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Data
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1-88
DG308A
May 2001
File Number
3120.4
Quad Monolithic SPST, CMOS Analog
Switch
The DG308A quad monolithic SPST, CMOS switch is latch
proof and is designed to block signals up to 30V
P-P
when
OFF. Featuring low ON resistance, low power consumption,
and rail-to-rail analog signal range, this switch is ideally
suited for high speed switching applications in
communications, instrumentation and process control. The
DG308A has single and dual supply capability. The input
thresholds are CMOS compatible.
Features
• Low Power Consumption
• CMOS Compatible
•
±15V
Analog Signal Range
• Single or Dual Supply Capability
• Alternate Source
Functional Diagram
DG308A
Part Number Information
PART NUMBER
DG308ACJ
DG308ACY
TEMP.
RANGE (
o
C)
0 to 70
0 to 70
PACKAGE
16 Ld PDIP
16 Ld SOIC
PKG.
NO.
E16.3
M16.15
IN
2
IN
1
S
1
D
1
S
2
Pinout
DG308A
(PDIP, SOIC)
TOP VIEW
IN
3
D
2
S
3
D
3
S
4
IN
1
D
1
S
1
1
2
3
-
16 IN
2
15 D
2
14 S
2
13 V+ (SUB-
STRATE)
12 NC
11 S
3
10 D
3
9 IN
3
IN
4
D
4
V- 4
GND
S
4
D
4
IN
4
5
6
7
8
SWITCHES SHOWN FOR LOGIC “1” INPUT
TRUTH TABLE
LOGIC
0
1
Logic “0”
≤3.5V,
Logic “1”
≥
11V at V+ = 15V.
DG308A
OFF
ON
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2002. All Rights Reserved
DG308A
Absolute Maximum Ratings
V+ to V- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44V
V- to Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25V
Digital Inputs, V
S
, V
D
(Note 1). . . . . . . . . . . . . . (V-) -2V to (V+) +2V
or 30mA, Whichever Comes First
Continuous Current, (Any Terminal Except S). . . . . . . . . . . . . 30mA
Continuous Current, (S or D) . . . . . . . . . . . . . . . . . . . . . . . . . . 20mA
Peak Current, S or D (Pulsed 1ms, 10% Duty Cycle Max) . . . . . 70mA
Thermal Information
Thermal Resistance (Typical, Note 2)
θ
JA
(
o
C/W)
PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
90
SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
115
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . 150
o
C
Maximum Storage Temperature Range . . . . . . . . . . 65
o
C to 150
o
C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300
o
C
(SOIC - Lead Tips Only)
Operating Conditions
Temperature Range
“C” Suffix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0
o
C to 70
o
C
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTES:
1. Signals on S
X
, D
X
, or IN
X
exceeding V+ or V- will be clamped by internal diodes. Limit forward diode current to maximum current ratings.
2.
θ
JA
is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications
PARAMETER
DYNAMIC CHARACTERISTICS
Turn-ON Time, t
ON
Turn-OFF Time, t
OFF
Charge Injection, Q
OFF Isolation, OIRR
Source OFF Capacitance, C
S(OFF)
Drain OFF Capacitance, C
D(OFF)
Channel ON Capacitance,
C
D(ON)
+ C
S(ON)
DIGITAL INPUT CHARACTERISTICS
Input Current with Voltage High, I
IH
Input Current with Voltage Low, I
IL
V
IN
= 15V, Full Temperature Range
V
IN
= 0V, Full Temperature Range
-
-1
0.001
-0.001
1
-
µA
µA
See Figure 1
See Figure 1
C
L
= 1µF, R
S
= 0, V
S
= 0V
V
IN
= 0V, R
L
= 75Ω, V
S
= 2V
P-P
, f = 500kHz
(Note 5)
f = 140kHz
V
S
= 0V
V
IN
= 0V
V
D
= 0V
V
IN
= 0V
V
S
= V
D
= 0V
V
IN
= 15V
-
-
-
-
-
-
-
130
90
-10
78
11
8
27
200
150
-
-
-
-
-
ns
ns
pC
dB
pF
pF
pF
V+ = 15V, V- = -15V, GND = 0V, T
A
= 25
o
C
TEST CONDITIONS
(NOTE 4)
MIN
(NOTE 3)
TYP
(NOTE 4)
MAX
UNITS
ANALOG SWITCH CHARACTERISTICS
Analog Signal Range, V
ANALOG
Drain-Source ON Resistance, r
DS(ON)
V
IN
= 11V
I
S
= -1mA, V
D
= +10V
I
S
= 1mA, V
D
= -10V
Source OFF Leakage Current, I
S(OFF)
V
IN
= 3.5V
V
S
= 14V, V
D
= -14V
V
S
= -14V, V
D
= 14V
Drain OFF Leakage Current, I
D(OFF)
V
S
= -14V, V
D
= 14V
V
S
= 14V, V
D
= -14V
Channel ON Leakage Current, I
D(ON)
V
IN
= 11V
V
D
= V
S
= 14V
V
D
= V
S
= -14V
-15
-
-
-
-5
-
-5
-
-5
-
60
60
0.1
-0.1
0.1
-0.1
0.1
-0.1
15
100
100
5
-
5
-
5
-
V
Ω
Ω
nA
nA
nA
nA
nA
nA
3
DG308A
Electrical Specifications
PARAMETER
POWER SUPPLY CHARACTERISTICS
Positive Supply Current, I+
Negative Supply Current, I-
NOTES:
3. Typical values are for design aid only, not guaranteed and not subject to production testing.
4. The algebraic convention whereby the most negative value is a minimum, and the most positive is a maximum, is used in this data sheet.
5. OFF isolation = 20 Log V
D
/V
S
, where V
S
= input to OFF switch, and V
D
= output.
All Channels ON or OFF
V
IN
= 0V or 15V
-
-100
0.001
-0.001
100
-
µA
µA
V+ = 15V, V- = -15V, GND = 0V, T
A
= 25
o
C
(Continued)
TEST CONDITIONS
(NOTE 4)
MIN
(NOTE 3)
TYP
(NOTE 4)
MAX
UNITS
Test Circuit and Waveforms
V
O
= V
S
V+
S
V
S
= 3V
IN
R
L
1kΩ
C
L
35pF
D
V
O
SWITCH
INPUT
90%
SWITCH
OUTPUT 0V
GND
V-
-15V
t
ON
t
OFF
90%
R
L
R
L
+ r
DS(ON)
LOGIC
INPUT
t
r
< 20ns
t
f
< 20ns 0V
15V
50%
50%
LOGIC “1” = SWITCH ON
15V
FIGURE 1. t
ON
AND t
OFF
TEST CIRCUIT AND MEASUREMENT POINTS
4
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