MAX4539EAP+T [MAXIM]
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| 型号： | MAX4539EAP+T |
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MAXIM INTEGRATED PRODUCTS |
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19-4780; Rev 1; 6/99
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
39/MAX540
General Description
Features
♦ On-Chip Gain and Offset Divider Networks
The MAX4539/MAX4540 low-voltage, CMOS 8-channel
(MAX4539) and dual 4-channel (MAX4540) multiplexers
are ideal for precision ADC calibration and system self-
monitoring applications. These calibration multiplexers
(cal-muxes) have precision resistor-dividers to generate
accurate voltage ratios from an input reference voltage.
The reference ratios include 15/4096 and 4081/4096 of
the external reference voltage, accurate to 15 bits, and
1/2V+ and 5/8(V+ - V-), accurate to 8 bits. The external
reference voltage as well as ground can also be
switched to the output. The MAX4539/MAX4540 have
enable inputs and address latching. All digital inputs
have 0.8V and 2.4V logic thresholds, ensuring both
TTL- and CMOS-logic compatibility when using a 5V
or a single +5V supply. Protection diodes at all inputs
provide an ESD rating >2kV.
Provide 15-Bit Accurate Output Ratios
♦ On-Chip V+ to GND and V+ to V- Divider Networks
Provide 8-Bit Accurate Output Ratios
♦ R : 100Ω max
ON
♦ R
Matching Between Channels: 6Ω max
ON
♦ Charge Injection: 5pC max
♦ Low 0.1nA Off Leakage Current
♦ Small 20-Pin SSOP/SO/DIP Packages
Pin Configurations/
_______________Functional Diagrams
The MAX4539/MAX4540 operate from a single +2.7V to
+12V supply, or from dual supplies of 2.7V to 6V.
On-resistance (100Ω max) is matched between switch-
es to 6Ω max. Each switch can handle Rail-to-Rail®
analog signals. The off leakage current is 0.1nA at
T = +25°C and 2nA at T = +85°C.
1
20
19
V+
MAX4539
R2
LATCH
EN
3R
LOGIC
DECODER
A
A
18
17
16
CAL
A0
The MAX4539/MAX4540 are available in small 20-pin
DIP, SO, and SSOP packages.
A1
Applications
Avionics
15
A2
Battery-Operated Equipment
Data-Acquisition Systems
Test Equipment
5R
R2
Audio-Signal Routing
Networking
2
3
4
GND
V-
REFHI
Ordering Information
15R1
4081R1
PART
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
20 SSOP
MAX4539CAP
MAX4539CWP
MAX4539CPP
MAX4539EAP
MAX4539EWP
MAX4539EPP
MAX4540CAP
MAX4540CWP
MAX4540CPP
MAX4540EAP
MAX4540EWP
MAX4540EPP
20 Wide SO
20 Plastic DIP
20 SSOP
15R1
20 Wide SO
20 Plastic DIP
20 SSOP
4081R1
5
REFLO
COM
6
7
8
9
14
13
12
20 Wide SO
20 Plastic DIP
20 SSOP
NO1
NO2
NO3
NO8
NO7
NO6
11
10
NO4
NO5
20 Wide SO
20 Plastic DIP
MAX4540 appears at end of data sheet.
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
________________________________________________________________ Maxim Integrated Products
1
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.
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
ABSOLUTE MAXIMUM RATINGS
V+ to GND..............................................................-0.3V to +13V
V- to GND ...............................................................-13V to +0.3V
V+ to V-...................................................................-0.3V to +13V
CAL, LATCH, A_, EN, NO_, COM_,
REFHI, REFLO (Note 1) ........................(V- - 0.3V) to (V+ + 0.3V)
Continuous Current (any terminal).................................... 20mA
Peak Current, NO_ or COM_
Continuous Power Dissipation (T = +70°C)
A
SSOP (derate 8mW/°C above +70°C) ..........................640mW
Wide SO (derate 8mW/°C above +70°C)......................800mW
Plastic DIP (derate 10.53mW/°C above +70°C) ...........842mW
Operating Temperature Ranges
MAX4539C_P/MAX4540C_P................................0°C to +70°C
MAX4539E_P/MAX4540E_P .............................-40°C to +85°C
Storage Temperature Range.............................-65°C to +160°C
Lead Temperature (soldering, 10sec) ............................+300° C
(pulsed at 1ms, 10ꢀ duty cycle max)........................... 40mA
Note 1: Signals on NO_, COM_, EN, LATCH, CAL, A_ exceeding V+ or V- are clamped by internal diodes. Limit forward current to
maximum current ratings.
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
39/MAX540
(V+ = +5V 10ꢀ, V- = -5V 10ꢀ, V = 2.4V, V = 0.8V, T = T
to T
, unless otherwise noted. Typical values at T = +25°C.)
IH
IL
A
MIN
MAX A
(Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
SWITCH
V
V
,
COM_
NO_
Analog-Signal Range
(Note 3)
= 1mA, V
V-
V+
V
T
T
= +25°C
45
1
75
A
I
=
NO_
3.0V,
3.0V,
COM_
On-Resistance
R
ON
Ω
V+ = 4.5V, V- = -4.5V
= T
to T
100
A
MIN
MAX
On-Resistance Matching
Between Channels
(Note 4)
T
T
= +25°C
4
6
A
I
= 1mA, V =
NO_
COM_
∆R
Ω
ON
V+ = 4.5V, V- = -4.5V
I = 1mA; V = -3V, 0, +3V;
COM_
= T
to T
A
MIN
MAX
T
A
T
A
T
A
T
A
T
A
T
A
T
A
T
A
T
A
T
A
T
A
T
A
= +25°C
7
10
13
0.1
2
On-Resistance Flatness
(Note 5)
NO_
R
Ω
FLAT
V+ = 4.5V; V- = -4.5V
4.5V, V = 4.5V,
NO_
= T
to T
MIN
MAX
MAX
MAX
MAX
MAX
MAX
= +25°C
= T to T
-0.1
-2
0.01
0.01
0.01
0.01
0.01
NO-Off Leakage Current
(Note 6)
V
COM_
=
I
nA
NO(OFF)
V+ = 5.5V, V- = -5.5V
MIN
= +25°C
= T to T
-0.2
-10
-0.1
-5
0.2
10
0.1
5
V
V
=
4.5V,
4.5V,
COM_
MAX4539
MAX4540
MAX4539
MAX4540
MIN
COM-Off Leakage
Current (Note 6)
=
NO_
I
nA
nA
COM_(OFF)
V+ = 5.5V,
V- = -5.5V
= +25°C
= T to T
MIN
= +25°C
= T to T
-0.2
-10
-0.1
-5
0.2
10
0.1
5
V
V
=
4.5V,
COM_
MIN
COM-On Leakage
Current (Note 6)
= 4.5V,
NO_
I
COM_(ON)
V+ = 5.5V,
V- = -5.5V
= +25°C
= T to T
MIN
2
_______________________________________________________________________________________
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
39/MAX540
ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)
(V+ = +5V 10ꢀ, V- = -5V 10ꢀ, V = 2.4V, V = 0.8V, T = T
to T , unless otherwise noted. Typical values at T = +25°C.)
MAX A
IH
IL
A
MIN
(Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
LOGIC INPUTS
Input High Voltage
Input Low Voltage
V
2.4
1.7
1.4
V
V
IH
V
0.8
0.1
IL
Input Current with Input
Voltage High
I
IH
V
V
= V = V
= V
= V
= V+
= 0
-0.1
-0.1
0.01
0.01
µA
µA
EN
A_
LATCH
CAL
Input Current with Input
Voltage Low
I
IL
= V = V
0.1
EN
A_
LATCH
CAL
SUPPLY
Power-Supply Range
2.7
-1
6
1
V
V
= V = V
= V
= 0
= 0
= 0
EN
A_
LATCH
CAL
T
A
T
A
T
A
T
A
T
A
T
A
= +25°C
0.01
0.01
0.01
Positive Supply Current
Negative Supply Current
GND Supply Current
I+
I-
or V+, V+ = 5.5V, V- = -5.5V
(Note 7)
µA
= T
to T
-5
-1
-5
-1
-5
5
1
5
1
5
MIN
MAX
MAX
MAX
V
EN
= V = V
= V
A_
LATCH CAL
= +25°C
= T to T
or V+, V+ = 5.5V, V- = -5.5V
(Note 7)
µA
µA
MIN
V
EN
= V = V
= V
A_
LATCH CAL
= +25°C
= T to T
I
or V+, V+ = 5.5V, V- = -5.5V
(Note 7)
GND
MIN
DYNAMIC CHARACTERISTICS
T
A
T
A
T
A
T
A
T
A
T
A
T
A
T
A
= +25°C
100
10
150
200
Transition Time
t
Figure 1
Figure 2
Figure 3
Figure 3
ns
ns
ns
ns
TRANS
= T
to T
MIN
MAX
MAX
MAX
MAX
= +25°C
= T to T
4
1
Break-Before-Make
Interval (Note 3)
t
OPEN
MIN
= +25°C
= T to T
75
115
175
100
120
Enable Turn-On Time
Enable Turn-Off Time
t
ON
MIN
= +25°C
= T to T
50
t
OFF
MIN
Charge Injection
(Note 3)
V
C = 1nF, V
= 0, Figure 4
T
T
T
T
T
= +25°C
= +25°C
= +25°C
= +25°C
= +25°C
1
5
pC
dB
dB
pF
pF
CTE
L
NO_
A
A
A
A
A
Off-Isolation (Note 8)
V
V
= 0, f = 1MHz, Figure 5
= 2.4V, f = 1MHz,
= 1Vp-p, Figure 5
-75
-75
15
3
ISO
EN
Crosstalk Between
Channels (Note 9)
V
V
EN
V
CT
GEN
Logic Input Capacitance
C
f = 1MHz
IN
f = 1MHz, V = V
EN
Figure 6
= 0,
= 0,
COM_
NO-Off Capacitance
C
OFF
f = 1MHz, V = V
EN
Figure 6
COM_
COM-Off Capacitance
COM-On Capacitance
C
T
T
= +25°C
= +25°C
15
26
pF
pF
COM_(OFF)
A
f = 1MHz, V = 2.4V,
EN
C
COM_(ON)
A
V
COM_
= 0, Figure 6
_______________________________________________________________________________________
3
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)
(V+ = +5V 10ꢀ, V- = -5V 10ꢀ, V = 2.4V, V = 0.8V, T = T
to T , unless otherwise noted. Typical values at T = +25°C.)
MAX A
IH
IL
A
MIN
(Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
45
0
MAX
UNITS
LATCH TIMING (Note 3)
T
= +25°C
70
80
A
A
A
A
Setup Time
t
S
Figure 7
ns
ns
ns
ns
T
T
T
= T
to T
MIN
MAX
MAX
MAX
MAX
= +25°C
= T to T
-10
-10
30
Hold Time
t
H
Figure 7
Figure 7
Figure 8
MIN
T
= +25°C
15
15
A
A
Pulse Width, Latch
Enable
t
MPW
T
= T
to T
40
MIN
T
= +25°C
30
40
A
A
Enable Setup Time
t
ES
T
= T
to T
MIN
INTERNAL DIVIDERS
14.9/
4096
15/
4096
15.1/
4096
T
= +25°C
A
V
= 4.096V,
REF
39/MAX540
Offset Divider Output
Gain Divider Output
(V+ / 2) Divider Output
(V+ - V-) Divider Output
REFHI = 4.096V,
REFLO = GND
LSB
LSB
LSB
LSB
14.9/
4096
15/
4096
15.1/
4096
T
A
= T
to T
MIN
MAX
MAX
MAX
MAX
4080.9/ 4081/ 4081.1/
4096 4096 4096
T
A
= +25°C
V
REF
= 4.096V,
REFHI = 4.096V,
REFLO = GND
4080.9/ 4081/ 4081.1/
4096
T
A
= T
to T
MIN
4096
4096
2032/
4096
2048/
4096
2064/
4096
T
A
= +25°C
Referenced to GND
Referenced to V-
2032/
4096
2048/
4096
2064/
4096
T
A
= T
to T
MIN
2544/
4096
2560/
4096
2576/
4096
T
= +25°C
A
A
A
A
A
A
A
A
2544/
4096
2560/
4096
2576/
4096
T
T
T
T
T
T
T
= T
to T
MIN
Output Resistance Offset
Divider
(Note 3)
(Note 3)
(Note 3)
(Note 3)
(Note 3)
= +25°C
= +25°C
= +25°C
= +25°C
= +25°C
= +25°C
400
400
6
800
800
9
Ω
Ω
Output Resistance Gain
Divider
Output Resistance
(V+ / 2) Divider
kΩ
kΩ
Ω
Output Resistance
(V+ - V-) Divider
6
9
Output Resistance
(REFHI, REFLO, GND)
400
800
Additional Positive Supply
Current
(V+ / 2) divider active,
= V+, V = 0 (Note 3)
V+ /
24k
V+ /
13k
mA
V
IH
IL
4
_______________________________________________________________________________________
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
39/MAX540
ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)
(V+ = +5V 10ꢀ, V- = -5V 10ꢀ, V = 2.4V, V = 0.8V, T = T
to T , unless otherwise noted. Typical values at T = +25°C.)
MAX A
IH
IL
A
MIN
(Note 2)
PARAMETER
SYMBOL
CONDITIONS
(V+ - V-) divider active,
= V+, V = 0
MIN
TYP
(V+ - V-)/ (V+ - V-)/
24k 13k
(V+ - V-)/ (V+ - V-)/
MAX
UNITS
Additional Positive Supply
Current (Note 3)
T
T
= +25°C
= +25°C
mA
A
V
IH
IL
Additional Negative
Supply Current
(V+ - V-) divider active,
= V+, V = 0 (Note 3)
mA
V
A
V
IH
24k
13k
IL
REFHI, REFLO Input
Range (Note 3)
V-
- 0.3
V+
+ 0.3
Input Resistance
(REFHI, REFLO) (Note 3)
Offset divider active,
gain divider active
T
A
= +25°C
25
40
kΩ
ELECTRICAL CHARACTERISTICS—Single +5V Supply
(V+ = +5V 10ꢀ, V- = 0, V = 2.4V, V = 0.8V, T = T
to T , unless otherwise noted. Typical values at T = +25°C.) (Note 2)
MAX A
IH
IL
A
MIN
PARAMETER
SWITCH
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V
,
NO_
Analog-Signal Range
On-Resistance
(Note 3)
= 1mA, V
0
V+
V
V
COM_
T
T
= +25°C
80
2
150
200
A
I
= 3.0V,
COM_
NO_
NO_
NO_
R
Ω
ON
V+ = 4.5V
= T
to T
A
MIN
MAX
On-Resistance Matching
Between Channels
(Notes 3, 4)
T
= +25°C
8
A
A
I
= 1mA, V
= 3.0V,
COM_
∆R
Ω
ON
V+ = 4.5V
T
= T
to T
12
MIN
MAX
On-Resistance Flatness
(Note 5)
I
= 1mA; V
= 3V, 2V, 1V;
COM_
R
T
A
= +25°C
8
Ω
FLAT
V+ = 4.5V
MAX
MAX
MAX
MAX
MAX
T
A
T
A
T
A
T
A
T
A
T
A
T
A
T
A
T
A
T
A
= +25°C
-0.1
-2
0.1
2
NO-Off Leakage Current
(Notes 6, 10)
V = 1V, 4.5V;
COM_
I
nA
NO(OFF)
V
NO_
= 4.5V, 1V; V+ = 5.5V
= T
to T
MIN
= +25°C
= T to T
-0.2
-10
-0.1
-5
0.2
10
0.1
5
MAX4539
= 4.5V, 1V;
= 1V, 4.5V;
NO_
V
V
COM_
MIN
COM-Off Leakage
Current (Notes 6, 10)
I
nA
nA
COM_(OFF)
= +25°C
= T to T
V+ = 5.5V
MAX4540
MAX4539
MAX4540
MIN
= +25°C
= T to T
-0.2
-10
-0.1
-5
0.2
10
0.1
5
V
V
= 4.5V,
= 4.5V,
NO_
COM_
MIN
COM-On Leakage
Current (Notes 6, 10)
I
COM_(ON)
= +25°C
= T to T
V+ = 5.5V
MIN
_______________________________________________________________________________________
5
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
ELECTRICAL CHARACTERISTICS—Single +5V Supply (continued)
(V+ = +5V 10ꢀ, V- = 0, V = 2.4V, V = 0.8V, T = T
to T , unless otherwise noted. Typical values at T = +25°C.) (Note 2)
MAX A
IH
IL
A
MIN
PARAMETER
LOGIC INPUTS (Note 3)
Input High Voltage
Input Low Voltage
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V
IH
2.4
1.6
1.4
V
V
V
IL
0.8
0.1
Input Current with
Input Voltage High
I
IH
V
= V = V
= V
= V
= V+
= 0
-0.1
-0.1
µA
µA
EN
A_
LATCH
CAL
Input Current with
Input Voltage Low
I
IL
V
EN
= V = V
0.1
A_
LATCH
CAL
SUPPLY
Power-Supply Range
2.7
-1
12
1
V
T
T
= +25°C
0.01
0.01
A
Positive Supply Current
(Note 3)
V
= V = V
= V
= V
= 0
= 0
EN
A_
LATCH
CAL
I+
µA
or V+, V+ = 5.5V
V = V = V
EN
= T
to T
-5
5
A
MIN
MAX
39/MAX540
T
T
= +25°C
-1
1
A
GND Supply Current
(Note 3)
A_
LATCH
CAL
I
µA
GND
or V+, V+ = 5.5V
= T
to T
-10
10
A
MIN
MAX
DYNAMIC CHARACTERISTICS (Note 3)
T
A
T
A
T
A
T
A
T
A
T
A
T
A
T
A
T
A
= +25°C
150
10
200
250
Transition Time
t
Figure 1
Figure 2
Figure 3
Figure 3
ns
ns
ns
TRANS
= T
to T
MIN
MAX
MAX
MAX
MAX
= +25°C
= T to T
4
1
Break-Before-Make
Interval
t
OPEN
MIN
= +25°C
= T to T
115
60
150
200
100
130
5
Enable Turn-On Time
Enable Turn-Off Time
t
ON
MIN
= +25°C
= T to T
t
ns
OFF
MIN
Charge Injection
V
CTE
C = 1nF, V
L
= 0, Figure 4
NO_
= +25°C
1
pC
LATCH TIMING (Note 3)
T
A
T
A
T
A
T
A
T
A
T
A
T
A
T
A
= +25°C
70
80
Setup Time
Hold Time
t
Figure 7
Figure 7
Figure 7
Figure 8
ns
ns
ns
ns
S
= T
to T
MIN
MAX
MAX
MAX
MAX
= +25°C
= T to T
-10
-10
30
0
t
H
MIN
= +25°C
= T to T
15
15
Pulse Width, Latch
Enable
t
MPW
40
MIN
= +25°C
= T to T
30
40
Enable Setup Time
t
ES
MIN
6
_______________________________________________________________________________________
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
39/MAX540
ELECTRICAL CHARACTERISTICS—Single +3V Supply
(V+ = +2.7V to +3.6V, V- = 0, V = 2.4V, V = 0.5V, T = T
to T , unless otherwise noted. Typical values at T = +25°C.)
MAX A
IH
IL
A
MIN
(Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
SWITCH
Analog-Signal Range
V
(Note 3)
0
V+
500
600
V
COM_
T
= +25°C
220
A
I
= 0.2mA, V
= 1.5V,
COM_
NO_
On-Resistance
R
Ω
ON
V+ = 2.7V
T
A
= T to T
MIN MAX
LOGIC INPUTS (Note 3)
Input High Voltage
Input Low Voltage
V
2.4
1.1
1.1
V
V
IH
V
0.5
IL
DYNAMIC (Note 3)
V
= 1.5V, V
= 0,
NO1
NO8
Transition Time
t
T
A
= +25°C
260
400
ns
TRANS
Figure 1
Enable Turn-On Time
Enable Turn-Off Time
LATCH TIMING (Note 3)
Setup Time
t
V
V
= 1.5V, Figure 3
T
T
= +25°C
= +25°C
220
100
350
150
ns
ns
ON
NO1
A
t
= 1.5V, Figure 3
NO
OFF
A
t
S
Figure 7
Figure 7
T
T
= +25°C
= +25°C
100
ns
ns
A
Hold Time
t
H
-10
40
0
A
Pulse Width, Latch
Enable
t
Figure 7
Figure 8
T
T
= +25°C
= +25°C
ns
ns
MPW
A
Enable Setup Time
t
ES
50
A
Note 2: The algebraic convention, where the most negative value is a minimum and the most positive value a maximum, is used in
this data sheet.
Note 3: Guaranteed by design.
Note 4: ∆R
= R
- R
.
ON
ON(MAX)
ON(MIN)
Note 5: Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the
specified analog signal range.
Note 6: Leakage parameters are 100ꢀ tested at maximum-rated hot temperature and guaranteed by correlation at T = +25°C.
A
Note 7: If the logic inputs can float during power-on, connect a 1MΩ pull-up from LATCH to V+; see Applications Information
section.
Note 8: Off Isolation = 20log (V
/V ), V
= output, V
= input to off switch.
10 COM NO
COM
NO
Note 9: Between any two switches.
Note 10: Leakage testing with a single supply is guaranteed by testing with dual supplies.
_______________________________________________________________________________________
7
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
Typical Operating Characteristics
(T = +25°C, unless otherwise noted.)
A
ON-RESISTANCE vs. V
AND TEMPERATURE
ON-RESISTANCE vs. V
AND TEMPERATURE
COM
COM
(SINGLE SUPPLY)
(DUAL SUPPLIES)
LEAKAGE CURRENT vs. TEMPERATURE
60
100
100n
V+ = 5V
V- = -5V
T
= +85°C
A
T = +85°C
A
90
80
70
60
50
40
30
20
10
0
T
= +70°C
10n
A
50
40
30
20
10
0
T
A
= +70°C
COM(ON)
1n
T
= +25°C
A
COM(OFF)
100p
10p
T
= -40°C
A
T
= +25°C
A
T
A
= -40°C
1p
NO(OFF)
100f
V+ = 5V
V- = 0
V+ = 5V
V- = -5V
10f
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
(V)
-5 -4 -3 -2 -1
0
1
2
3
4
5
-40 -20
0
20 40 60 80 100 120
TEMPERATURE (°C)
39/MAX540
V
V
COM
(V)
COM
ON-RESISTANCE vs. V
(SINGLE SUPPLY)
ON-RESISTANCE vs. V
(DUAL SUPPLIES)
COM
COM
SUPPLY CURRENT vs. TEMPERATURE
190
170
150
130
110
90
110
100
90
100n
10n
1n
V- = 0
V+ = 5V
V- = -5V
V+ = 2.4V
V- = -2.4V
V+ = 2.7V
I+
I-
80
V+ = 2.7V
V- = -2.7V
V+ = 3V
V+ = 5V
100p
10p
1p
70
V+ = 3V
V- = -3V
60
70
50
V+ = 7.5V
V+ = 5V
V- = -5V
V+ = 10V
50
40
30
30
0.1p
0
1
2
3
4
5
6
7
8
9
10
-5 -4 -3 -2 -1
0
1
2
3
4
5
-40 -20
0
20 40 60 80 100 120 140
TEMPERATURE (°C)
V
COM
(V)
V
COM
(V)
ON/OFF TIME vs. TEMPERATURE
CHARGE INJECTION vs. V
ON/OFF TIME vs. SUPPLY VOLTAGE
COM
100
80
60
40
20
0
10
8
180
160
140
120
100
80
V+ = 5V
V- = -5V
t
ON
6
DUAL SUPPLIES
V+ = 5V, V- = -5V
t
OFF
t
ON
4
2
60
t
OFF
40
0
-20
-40
SINGLE SUPPLY
V+ = 5V
20
-2
0
-20
0
40
60
80 100
20
-40
-5 -4 -3 -2 -1
0
1
2
3
4
5
2
3
4
5
TEMPERATURE (°C)
V
COM
(V)
V+, V- (V)
8
_______________________________________________________________________________________
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
39/MAX540
Typical Operating Characteristics (continued)
(T = +25°C, unless otherwise noted.)
A
R
vs. TEMPERATURE
TOTAL HARMONIC DISTORTION
vs. FREQUENCY
OUT
(V+ / 2 DIVIDER AND V+ - V- DIVIDER)
FREQUENCY RESPONSE
MAX4539-10
0.1
6030
5980
0
180
140
100
60
V+ = 5V
V- = -5V
INSERTION
LOSS
-10
(V+ / 2) R
OUT
600Ω IN/OUT
= 5Vp-p
-20
V
IN
5930
5880
5830
5780
5730
5680
-30
ON
PHASE
-40
20
-20
0.01
-50
-60
-60
(V+ - V-) R
OUT
-70
-100
-140
OFF
ISOLATION
V+ = 5V
V- = -5V
V+ = 5V
V- = -5V
-80
-90
0.001
-180
-20
0
40
60
80 100
20
-40
10
100
1k
10k
100k
0.1
1
10
100
1000
TEMPERATURE (°C)
FREQUENCY (Hz)
FREQUENCY (MHz)
GAIN DIVIDER OUTPUT
vs. TEMPERATURE
(V+ / 2) DIVIDER OUTPUT
vs. TEMPERATURE
(V+ - V-) DIVIDER OUTPUT
vs. TEMPERATURE
2050.0
2049.5
2049.0
2558.5
2558.4
2558.3
2558.2
2558.1
2558.0
4081.10
4081.08
4081.06
4081.04
4081.02
V+ = +5V
V- = -5V
V
REFLO
V+ = 5V
V- = -5V
= 4.096V
= 0
V+ = 5V
V- = -5V
REFHI
V
4081.00
4080.98
4080.96
4080.94
4080.92
4080.90
20
TEMPERATURE (°C)
-20
0
60
TEMPERATURE (°C)
80 100
-20
0
40
60
80 100
20
40
-20
0
60
80 100
-40
-40
-40
20
40
TEMPERATURE (°C)
OFFSET DIVIDER OUTPUT
vs. TEMPERATURE
GAIN DIVIDER OUTPUT vs. REFHI
OFFSET DIVIDER OUTPUT vs. REFHI
4081.10
15.10
15.08
15.06
15.04
15.02
15.10
15.08
15.06
15.04
15.02
V
= 0
REFLO
V+ = 5V
V
V
= 4.096V
= 0
REFHI
REFLO
V
= 0
4081.08
4081.06
4081.04
4081.02
REFLO
V+ = 5V
V- = -5V or 0
V+ = 5V
V- = -5V
V- = -5V or 0
4081.00
4080.98
4080.96
4080.94
4080.92
4080.90
15.00
14.98
14.96
14.94
14.92
14.90
15.00
14.98
14.96
14.94
14.92
14.90
2.0
2.5
3.0
3.5
4.0
4.5
5.0
-20
0
40
60
80 100
20
2.0
2.5
3.0
3.5
4.0
4.5
5.0
-40
REFHI (V)
REFHI (V)
TEMPERATURE (°C)
_______________________________________________________________________________________
9
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
Typical Operating Characteristics (continued)
(T = +25°C, unless otherwise noted.)
A
R
vs. TEMPERATURE
(V+ - V-) DIVIDER OUTPUT
vs. SUPPLY VOLTAGE
(V+ / 2) DIVIDER OUTPUT
vs. SUPPLY VOLTAGE
OUT
(OFFSET DIVIDER AND GAIN DIVIDER)
260
250
240
230
220
210
200
190
2565
2560
2555
2550
2055
2054
2053
2052
2051
GAIN DIVIDER
2050
2049
2048
2047
2046
2045
OFFSET DIVIDER
V+ = 5V
V- = -5V
V
V
= 4.096V
= 0
REFHI
REFLO
-20
0
20
40
60
80 100
-40
1
2
3
4
5
2
3
4
5
6
TEMPERATURE (°C)
V+, V- (V)
V+, V- (V)
39/MAX540
Pin Descriptions
MAX4540 (Dual 4-to-1 Cal-Mux)
MAX4539 (Single 8-to-1 Cal-Mux)
PIN
NAME
FUNCTION
PIN
NAME
FUNCTION
1
2
V+
GND
V-
Positive Supply Voltage
Ground
1
2
V+
GND
V-
Positive Supply Voltage
Ground
3
Negative Supply Voltage
Reference High Voltage Input
Reference Low Voltage Input
Multiplexer Output
Channel Input 1
3
Negative Supply Voltage
Reference High Voltage Input
Reference Low Voltage Input
Multiplexer Output A
Channel Input 1A
4
REFHI
REFLO
COM
NO1
NO2
NO3
NO4
NO5
NO6
NO7
NO8
A2
4
REFHI
REFLO
COMA
NO1A
NO2A
NO3A
NO4A
NO1B
NO2B
NO3B
NO4B
COMB
A1
5
5
6
6
7
7
8
Channel Input 2
8
Channel Input 2A
9
Channel Input 3
9
Channel Input 3A
10
11
12
13
14
15
16
17
18
19
20
Channel Input 4
10
11
12
13
14
15
16
17
18
19
20
Channel Input 4A
Channel Input 5
Channel Input 1B
Channel Input 6
Channel Input 2B
Channel Input 7
Channel Input 3B
Channel Input 8
Channel Input 4B
Address Bit 2
Multiplexer Output B
Address Bit 1
A1
Address Bit 1
A0
Address Bit 0
A0
Address Bit 0
CAL
EN
Calibration Control Input
Multiplexer Enable
Address Latch Control Input
CAL
Calibration Control Input
Multiplexer Enable
Address Latch Control Input
EN
LATCH
LATCH
10 ______________________________________________________________________________________
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
39/MAX540
Truth Tables
MAX4539 (Single 8-to-1 Cal-Mux)
CAL
A2
A1
A0
EN
LATCH
COM
All switches and dividers open. COM is high-Z. Latch contents set
to all 1’s.
X
X
X
X
0
X
X
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
X
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
X
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
X
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
State is latched when LATCH is high.
NO1
NO2
NO3
NO4
NO5
NO6
NO7
NO8
(V+ / 2) Divider Mode, V
= 2048/4096 V+
COM
REFHI
REFLO
(V+ - V-) Divider Mode , V
= 2560/4096 (V+ - V-)
COM
GND
Gain Divider Mode, V
= 4081/4096 (V
- V
)
COM
REFHI
REFLO
Offset Divider Mode, V
= 15/4096 (V
- V
)
COM
REFHI
REFLO
All switches and dividers open. COM is high-Z.
X = Don’t care
MAX4540 (Dual 4-to-1 Cal-Mux)
CAL
A1
A0
EN
LATCH
COMA
COMB
All switches and dividers open.
COMA is high-Z.
All switches and dividers open.
COMB is high-Z.
X
X
X
0
X
X
0
0
0
0
1
1
1
X
0
0
1
1
0
0
1
X
0
1
0
1
0
1
0
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
State is latched
NO1A
State is latched
NO1B
NO2A
NO2B
NO3A
NO3B
NO4A
NO4B
GND
GND
Gain Divider Mode
Offset Divider Mode
REFLO
REFLO
All switches and dividers open.
COMA is high-Z.
All switches and dividers open.
COMB is high-Z.
1
1
1
1
0
X = Don’t care
______________________________________________________________________________________ 11
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
biased by either V+ or V- and the analog signal. This
Detailed Description
means their leakage varies as the signal varies. The
difference in the two-diode leakage from the signal
path to the V+ and V- pins constitutes the analog-
signal path leakage current. All analog-leakage cur-
rent flows to the supply terminals, not to the other
switch terminal, which explains how both sides of a
given switch can show leakage currents of either the
same or opposite polarity.
The MAX4539/MAX4540 are multiplexers with addition-
al calibration features. Internal resistor-dividers gener-
ate accurate voltage ratios from an external voltage
reference, allowing zero- and full-scale calibration of
ADC systems as well as facilitation of system self-moni-
toring. To access the resistor-dividers, assert the CAL
pin. When CAL and ENABLE are asserted, the three
address pins select one of the various resistor-divider
or external reference outputs. The MAX4539/MAX4540
also contain a LATCH input that allows the state of the
CAL and address signals to be captured.
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.
Calibration Functions
The Gain Divider, Offset Divider, REFHI and REFLO
modes allow calibration of offset and gain errors in
ADC systems. The Gain Divider mode outputs a volt-
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-.
age ratio that is 4081/4096 of V
- V
, accu-
REFHI
REFLO
rate to 0.1/4096, or better than 15 bits. The Offset
39/MAX540
Divider mode outputs a voltage ratio that is 15/4096 of
V
- V
, also accurate to 0.1/4096. The REFHI
REFLO
REFHI
mode allows the voltage on the REFHI pin to be
switched to the output. The REFLO mode allows the
voltage on the REFLO pin to be switched to the output.
Increasing V- has no effect on the logic-level thresh-
olds, but it does increase the drive to the P-channel
switches, which reduces their on-resistance. V- also
sets the negative limit of the analog-signal voltage.
Self-Monitoring Functions
The self-monitoring functions are intended to allow an
ADC to measure its own supply voltage. The MAX4539
has an internal divide-by-two resistor string between V+
and GND that is accurate to 8 bits (16/4096). It also has
a 5/8 resistor string between V+ and V- that is also
accurate to 8 bits. This divider string allows measure-
ment of the negative supply with a unipolar ADC. GND
can also be switched to the output, eliminating the
need for an additional multiplexer channel.
The logic-level thresholds are CMOS- and TTL- com-
patible when V+ is +5V. As V+ is raised, the threshold
increases slightly; when V+ reaches +12V, the level
threshold is about 3.2V. Although that is above the TTL
output high-level minimum of 2.4V, it is still compatible
with CMOS outputs.
Bipolar-Supply Operation
The MAX4539/MAX4540 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 13V.
Applications Information
The MAX4539/MAX4540’s construction is typical of most
CMOS analog switches. There are three supply pins:
V+, V-, and GND. The positive and negative power sup-
plies provide drive to the internal CMOS switches and
set the limits of the analog voltage on any switch.
Reverse-biased 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-.
Note: Do not connect the MAX4539/MAX4540 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, which will
cause damage to the part and/or external circuits.
Caution: The absolute maximum V+ to V- differential
voltage is 13V. Typical “±6-Volt” or “12-Volt” sup-
plies with ±10% tolerances can be as high as 13.2V.
This voltage can damage the MAX4539/MAX4540.
Even ±5% tolerance supplies may have overshoot
or noise spikes that exceed 13V.
Virtually all the analog-leakage current is through the
ESD diodes. Although the ESD diodes on a given sig-
nal pin are identical, and therefore fairly well bal-
anced, they are reverse-biased differently. Each is
12 ______________________________________________________________________________________
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
39/MAX540
the internal dividers connected between the supplies
may inadvertently turn on, causing higher supply current
(~200µA supply current) when the enable input is tog-
gled. Avoid this condition by ensuring that EN pin stays
low until the remaining logic inputs are valid. To accom-
plish this, connect a resistor from EN to ground or apply
a low voltage to EN before the other logic inputs go high.
Single-Supply Operation
The MAX4539/MAX4540 operate from a single supply
between +2.7V and +12V when V- is connected to
GND. All of the bipolar precautions must be observed.
However, these parts are optimized for 5V operation,
and most AC and DC characteristics are degraded sig-
nificantly when departing from 5V. As the overall sup-
ply voltage (V+ to V-) is lowered, switching speed,
on-resistance, off isolation, and distortion will degrade.
(see the Typical Operating Characteristics section).
Power Off
When power to the MAX4539/MAX4540 is off (i.e., V+ =
V- = 0), the Absolute Maximum Ratings still apply. This
means that neither logic-level inputs on NO_ nor sig-
nals on COM_ can exceed 0.3V. Voltages beyond
0.3V cause the internal ESD-protection diodes to con-
duct, and the parts can be damaged if excessive cur-
rent flows.
Single-supply operation also limits signal levels and
interferes with ground referenced signals. When V- = 0,
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 Up
During power up, on-chip latches will strobe whatever
addresses are present if EN goes high before LATCH
reaches a logic high. When this condition occurs, one of
Chip Information
TRANSISTOR COUNT: 561
Test Circuits/Timing Diagrams
+5V
V+
NO1
EN
LATCH
CAL
V+
+3V
-3V
NO2–NO7
A0
MAX4539
NO8
t < 20ns
R
t < 20ns
F
A1
A2
V
COM
LOGIC
INPUT
EN
V+
0V
COM
50%
50%
GND
V-
35pF
V
50Ω
300Ω
-5V
V
, V
NO1 NO1B
90%
SWITCH
OUTPUT
COM
V
0V
+5V
V+
90%
V
, V
NO8 NO4B
NO1B
V+
EN
LATCH
CAL
+3V
-3V
NO2B–NO3B
NO1A–NO2A
t
t
TRANS
TRANS
A0
A1
NO4B
MAX4540
COMB
V-
V
COM
GND
35pF
300Ω
50Ω
-5V
Figure 1. Transition Time
______________________________________________________________________________________ 13
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
Test Circuits/Timing Diagrams (continued)
+5V
V+
t
t
< 20ns
< 20ns
R
F
V+
EN
V+
0V
LOGIC
INPUT
A
50%
50%
LATCH
NO1–NO8
+3V
V
CAL
A0
MAX4539
0.8V
NO_
V
A
90%
A1
A2
COM
V
COM
SWITCH
OUTPUT
COM
GND
V-
50Ω
35pF
V
300Ω
t
OPEN
0V
-5V
+5V
V+
t
t
< 20ns
< 20ns
V+
R
F
EN
V+
0V
LOGIC
INPUT
50%
50%
LATCH
NO1A–NO4B
NO1B–NO4B
+3V
39/MAX540
V
A
CAL
A0
A1
MAX4540
0.8V
NO_
V
A
90%
90%
COMA
V-
V
SWITCH
OUTPUT
COM
GND
50Ω
35pF
V
COM
300Ω
t
OPEN
0V
-5V
Figure 2. Break-Before-Make Interval
+5V
V+
V
EN
EN
NO1
NO2–NO8
+3V
LATCH
CAL
t
t
< 20ns
< 20ns
R
F
V+
0V
V
EN
50%
50%
A0
A1
MAX4539
COM
V
COM
A2 GND
V-
50Ω
35pF
300Ω
0.8(V , V
)
NO1 NO1B
V
COM
-5V
+5V
V+
90% 90%
V
EN
EN
NO1B
+3V
NO2B–NO4B
NO1A–NO4A
LATCH
CAL
0V
t
t
ON
OFF
A0
MAX4540
A1
COMB
V-
V
COM
GND
50Ω
35pF
300Ω
-5V
Figure 3. Enable Switching Time
14 ______________________________________________________________________________________
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
39/MAX540
Test Circuits/Timing Diagrams (continued)
+5V
V+
R
S
NO_
EN
V+
LOGIC
ON
OFF
ON
INPUT
0V
V
EN
V
MAX4539
S
A0
A1
A2
CHANNEL
SELECT
COM
V
COM
∆V
OUT
CAL
LATCH
C = 1nF
L
V
COM
GND
V-
-5V
∆V IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER
OUT
ERROR Q WHEN THE CHANNEL TURNS OFF.
Q = ∆V x C
OUT
L
+5V
V+
R
S
NO_
EN
V+
0V
LOGIC
INPUT
EN
ON
OFF
ON
V
MAX4540
V
S
A0
A1
CHANNEL
SELECT
COMA
V _
COM
∆V
OUT
CAL
LATCH
C = 1nF
L
V
COM
GND
V-
-5V
∆V IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER
OUT
ERROR Q WHEN THE CHANNEL TURNS OFF.
Q = ∆V x C
OUT
L
Figure 4. Charge Injection
+5V
V+
10nF
NETWORK
ANALYZER
V
V
OUT
OFF ISOLATION = 20log
CROSSTALK = 20log
V
IN
IN
50Ω
50Ω
V+
EN
NO_
V
OUT
MAX4539
MAX4540
V
IN
V
COM
V+
MEAS.
REF
COM_
A
GND
LATCH CAL V-
50Ω
50Ω
10nF
+5V
NOTES: MEASUREMENTS ARE STANDARDIZED AGAINST SHORT AT SOCKET TERMINALS.
OFF-ISOLATION IS MEASURED BETWEEN COM AND “OFF” TERMINAL ON EACH SWITCH.
ON LOSS IS MEASURED BETWEEN COM AND “ON” TERMINAL ON EACH SWITCH.
Figure 5. Off-Isolation/Crosstalk
______________________________________________________________________________________ 15
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
Test Circuits/Timing Diagrams (continued)
+5V
V+
+5V
V+
A2
A1
A0
NO1
NO8
NO1A
NO4A
1MHz
CAPACITANCE
ANALYZER
1MHz
CAPACITANCE
ANALYZER
CHANNEL
SELECT
A1
A0
MAX4539
MAX4540
CHANNEL
SELECT
COM
COMA
f = 1MHz
f = 1MHz
CAL,
GND
CAL, LATCH,
GND
LATCH,
EN
V-
EN
V-
-5V
-5V
Figure 6. NO_/COM_ Capacitance
39/MAX540
V+
LATCH
50%
50%
EN
V+
LATCH
+3V
NO2
NO1, NO3-NO8
A0
A1
A2
50%
EN
MAX4539
CAL
t
ES
COM
GND
V-
Figure 8. Enable Setup Time
V-
LATCH
t
MPW
50%
50%
t
H
t
S
ADDRESS (A_)
V
IH
V
IL
Figure 7. Setup Time, Hold Time, Latch Pulse Width
16 ______________________________________________________________________________________
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
39/MAX540
Pin Configurations/Functional Diagrams (continued)
V+
GND
V-
1
2
3
20
19
18
17
LATCH
EN
CAL
MAX4540
15R
LOGIC
DECODER
4
REFHI
A0
16
A1
4081R
4081R
15R
5
15
REFLO
COMA
NO1A
NO2A
COMB
6
14
13
12
7
NO4B
NO3B
NO2B
NO1B
8
9
10
NO3A
NO4A
11
______________________________________________________________________________________ 17
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
Package Information
39/MAX540
18 ______________________________________________________________________________________
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
39/MAX540
Package Information (continued)
______________________________________________________________________________________ 19
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
Package Information (continued)
39/MAX540
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.
20 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 1999 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
相关型号：
MAX4539EAP-T
Single-Ended Multiplexer, 1 Func, 8 Channel, CMOS, PDSO20, 5.30 MM, 0.65 MM PITCH, SSOP-20
MAXIM
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