
ꢀ 0.036% Total Harmonic Distortion
ꢀ Low Supply Current: 1nA
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.
ꢀ +1.8V to +5.5V Single-Supply Operation
Applications
Ordering Information
Battery-Operated Equipment
Audio and Video-Signal Routing
Low-Voltage Data-Acquisition Systems
Sample-and-Hold Circuits
Communications Circuits
PIN-
PACKAGE
-40ºC to +85ºC 6 SC70-6
-40ºC to +85ºC 6 µDFN-6
TOP
MARK
ABU
PART
TEMP RANGE
MAX4729EXT-T
MAX4729ELT-T*
—
ABV
—
MAX4730EXT-T
-40ºC to +85ºC 6 SC70-6
-40ºC to +85ºC 6 µDFN-6
MAX4730ELT-T*
Relay Replacement
*Future product—contact factory for availability.
Pin Configurations/Functional Diagrams/Truth Table
TOP VIEW
MAX4729
MAX4729
MAX4730
NO
V+
IN
1
2
3
5
5
4
N.C.
IN
V+
1
2
3
6
5
NO
1
2
3
NO
GND
NC
6
5
4
IN
COM
COM
V+
GND
NC
4
GND
COM
SC70
µDFN
SC70
µDFN
MAX4729/
MAX4730
NO
IN
NC
0
1
ON
OFF
OFF
ON
SWITCHES SHOWN FOR LOGIC 0 INPUT.
________________________________________________________________ Maxim Integrated Products
1
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.
Ω
Low-Voltage 3.5 , SPDT,
CMOS Analog Switches
ABSOLUTE MAXIMUM RATINGS
(All voltages referenced to ground)
Continuous Power Dissipation (T = +70°C)
A
V+, IN .......................................................................-0.3V to +6V
COM, NO, NC (Note 1)..................................-0.3V to (V+ +0.3V)
Continuous Current (IN, V+, GND)................................... 30ꢀA
Continuous Current (COM, NO, NC) ................................ 80ꢀA
Peak Current COM, NO, NC
6-Pin µDFN (derate 2.1ꢀW/°C above +70°C) ..............168ꢀW
6-Pin SC70 (derate 3.1ꢀW/°C above +70°C)...............245ꢀW
Operating Teꢀperature Range ...........................-40°C to +85°C
Maxiꢀuꢀ Junction Teꢀperature .....................................+150°C
Storage Teꢀperature Range.............................-65°C to +150°C
Lead Teꢀperature (soldering, 10s) .................................+300°C
(Pulsed at 1ꢀs, 10% Duty Cycle)................................ 150ꢀA
Note 1: Signals on NO, NC, or COM exceeding V+ or GND are claꢀped by internal diodes. Signals on IN exceeding GND are
claꢀped by an internal diode. Liꢀit forward-diode current to ꢀaxiꢀuꢀ 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, V = +2.0V, V = +0.4V, T = T
to T , unless otherwise noted. Typical values are at T = +25°C.) (Note 2)
MAX A
IH
IL
A
MIN
PARAMETER
SYMBOL
CONDITIONS
T
MIN
TYP
MAX
UNITS
A
ANALOG SWITCH
V
,
COM
V
Analog Signal Range
0
V+
V
V
NO, NC
+25°C
to T
3.5
5.5
5.7
V+ = 2.7V, I
= 10ꢀA,
= 0V to V+
COM
On-Resistance (Note 6)
R
Ω
ON
V
or V
NO
NC
T
MIN
MAX
MAX
MAX
V+ = 2.7V, I
= 10ꢀA,
COM
+25°C
to T
0.05
0.15
V
or V
= 0.7V, 1.2V,
NC
NO
T
MIN
0.2
0.34
0.37
1.5
2V (MAX4729)
On-Resistance Match Between
Channels (Notes 3, 6)
∆R
Ω
Ω
ON
V+ = 2.7V, I
= 10ꢀA,
COM
+25°C
to T
0.2
0.8
V
or V
= 0.7V, 1.2V,
NC
NO
T
MIN
2V (MAX4730)
V+ = 2.7V, I
= 10ꢀA,
COM
+25°C
to T
V
or V
= 0.7V, 1.2V,
NC
NO
T
2.2
0.95
1.3
MIN
MAX
2V (MAX4729)
On-Resistance Flatness (Note 4)
R
FLAT(ON)
V+ = 2.7V, I
= 10ꢀA,
COM
+25°C
to T
0.45
V
or V
= 0.7V, 1.2V,
NC
NO
T
MIN
MAX
2V (MAX4730)
+25°C
T to T
MIN
-2
-3
+0.01
+0.01
+2
+3
I
I
V+ = 3.3V, V
= 1V, 3V,
NO (OFF),
COM
NO, NC Off-Leakage Current
COM On-Leakage Current
nA
nA
V
or V
= 3V, 1V
NC
NC (OFF)
NO
MAX
V+ = 3.3V, V
= 1V or
= 1V, 3V, or
NC
COM
+25°C
-3
-4
+3
+4
I
3V, V
float
or V
COM (ON)
NO
T
MIN
to T
MAX
DIGITAL INPUTS
Input Logic High
Input Logic Low
V
T
MIN
T
MIN
T
MIN
to T
to T
to T
2.0
-1
V
V
IH
MAX
MAX
MAX
V
0.4
+1
IL
Input Leakage Current
I
V
= 0V or 3.6V
IN
+0.005
µA
IN
2
_______________________________________________________________________________________
Ω
Low-Voltage 3.5 , SPDT,
CMOS Analog Switches
ELECTRICAL CHARACTERISTICS (continued)
(V+ = +2.7V to +3.6V, V = +2.0V, V = +0.4V, T = T
to T , unless otherwise noted. Typical values are at T = +25°C.) (Note 2)
MAX A
IH
IL
A
MIN
PARAMETER
SYMBOL
CONDITIONS
T
MIN
TYP
18
10
5
MAX
UNITS
A
DYNAMIC
+25°C
T to T
MIN
45
45
26
26
V
, V
= 2V, R = 300Ω,
NO NC L
Turn-On Tiꢀe (Note 5)
Turn-Off Tiꢀe (Note 5)
t
ns
ns
ON
C = 35pF, Figure 1
L
MAX
MAX
MAX
+25°C
T to T
MIN
V
, V
= 2V, R = 300Ω,
NO NC L
t
OFF
C = 35pF, Figure 1
L
+25°C
to T
V
, V
= 2V, R = 300Ω,
NO NC L
Break-Before-Make (Note 5)
Charge Injection
ns
pC
pF
C = 35pF, Figure 1
L
T
MIN
1
Q
V
= 0V, R
= 0, C = 1.0nF, Figure 3
3
GEN
GEN
L
C
,
NO(OFF)
NO, NC Off-Capacitance
Switch On-Capacitance
Off-Isolation (Note 7)
f = 1MHz, Figure 4
f = 1MHz, Figure 4
6.5
C
NC(OFF)
C
19.5
-67
-45
300
-67
-52
pF
ON
f = 1MHz
V
= V
= 1V , R =
RMS L
NO
NC
V
dB
ISO
50Ω, C = 5pF, Figure 2
L
f = 10MHz
On-Channel Bandwidth -3dB
Crosstalk (Note 8)
BW
Signal = 0dBꢀ, 50Ω in and out, Figure 2
MHz
dB
f = 1MHz
NO or NC = 1V
, C =
L
RMS
V
CT
5pF, R = 50Ω, Figure 2
L
f = 10MHz
R = 600Ω, V
2V , f = 20Hz to 20kHz
P-P
or V
=
NO
L
NC
Total Harꢀonic Distortion
THD
+25°C
0.035
%
POWER SUPPLY
Power-Supply Range
V+
I+
1.8
5.5
1
V
+25°C
0.001
Positive Supply Current
V+ = 5.5V, V = 0V or 5.5V
µA
IN
T
MIN
to T
MAX
Note 2: SC70 and µDFN parts are 100% tested at T = +25°C. Liꢀits across the full-teꢀperature range are guaranteed by design
A
and correlation.
Note 3: ∆R
= R
- R
.
ON
ON(MAX)
ON(MIN)
Note 4: R
flatness is defined as the difference between the ꢀaxiꢀuꢀ and ꢀiniꢀuꢀ value of on-resistance as ꢀeasured over the
ON
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 V
and VI is either V
or V
froꢀ the network analyzer.
NO
COM
NC
Note 8: Crosstalk is ꢀeasured between the two switches.
_______________________________________________________________________________________
3
Ω
Low-Voltage 3.5 , SPDT,
CMOS Analog Switches
Typical Operating Characteristics
(T = +25°C, unless otherwise noted.)
A
ON-RESISTANCE vs. V
(V+ = +3V)
ON-RESISTANCE vs. V
(V+ = +1.8V)
COM
COM
ON-RESISTANCE vs. V
COM
30
40
35
30
25
20
15
10
5
5
4
3
2
1
0
T
= +85°C
A
V+ = 1.8V
25
20
15
10
5
T
= +85°C
A
T
= +25°C
A
V+ = 2.5V
T
= -40°C
A
T
= -40°C
A
T
= +25°C
A
V+ = 3V
V+ = 5V
V+ = 4.5V
0
0
0
1
2
3
4
5
0
0.3
0.6
0.9
1.2
1.5
1.8
0
0.5
1.0
1.5
(V)
2.0
2.5
3.0
V
(V)
V
(V)
V
COM
COM
COM
ON-RESISTANCE vs. V
(V+ = +5V)
ON/OFF-LEAKAGE CURRENT
vs. TEMPERATURE
COM
CHARGE INJECTION vs. V
COM
60
50
40
30
20
10
0
3.0
2.5
2.0
1.5
1.0
0
500
400
300
200
100
0
ON, V = 5V
CC
T
= +85°C
A
OFF, V = 5V
CC
5V
ON, V = 3V
CC
OFF, V = 3V
CC
T
= +25°C
A
3V
T
= -40°C
A
1.8V
-100
0
1
2
3
4
5
0
1
2
3
4
5
-40
-15
10
35
60
85
V
(V)
COM
COM VOLTAGE (V)
TEMPERATURE (°C)
SUPPLY CURRENT
vs. LOGIC INPUT VOLTAGE
SUPPLY CURRENT vs. TEMPERATURE
t
/t
vs. SUPPLY VOLTAGE
ON OFF
35
30
25
20
15
10
5
1000
800
600
400
200
0
1,000,000
100,000
10,000
1000
V+ = 5V
t
ON
100
10
V+ = 5V
V+ = 3V
V+ = 3V
t
OFF
1
0.1
0.01
0.001
0
-40
-15
10
35
60
85
1.5
2.5
3.5
4.5
5.5
0
2
4
6
TEMPERATURE (°C)
SUPPLY VOLTAGE (V)
LOGIC INPUT VOLTAGE (V)
4
_______________________________________________________________________________________
Ω
Low-Voltage 3.5 , SPDT,
CMOS Analog Switches
Typical Operating Characteristics (continued)
(T = +25°C, unless otherwise noted.)
A
t
/t
vs. TEMPERATURE
OFF-ISOLATION
CROSSTALK
ON OFF
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
30
25
20
15
10
5
V+ = 3V
V+ = 3V
t
ON
V+ = 5V
V+ = 5V
V+ = 3V
t
OFF
V+ = 5V
V+ = 5V
V+ = 3V
50Ω IN AND OUT
100 1000
50Ω IN AND OUT
100 1000
0
-40
-15
10
35
60
85
0.1
1
10
0.1
1
10
TEMPERATURE (°C)
FREQUENCY (MHz)
FREQUENCY (MHz)
TOTAL HARMONIC DISTORTION
vs. FREQUENCY
TOTAL HARMONIC DISTORTION
vs. FREQUENCY
ON-LOSS BANDWIDTH
0
-1
-2
-3
-4
-5
-6
-7
0.06
0.05
0.04
0.03
0.02
0.01
0
0.06
0.05
0.04
0.03
0.02
0.01
0
OUTPUT IMPEDANCE = 600Ω
f = 20Hz to 20kHz
OUTPUT IMPEDANCE = 600Ω
V+ = 3V
V+ = 5V
MAX4730
V+ = 3V, V
= 3V
V+ = 3V, V
= 3V
GEN
P-P
GEN P-P
V+ = 3V, V
= 2V
P-P
GEN
V+ = 3V, V
= 2V
P-P
GEN
V+ = 5V, V
V+ = 5V, V
= 5V
= 3V
GEN
P-P
P-P
GEN
V+ = 5V, V
= 5V
= 3V
GEN
P-P
V+ = 5V, V
0.1
GEN
P-P
1
50Ω IN AND OUT
10 100 1000
0.01
0.1
1
0.01
0.1
1
10
100
0.01
10
100
FREQUENCY (MHz)
FREQUENCY (kHz)
FREQUENCY (kHz)
Pin Description
PIN
NAME
FUNCTION
MAX4729
MAX4730
SC70
µDFN
SC70/µDFN
1
2
3
4
5
6
3
2
4
6
5
1
6
5
2
3
4
1
IN
V+
Logic-Control Input
Positive Supply Voltage
Ground
GND
NC
Analog Switch Norꢀally Closed Terꢀinal
Analog Switch Coꢀꢀon Terꢀinal
COM
NO
Analog Switch Norꢀally Open Terꢀinal
_______________________________________________________________________________________
5
Ω
Low-Voltage 3.5 , SPDT,
CMOS Analog Switches
supply, IN can be driven low to GND and high to +5.5V,
allowing for ꢀixing of logic levels in a systeꢀ. With a 2.7V
to 3.6V power-supply voltage range, the logic thresholds
Detailed Description
The MAX4729/MAX4730 single-pole/double-throw
(SPDT) switches operate froꢀ a single supply ranging
froꢀ +1.8V to +5.5V. These switches provide low 3.5Ω
are set so V = 0.4V (ꢀax) and V = 2V (ꢀin).
IL
IH
on-resistance (R ), as well as 0.45Ω R
flatness with
ON
ON
Power-Supply Sequencing
and Overvoltage Protection
a 2.7V supply. These devices typically consuꢀe only
1nA of supply current, ꢀaking theꢀ suitable for use in
low-power, portable applications. The MAX4729/
MAX4730 feature low-leakage currents over the entire
teꢀperature range, TTL/CMOS-coꢀpatible digital logic,
and excellent AC characteristics.
Caution: Do not exceed the absolute ꢀaxiꢀuꢀ ratings
because stresses beyond the listed ratings can cause
perꢀanent daꢀage to the device. Proper power-supply
sequencing is recoꢀꢀended for all CMOS devices.
Always apply V+ before applying analog signals, espe-
cially if the analog signal is not current liꢀited.
Applications Information
Digital Control Inputs
The MAX4729/MAX4730 logic inputs accept up to +5.5V,
regardless of supply voltage. For exaꢀple, with a +3.3V
V+
V+
t < 5ns
r
t < 5ns
f
V+
V
NO/NC
NO/NC
OPEN
NC/NO
COM
50%
IN
V
50%
0V
MAX4729
MAX4730
V
COM
V
IN
IN
NO/NC
R
L
90%
90%
C
L
V
COM
GND
0V
t
ON
t
OFF
V+
V+
V+
50%
IN
50%
V
NO
IN
S
NC
V
S
0V
MAX4729
MAX4730
V
S
COM
V
COM
90%
90%
V
COM
V
IN
0V
R
L
C
L
GND
t
t
BBM
BBM
t
t
t
OR t t t
BBM = ON(NO) - OFF(NC)
BBM = ON(NC) - OFF(NO)
Figure 1. Switching Times
6
_______________________________________________________________________________________
Ω
Low-Voltage 3.5 , SPDT,
CMOS Analog Switches
V+ 0.1µF
NETWORK
ANALYZER
V
V
IN
REF
50Ω
50Ω
V+
NO
OR
NC
50Ω
MAX4729
V
MEAS
MAX4730
MEAS
REF
COM
V+
IN
50Ω
50Ω
GND
MEASUREMENTS ARE STANDARDIZED AGAINST
V
V
MEAS
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.
OFF-ISOLATION = 20log
REF
V
V
MEAS
ON-LOSS = 20log
REF
V
MEAS
CROSSTALK = 20log
V
REF
Figure 2. Off-Isolation/On-Loss Bandwidth, Crosstalk
V+
MAX4729
∆V
OUT
MAX4730
V+
SWITCH
OUTPUT
SWITCH
INPUT
V
OUT
R
GEN
COM
NO
V
OUT
OR NC
C
L
V
GEN
GND
IN
V+
0V
ON
Q = (∆V )(C )
OFF
OFF
IN
OUT
L
LOGIC INPUT (0 TO V+)
Figure 3. Charge Injection
Chip Information
V+
V+
TRANSISTOR COUNT: 190
PROCESS: CMOS
NO
OR
NC
f = 1MHz
CAPACITANCE
ANALYZER
MAX4729
MAX4730
AS
REQUIRED
COM
IN
GND
Figure 4. NO, NC, and COM Capacitance
_______________________________________________________________________________________
7
Ω
Low-Voltage 3.5 , SPDT,
CMOS Analog Switches
Package Information
(The package drawing(s) in this data sheet ꢀay not reflect the ꢀost current specifications. For the latest package outline inforꢀation,
go to www.maxim-ic.com/packages.)
8
_______________________________________________________________________________________
Ω
Low-Voltage 3.5 , SPDT,
CMOS Analog Switches
Package Information (continued)
(The package drawing(s) in this data sheet ꢀay not reflect the ꢀost current specifications. For the latest package outline inforꢀation,
go to www.maxim-ic.com/packages.)
A
COMMON DIMENSIONS
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
--
PIN 1
INDEX AREA
A
A1
D
E
L
L1
L2
b
E
A1
D
e
TOP VIEW
SIDE VIEW
e
b
5
6
4
b
PIN 1
0.075x45
L2
L
3
2
1
SECTION A-A
A
A
L1
BOTTOM VIEW
PROPRIETARY INFORMATION
TITLE:
APPROVAL
DOCUMENT CONTROL NO.
REV.
1
21-0147
B
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 Maxiꢀ Integrated Products
Printed USA
is a registered tradeꢀark of Maxiꢀ Integrated Products.
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