Vishay DG308A Quad monolithic spst cmos analog switch Datasheet

DG308A/DG309
Vishay Siliconix
Quad Monolithic SPST CMOS Analog Switches
Portable and Battery Powered
Instrumentation
Communication Systems
Computer Peripherals
High-Speed Multiplexing
15-V Analog Input Range
Low On-Resistance: 60 Fast Switching: 130 ns
Low Power Dissipation: 30 nW
CMOS Logic Compatible
Full Rail-to-Rail Analog Signal Range
Low Signal Error
Wide Dynamic Range
Single or Dual Supply Capability
Static Protected Logic Inputs
Space Savings (TSSOP)
Featuring low on-resistance (60 ) and fast switching
(130 ns), the DG308A is supplied in the “normally open”
configuration while DG309 is supplied “normally closed.” Input
thresholds are high voltage CMOS compatible.
voltage rating of 44 V, each switch conducts equally well in
both directions when on, and blocks up to the supply voltage
when off. An epitaxial layer prevents latch up.
Designed with the Vishay Siliconix PLUS-40 CMOS process
to combine low power dissipation with a high breakdown
The DG308B/309B upgrades are recommended for new
designs.
DG308A
IN1
1
16
IN2
D1
2
15
D2
S1
3
14
S2
V–
4
13
V+
GND
5
12
NC
S4
6
11
S3
D4
7
10
D3
IN4
8
9
IN3
Four SPST Switches per Package
Logic
DG308A
DG309
0
OFF
ON
1
ON
OFF
Logic “0” 3.5 V
Logic “1” 11 V
Top View
Document Number: 70046
S-52882—Rev. E, 28-Apr-97
www.vishay.com FaxBack 408-970-5600
4-1
DG308A/DG309
Vishay Siliconix
ORDERING INFORMATION
Temp Range
Package
0 to 70_C
16-Pin Plastic DIP
Part Number
DG308ACJ
DG309CJ
DG308ADY
16-Pin Narrow SOIC
DG309DY
–40
40 to 85
85_C
C
DG308ADQ
16-Pin TSSOP
DG309DQ
DG308AAK/883
–55 to 125_C
16-Pin CerDIP
DG309AK/883
ABSOLUTE MAXIMUM RATINGS
Voltages Referenced to V–
Power Dissipationb
16-Pin Plastic DIPc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 470 mW
16-Pin Narrow SOIC and TSSOPe . . . . . . . . . . . . . . . . . . . . . . . . . . . . 600 mW
16-Pin Cerdipd . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 900 mW
V+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 V
GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 V
Digital Inputsa, VS, VD . . . . . . . . . . . . . . . . . . . . . . . . . (V–) –2 V to (V+) +2V or
20 mA, whichever occurs first
Notes:
a. Signals on SX, DX, or INX exceeding V+ or V– will be clamped by internal
diodes. Limit forward diode current to maximum current ratings.
b. All leads welded or soldered to PC Board.
c. Derate 12 mW/_C above 75_C
d. Derate 6.5 mW/_C above 25_C
e. Derate 7.6 mW/_C above 75_C
Current, Any Terminal Except S or D . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 mA
Continuous Current, S or D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 mA
(Pulsed at 1 ms, 10% duty cycle max) . . . . . . . . . . . . . . . . . . . . . . . . . . 70 mA
Storage Temperature
(AK Suffix) . . . . . . . . . . . . . . . . . . –65 to 150_C
(CJ, DY, and DQ Suffix) . . . . . . . –65 to 125_C
SCHEMATIC DIAGRAM (TYPICAL CHANNEL)
V+
S
V–
VIN
Level
Shift/
Drive
V+
GND
D
V–
FIGURE 1.
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Document Number: 70046
S-52882—Rev. E, 28-Apr-97
DG308A/DG309
Vishay Siliconix
A Suffix
Test Conditions
Unless Otherwise Specified
Parameter
Symbol
V+ = 15 V, V– = –15 V
VIN = 3.5 V or 11 Vf
–55 to 125_C
Tempb
Typc
C, D Suffix
Mind
Maxd
Mind
Maxd
Unit
–15
15
–15
15
V
100
125
W
Analog Switch
Analog Signal Rangee
Drain-Source
On-Resistance
VANALOG
Full
rDS(on)
VD = 10 V, IS = 1 mA
Room
Full
60
100
150
Source Off
Leakage Current
IS(off)
VS = 14 V, VD = 14 V
Room
Full
0.1
–1
–100
1
100
–5
–100
5
100
Drain Off
Leakage Current
ID(off)
VD = 14 V, VS = 14 V
Room
Full
0.1
–1
–100
1
100
–5
–100
5
100
Drain On
Leakage Current
ID(on)
VD = VS = 14 V
Room
Full
0.1
–1
–100
1
100
–5
–200
5
200
Input Current with
Input Voltage High
IINH
VIN = 15 V
Full
0.001
Input Current with
Input Voltage Low
IINL
VIN = 0 V
Full
–0.001
Input Capacitance
CIN
Room
8
Room
130
200
200
Room
90
150
150
Room
–10
Room
11
Room
8
Room
27
Room
78
Room
Full
0.001
Room
Full
–0.001
nA
A
Digital Control
1
1
mA
–1
–1
pF
Dynamic Characteristics
Turn-On Time
tON
Turn-Off Time
tOFF
Charge Injection
Q
Source-Off
Capacitance
CS(off)
Drain-Off
Capacitance
CD(off)
Channel-On
Capacitance
CD(on)
Off-Isolationf
OIRR
See Figure 2
CL = 0.01 mF, Rgen = 0 W , Vgen = 0 V
f = 140 kHz,
kH VS, VD = 0 V
RL = 75 , VS = 2 Vp-p, f = 500 kHz
ns
pC
pF
F
dB
Power Supplies
Positive
Supply Current
I+
Negative
Supply Current
I–
All Channels On or Off
VIN = 0 V or 15 V
10
100
–10
–100
10
100
–100
mA
Notes:
a. Refer to PROCESS OPTION FLOWCHART.
b. Room = 25_C, Full = as determined by the operating temperature suffix.
c. Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing.
d. The algebraic convention whereby the most negative value is a minimum and the most positive a maximum, is used in this data sheet.
e. Guaranteed by design, not subject to production test.
f.
VIN = input voltage to perform proper function.
Document Number: 70046
S-52882—Rev. E, 28-Apr-97
www.vishay.com S FaxBack 408-970-5600
4-3
DG308A/DG309
Vishay Siliconix
_ rDS(on) vs. VD and Power Supply
rDS(on) vs. VD and Power Supply Voltage
TA = 25_C
150
r DS(on)– Drain-Source On-Resistance ( W )
r DS(on)– Drain-Source On-Resistance ( W )
250
5 V
120
7.5 V
90
10 V
60
15 V
20 V
30
V+ = +7.5 V
TA = 25_C
V– = 0 V
200
150
+10 V
100
+15 V
+20 V
50
0
0
–15
–10
–5
5
0
10
VD – Drain Voltage (V)
15
0
20
5
10
15
VD – Drain Voltage (V)
20
Input Switching Threshold
vs. V+ and V– Supply Voltages
Leakage Currents vs. Analog Voltage
10
TA = 25_C
TA = 25_C
10
8
IS(off)
6
ID(off)
V T (V)
I S, I D (pA)
0
ID(on)
–10
4
–20
2
–30
–15 –12
–9 –6 –3
0
3
6 9
12
VD or VS – Drain or Source Voltage (V)
0
15
0
Supply Currents vs. Switching Frequency
(All Inputs Active)
5
10
15
V+, V– Positive & Negative Supplies (V)
20
Input Switching Threshold vs. Positive
Supply Voltage
1000
8
15 V Supplies
TA = 25_C
V– = 0 V
TA = 25_C
7
800
5
600
V T (V)
I+, I– ( mA)
6
400
4
3
I–
2
200
I+
1
0
100
1k
10 k
100 k
f – Frequency (Hz)
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4-4
1M
0
5
10
15
V+ – Positive Supply Voltage (V)
Document Number: 70046
S-52882—Rev. E, 28-Apr-97
DG308A/DG309
Vishay Siliconix
+15 V
V+
VS = +3 V
D
S
VO
Logic
Input
tr <20 ns
tf <20 ns
12 V
50%
0V
tOFF
IN
12 V
GND
V–
CL
35 pF
RL
1 k
90%
Switch
Output
–15 V
VO = VS
VO
tON
RL
RL + rDS(on)
FIGURE 2. Switching Time
Single Supply Operation
The DG308A and DG309 will switch positive analog signals
while using a single positive supply. This will allow use in many
applications where only one supply is available. The trade-offs
or performance given up while using single supplies are:
1) increased rDS(on) and 2) slower switching speed. As stated
in the absolute maximum ratings section of the data sheet, the
analog voltage should not go above or below the supply
voltages which in single supply operation are V+ and 0 V.
Document Number: 70046
S-52882—Rev. E, 28-Apr-97
www.vishay.com FaxBack 408-970-5600
4-5
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