MAXIM DG442AK

19-4611; Rev 2; 7/96
Improved, Quad, SPST Analog Switches
Maxim’s redesigned DG441/DG442 analog switches now
feature on-resistance matching (4Ω max) between
switches and guaranteed on-resistance flatness over the
signal range (9Ω 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 +85°C).
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 tON and
less than 70ns for tOFF. These devices operate from a single +10V to +30V supply, or bipolar ±4.5V to ±20V supplies. 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
♦
♦
♦
♦
♦
Plug-In Upgrades for Industry-Standard DG441/DG442
Improved rDS(ON) Match Between Channels(4Ωmax)
Guaranteed rFLAT(ON) Over Signal Range (9Ωmax)
Improved Charge Injection (10pC max)
Improved Off-Leakage Current Over Temperature
(<5nA at +85°C)
♦ Withstand Electrostatic Discharge (2000V min)
per Method 3015.7
__________________Existing Features
♦ Low rDS(ON) (85Ω max)
♦ Single-Supply Operation +10V to +30V
Bipolar-Supply Operation ±4.5V to ±20V
♦ Low Power Consumption (1.65mW max)
♦ Rail-to-Rail Signal Handling
♦ TTL/CMOS-Logic Compatible
______________Ordering Information
PART
TEMP. RANGE
PIN-PACKAGE
DG441CJ
0°C to +70°C
16 Plastic DIP
DG441CY
DG441C/D
DG441DJ
0°C to +70°C
0°C to +70°C
-40°C to +85°C
16 Narrow SO
Dice*
16 Plastic DIP
DG441DY
DG441DK
DG441AK
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
16 Narrow SO
16 CERDIP
16 CERDIP**
Ordering Information continued on last page.
*Contact factory for dice specifications.
**Contact factory for availability and processing to MIL-STD-883B.
_____________________Pin Configurations/Functional Diagrams/Truth Tables
TOP VIEW
IN1
1
16 IN2
IN1
1
16 IN2
D1
2
15 D2
D1
2
15 D2
S1
3
14 S2
S1
3
14 S2
13 V+
V-
4
GND
5
V-
4
GND
5
DG441
12 N.C.
13 V+
DG442
12 N.C.
S4
6
11 S3
S4
6
11 S3
D4
7
10 D3
D4
7
10 D3
IN4
8
IN4
8
9
IN3
9
DIP/SO
DIP/SO
DG441
LOGIC
SWITCH
0
1
IN3
LOGIC
ON
OFF
0
1
SWITCHES SHOWN FOR LOGIC “0” INPUT
DG442
SWITCH
OFF
ON
N.C. = Not Internally Connected
_______________________________________________________________________________________
1
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DG441/DG442
_______________General Description
ABSOLUTE MAXIMUM RATINGS
Voltage Referenced to VV+.........................................................................................44V
GND .....................................................................................25V
VL ...................................................(GND - 0.3V) to (V+ + 0.3V)
Digital Inputs, VS, VD (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 (TA = +70°C)
Plastic DIP (derate 10.53mW/°C above +70°C) ............842mW
Narrow SO (derate 8.70mW/°C above +70°C) ..............696mW
CERDIP (derate 10.00mW/°C above +70°C) .................800mW
Operating Temperature Ranges
DG441C/DG442C .................................................0°C to +70°C
DG441D/DG442D ..............................................-40°C to +85°C
DG441AK/DG442AK .......................................-65°C to +150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10sec) .............................+300°C
Note 1: Signals on S, D, or IN 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+ = 15V, V- = -15V, GND = 0V, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
(Note 2)
MAX
UNITS
SWITCH
Drain-Source On-Resistance
VANALOG
rDS(ON)
On-Resistance Match
Between Channels (Note 4)
∆rDS(ON)
On-Resistance Flatness
(Note 4)
rFLAT(ON)
Source Off-Leakage Current
(Note 5)
Drain Off-Leakage Current
(Note 5)
Drain On-Leakage Current
(Note 5)
(Note 3)
-15
V+ = 13.5V, V- = -13.5V, TA = +25°C
IS = -10mA,
TA = TMIN to TMAX
VD = 8.5V or -8.5V
15
50
85
V
Ω
100
V+ = 15V, V- = -15V,
VD = ±10V,
IS = -10mA
TA = +25°C
4
TA = TMIN to TMAX
5
V+ = 15V, V- = -15V,
VD = 5V or -5V,
IS = -10mA
TA = +25°C
9
TA = TMIN to TMAX
15
Ω
-0.50
TA = +25°C
V+ = 16.5V, V- = -16.5V,
VD = 15.5V,
C, D
TA = TMAX
VS = ±15.5V
A
-.0.50
TA = +25°C
V+ = 16.5V, V- = -16.5V,
VD = ±15.5V,
C, D
TA = TMAX
VS = ±15.5V
A
-0.50
IINH
VIN = 2.4V
-500
0.01
500
nA
IINL
VIN = 0.8V
-500
0.01
500
nA
IS(OFF)
ID(OFF)
ID(ON)
or
IS(ON)
0.01
Ω
TA = +25°C
V+ = 16.5V, V- = -16.5V,
VD = 15.5V,
C, D
TA = TMAX
VS = ±15.5V
A
±
Analog-Signal Range
±
DG441/DG442
Improved, Quad, SPST Analog Switches
0.50
-5
5
-20
20
0.01
0.50
-5
5
-20
20
0.08
nA
nA
0.50
-10
10
-20
20
nA
DIGITAL
Input Current with
Input Voltage High
Input Current with
Input Voltage Low
2
_______________________________________________________________________________________
Improved, Quad, SPST Analog Switches
(V+ = 15V, V- = -15V, GND = 0V, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
(Note 2)
MAX
UNITS
SUPPLY
Power-Supply Range
V+, V-
±4.5
Positive Supply Current
I+
All channels on or off, V+ = 16.5V, V- = -16.5V,
VIN = 0V or 5V
Negative Supply Current
I-
All channels on or off,
V+ = 16.5V, V- = -16.5V,
VIN = 0V or 5V
Ground Current
IGND
TA = +25°C
-1
TA = TMIN to TMAX
-5
±20.0
V
15
100
µA
-0.0001
1
µA
All channels on or off, V+ = 16.5V, V- = -16.5V,
VIN = 0V or 5V
-100
5
-15
µA
DYNAMIC
Turn-On Time
tON
Turn-Off Time
tOFF
Charge Injection (Note 3)
Off-Isolation Rejection
Ratio (Note 6)
VS = ±10V, RL = 1kΩ, Figure 2 TA = +25°C
150
250
ns
DG441, VD = ±10V, Figure 2
TA = +25°C
90
120
DG442, VD = ±10V, Figure 2
TA = +25°C
110
170
Q
CL = 1nF, VGEN = 0V,
RGEN = 0Ω, Figure 3
TA = +25°C
5
10
OIRR
RL = 50Ω, CL = 5pF,
f = 1MHz, Figure 4
TA = +25°C
60
dB
RL = 50Ω, CL = 5pF,
f = 1MHz, Figure 5
TA = +25°C
-100
dB
Crosstalk (Note 7)
ns
pC
Source Off-Capacitance
CS(OFF)
f = 1MHz, Figure 6
TA = +25°C
4
pF
Drain Off-Capacitance
CD(OFF)
f = 1MHz, Figure 6
TA = +25°C
4
pF
Drain On-Capacitance
CD(ON)
f = 1MHz, Figure 6
TA = +25°C
16
pF
_______________________________________________________________________________________
3
DG441/DG442
ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)
ELECTRICAL CHARACTERISTICS—Single Supply
(V+ = 12V, V- = 0V, GND = 0V, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER
SYMBOL
MIN
CONDITIONS
TYP
(Note 2)
MAX
UNITS
SWITCH
Analog Signal Range
VANALOG
Drain-Source
On-Resistance
(Note 3)
0
V+ = 10.8V, VD = 3V, 8V,
IS = 1.0mA
rDS(ON)
TA = +25°C
12
100
TA = TMIN to TMAX
160
V
Ω
200
SUPPLY
Power-Supply Range
V+
Positive Supply Current
I+
All channels on or off, VIN = 0V or 5V
Negative Supply Current
I-
All channels on or off,
VIN = 0V or 5V
Ground Current
10
IGND
TA = +25°C
-1
TA = TMIN to TMAX
-5
All channels on or off, VIN = 0V or 5V
-100
30
V
15
100
µA
-0.0001
1
5
-15
µA
µA
DYNAMIC
Turn-On Time
tON
VS = 8V, Figure 2
TA = +25°C
300
400
ns
Turn-Off Time
tOFF
VS = 8V, Figure 2
TA = +25°C
60
200
ns
CL = 1nF, VGEN = 0V
TA = +25°C
5
10
pC
Charge Injection (Note 3)
Q
Note 2: Typical values are for design aid only, are not guaranteed, and are not subject to production testing. 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: 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 specified analog range.
Note 5: Leakage parameters IS(OFF), ID(OFF), and ID(ON) are 100% tested at the maximum rated hot temperature and guaranteed
by correlation at +25°C.
Note 6: Off-Isolation Rejection Ratio = 20log (VD/VS), VD = output, VS = input to off switch.
Note 7: Between any two switches.
__________________________________________Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
ON-LEAKAGE CURRENTS
2
V+ = 15V
V- = -15V
TA = +125°C
TA = +85°C
0
3.0
1
2.5
VIN (V)
2
1
3.5
V+ = 15V
V- = -15V
OFF-LEAKAGE (nA)
3
SWITCHING THRESHOLD vs.
BIPOLAR SUPPLY VOLTAGE
OFF-LEAKAGE CURRENTS
4
ON-LEAKAGE (nA)
DG441/DG442
Improved, Quad, SPST Analog Switches
TA = +125°C
4
2.0
TA = +85°C
0
MIN
1.5
-1
-2
-15
MAX
0.5
-1
-10
-5
5
0
VS, VD (V)
10
15
0
-15
-10
-5
5
0
VS, VD (V)
10
15
±5
±10
±15
BIPOLAR SUPPLY VOLTAGE (V)
_______________________________________________________________________________________
±20
Improved, Quad, SPST Analog Switches
ON-RESISTANCE vs. VD AND
BIPOLAR VOLTAGE AND TEMPERATURE
ON-RESISTANCE vs. VD AND
BIPOLAR SUPPLY VOLTAGE
ON-RESISTANCE vs. VD AND
UNIPOLAR SUPPLY VOLTAGE
250
V+ = 15V, V- = -15V
180
225
200
120
150
100
150
125
V+ = 10V
100
V+ = 15V
±5V
120
90
50
30
V+ = 20V
25
±10V
±15V
60
75
rDS(ON) (Ω)
rDS(ON) (Ω)
rDS(ON) (Ω)
175
0
5
10
15
ON-RESISTANCE vs. VD AND UNIPOLAR
SUPPLY VOLTAGE AND TEMPERATURE
0
+10
+20
TA = +25°C
-15
350
200
300
120
tON
80
50
V+ = 12V
V- = 0V
40
4
8
12
±5
VD (V)
±10
±15
tON
tOFF
0
±20
10
15
20
UNIPOLAR SUPPLY VOLTAGE (V)
BIPOLAR SUPPLY VOLTAGE (V)
CHARGE INJECTION vs.
VD VOLTAGE (DUAL SUPPLY)
40
25
CHARGE INJECTION vs.
VD VOLTAGE (SINGLE SUPPLY)
10
V+ = 15V
V- = -15V
CL = 1nF
V+ = 12V
V- = 0V
CL = 1nF
20
Q (pC)
0
150
50
0
0
200
100
tOFF
25
15
250
TIME (ns)
TA = -55°C
10
SWITCHING TIMES vs.
UNIPOLAR SUPPLY VOLTAGE
240
-5
5
SWITCHING TIMES vs.
BIPOLAR SUPPLY VOLTAGE
160
TIME (ns)
75
-10
0
VD (V)
Q (pC)
rDS(ON) (Ω)
100
TA = -55°C
VD (V)
TA = +125°C
125
TA = +25°C
0
-10
VD (V)
150
60
20
±20V
-20
20
TA = +125°C
40
0
0
80
0
0
-20
-10
-15
-10
0
VD (V)
10
15
0
5
10
15
VD (V)
_______________________________________________________________________________________
5
DG441/DG442
____________________________Typical Operating Characteristics (continued)
(TA = +25°C, unless otherwise noted.)
DG441/DG442
Improved, Quad, SPST Analog Switches
_____________________Pin Description
PIN
NAME
FUNCTION
1, 16, 9, 8 IN1–IN4 Input
2, 15, 10, 7 D1–D4
Drain Output
3, 14, 11, 6
S1–S4
Source Output
4
V-
5
GND
Ground
12
N.C.
Not Internally Connected
13
V+
Negative Supply Voltage Input
Overvoltage Protection
Proper power-supply sequencing is recommended for
all CMOS devices. Do not exceed the absolute maximum ratings because stresses beyond the listed ratings 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 external 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.
Positive Supply Voltage Input.
Connected to substrate.
V+
__________Applications Information
Operation with Supply Voltages
Other Than ±15V
Using supply voltages other than ±15V reduces the
analog signal range. The DG441/DG442 switches operate 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 supplies. (Switching times increase by a factor of two or
more for operation at ±5V.)
6
D
S
Vg
V-
Figure 1. Overvoltage Protection Using External Blocking Diodes
_______________________________________________________________________________________
Improved, Quad, SPST Analog Switches
+15V
LOGIC
INPUT
DG441
DG442
+3V
tf < 20ns
tr < 20ns
50%
V+
SWITCH
INPUT
S
D
VD
0V
VOUT
IN
RL
tOFF
VOUT
SWITCH
OUTPUT
0.8 x VOUT
0.8 x VOUT
GND
LOGIC
INPUT
+3V
35pF
V-
-15V
0V
REPEAT TEST FOR CHANNELS 2, 3, AND 4.
tON
CL (INCLUDES FIXTURE AND STRAY CAPACITANCE)
RL
VOUT = VD
RL + rDS(ON)
(
LOGIC INPUT WAVEFORM IS INVERTED FOR SWITCHES
THAT HAVE THE OPPOSITE LOGIC SENSE.
)
Figure 2. Switching Time
∆VOUT
+15V
DG441
DG442
V+
RGEN
VOUT
IN
DG441
OFF
ON
OFF
S
D
OFF
ON
CL
1nF
VGEN
GND
IN
DG442
VOUT
IN
V-15V
VIN = +3V
OFF
Q = ∆VOUT × CL
Figure 3. Charge Injection
10nF
10nF
+15V
+15V
DG441
DG442
DG441
DG442
SIGNAL
GENERATOR
10dBm
SIGNAL
GENERATOR
V+
D
RGEN = 50Ω
10dBm
50Ω
S
RGEN = 50Ω
0.8V or 2.4V
IN
0.8V or 2.4V
S
NETWORK
ANALYZER
V+
D
GND
V-
RL
-15V
Figure 4. Off-Isolation Rejection Ratio
0.8V or 2.4V
NETWORK
ANALYZER
10nF
IN2
IN1
D
S
GND
V-
RL
10nF
-15V
Figure 5. Crosstalk (repeat for channels 3 and 4)
_______________________________________________________________________________________
7
DG441/DG442
______________________________________________Timing Diagrams/Test Circuits
DG441/DG442
Improved, Quad, SPST Analog Switches
__________________Timing Diagrams/
Test Circuits (continued)
___________________Chip Topography
D1
10nF
IN1
IN2
D2
+15V
S2
S1
+V
D
VIN
CAPACITANCE
METER
0.091"
(2.31mm)
N.C.
V+
0.8V or 2.4V
GND
S
f = 1MHz
GND
V-
10nF
S4
S3
-15V
D4
IN4
IN3
D3
0.071"
(1.80mm)
Figure 6. Source/Drain-On/Off Capacitance
_Ordering Information (continued)
PART
TEMP. RANGE
PIN-PACKAGE
DG442CJ
0°C to +70°C
16 Plastic DIP
DG442CY
DG442C/D
DG442DJ
0°C to +70°C
0°C to +70°C
-40°C to +85°C
16 Narrow SO
Dice*
16 Plastic DIP
DG442DY
DG442DK
DG442AK
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
16 Narrow SO
16 CERDIP
16 CERDIP**
TRANSISTOR COUNT: 126
SUBSTRATE CONNECTED TO V+
*Contact factory for dice specifications.
**Contact factory for availability and processing to MIL-STD-883B.
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
© 1996 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.