_____________________Pin Configurations/Functional Diagrams/Truth Tables
_______________________________________________________________________________________
1
_______________General Description
Maxim's redesigned DG441/DG442 analog switches now
feature on-resistance matching (4
max) between
switches and guaranteed on-resistance flatness over the
signal range (9
max). These low on-resistance switches
conduct equally well in either direction. They guarantee
low charge injection (10pC max), low power consumption
(1.65mW), and an ESD tolerance of 2000V minimum per
Method 3015.7. The new design offers lower off-leakage
current over temperature (less than 5nA at +85C).
The DG441/DG442 are quad, single-pole/single-throw
(SPST) analog switches. The DG441 has four normally
closed switches, and the DG442 has four normally open
switches. Switching times are less than 250ns for t
ON
and
less than 70ns for t
OFF
. These devices operate from a sin-
gle +10V to +30V supply, or bipolar 4.5V to 20V sup-
plies. Maxim's improved DG441/DG442 continue to be
fabricated with a 44V silicon-gate process.
________________________Applications
Sample-and-Hold Circuits
PBX, PABX
Communication Systems
Guidance and Control Systems
Test Equipment
Audio-Signal Routing
Battery-Operated Systems
Military Radios
Heads-Up Displays
Modems
Fax Machines
______________________New Features
o Plug-In Upgrades for Industry-Standard DG441/DG442
o Improved rDS(ON) Match Between Channels(4max)
o Guaranteed rFLAT(ON) Over Signal Range (9max)
o Improved Charge Injection (10pC max)
o Improved Off-Leakage Current Over Temperature
(<5nA at +85C)
o Withstand Electrostatic Discharge (2000V min)
per Method 3015.7
__________________Existing Features
o Low r
DS(ON)
(85
max)
o Single-Supply Operation +10V to +30V
Bipolar-Supply Operation 4.5V to 20V
o Low Power Consumption (1.65mW max)
o Rail-to-Rail Signal Handling
o TTL/CMOS-Logic Compatible
______________Ordering Information
Improved, Quad, SPST Analog Switches
19-4611; Rev 3; 9/01
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
IN2
D2
S2
V+
V-
S1
D1
IN1
DG442
N.C.
S3
D3
IN3
IN4
D4
S4
GND
DIP/SO
DIP/SO
DG442
LOGIC
SWITCH
0
1
OFF
ON
SWITCHES SHOWN FOR LOGIC "0" INPUT
DG441
LOGIC
SWITCH
0
1
ON
OFF
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
IN2
D2
S2
V+
V-
S1
D1
IN1
DG441
N.C.
S3
D3
IN3
IN4
D4
S4
GND
TOP VIEW
N.C. = Not Internally Connected
DG441/DG442
Ordering Information continued at end of data sheet.
*Contact factory for dice specifications.
**Contact factory for availability and processing to MIL-STD-883B.
Pin Configurations continued at end of data sheet.
16 CERDIP
-40C to +85C
DG441DK
16 Narrow SO
-40C to +85C
DG441DY
16 Plastic DIP
-40C to +85C
DG441DJ
Dice*
0C to +70C
DG441C/D
16 Narrow SO
0C to +70C
DG441CY
16 Plastic DIP
0C to +70C
DG441CJ
PIN-PACKAGE
TEMP. RANGE
PART
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.
16 QFN
-40C to +85C
DG441EGE
2
_______________________________________________________________________________________
DG441/DG442
Improved, Quad, SPST Analog Switches
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+ = 15V, V- = -15V, GND = 0V, V
INH
= 2.4V, V
INL
= 0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
ABSOLUTE MAXIMUM RATINGS
Voltage Referenced to V-
V+.......................................................................................44V
GND ...................................................................................25V
V
L
.................................................(GND - 0.3V) to (V+ + 0.3V)
Digital Inputs, V
S
, V
D
(Note 1)......(V- - 2V) to (V+ + 2V) or 30mA
(whichever occurs first)
Continuous Current (any terminal) ......................................30mA
Peak Current, S or D
(pulsed at 1ms, 10% duty-cycle max) .................................100mA
Continuous Power Dissipation (T
A
= +70C)
Plastic DIP (derate 10.53mW/C above +70C) ..........842mW
QFN (derate 19.2mW/C above +70C) ....................1538mW
Narrow SO (derate 8.70mW/C above +70C) ............696mW
CERDIP (derate 10.00mW/C above +70C) ...............800mW
Operating Temperature Ranges
DG441C/DG442C ...............................................0C to +70C
DG441D, E/DG442D, E ...................................-40C to +85C
DG441AK/DG442AK .....................................-65C to +150C
Storage Temperature Range .............................-65C to +150C
Lead Temperature (soldering, 10sec) .............................+300C
V+ = 16.5V, V- = -16.5V,
V
D
= 15.5V,
V
S
= 15.5V
-0.50
0.08
0.50
I
D(ON)
or
I
S(ON)
V+ = 13.5V, V- = -13.5V,
I
S
= -10mA,
V
D
= 8.5V or -8.5V
(Note 3)
V
IN
= 0.8V
V+ = 16.5V, V- = -16.5V,
V
D
= 15.5V,
V
S
= 15.5V
-.0.50
0.01
0.50
V+ = 16.5V, V- = -16.5V,
V
D
= 15.5V,
V
S
= 15.5V
-0.50
0.01
0.50
I
D(OFF)
Drain Off-Leakage Current
(Note 5)
nA
V+ = 15V, V- = -15V,
V
D
= 10V,
I
S
= -10mA
4
r
DS(ON)
On-Resistance Match
Between Channels (Note 4)
V
IN
= 2.4V
CONDITIONS
Drain On-Leakage Current
(Note 5)
nA
T
A
= +25C
T
A
= T
MAX
A
-20
20
nA
-500
0.01
500
I
INL
Input Current with
Input Voltage Low
-5
5
T
A
= +25C
T
A
= T
MAX
C, D
nA
-500
0.01
500
I
INH
Input Current with
Input Voltage High
5
50
85
r
DS(ON)
Drain-Source On-Resistance
V
-15
15
V
ANALOG
Analog-Signal Range
I
S(OFF)
Source Off-Leakage Current
(Note 5)
nA
-20
20
T
A
= +25C
T
A
= T
MAX
C, D
T
A
= +25C
T
A
= T
MIN
to T
MAX
V+ = 15V, V- = -15V,
V
D
= 5V or -5V,
I
S
= -10mA
9
100
T
A
= +25C
T
A
= T
MIN
to T
MAX
r
FLAT(ON)
On-Resistance Flatness
(Note 4)
15
T
A
= +25C
T
A
= T
MIN
to T
MAX
UNITS
MIN
TYP
MAX
(Note 2)
SYMBOL
PARAMETER
A
-5
5
-20
20
A
-10
10
C, D
Note 1: Signals on S, D, or IN exceeding V+ or V- are clamped by internal diodes. Limit forward current to maximum current ratings.
DIGITAL
SWITCH
DG441/DG442
Improved, Quad, SPST Analog Switches
_______________________________________________________________________________________
3
T
A
= +25C
T
A
= T
MIN
to T
MAX
T
A
= +25C
All channels on or off, V+ = 16.5V, V- = -16.5V,
V
IN
= 0V or 5V
T
A
= +25C
f = 1MHz, Figure 6
T
A
= +25C
pF
T
A
= +25C
T
A
= +25C
C
L
= 1nF, V
GEN
= 0V,
R
GEN
= 0
, Figure 3
All channels on or off,
V+ = 16.5V, V- = -16.5V,
V
IN
= 0V or 5V
T
A
= +25C
All channels on or off, V+ = 16.5V, V- = -16.5V,
V
IN
= 0V or 5V
CONDITIONS
110
170
Q
Charge Injection (Note 3)
pC
5
10
T
A
= +25C
DG441, V
D
= 10V, Figure 2
ns
4
C
D(OFF)
Drain Off-Capacitance
pF
4
T
A
= +25C
R
L
= 50
, C
L
= 5pF,
f = 1MHz, Figure 5
dB
60
Crosstalk (Note 7)
dB
-100
R
L
= 50
, C
L
= 5pF,
f = 1MHz, Figure 4
OIRR
Off-Isolation Rejection
Ratio (Note 6)
f = 1MHz, Figure 6
C
S(OFF)
Source Off-Capacitance
T
A
= +25C
A
15
100
I+
Positive Supply Current
V
4.5
20.0
V+, V-
Power-Supply Range
150
250
t
OFF
Turn-Off Time
ns
90
120
V
S
= 10V, R
L
= 1k
, Figure 2
t
ON
A
-1
-0.0001
1
I-
Negative Supply Current
-5
5
Turn-On Time
DG442, V
D
= 10V, Figure 2
A
-100
-15
I
GND
Ground Current
f = 1MHz, Figure 6
C
D(ON)
Drain On-Capacitance
pF
UNITS
MIN
TYP
MAX
(Note 2)
SYMBOL
PARAMETER
16
ELECTRICAL CHARACTERISTICS--Dual Supplies (continued)
(V+ = 15V, V- = -15V, GND = 0V, V
INH
= 2.4V, V
INL
= 0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
SUPPLY
DYNAMIC
DG441/DG442
Improved, Quad, SPST Analog Switches
4
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS--Single Supply
(V+ = 12V, V- = 0V, GND = 0V, V
INH
= 2.4V, V
INL
= 0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
__________________________________________Typical Operating Characteristics
(T
A
= +25C, unless otherwise noted.)
-15
0
15
-10
-5
5
10
ON-LEAKAGE CURRENTS
ON-LEAKAGE (nA)
-2
-1
0
1
2
3
4
VS, VD (V)
T
A
= +125C
T
A
= +85C
V+ = 15V
V- = -15V
-15
0
15
-10
-5
5
10
OFF-LEAKAGE CURRENTS
OFF-LEAKAGE (nA)
-1
0
2
1
VS, VD (V)
T
A
= +85C
T
A
= +125C
V+ = 15V
V- = -15V
SWITCHING THRESHOLD vs.
BIPOLAR SUPPLY VOLTAGE
V
IN
(V)
0
0.5
1.5
2.0
2.5
3.0
3.5
5
10
15
20
BIPOLAR SUPPLY VOLTAGE (V)
MAX
MIN
Note 2: Typical values are for design aid only, are not guaranteed, and are not subject to production testing. The algebraic con-
vention, 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: On-resistance match between channels and flatness is guaranteed only with bipolar-supply operation. Flatness is defined
as the difference between the maximum and the minimum value of on-resistance as measured at the extremes of the speci-
fied analog range.
Note 5: Leakage parameters I
S(OFF)
, I
D(OFF)
, and I
D(ON)
are 100% tested at the maximum rated hot temperature and guaranteed
by correlation at +25C.
Note 6: Off-Isolation Rejection Ratio = 20log (V
D
/V
S
), V
D
= output, V
S
= input to off switch.
Note 7: Between any two switches.
T
A
= +25C
T
A
= T
MIN
to T
MAX
A
(Note 3)
T
A
= +25C
A
15
100
All channels on or off, V
IN
= 0V or 5V
I+
T
A
= T
MIN
to T
MAX
Positive Supply Current
T
A
= +25C
C
L
= 1nF, V
GEN
= 0V
ns
V+ = 10.8V, V
D
= 3V, 8V,
I
S
= 1.0mA
60
200
Q
Charge Injection (Note 3)
pC
5
10
CONDITIONS
-5
5
V
S
= 8V, Figure 2
t
OFF
Turn-Off Time
T
A
= +25C
All channels on or off,
V
IN
= 0V or 5V
V
-100
-15
All channels on or off, V
IN
= 0V or 5V
I
GND
Ground Current
T
A
= +25C
V
0
12
V
ANALOG
Analog Signal Range
10
30
I-
Negative Supply Current
A
-1
-0.0001
1
V+
100
160
r
DS(ON)
Drain-Source
On-Resistance
200
Power-Supply Range
V
S
= 8V, Figure 2
t
ON
Turn-On Time
ns
UNITS
MIN
TYP
MAX
(Note 2)
SYMBOL
PARAMETER
300
400
SWITCH
SUPPLY
DYNAMIC
DG441/DG442
Improved, Quad, SPST Analog Switches
_______________________________________________________________________________________
5
____________________________Typical Operating Characteristics (continued)
(T
A
= +25C, unless otherwise noted.)
ON-RESISTANCE vs. V
D
AND
UNIPOLAR SUPPLY VOLTAGE
0
25
50
75
100
125
150
175
200
225
250
0
5
10
15
20
VD (V)
r DS(ON)
(
)
V+ = 10V
V+ = 15V
V+ = 20V
ON-RESISTANCE vs. V
D
AND UNIPOLAR
SUPPLY VOLTAGE AND TEMPERATURE
0
25
50
75
100
125
150
r DS(ON)
(
)
0
4
8
12
VD (V)
T
A
= +125C
T
A
= +25C
T
A
= -55C
V+ = 12V
V- = 0V
ON-RESISTANCE vs. V
D
AND
BIPOLAR SUPPLY VOLTAGE
r DS(ON)
(
)
30
60
90
120
150
180
-20
-10
0
+10
+20
VD (V)
5V
10V
15V
20V
0
-15
0
15
-10
-5
5
10
ON-RESISTANCE vs. V
D
AND
BIPOLAR VOLTAGE AND TEMPERATURE
r DS(ON)
(
)
0
20
40
60
80
100
120
VD (V)
T
A
= +125C
T
A
= -55C
T
A
= +25C
V+ = 15V, V- = -15V
SWITCHING TIMES vs.
BIPOLAR SUPPLY VOLTAGE
TIME (ns)
0
40
80
120
160
200
240
5
10
15
20
BIPOLAR SUPPLY VOLTAGE (V)
tON
tOFF
SWITCHING TIMES vs.
UNIPOLAR SUPPLY VOLTAGE
TIME (ns)
0
50
100
150
200
250
300
350
10
15
20
25
UNIPOLAR SUPPLY VOLTAGE (V)
tON
tOFF
CHARGE INJECTION vs.
VD VOLTAGE (DUAL SUPPLY)
Q (pC)
-20
0
20
40
V
D
(V)
-15
-10
0
10
15
V+ = 15V
V- = -15V
CL = 1nF
CHARGE INJECTION vs.
VD VOLTAGE (SINGLE SUPPLY)
Q (pC)
-10
0
10
0
5
10
15
V
D
(V)
V+ = 12V
V- = 0V
CL = 1nF
__________Applications Information
Operation with Supply Voltages
Other Than 15V
Using supply voltages other than 15V reduces the
analog signal range. The DG441/DG442 switches oper-
ate with 4.5V to 20V bipolar supplies or with a +10V
to +30V single supply; connect V- to 0V when operating
with a single supply. Also, all device types can operate
with unbalanced supplies such as +24V and -5V. The
Typical Operating Characteristics graphs show typical
on-resistance with 20V, 15V, 10V, and 5V sup-
plies. (Switching times increase by a factor of two or
more for operation at 5V.)
Overvoltage Protection
Proper power-supply sequencing is recommended for
all CMOS devices. Do not exceed the absolute maxi-
mum ratings because stresses beyond the listed rat-
ings can cause permanent damage to the devices.
Always sequence V+ on first, followed by V- and logic
inputs. If power-supply sequencing is not possible, add
two small, external signal diodes in series with supply
pins for overvoltage protection (Figure 1). Adding exter-
nal diodes reduces the analog-signal range to 1V
below V+ and 1V above V-, but low switch resistance
and low leakage characteristics are unaffected. Device
operation is unchanged, and the difference between
V+ and V- should not exceed +44V.
_____________________Pin Description
DG441/DG442
Improved, Quad, SPST Analog Switches
6
_______________________________________________________________________________________
DIP/SO
QFN
FUNCTION
2, 15, 10, 7
16, 13, 8, 5
Analog Switch Drain
Terminal
3, 14, 11, 6
1, 12, 9, 4
Analog Switch Source
Terminal
4
2
Negative-Supply Voltage
Input
5
3
Ground
12
10
Not Internally Connected
13
11
Positive-Supply Voltage
Input--Connected to
Substrate
V+
S
V-
D
Vg
Figure 1. Overvoltage Protection Using External Blocking Diodes
NAME
D1D4
S1S4
V-
GND
N.C.
V+
1, 16, 9, 8
15, 14, 7, 6
Input
IN1IN4
PIN
DG441/DG442
Improved, Quad, SPST Analog Switches
_______________________________________________________________________________________
7
tOFF
0.8 x VOUT
VOUT
0.8 x VOUT
t
f
< 20ns
t
r
< 20ns
50%
0V
0V
+3V
SWITCH
OUTPUT
LOGIC INPUT WAVEFORM IS INVERTED FOR SWITCHES
THAT HAVE THE OPPOSITE LOGIC SENSE.
tON
SWITCH
INPUT
LOGIC
INPUT
+3V
IN
D
+15V
V+
V-
-15V
RL
35pF
VOUT
S
CL (INCLUDES FIXTURE AND STRAY CAPACITANCE)
GND
REPEAT TEST FOR CHANNELS 2, 3, AND 4.
VOUT = VD
R
L
R
L
+ rDS(ON)
LOGIC
INPUT
V
D
DG441
DG442
( )
VOUT
OFF
ON
OFF
VOUT
IN
IN
OFF
OFF
ON
Q =
VOUT CL
-15V
V-
V+
IN
GND
S
+15V
RGEN
VGEN
VIN = +3V
CL
1nF
VOUT
D
DG441
DG442
DG441
DG442
Figure 2. Switching Time
Figure 3. Charge Injection
NETWORK
ANALYZER
SIGNAL
GENERATOR
RGEN = 50
S
D
GND
RL
10dBm
10nF
V+
+15V
IN
0.8V or 2.4V
V-
-15V
10nF
DG441
DG442
NETWORK
ANALYZER
SIGNAL
GENERATOR
RGEN = 50
0.8V or 2.4V
S
IN1
D
GND
RL
10dBm
10nF
V+
+15V
D
IN2
S
0.8V or 2.4V
50
V-
-15V
10nF
DG441
DG442
Figure 4. Off-Isolation Rejection Ratio
Figure 5. Crosstalk (repeat for channels 3 and 4)
______________________________________________Timing Diagrams/Test Circuits
TOP VIEW
16
D1
15
IN1
14
IN2
13
D2
5
D4
6
IN4
7
IN3
8
D3
2
V-
1
S1
3
GND
4
S4
11
V+
12
S2
10
N.C.
9
S3
16
D1
15
IN1
14
IN2
13
D2
5
D4
6
IN4
7
IN3
8
D3
2
V-
1
S1
3
GND
4
S4
11
V+
12
S2
10
N.C.
9
S3
DG441
DG442
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.
8
___________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600
2001 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
DG441/DG442
Improved, Quad, SPST Analog Switches
PART
TEMP. RANGE
PIN-PACKAGE
DG442CY
0C to +70C
16 Narrow SO
DG442C/D
0C to +70C
Dice*
DG442DJ
-40C to +85C
16 Plastic DIP
DG442DY
-40C to +85C
16 Narrow SO
DG442DK
-40C to +85C
16 CERDIP
DG442AK
-55C to +125C
16 CERDIP**
CAPACITANCE
METER
D
S
GND
10nF
+15V
IN
0.8V or 2.4V
V-
-15V
10nF
+V
f = 1MHz
___________________Chip Topography
__________________Timing Diagrams/
Test Circuits (continued)
D3
D4
0.091"
(2.31mm)
0.071"
(1.80mm)
V-
GND
S4
IN3
IN4
S3
N.C.
S2
V+
D1
IN1
IN2
D2
S1
Figure 6. Source/Drain-On/Off Capacitance
TRANSISTOR COUNT: 126
SUBSTRATE CONNECTED TO V+
_Ordering Information (continued)
*Contact factory for dice specifications.
**Contact factory for availability and processing to MIL-STD-883B.
DG442AK
-55C to +125C
16 CERDIP**
DG442CJ
0C to +70C
16 Plastic DIP
DG442EGE
-40C to +85C
16 QFN
____Pin Configurations (continued)
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