Maxim DG444C/ Improved, quad, spst analog switch Datasheet

19-4705; Rev 1; 4/94
Improved, Quad, SPST Analog Switches
______________________New Features
♦
♦
♦
♦
♦
Plug-In Upgrades for Industry-Standard DG444/DG445
Improved rON Match Between Channels (4Ω max)
Guaranteed rFLAT(ON) Over Signal Range (9Ω max)
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 (35µW max)
♦ Rail-to-Rail Signal Handling
♦ TTL/CMOS-Logic Compatible
______________Ordering Information
________________________Applications
PART
TEMP. RANGE
Sample-and-Hold Circuits
Communication Systems
DG444CJ
0°C to +70°C
16 Plastic DIP
Test Equipment
Battery-Operated Systems
Heads-Up Displays
PBX, PABX
DG444DY
DG444C/D
DG444DJ
0°C to +70°C
0°C to +70°C
-40°C to +85°C
16 Narrow SO
Dice*
16 Plastic DIP
DG444DY
-40°C to +85°C
16 Narrow SO
Guidance and Control Systems
Audio Signal Routing
Military Radios
Modems/Faxes
PIN-PACKAGE
Ordering Information continued at end of data sheet.
* Contact factory for dice specifications.
_____________________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
V-
4
13 V+
V-
4
GND
5
12 V L
GND
5
S4
6
11 S3
S4
6
11 S3
D4
7
10 D3
D4
7
10 D3
IN4
8
IN4
8
DG444
9
IN3
13 V+
DG445
12 V L
9
DIP/SO
IN3
DIP/SO
DG444
LOGIC
SWITCH
LOGIC
DG445
SWITCH
0
ON
0
OFF
1
OFF
1
ON
SWITCHES SHOWN FOR LOGIC "0" INPUT
________________________________________________________________ Maxim Integrated Products
Call toll free 1-800-998-8800 for free samples or literature.
1
DG444/DG445
_______________General Description
Maxim’s redesigned DG444/DG445 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 (35µW max), 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 DG444/DG445 are quad, single-pole/single-throw
(SPST) analog switches. The DG444 has 4 normally
closed switches and the DG445 has 4 normally open
switches. Switching times are less than 250ns for tON
and less than 70ns for tOFF. Operation is from a single
+10V to +30V supply, or bipolar ±4.5V to ±20V supplies. Maxim’s improved DG444/DG445 continue to be
fabricated with a 44V silicon-gate process.
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)
16-Pin Plastic DIP (derate 10.53mW/°C above +70°C) 842mW
16-Pin Narrow SO (derate 8.70mW/°C above +70°C) ..696mW
Operating Temperature Ranges
DG444C/DG445C ................................................0°C to +70°C
DG444D/DG445D .............................................-40°C to +85°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 rating.
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, VL = 5V, 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
Analog Signal Range
Drain-Source
On-Resistance
On-Resistance Match
Between Channels (Note 4)
VANALOG
rDS(ON)
∆rDS(ON)
On-Resistance Flatness (Note 4) rFLAT(ON)
(Note 3)
-15
15
V+ = 13.5V, V- = -13.5V,
VD = ±8.5V,
IS = -10mA
TA = +25°C
VD = ±10V,
IS = -10mA
TA = +25°C
4
TA = TMIN to TMAX
5
VD = ±5V,
IS = -10mA
TA = +25°C
9
TA = TMIN to TMAX
15
50
TA = TMIN to TMAX
Source Leakage Current
(Note 5)
V+ = 16.5V, V- = -16.5V,
VD = ±15.5V,
VS = 15.5V
TA = +25°C
IS(OFF)
Drain-Off Leakage Current
(Note 5)
V+ = 16.5V, V- = -16.5V,
VD = ±15.5V,
VS = 15.5V
TA = +25°C
ID(OFF)
Drain-On Leakage Current
(Note 5)
ID(ON)
or
IS(ON)
V+ = 16.5V, V- = -16.5V,
VD = ±15.5V,
VS = ±15.5V
TA = +25°C
±
±
DG444/DG445
Improved, Quad, SPST Analog Switches
85
V
Ω
100
-0.50
0.01
Ω
Ω
0.50
nA
TA = TMIN to TMAX
-5
-0.50
5
0.01
0.50
nA
TA = TMIN to TMAX
-5
-0.50
5
0.08
0.50
nA
TA = TMIN to TMAX
-10
10
INPUT
Input Current with
Input Voltage High
Input Current with
Input Voltage Low
2
IINH
VIN = 2.4V, all others = 0.8V
-0.5
-0.00001
0.5
µA
IINL
VIN = 0.8V, all others = 2.4V
-0.5
-0.00001
0.5
µA
_______________________________________________________________________________________
Improved, Quad, SPST Analog Switches
(V+ = 15V, V- = -15V, VL = 5V, GND = 0V, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER
SYMBOL
MIN
CONDITIONS
TYP
(Note 2)
MAX
UNITS
SUPPLY
Power-Supply Range
Positive Supply Current
Negative Supply Current
Logic Supply Current
Ground Current
V+, V-
±4.5
±20.0
V
All channels on or off,
V+ = 16.5V, V- = -16.5V,
VIN = 0V or 5V
TA = +25°C
-1
TA = TMIN to TMAX
-5
All channels on or off,
V+ = 16.5V, V- = -16.5V,
VIN = 0V or 5V
TA = +25°C
-1
TA = TMIN to TMAX
-5
All channels on or off,
V+ = 16.5V, V- = -16.5V,
VIN = 0V or 5V
TA = +25°C
-1
TA = TMIN to TMAX
-5
All channels on or off,
V+ = 16.5V, V- = -16.5V,
VIN = 0V or 5V
TA = +25°C
-1
TA = TMIN to TMAX
-5
VS = ±10V, Figure 2
TA = +25°C
150
250
ns
DG444, VS = ±10V, Figure 2
TA = +25°C
90
120
ns
DG445, VS = ±10V, Figure 2
TA = +25°C
110
170
ns
Q
CL = 1nF, VGEN = 0V,
RGEN = 0Ω, Figure 3
TA = +25°C
5
10
pC
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
I+
I-
IL
IGND
0.001
1
µA
5
-0.0001
1
µA
5
0.001
1
µA
5
-0.0001
1
µA
5
DYNAMIC
Turn-On Time
tON
Turn-Off Time
tOFF
Charge Injection (Note 3)
Off-Isolation Rejection
Ratio (Note 6)
Crosstalk (Note 7)
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
Source-On Capacitance
CS(ON)
f = 1MHz, Figure 7
TA = +25°C
16
pF
Drain-On Capacitance
CD(ON)
f = 1MHz, Figure 7
TA = +25°C
16
pF
_______________________________________________________________________________________
3
DG444/DG445
ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)
ELECTRICAL CHARACTERISTICS—Single Supply
(V+ = 12V, V- = 0V, VL = 5V, GND = 0V, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER
SYMBOL
MIN
CONDITIONS
TYP
(Note 2)
MAX
100
160
UNITS
SWITCH
Analog Signal Range
VANALOG
Drain-Source
On-Resistance
rDS(ON)
(Note 3)
0
V+ = 10.8V,
VL = 5.25V,
VD = 3V, 8V,
IS = -10mA
12
TA = +25°C
V
Ω
TA = TMIN to TMAX
200
SUPPLY
Power-Supply Range
V+, V-
10.8
TA = +25°C
TA = TMIN to TMAX
TA = +25°C
TA = TMIN to TMAX
-1
-5
-1
-5
All channels on or off,
VIN = 0V or 5V
TA = +25°C
TA = TMIN to TMAX
TA = +25°C
TA = TMIN to TMAX
-1
-5
-1
-5
Power-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
Logic Supply Current
IL
All channels on or off,
VIN = 0V or 5V
Ground Current
IGND
24.0
0.001
1
5
1
5
-0.0001
0.001
1
5
1
5
-0.0001
V
µA
µA
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,
RGEN = 0Ω, Figure 3
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 are 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 signal range.
Note 5: Leakage parameters IS(OFF), ID(OFF), ID(ON), and IS(ON), are100% tested at the maximum rated hot temperature and guaranteed 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
TA = +85°C
-1
0
TA = +85°C
V+ = 15V
V- = -15V
-5
0
VS, VD (V)
4
5
10
15
DG444/5-3
IN LOW MAX
0.5
V+ = 15V
V- = -15V
-1
-10
2.0
1.5
-0.5
-2
IN HI MIN
2.5
VIN (V)
OFF LEAKAGE (nA)
0
3.0
TA = +125°C
0.5
TA = +125°C
3.5
DG444/5-2
1
1
-15
SWITCHING THRESHOLD vs.
BIPOLAR SUPPLY VOLTAGE
OFF LEAKAGE CURRENTS
DG444/5-1
2
ON LEAKAGE (nA)
DG444/DG445
Improved, Quad, SPST Analog Switches
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-SUPPLY VOLTAGE
±5V
125
V+ = 10V
100
V+ = 15V, V- = -15V
80
90
V+ = 15V
75
V+ = 20V
50
rDS(ON)(Ω)
rDS(ON)(Ω)
rDS(ON)(Ω)
100
±10V
60
±15V
30
20
0
0
5
10
15
20
-20
-10
TA = +25°C
40
TA = -55°C
±20V
25
0
TA = +125°C
60
0
10
0
-15
20
-10
10
VD (V)
0
VD (V)
ON-RESISTANCE vs. VD, UNIPOLARSUPPLY VOLTAGE AND TEMPERATURE
SWITCHING TIME vs.
BIPOLAR-SUPPLY VOLTAGE
SWITCHING TIME vs.
UNIPOLAR-SUPPLY VOLTAGE
TA = +125°C
200
DG444/5-8
160
DG444/5-7
150
-5
5
VD (V)
V- = 0V
15
DG444/5-9
V+ = 5V
DG444/5-5
120
DG444/5-4
150
ON-RESISTANCE vs. VD, BIPOLAR
SUPPLY VOLTAGE AND TEMPERATURE
DG444/5-6
ON-RESISTANCE vs. VD
AND UNIPOLAR-SUPPLY VOLTAGE
125
120
TA = -40°C
tON
TIME (ns)
TIME (ns)
75
80
100
tON
50
tOFF
50
40
tOFF
V+ = 12V
V- = 0V
0
0
0
4
8
0
±5
12
±10
±15
±20
10
BIPOLAR-SUPPLY VOLTAGE (V)
VD (V)
10
DG444/5-10
V+ = 12V
V- = 0V
CL = 1nF
Q (pC)
V+ = 15V
V- = -15V
CL = 1nF
25
CHARGE INJECTION vs.
VD VOLTAGE
CHARGE INJECTION vs.
VD VOLTAGE
20
15
20
UNIPOLAR-SUPPLY VOLTAGE (V)
0
DG444/5-11
25
Q (pC)
rDS(ON)(Ω)
150
TA = +25°C
100
0
-10
-20
-15
-10
0
VD (V)
10
15
0
5
10
15
VD (V)
_______________________________________________________________________________________
5
DG444/DG445
____________________________Typical Operating Characteristics (continued)
(TA = +25°C, unless otherwise noted.)
DG444/DG445
Improved, Quad, SPST Analog Switches
_____________________Pin Description
PIN
NAME
1, 16, 9, 8
IN1-IN4
Logic Control Inputs
FUNCTION
2, 15, 10, 7
D1-D4
Drain Outputs
3, 14, 11, 6
S1-S4
Source Outputs
4
V-
5
GND
12
VL
Logic Supply-Voltage Input
13
V+
Positive Supply-Voltage Input—
connected to substrate
Negative Supply-Voltage Input
Ground
__________Applications Information
General Operation
1. Switches are open when power is off.
2. IN, D, and S should not exceed V+ or V-, even with
the power off.
3. Switch leakage is from each analog switch terminal
to V+ or V-, not to other switch terminals.
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.)
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 may cause permanent damage to the
devices. Always sequence V+ on first, followed by
VL , 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 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 Vshould not exceed +44V.
V+
Operation with Supply Voltages
Other Than ±15V
Using supply voltages other than ±15V will reduce the
analog signal range. The DG444/DG445 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. VL
must be connected to +5V to be TTL compatible, or to
V+ for CMOS-logic level inputs. The Typical Operating
S
D
Vg
V-
Figure 1. Overvoltage Protection Using External Blocking Diodes
______________________________________________Timing Diagrams/Test Circuits
LOGIC
INPUT
+5V
+15V
VL
V+
DG444
DG445
+3V
t f < 20ns
t r < 20ns
50%
SWITCH
INPUT
S
D
VOUT
0V
IN
tOFF
VOUT
0.8 x VOUT
SWITCH
OUTPUT
0.8 x VOUT
LOGIC
INPUT
+3V
RL
GND
V-
-15V
0V
tON
LOGIC INPUT WAVEFORM IS INVERTED FOR SWITCHES
THAT HAVE THE OPPOSITE LOGIC SENSE.
REPEAT TEST FOR CHANNELS 2, 3, AND 4.
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
RL
VOUT = VD
RL + rDS(ON)
(
)
Figure 2. Switching Time
6
_______________________________________________________________________________________
CL
Improved, Quad, SPST Analog Switches
∆VOUT
VOUT
RGEN
+5V
+15V
VL
V+
DG444
DG445
D
S
VOUT
IN
DG444
OFF
ON
OFF
VGEN
CL
GND
OFF
ON
V-
IN
-15V
OFF
IN
VIN = +3V
Q = ∆VOUT × CL
DG445
Figure 3. Charge Injection
10nF
SIGNAL
GENERATOR
10dBm
D
+15V
+5V
10nF
DG444
DG445
V+
SIGNAL
GENERATOR
VL
RGEN = 50Ω
10dBm
D
+15V
+5V
V+
VL
DG444
DG445
50Ω
S
RGEN = 50Ω
IN
0V or +2.4V
IN
IN
0V or +2.4V
0V or +2.4V
NETWORK
ANALYZER
S
GND
V-
10nF
RL
S
NETWORK
ANALYZER
D
GND
-15V
D
Figure 5. Crosstalk
+15V
+5V
V+
VL
f = 1MHz
10nF
DG444
DG445
D
CAPACITANCE
METER
IN
CAPACITANCE
METER
0V or +2.4V
S
V-
-15V
Figure 6. Source/Drain-Off Capacitance
10nF
+15V
+5V
V+
VL
DG444
DG445
IN
f = 1MHz
VD
GND
NC
10nF
-15V
Figure 4. Off-Isolation Rejection Ratio
10nF
V-
RL
0V or +2.4V
S
GND
V-
10nF
-15V
Figure 7. Source/Drain-On Capacitance
_______________________________________________________________________________________
7
DG444/DG445
_________________________________Timing Diagrams/Test Circuits (continued)
DG444/DG445
Improved, Quad, SPST Analog Switches
_Ordering Information (continued)
PART
TEMP. RANGE
DG445CJ
0°C to +70°C
16 Plastic DIP
DG445CY
DG445C/D
DG445DJ
0°C to +70°C
0°C to +70°C
-40°C to +85°C
16 Narrow SO
Dice*
16 Plastic DIP
DG445DY
-40°C to +85°C
16 Narrow SO
___________________Chip Topography
D1
PIN-PACKAGE
IN1
IN2
D2
S2
S1
V-
* Contact factory for dice specifications.
V+
0.091"
VL (2.31mm)
GND
S4
S3
D4
IN4
IN3
D3
0.071"
(1.80mm)
TRANSISTOR COUNT: 126
SUBSTRATE CONNECTED TO V+
________________________________________________________Package Information
DIM
D1
A
A1
A2
A3
B
B1
C
D
D1
E
E1
e
eA
eB
L
α
E
E1
D
A3
A A2
L A1
INCHES
MAX
MIN
0.200
–
–
0.015
0.150
0.125
0.080
0.055
0.022
0.016
0.065
0.050
0.012
0.008
0.765
0.745
0.030
0.005
0.325
0.300
0.280
0.240
0.100 BSC
0.300 BSC
0.400
–
0.150
0.115
15˚
0˚
MILLIMETERS
MIN
MAX
–
5.08
0.38
–
3.18
3.81
1.40
2.03
0.41
0.56
1.27
1.65
0.20
0.30
18.92
19.43
0.13
0.76
7.62
8.26
6.10
7.11
2.54 BSC
7.62 BSC
–
10.16
2.92
3.81
0˚
15˚
21-587A
α
C
e
B1
B
eA
16-PIN PLASTIC
DUAL-IN-LINE
PACKAGE
eB
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
© 1994 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.