19-4780; Rev 1; 6/99
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
General Description
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.
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
A
= +25°C and 2nA at T
A
= +85°C.
The MAX4539/MAX4540 are available in small 20-pin
DIP, SO, and SSOP packages.
Features
o
On-Chip Gain and Offset Divider Networks
Provide 15-Bit Accurate Output Ratios
o
On-Chip V+ to GND and V+ to V- Divider Networks
Provide 8-Bit Accurate Output Ratios
o
R
ON
: 100Ω max
o
R
ON
Matching Between Channels: 6Ω max
o
Charge Injection: 5pC max
o
Low 0.1nA Off Leakage Current
o
Small 20-Pin SSOP/SO/DIP Packages
MAX4539/MAX4540
Pin Configurations/
_______________Functional Diagrams
V+
1
3R
MAX4539
R2
LOGIC
DECODER
20
19
18
17
16
LATCH
EN
CAL
A0
A1
A2
Applications
Battery-Operated Equipment
Data-Acquisition Systems
Test Equipment
Avionics
Audio-Signal Routing
Networking
GND
V-
REFHI
2
3
4
15R1
4081R1
5R
R2
15
Ordering Information
PART
MAX4539CAP
MAX4539CWP
MAX4539CPP
MAX4539EAP
MAX4539EWP
MAX4539EPP
MAX4540CAP
MAX4540CWP
MAX4540CPP
MAX4540EAP
MAX4540EWP
MAX4540EPP
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
20 Wide SO
20 Plastic DIP
20 SSOP
20 Wide SO
20 Plastic DIP
20 SSOP
20 Wide SO
20 Plastic DIP
20 SSOP
20 Wide SO
20 Plastic DIP
15R1
4081R1
REFLO
COM
NO1
NO2
NO3
NO4
5
6
7
8
9
10
14
13
12
11
NO8
NO7
NO6
NO5
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
MAX4539/MAX4540
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_
(pulsed at 1ms, 10% duty cycle max) ...........................±40mA
Continuous Power Dissipation (T
A
= +70°C)
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
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
(V+ = +5V ±10%, V- = -5V ±10%, V
IH
= 2.4V, V
IL
= 0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values at T
A
= +25°C.)
(Note 2)
PARAMETER
SWITCH
Analog-Signal Range
On-Resistance
On-Resistance Matching
Between Channels
(Note 4)
On-Resistance Flatness
(Note 5)
NO-Off Leakage Current
(Note 6)
V
COM_
,
V
NO_
R
ON
∆R
ON
(Note 3)
I
COM_
= 1mA, V
NO_
= ±3.0V,
V+ = 4.5V, V- = -4.5V
I
COM_
= 1mA, V
NO_
= ±3.0V,
V+ = 4.5V, V- = -4.5V
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
7
-0.1
-2
-0.2
-10
-0.1
-5
-0.2
-10
-0.1
-5
0.01
0.01
0.01
0.01
0.01
1
V-
45
V+
75
100
4
6
10
13
0.1
2
0.2
10
0.1
5
0.2
10
0.1
5
nA
nA
Ω
nA
V
Ω
Ω
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
R
FLAT
I
NO(OFF)
I
COM_
= 1mA; V
NO_
= -3V, 0, +3V; T
A
= +25°C
V+ = 4.5V; V- = -4.5V
T
A
= T
MIN
to T
MAX
T
A
= +25°C
V
COM_
= ±4.5V, V
NO_
= 4.5V,
V+ = 5.5V, V- = -5.5V
T
A
= T
MIN
to T
MAX
MAX4539
MAX4540
MAX4539
MAX4540
±
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
±
COM-Off Leakage
Current (Note 6)
V
COM_
= ±4.5V,
V
NO_
= 4.5V,
I
COM_(OFF)
V+ = 5.5V,
V- = -5.5V
V
COM_
= ±4.5V,
V
NO_
= ±4.5V,
I
COM_(ON)
V+ = 5.5V,
V- = -5.5V
COM-On Leakage
Current (Note 6)
2
_______________________________________________________________________________________
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)
(V+ = +5V ±10%, V- = -5V ±10%, V
IH
= 2.4V, V
IL
= 0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values at T
A
= +25°C.)
(Note 2)
PARAMETER
LOGIC INPUTS
Input High Voltage
Input Low Voltage
Input Current with Input
Voltage High
Input Current with Input
Voltage Low
SUPPLY
Power-Supply Range
Positive Supply Current
I+
V
EN
= V
A_
= V
LATCH
= V
CAL
= 0
or V+, V+ = 5.5V, V- = -5.5V
(Note 7)
V
EN
= V
A_
= V
LATCH
= V
CAL
= 0
or V+, V+ = 5.5V, V- = -5.5V
(Note 7)
V
EN
= V
A_
= V
LATCH
= V
CAL
= 0
or V+, V+ = 5.5V, V- = -5.5V
(Note 7)
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
±2.7
-1
-5
-1
-5
-1
-5
0.01
0.01
0.01
±6
1
µA
5
1
µA
5
1
µA
5
V
V
IH
V
IL
I
IH
I
IL
V
EN
= V
A_
= V
LATCH
= V
CAL
= V+
V
EN
= V
A_
= V
LATCH
= V
CAL
= 0
-0.1
-0.1
2.4
1.7
1.4
0.01
0.01
0.8
0.1
0.1
V
V
µA
µA
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX4539/MAX4540
Negative Supply Current
I-
GND Supply Current
I
GND
DYNAMIC CHARACTERISTICS
Transition Time
Break-Before-Make
Interval (Note 3)
Enable Turn-On Time
Enable Turn-Off Time
Charge Injection
(Note 3)
Off-Isolation (Note 8)
Crosstalk Between
Channels (Note 9)
Logic Input Capacitance
NO-Off Capacitance
COM-Off Capacitance
COM-On Capacitance
t
TRANS
t
OPEN
t
ON
t
OFF
V
CTE
V
ISO
V
CT
C
IN
C
OFF
C
COM_(OFF)
C
COM_(ON)
Figure 1
Figure 2
Figure 3
Figure 3
C
L
= 1nF, V
NO_
= 0, Figure 4
V
EN
= 0, f = 1MHz, Figure 5
V
EN
= 2.4V, f = 1MHz,
V
GEN
= 1Vp-p, Figure 5
f = 1MHz
f = 1MHz, V
EN
= V
COM_
= 0,
Figure 6
f = 1MHz, V
EN
= V
COM_
= 0,
Figure 6
f = 1MHz, V
EN
= 2.4V,
V
COM_
= 0, Figure 6
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
1
-75
-75
15
3
15
26
50
4
1
75
115
175
100
120
5
10
100
150
200
ns
ns
ns
ns
pC
dB
dB
pF
pF
pF
pF
_______________________________________________________________________________________
3
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
MAX4539/MAX4540
ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)
(V+ = +5V ±10%, V- = -5V ±10%, V
IH
= 2.4V, V
IL
= 0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values at T
A
= +25°C.)
(Note 2)
PARAMETER
LATCH TIMING
(Note 3)
Setup Time
Hold Time
Pulse Width, Latch
Enable
Enable Setup Time
INTERNAL DIVIDERS
V
REF
= 4.096V,
REFHI = 4.096V,
REFLO = GND
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
14.9/
4096
14.9/
4096
4080.9/
4096
15/
4096
15/
4096
4081/
4096
4081/
4096
2048/
4096
2048/
4096
2560/
4096
2560/
4096
400
400
6
6
400
V+ /
24k
15.1/
4096
LSB
15.1/
4096
4081.1/
4096
LSB
4080.9/
T
A
= T
MIN
to T
MAX
4096
T
A
= +25°C
(V+ / 2) Divider Output
Referenced to GND
T
A
= T
MIN
to T
MAX
T
A
= +25°C
(V+ - V-) Divider Output
Referenced to V-
T
A
= T
MIN
to T
MAX
Output Resistance Offset
Divider
Output Resistance Gain
Divider
Output Resistance
(V+ / 2) Divider
Output Resistance
(V+ - V-) Divider
Output Resistance
(REFHI, REFLO, GND)
Additional Positive Supply
Current
(Note 3)
(Note 3)
(Note 3)
(Note 3)
(Note 3)
(V+ / 2) divider active,
V
IH
= V+, V
IL
= 0 (Note 3)
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
2544/
4096
2576/
4096
800
800
9
9
800
V+ /
13k
Ω
Ω
kΩ
kΩ
Ω
mA
2032/
4096
2544/
4096
2064/
4096
2576/
4096
LSB
2032/
4096
4081.1/
4096
2064/
4096
LSB
t
S
t
H
t
MPW
t
ES
Figure 7
Figure 7
Figure 7
Figure 8
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
-10
-10
30
40
15
30
40
15
0
45
70
80
ns
ns
ns
ns
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Offset Divider Output
Gain Divider Output
V
REF
= 4.096V,
REFHI = 4.096V,
REFLO = GND
4
_______________________________________________________________________________________
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)
(V+ = +5V ±10%, V- = -5V ±10%, V
IH
= 2.4V, V
IL
= 0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values at T
A
= +25°C.)
(Note 2)
PARAMETER
Additional Positive Supply
Current (Note 3)
Additional Negative
Supply Current
REFHI, REFLO Input
Range (Note 3)
Input Resistance
(REFHI, REFLO) (Note 3)
Offset divider active,
gain divider active
T
A
= +25°C
SYMBOL
CONDITIONS
(V+ - V-) divider active,
V
IH
= V+, V
IL
= 0
(V+ - V-) divider active,
V
IH
= V+, V
IL
= 0 (Note 3)
T
A
= +25°C
T
A
= +25°C
V-
- 0.3
25
40
MIN
TYP
MAX
UNITS
mA
mA
V
kΩ
MAX4539/MAX4540
(V+ - V-)/ (V+ - V-)/
24k
13k
(V+ - V-)/ (V+ - V-)/
24k
13k
V+
+ 0.3
ELECTRICAL CHARACTERISTICS—Single +5V Supply
(V+ = +5V ±10%, V- = 0, V
IH
= 2.4V, V
IL
= 0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values at T
A
= +25°C.) (Note 2)
PARAMETER
SWITCH
Analog-Signal Range
On-Resistance
On-Resistance Matching
Between Channels
(Notes 3, 4)
On-Resistance Flatness
(Note 5)
NO-Off Leakage Current
(Notes 6, 10)
V
NO_
,
V
COM_
R
ON
∆R
ON
(Note 3)
I
COM_
= 1mA, V
NO_
= 3.0V,
V+ = 4.5V
I
COM_
= 1mA, V
NO_
= 3.0V,
V+ = 4.5V
I
COM_
= 1mA; V
NO_
= 3V, 2V, 1V;
V+ = 4.5V
V
COM_
= 1V, 4.5V;
V
NO_
= 4.5V, 1V; V+ = 5.5V
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
-0.1
-2
-0.2
-10
-0.1
-5
-0.2
-10
-0.1
-5
8
0.1
2
0.2
10
0.1
5
0.2
10
0.1
5
nA
nA
2
0
80
V+
150
200
8
12
Ω
nA
V
Ω
Ω
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
R
FLAT
I
NO(OFF)
COM-Off Leakage
Current (Notes 6, 10)
V
COM_
= 4.5V, 1V; MAX4539
I
COM_(OFF)
V
NO_
= 1V, 4.5V;
V+ = 5.5V
MAX4540
MAX4539
MAX4540
COM-On Leakage
Current (Notes 6, 10)
V
COM_
= 4.5V,
I
COM_(ON)
V
NO_
= 4.5V,
V+ = 5.5V
_______________________________________________________________________________________
5
Embedded System
京公网安备 11010802033920号
EEWORLD
