MAXIM MAX4540CWP

19-4780; Rev 1; 6/99
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
Features
♦ On-Chip Gain and Offset Divider Networks
Provide 15-Bit Accurate Output Ratios
♦ On-Chip V+ to GND and V+ to V- Divider Networks
Provide 8-Bit Accurate Output Ratios
♦ RON: 100Ω max
♦ RON Matching Between Channels: 6Ω max
♦ Charge Injection: 5pC max
♦ Low 0.1nA Off Leakage Current
♦ Small 20-Pin SSOP/SO/DIP Packages
Pin Configurations/
_______________Functional Diagrams
V+
1
20
MAX4539
19
3R
R2
LOGIC
DECODER
18
17
16
Applications
Battery-Operated Equipment
Avionics
Data-Acquisition Systems
Audio-Signal Routing
Test Equipment
Networking
15
GND
VREFHI
TEMP. RANGE
R2
15R1
4081R1
EN
CAL
A0
A1
A2
2
3
4
Ordering Information
PART
5R
LATCH
PIN-PACKAGE
MAX4539CAP
0°C to +70°C
MAX4539CWP
MAX4539CPP
MAX4539EAP
MAX4539EWP
MAX4539EPP
MAX4540CAP
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
20 SSOP
20 Wide SO
20 Plastic DIP
20 SSOP
20 Wide SO
20 Plastic DIP
20 SSOP
MAX4540CWP
MAX4540CPP
MAX4540EAP
MAX4540EWP
MAX4540EPP
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
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.
MAX4539/MAX4540
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 selfmonitoring 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 switches to 6Ω max. Each switch can handle Rail-to-Rail®
analog signals. The off leakage current is 0.1nA at
TA = +25°C and 2nA at TA = +85°C.
The MAX4539/MAX4540 are available in small 20-pin
DIP, SO, and SSOP packages.
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 (TA = +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%, VIH = 2.4V, VIL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values at TA = +25°C.)
(Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V+
V
SWITCH
Analog-Signal Range
VCOM_,
VNO_
(Note 3)
V-
RON
ICOM_ = 1mA, VNO_ = ±3.0V,
V+ = 4.5V, V- = -4.5V
TA = +25°C
On-Resistance Matching
Between Channels
(Note 4)
∆RON
ICOM_ = 1mA, VNO_ = ±3.0V,
V+ = 4.5V, V- = -4.5V
TA = +25°C
On-Resistance Flatness
(Note 5)
RFLAT
NO-Off Leakage Current
(Note 6)
INO(OFF)
COM-Off Leakage
Current (Note 6)
COM-On Leakage
Current (Note 6)
2
45
TA = TMIN to TMAX
VCOM_ = ±4.5V, VNO_ = 4.5V,
V+ = 5.5V, V- = -5.5V
1
TA = TMIN to TMAX
VCOM_ = ±4.5V,
VNO_ = 4.5V,
ICOM_(OFF)
V+ = 5.5V,
V- = -5.5V
MAX4539
VCOM_ = ±4.5V,
VNO_ = ±4.5V,
ICOM_(ON)
V+ = 5.5V,
V- = -5.5V
MAX4539
MAX4540
MAX4540
TA = +25°C
TA = TMIN to TMAX
TA = +25°C
7
10
13
-0.1
0.01
-2
-0.2
-10
TA = +25°C
-0.1
-0.2
TA = TMIN to TMAX
-10
TA = +25°C
-0.1
0.1
2
0.01
0.2
0.01
0.1
10
-5
TA = +25°C
TA = TMIN to TMAX
4
Ω
Ω
6
TA = TMIN to TMAX
TA = TMIN to TMAX
75
100
ICOM_ = 1mA; VNO_ = -3V, 0, +3V; TA = +25°C
V+ = 4.5V; V- = -4.5V
TA = TMIN to TMAX
±
On-Resistance
±
MAX4539/MAX4540
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
Ω
nA
nA
5
0.01
0.2
0.01
0.1
10
-5
_______________________________________________________________________________________
5
nA
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
(V+ = +5V ±10%, V- = -5V ±10%, VIH = 2.4V, VIL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values at TA = +25°C.)
(Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
LOGIC INPUTS
Input High Voltage
VIH
Input Low Voltage
VIL
2.4
Input Current with Input
Voltage High
IIH
VEN = VA_ = VLATCH = VCAL = V+
Input Current with Input
Voltage Low
IIL
VEN = VA_ = VLATCH = VCAL = 0
1.7
V
1.4
0.8
V
-0.1
0.01
0.1
µA
-0.1
0.01
0.1
µA
±6
V
SUPPLY
Power-Supply Range
Positive Supply Current
Negative Supply Current
GND Supply Current
±2.7
I+
I-
IGND
VEN = VA_ = VLATCH = VCAL = 0
or V+, V+ = 5.5V, V- = -5.5V
(Note 7)
TA = +25°C
-1
TA = TMIN to TMAX
-5
VEN = VA_ = VLATCH = VCAL = 0
or V+, V+ = 5.5V, V- = -5.5V
(Note 7)
TA = +25°C
-1
TA = TMIN to TMAX
-5
VEN = VA_ = VLATCH = VCAL = 0
or V+, V+ = 5.5V, V- = -5.5V
(Note 7)
TA = +25°C
-1
TA = TMIN to TMAX
-5
0.01
1
µA
5
0.01
1
µA
5
0.01
1
µA
5
DYNAMIC CHARACTERISTICS
TA = +25°C
100
150
Transition Time
tTRANS
Figure 1
Break-Before-Make
Interval (Note 3)
tOPEN
Figure 2
Enable Turn-On Time
tON
Figure 3
Enable Turn-Off Time
tOFF
Figure 3
Charge Injection
(Note 3)
VCTE
CL = 1nF, VNO_ = 0, Figure 4
TA = +25°C
1
Off-Isolation (Note 8)
VISO
VEN = 0, f = 1MHz, Figure 5
TA = +25°C
-75
dB
Crosstalk Between
Channels (Note 9)
VCT
VEN = 2.4V, f = 1MHz,
VGEN = 1Vp-p, Figure 5
TA = +25°C
-75
dB
Logic Input Capacitance
CIN
f = 1MHz
TA = +25°C
15
pF
COFF
f = 1MHz, VEN = VCOM_ = 0,
Figure 6
TA = +25°C
3
pF
COM-Off Capacitance
CCOM_(OFF)
f = 1MHz, VEN = VCOM_ = 0,
Figure 6
TA = +25°C
15
pF
COM-On Capacitance
CCOM_(ON)
f = 1MHz, VEN = 2.4V,
VCOM_ = 0, Figure 6
TA = +25°C
26
pF
NO-Off Capacitance
TA = TMIN to TMAX
200
TA = +25°C
4
TA = TMIN to TMAX
1
TA = +25°C
10
75
TA = TMIN to TMAX
TA = +25°C
ns
115
175
50
TA = TMIN to TMAX
ns
100
120
5
ns
ns
pC
_______________________________________________________________________________________
3
MAX4539/MAX4540
ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)
MAX4539/MAX4540
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)
(V+ = +5V ±10%, V- = -5V ±10%, VIH = 2.4V, VIL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values at TA = +25°C.)
(Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
45
70
UNITS
LATCH TIMING (Note 3)
Setup Time
tS
Figure 7
Hold Time
tH
Figure 7
Pulse Width, Latch
Enable
tMPW
Figure 7
Enable Setup Time
tES
Figure 8
TA = +25°C
TA = TMIN to TMAX
80
TA = +25°C
-10
TA = TMIN to TMAX
-10
TA = +25°C
30
TA = TMIN to TMAX
40
TA = +25°C
0
ns
15
15
TA = TMIN to TMAX
ns
ns
30
40
ns
INTERNAL DIVIDERS
Offset Divider Output
Gain Divider Output
(V+ / 2) Divider Output
(V+ - V-) Divider Output
VREF = 4.096V,
REFHI = 4.096V,
REFLO = GND
VREF = 4.096V,
REFHI = 4.096V,
REFLO = GND
TA = +25°C
14.9/
4096
15/
4096
15.1/
4096
TA = TMIN to TMAX
14.9/
4096
15/
4096
15.1/
4096
TA = +25°C
4080.9/
4096
4081/
4096
4081.1/
4096
TA = TMIN to TMAX
4080.9/
4096
4081/
4096
4081.1/
4096
TA = +25°C
2032/
4096
2048/
4096
2064/
4096
TA = TMIN to TMAX
2032/
4096
2048/
4096
2064/
4096
TA = +25°C
2544/
4096
2560/
4096
2576/
4096
TA = TMIN to TMAX
2544/
4096
2560/
4096
2576/
4096
LSB
LSB
Referenced to GND
LSB
Referenced to V-
LSB
Output Resistance Offset
Divider
(Note 3)
TA = +25°C
400
800
Ω
Output Resistance Gain
Divider
(Note 3)
TA = +25°C
400
800
Ω
Output Resistance
(V+ / 2) Divider
(Note 3)
TA = +25°C
6
9
kΩ
Output Resistance
(V+ - V-) Divider
(Note 3)
TA = +25°C
6
9
kΩ
Output Resistance
(REFHI, REFLO, GND)
(Note 3)
TA = +25°C
400
800
Ω
Additional Positive Supply
Current
(V+ / 2) divider active,
VIH = V+, VIL = 0 (Note 3)
TA = +25°C
V+ /
24k
V+ /
13k
mA
4
_______________________________________________________________________________________
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
(V+ = +5V ±10%, V- = -5V ±10%, VIH = 2.4V, VIL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values at TA = +25°C.)
(Note 2)
PARAMETER
SYMBOL
CONDITIONS
Additional Positive Supply
Current (Note 3)
(V+ - V-) divider active,
VIH = V+, VIL = 0
Additional Negative
Supply Current
(V+ - V-) divider active,
VIH = V+, VIL = 0 (Note 3)
MIN
TYP
mA
TA = +25°C
(V+ - V-)/ (V+ - V-)/
24k
13k
mA
V- 0.3
Offset divider active,
gain divider active
UNITS
TA = +25°C
REFHI, REFLO Input
Range (Note 3)
Input Resistance
(REFHI, REFLO) (Note 3)
MAX
(V+ - V-)/ (V+ - V-)/
24k
13k
TA = +25°C
25
V+
+ 0.3
40
V
kΩ
ELECTRICAL CHARACTERISTICS—Single +5V Supply
(V+ = +5V ±10%, V- = 0, VIH = 2.4V, VIL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values at TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V+
V
SWITCH
Analog-Signal Range
VNO_,
VCOM_
(Note 3)
0
RON
ICOM_ = 1mA, VNO_ = 3.0V,
V+ = 4.5V
TA = +25°C
On-Resistance Matching
Between Channels
(Notes 3, 4)
∆RON
ICOM_ = 1mA, VNO_ = 3.0V,
V+ = 4.5V
TA = +25°C
On-Resistance Flatness
(Note 5)
RFLAT
NO-Off Leakage Current
(Notes 6, 10)
INO(OFF)
On-Resistance
COM-Off Leakage
Current (Notes 6, 10)
COM-On Leakage
Current (Notes 6, 10)
ICOM_ = 1mA; VNO_ = 3V, 2V, 1V;
V+ = 4.5V
VCOM_ = 1V, 4.5V;
VNO_ = 4.5V, 1V; V+ = 5.5V
VCOM_ = 4.5V, 1V; MAX4539
ICOM_(OFF) VNO_ = 1V, 4.5V;
V+ = 5.5V
MAX4540
VCOM_ = 4.5V,
ICOM_(ON) VNO_ = 4.5V,
V+ = 5.5V
MAX4539
MAX4540
80
TA = TMIN to TMAX
200
2
TA = TMIN to TMAX
8
0.1
-2
2
TA = +25°C
-0.2
0.2
TA = TMIN to TMAX
-10
10
TA = +25°C
-0.1
0.1
TA = TMIN to TMAX
TA = +25°C
-5
5
-0.2
0.2
TA = TMIN to TMAX
-10
10
TA = +25°C
-0.1
0.1
-5
5
TA = TMIN to TMAX
Ω
Ω
8
-0.1
TA = TMIN to TMAX
Ω
12
TA = +25°C
TA = TMIN to TMAX
TA = +25°C
150
nA
nA
nA
_______________________________________________________________________________________
5
MAX4539/MAX4540
ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)
MAX4539/MAX4540
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
ELECTRICAL CHARACTERISTICS—Single +5V Supply (continued)
(V+ = +5V ±10%, V- = 0, VIH = 2.4V, VIL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values at TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
LOGIC INPUTS (Note 3)
Input High Voltage
VIH
Input Low Voltage
VIL
2.4
Input Current with
Input Voltage High
IIH
VEN = VA_ = VLATCH = VCAL = V+
Input Current with
Input Voltage Low
IIL
VEN = VA_ = VLATCH = VCAL = 0
1.6
1.4
V
0.8
V
-0.1
0.1
µA
-0.1
0.1
µA
2.7
12
V
SUPPLY
Power-Supply Range
Positive Supply Current
(Note 3)
GND Supply Current
(Note 3)
I+
IGND
VEN = VA_ = VLATCH = VCAL = 0
or V+, V+ = 5.5V
TA = +25°C
-1
TA = TMIN to TMAX
-5
VEN = VA_ = VLATCH = VCAL = 0
or V+, V+ = 5.5V
TA = +25°C
-1
TA = TMIN to TMAX
-10
0.01
1
µA
5
0.01
1
10
µA
DYNAMIC CHARACTERISTICS (Note 3)
Transition Time
tTRANS
Figure 1
Break-Before-Make
Interval
tOPEN
Figure 2
Enable Turn-On Time
tON
Figure 3
Enable Turn-Off Time
tOFF
Figure 3
Charge Injection
VCTE
CL = 1nF, VNO_ = 0, Figure 4
TA = +25°C
150
TA = TMIN to TMAX
200
250
TA = +25°C
4
TA = TMIN to TMAX
1
TA = +25°C
10
115
TA = TMIN to TMAX
ns
150
200
TA = +25°C
60
TA = TMIN to TMAX
100
130
TA = +25°C
1
ns
5
ns
ns
pC
LATCH TIMING (Note 3)
Setup Time
tS
Figure 7
Hold Time
tH
Figure 7
Pulse Width, Latch
Enable
tMPW
Figure 7
Enable Setup Time
tES
Figure 8
6
TA = +25°C
70
TA = TMIN to TMAX
80
TA = +25°C
-10
TA = TMIN to TMAX
-10
TA = +25°C
30
TA = TMIN to TMAX
40
TA = +25°C
0
ns
15
15
TA = TMIN to TMAX
_______________________________________________________________________________________
ns
ns
30
40
ns
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
(V+ = +2.7V to +3.6V, V- = 0, VIH = 2.4V, VIL = 0.5V, TA = TMIN to TMAX, unless otherwise noted. Typical values at TA = +25°C.)
(Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V+
V
SWITCH
Analog-Signal Range
On-Resistance
VCOM_
RON
(Note 3)
ICOM_ = 0.2mA, VNO_ = 1.5V,
V+ = 2.7V
0
TA = +25°C
220
TA = TMIN to TMAX
500
Ω
600
LOGIC INPUTS (Note 3)
Input High Voltage
VIH
Input Low Voltage
VIL
2.4
1.1
V
1.1
0.5
V
DYNAMIC (Note 3)
Transition Time
tTRANS
VNO1 = 1.5V, VNO8 = 0,
Figure 1
TA = +25°C
260
400
ns
Enable Turn-On Time
tON
VNO1 = 1.5V, Figure 3
TA = +25°C
220
350
ns
Enable Turn-Off Time
tOFF
VNO = 1.5V, Figure 3
TA = +25°C
100
150
ns
100
ns
LATCH TIMING (Note 3)
Setup Time
tS
Figure 7
TA = +25°C
Hold Time
tH
Figure 7
TA = +25°C
-10
Pulse Width, Latch
Enable
tMPW
Figure 7
TA = +25°C
40
Enable Setup Time
tES
Figure 8
TA = +25°C
0
ns
ns
50
ns
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: ∆RON = RON(MAX) - RON(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 100% tested at maximum-rated hot temperature and guaranteed by correlation at TA = +25°C.
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 = 20log10 (VCOM/VNO), VCOM = output, VNO = input to off switch.
Note 9: Between any two switches.
Note 10: Leakage testing with a single supply is guaranteed by testing with dual supplies.
_______________________________________________________________________________________
7
MAX4539/MAX4540
ELECTRICAL CHARACTERISTICS—Single +3V Supply
Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
ON-RESISTANCE vs. VCOM AND TEMPERATURE
(SINGLE SUPPLY)
COM(ON)
10p
40
60
TA = +25°C
50
TA = -40°C
TA = +25°C
20
10
V+ = 5V
V- = 0
10
0
10f
0
20
40
60
80
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
VCOM (V)
ON-RESISTANCE vs. VCOM
(DUAL SUPPLIES)
ON-RESISTANCE vs. VCOM
(SINGLE SUPPLY)
150
80
130
RON (Ω)
90
V+ = 2.7V
V- = -2.7V
70
V+ = 3V
V- = -3V
60
V- = 0
V+ = 2.7V
170
V+ = 5V
V- = -5V
V+ = 3V
110
-4
-3
-2
-1
0
1
2
3
4
1
2
3
4
5
6
7
8
9
140
5
0.1p
10
-40 -20
0
20
40
60
80 100 120 140
TEMPERATURE (°C)
CHARGE INJECTION vs. VCOM
10
MAX4539-08
MAX4539-07
80
4
I-
ON/OFF TIME vs. TEMPERATURE
ON/OFF TIME vs. SUPPLY VOLTAGE
160
3
V+ = 5V
V- = -5V
VCOM (V)
100
2
1p
V+ = 10V
VCOM (V)
180
1
10p
V+ = 7.5V
0
5
0
100p
30
-5
-1
10n
V+ = 5V
50
30
-2
I+
70
40
-3
1n
90
50
-4
SUPPLY CURRENT vs. TEMPERATURE
100n
I+ I- (A)
V+ = 2.4V
V- = -2.4V
-5
VCOM (V)
190
MAX4539-04
110
100
0
100 120
TEMPERATURE (°C)
V+ = 5V
V- = -5V
MAX4539-09
-20
V+ = 5V
V- = -5V
0
MAX4539-05
-40
TA = -40°C
20
30
1p
NO(OFF)
8
tON
60
tON
100
80
6
tOFF
40
Q (pC)
tON, tOFF (ns)
120
60
20
2
3
4
V+, V- (V)
5
SINGLE SUPPLY
V+ = 5V
-2
-40
0
4
0
-20
20
DUAL SUPPLIES
V+ = 5V, V- = -5V
2
0
tOFF
40
8
30
40
100f
RON (Ω)
TA = +70°C
70
COM(OFF)
100p
TA = +85°C
TA = +70°C
50
RON (Ω)
1n
RON (Ω)
LEAKAGE CURRENT (A)
80
MAX4539-03
TA = +85°C
90
60
MAX4539-02
V+ = 5V
V- = -5V
10n
100
MAX4539-01
100n
ON-RESISTANCE vs. VCOM AND TEMPERATURE
(DUAL SUPPLIES)
MAX4539-06
LEAKAGE CURRENT vs. TEMPERATURE
tON, tOFF (ns)
MAX4539/MAX4540
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
-40
-20
0
20
40
60
TEMPERATURE (°C)
80
100
-5
-4
-3
-2
-1
0
1
VCOM (V)
_______________________________________________________________________________________
2
3
4
5
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
60
ON
PHASE
20
-50
-20
-60
-60
-70
-100
OFF
ISOLATION
-80
0.1
1
10
0.01
(V+ - V-) ROUT
V+ = 5V
V- = -5V
10
100
1k
10k
-20
-40
100k
V+ = 5V
V- = -5V
80
100
2558.3
2558.2
VREFHI = 4.096V
VREFLO = 0
V+ = 5V
V- = -5V
4081.08
4081.06
OUTPUT RATIO (LSB)
2558.4
OUTPUT RATIO (LSB)
60
4081.10
MAX4539-13b
2558.5
MAX4539-13a
40
20
GAIN DIVIDER OUTPUT
vs. TEMPERATURE
(V+ - V-) DIVIDER OUTPUT
vs. TEMPERATURE
2049.5
0
TEMPERATURE (°C)
FREQUENCY (Hz)
V+ = +5V
V- = -5V
MAX4539-12
5830
5680
0.001
(V+ / 2) DIVIDER OUTPUT
vs. TEMPERATURE
OUTPUT RATIO (LSB)
5880
5730
FREQUENCY (MHz)
2050.0
5930
5780
V+ = 5V -140
V- = -5V
-180
100
1000
-90
(V+ / 2) ROUT
5980
2558.1
4081.04
MAX4539-14
-30
6030
ROUT (Ω)
100
THD (%)
-20
-40
V+ = 5V
V- = -5V
600Ω IN/OUT
VIN = 5Vp-p
140
PHASE (DEGREES)
LOSS (dB)
-10
0.1
180
INSERTION
LOSS
MAX4539-11
MAX4539-10
0
ROUT vs. TEMPERATURE
(V+ / 2 DIVIDER AND V+ - V- DIVIDER)
TOTAL HARMONIC DISTORTION
vs. FREQUENCY
FREQUENCY RESPONSE
4081.02
4081.00
4080.98
4080.96
4080.94
4080.92
20
0
40
60
80
2558.0
-40
100
4080.90
-20
OFFSET DIVIDER OUTPUT
vs. TEMPERATURE
100
-40
15.00
14.98
14.96
4081.06
15.06
4081.04
4081.02
4081.00
4080.98
4080.96
15.02
15.00
14.98
14.96
14.94
14.92
14.92
4080.90
40
60
TEMPERATURE (°C)
80
100
100
15.04
4080.92
20
80
VREFLO = 0
V+ = 5V
V- = -5V or 0
15.08
14.94
0
60
40
20
OFFSET DIVIDER OUTPUT vs. REFHI
4080.94
-20
0
15.10
OUTPUT RATIO (LSB)
15.02
14.90
-40
-20
TEMPERATURE (°C)
VREFLO = 0
V+ = 5V
V- = -5V or 0
4081.08
OUTPUT RATIO (LSB)
OUTPUT RATIO (LSB)
80
4081.10
MAX4539-15
VREFHI = 4.096V
VREFLO = 0
V+ = 5V
V- = -5V
15.06
60
GAIN DIVIDER OUTPUT vs. REFHI
15.10
15.04
40
20
TEMPERATURE (°C)
TEMPERATURE (°C)
15.08
0
MAX4539-17
-20
MAX4539-16
2049.0
-40
14.90
2.0
2.5
3.0
3.5
REFHI (V)
4.0
4.5
5.0
2.0
2.5
3.0
3.5
4.0
4.5
5.0
REFHI (V)
_______________________________________________________________________________________
9
MAX4539/MAX4540
Typical Operating Characteristics (continued)
(TA = +25°C, unless otherwise noted.)
Typical Operating Characteristics (continued)
(TA = +25°C, unless otherwise noted.)
ROUT vs. TEMPERATURE
(OFFSET DIVIDER AND GAIN DIVIDER)
2054
230
220
OFFSET DIVIDER
210
V+ = 5V
V- = -5V
VREFHI = 4.096V
VREFLO = 0
200
190
OUTPUT RATIO (LSB)
GAIN DIVIDER
OUTPUT RATIO (LSB)
2053
240
2052
2051
2050
2049
2048
-20
0
20
40
60
2555
2047
100
80
2560
2046
2550
2045
-40
2565
MAX4539-19b
2055
MAX4539-19a
250
(V+ - V-) DIVIDER OUTPUT
vs. SUPPLY VOLTAGE
(V+ / 2) DIVIDER OUTPUT
vs. SUPPLY VOLTAGE
MAX4539-18
260
ROUT (Ω)
MAX4539/MAX4540
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
TEMPERATURE (°C)
2
3
4
5
6
1
2
3
4
5
V+, V- (V)
V+, V- (V)
Pin Descriptions
MAX4539 (Single 8-to-1 Cal-Mux)
10
PIN
NAME
1
V+
2
GND
3
V-
FUNCTION
MAX4540 (Dual 4-to-1 Cal-Mux)
PIN
NAME
Positive Supply Voltage
1
V+
Ground
2
GND
Negative Supply Voltage
3
V-
FUNCTION
Positive Supply Voltage
Ground
Negative Supply Voltage
4
REFHI
Reference High Voltage Input
4
REFHI
Reference High Voltage Input
5
REFLO
Reference Low Voltage Input
5
REFLO
Reference Low Voltage Input
6
COM
Multiplexer Output
6
COMA
Multiplexer Output A
7
NO1
Channel Input 1
7
NO1A
Channel Input 1A
8
NO2
Channel Input 2
8
NO2A
Channel Input 2A
9
NO3
Channel Input 3
9
NO3A
Channel Input 3A
10
NO4
Channel Input 4
10
NO4A
Channel Input 4A
11
NO5
Channel Input 5
11
NO1B
Channel Input 1B
12
NO6
Channel Input 6
12
NO2B
Channel Input 2B
13
NO7
Channel Input 7
13
NO3B
Channel Input 3B
14
NO8
Channel Input 8
14
NO4B
Channel Input 4B
15
A2
Address Bit 2
15
COMB
Multiplexer Output B
16
A1
Address Bit 1
16
A1
Address Bit 1
17
A0
Address Bit 0
17
A0
Address Bit 0
18
CAL
Calibration Control Input
18
CAL
19
EN
Multiplexer Enable
19
EN
20
LATCH
Address Latch Control Input
20
LATCH
Calibration Control Input
Multiplexer Enable
Address Latch Control Input
______________________________________________________________________________________
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
MAX4539 (Single 8-to-1 Cal-Mux)
CAL
A2
A1
A0
EN
LATCH
COM
X
X
X
X
0
X
All switches and dividers open. COM is high-Z. Latch contents set
to all 1’s.
X
X
X
X
1
1
State is latched when LATCH is high.
0
0
0
0
1
0
NO1
0
0
0
1
1
0
NO2
0
0
1
0
1
0
NO3
0
0
1
1
1
0
NO4
0
1
0
0
1
0
NO5
0
1
0
1
1
0
NO6
0
1
1
0
1
0
NO7
0
1
1
1
1
0
NO8
1
0
0
0
1
0
(V+ / 2) Divider Mode, VCOM = 2048/4096 V+
1
0
0
1
1
0
REFHI
1
0
1
0
1
0
REFLO
1
0
1
1
1
0
(V+ - V-) Divider Mode , VCOM = 2560/4096 (V+ - V-)
1
1
0
0
1
0
GND
1
1
0
1
1
0
Gain Divider Mode, VCOM = 4081/4096 (VREFHI - VREFLO)
1
1
1
0
1
0
Offset Divider Mode, VCOM = 15/4096 (VREFHI - VREFLO)
1
1
1
1
1
0
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
X
X
X
0
X
All switches and dividers open.
COMA is high-Z.
All switches and dividers open.
COMB is high-Z.
X
X
X
1
1
State is latched
State is latched
0
0
0
1
0
NO1A
NO1B
0
0
1
1
0
NO2A
NO2B
0
1
0
1
0
NO3A
NO3B
0
1
1
1
0
NO4A
NO4B
1
0
0
1
0
GND
GND
1
0
1
1
0
Gain Divider Mode
REFLO
1
1
0
1
0
Offset Divider Mode
REFLO
0
All switches and dividers open.
COMA is high-Z.
All switches and dividers open.
COMB is high-Z.
1
1
1
1
COMA
COMB
X = Don’t care
______________________________________________________________________________________
11
MAX4539/MAX4540
Truth Tables
MAX4539/MAX4540
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
Detailed Description
The MAX4539/MAX4540 are multiplexers with additional calibration features. Internal resistor-dividers generate accurate voltage ratios from an external voltage
reference, allowing zero- and full-scale calibration of
ADC systems as well as facilitation of system self-monitoring. 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.
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 voltage ratio that is 4081/4096 of VREFHI - VREFLO, accurate to 0.1/4096, or better than 15 bits. The Offset
Divider mode outputs a voltage ratio that is 15/4096 of
VREFHI - VREFLO, also accurate to 0.1/4096. The 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.
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 measurement of the negative supply with a unipolar ADC. GND
can also be switched to the output, eliminating the
need for an additional multiplexer channel.
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 supplies 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-.
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
12
biased by either V+ or V- and the analog signal. This
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 analogsignal path leakage current. All analog-leakage current 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.
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.
V+ and GND power the internal logic and logic-level
translators and set the input-logic thresholds. The logiclevel 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, which reduces 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 3.2V. 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.
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” supplies 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.
______________________________________________________________________________________
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
the internal dividers connected between the supplies
may inadvertently turn on, causing higher supply current
(~200µA supply current) when the enable input is toggled. Avoid this condition by ensuring that EN pin stays
low until the remaining logic inputs are valid. To accomplish this, connect a resistor from EN to ground or apply
a low voltage to EN before the other logic inputs go high.
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 signals on COM_ 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.
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+
A0
A1
A2
+3V
NO2–NO7
MAX4539
NO8
-3V
VCOM
COM
GND
V-
50Ω
35pF
300Ω
-5V
LOGIC
INPUT
VEN
V+
50%
50%
0V
VNO1, VNO1B
SWITCH
OUTPUT
VCOM
+5V
tR < 20ns
tF < 20ns
90%
0V
90%
V+
V+
NO1B
NO2B–NO3B
NO1A–NO2A
+3V
MAX4540 NO4B
-3V
EN
LATCH
CAL
A0
VNO8, VNO4B
A1
GND
tTRANS
COMB
V-
VCOM
300Ω
50Ω
tTRANS
35pF
-5V
Figure 1. Transition Time
______________________________________________________________________________________
13
MAX4539/MAX4540
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 significantly when departing from ±5V. As the overall supply voltage (V+ to V-) is lowered, switching speed,
on-resistance, off isolation, and distortion will degrade.
(see the Typical Operating Characteristics section).
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.
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
MAX4539/MAX4540
Test Circuits/Timing Diagrams (continued)
+5V
V+
V+
EN
LOGIC
INPUT
VA
LATCH
NO1–NO8
CAL
A0
VA
MAX4539
A2
50%
0V
90%
COM
GND
VCOM
V35pF
300Ω
SWITCH
OUTPUT
VCOM
tOPEN
0V
-5V
+5V
V+
V+
EN
LATCH
NO1A–NO4B
NO1B–NO4B
CAL
A0
VA
LOGIC
INPUT
VA
+3V
MAX4540
A1
tR < 20ns
t < 20ns
50% F
V+
50%
0V
0.8VNO_
90%
COMA
V-
GND
50Ω
50%
tR < 20ns
tF < 20ns
0.8VNO_
A1
50Ω
+3V
V+
VCOM
35pF
300Ω
90%
SWITCH
OUTPUT
VCOM
tOPEN
0V
-5V
Figure 2. Break-Before-Make Interval
+5V
VEN
V+
EN
NO1
LATCH
CAL
+3V
NO2–NO8
VEN
MAX4539
A0
A1
A2 GND
50Ω
COM
35pF
50Ω
NO1B
+3V
0V
tON
MAX4540
A1
GND
0.8(VNO1, VNO1B)
VCOM
90% 90%
NO2B–NO4B
NO1A–NO4A
LATCH
CAL
A0
-5V
V+
EN
50%
VCOM
300Ω
VEN
50%
COMB
V-
VCOM
300Ω
35pF
-5V
Figure 3. Enable Switching Time
14
tR < 20ns
tF < 20ns
0V
V-
+5V
V+
______________________________________________________________________________________
tOFF
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
+5V
RS
NO_
V+
LOGIC
INPUT
VEN
EN
VS
MAX4539
A0
A1
A2
CHANNEL
SELECT
CAL
LATCH
GND
COM
V+
ON
OFF
ON
0V
VCOM
∆VOUT
CL = 1nF
VCOM
∆VOUT IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER
ERROR Q WHEN THE CHANNEL TURNS OFF.
V-5V
Q = ∆VOUT x CL
+5V
RS
NO_
V+
LOGIC
INPUT
VEN
EN
VS
MAX4540
A0
CHANNEL
SELECT
COMA
ON
OFF
ON
0V
VCOM_
A1
CAL
LATCH
GND
V+
∆VOUT
CL = 1nF
VCOM
∆VOUT IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER
ERROR Q WHEN THE CHANNEL TURNS OFF.
V-5V
Q = ∆VOUT x CL
Figure 4. Charge Injection
+5V 10nF
V+
VIN
V+
EN
V
OFF ISOLATION = 20log OUT
VIN
NO_
MAX4539
MAX4540
V+
NETWORK
ANALYZER
50Ω
50Ω
A
VCOM
V
CROSSTALK = 20log OUT
VIN
MEAS.
REF
COM_
LATCH CAL V- GND
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
MAX4539/MAX4540
Test Circuits/Timing Diagrams (continued)
MAX4539/MAX4540
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
Test Circuits/Timing Diagrams (continued)
+5V
+5V
V+
V+
A2
CHANNEL
SELECT
NO1A
NO1
A1
1MHz
CAPACITANCE
ANALYZER
NO8
MAX4539
A0
CHANNEL
SELECT
COM
A1
MAX4540 NO4A
A0
COMA
1MHz
CAPACITANCE
ANALYZER
f = 1MHz
f = 1MHz
CAL, LATCH,
GND
EN
CAL, LATCH,
GND
EN
V-
V-
-5V
-5V
Figure 6. NO_/COM_ Capacitance
V+
LATCH
50%
50%
EN
V+
LATCH
+3V
NO2
NO1, NO3-NO8
A0
A1
A2
CAL
50%
EN
MAX4539
t ES
COM
GND
V-
Figure 8. Enable Setup Time
V-
LATCH
50%
t MPW
tS
50%
tH
ADDRESS (A_)
VIH
VIL
Figure 7. Setup Time, Hold Time, Latch Pulse Width
16
______________________________________________________________________________________
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
V+
GND
VREFHI
1
2
3
4
MAX4540
LOGIC
DECODER
20
19
18
17
16
LATCH
EN
CAL
A0
A1
15R
4081R
4081R
REFLO
COMA
NO1A
NO2A
NO3A
NO4A
5
15R
15
6
7
14
8
13
12
9
10
11
COMB
NO4B
NO3B
NO2B
NO1B
______________________________________________________________________________________
17
MAX4539/MAX4540
Pin Configurations/Functional Diagrams (continued)
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
SSOP.EPS
MAX4539/MAX4540
Package Information
18
______________________________________________________________________________________
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
PDIPN.EPS
______________________________________________________________________________________
19
MAX4539/MAX4540
Package Information (continued)
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
SOICW.EPS
MAX4539/MAX4540
Package Information (continued)
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.
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