Vishay DG408L Precision 8-ch/dual 4-ch low voltage analog multiplexer Datasheet

DG408L/409L
Vishay Siliconix
Precision 8-Ch/Dual 4-Ch Low Voltage Analog Multiplexers
FEATURES
BENEFITS
APPLICATIONS
D Pin-For-Pin compatibility with DG408/409
D 2.7- to 12-V Single Supply or
"3- to "6-V Dual Supply Operation
D Lower On-Resistance: rDS(on) - 17 Typ.
D Fast Switching: tON - 38 ns, tOFF - 18 ns
D Break-Before-Make Guaranteed
D Low Leakage: IS(off) - 0.2 nA Max.
D Low Charge Injection: 1 pC
D TTL, CMOS, LV Logic (3 V) Compatible
D -82 dB Off-Isolation at 1 MHz
D 2000-V ESD Protection (HBM)
D
D
D
D
D
D
D
D
D
D
D
High Accuracy
Single and Dual Power Rail Capacity
Wide Operating Voltage Range
Simple Logic Interface
Data Acquisition Systems
Battery Operated Equipment
Portable Test Equipment
Sample and Hold Circuits
Communication Systems
SDSL, DSLAM
Audio and Video Signal Routing
DESCRIPTION
The DG408L/409L are low voltage pin -for-pin compatible
companion devices to the industry standard DG408/409 with
improved performance.
Using BiCMOS wafer fabrication technology allows the
DG408L/409L to operate on single and dual supplies. Single
supply voltage ranges from 3- to 12-V while dual supply
operation is recommended with "3 to "6 V.
The DG408L is an 8-channel single-ended analog multiplexer
designed to connect one of eight inputs to a common output as
determined by a 3-bit binary address (A0, A1, A2). The DG409L
is a dual 4-channel differential analog multiplexer designed to
connect one of four differential inputs to a common dual output
as determined by its 2-bit binary address (A0, A1).
Break-before-make switching action to protect against
momentary crosstalk between adjacent channels.
The DG408L/409L provides lower on-resistance, faster
switching time, lower leakage, less power consumption and
higher off-Isolation than the DG408/409.
FUNCTIONAL BLOCK DIAGRAMS AND PIN CONFIGURATIONS
DG408L
DG409L
Dual-In- Line, SOIC and TSSOP
A0
EN
VS1
S2
S3
S4
D
16
1
2
Decoders/Drivers
15
3
14
4
13
5
12
6
11
7
10
8
9
Top View
Document Number: 71342
S-03720—Rev. D, 07-Apr-03
Dual-In- Line, SOIC and TSSOP
A1
A0
A2
EN
GND
V-
V+
S1a
S5
S2a
S6
S3a
S7
S4a
S8
Da
16
1
2
Decoders/Drivers
15
3
14
4
13
5
12
6
11
7
10
8
9
A1
GND
V+
S1b
S2b
S3b
S4b
Db
Top View
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1
DG408L/409L
Vishay Siliconix
TRUTH TABLES AND ORDERING INFORMATION
TRUTH TABLE DG408L
TRUTH TABLE DG409L
A2
A1
A0
EN
On Switch
A1
A0
EN
On Switch
X
X
X
0
None
X
X
0
None
0
0
0
1
1
0
0
1
1
0
0
1
1
2
0
1
1
2
0
1
0
1
3
1
0
1
3
0
1
1
1
4
1
1
1
4
1
0
0
1
5
1
0
1
1
6
1
1
0
1
7
1
1
1
1
8
Logic “0” = VAL v 0.8 V
Logic “1” = VAH w 2.4 V
X = Don’t Care
For low and high voltage levels for VAX and VEN consult “Digital Control” parameters for specific V+ operation.
ORDERING INFORMATION DG408L
Temp Range
- 40 to 85_C
Package
Part Number
16-Pin SOIC
DG408LDY
16-Pin TSSOP
DG408LDQ
ORDERING INFORMATION DG409L
Temp Range
- 40 to 85_C
Package
Part Number
16-Pin SOIC
DG409LDY
16-Pin TSSOP
DG409LDQ
DG408LAK
16 Pin CerDIP
16-Pin
- 55 to 125_C
LCC-20*
DG408LAK/883
DG409LAK
16 Pin CerDIP
16-Pin
DG408LAZ/883
*Block Diagram and Pin Configuration not shown.
DG409LAK/883
- 55 to 125_C
LCC-20*
DG409LAZ/883
*Block Diagram and Pin Configuration not shown.
ABSOLUTE MAXIMUM RATINGS
Voltage Referenced to V-
Power Dissipation (Package)b
V+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 V
16-Pin Plastic TSSOPc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 650 mW
GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Digital Inputsa, VS, VD . . . . . . . . . . . . . . . . . . . . . . (V- ) - 0.3 V to (V+) +0.3 V
Current (Any Terminal) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 mA
Peak Current, S or D
(Pulsed at 1 ms, 10% Duty Cycle Max) . . . . . . . . . . . . . . . . . . . . . . . . 100 mA
Storage Temperature: (A Suffix) . . . . . . . . . . . . . . . . . . . . . . . . . - 65 to 150_C
(D Suffix) . . . . . . . . . . . . . . . . . . . . . . . . - 65 to 125_C
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2
16-Pin Narrow SOICc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 600 mW
16-Pin CerDIPd . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 900 mW
LCC-20e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 750 mW
Notes
a. Signals on SX, DX, Ax, or EN exceeding V+ or V- will be clamped by
internal diodes. Limit forward diode current to maximum current ratings.
b. All leads soldered or welded to PC board.
c. Derate 7.6 mW/_C above 75_C.
d. Derate 12 mW/_C above 75_C.
e. Derate 10 mW/_C above 75_C.
Document Number: 71342
S-03720—Rev. D, 07-Apr-03
DG408L/409L
Vishay Siliconix
SPECIFICATIONS (SINGLE SUPPLY 12 V)
Test Conditions
Unless Otherwise Specified
Parameter
Symbol
V+ = 12 V
V, "10%,
"10% VV =0V
VEN = 0.8 V or 2.4 Vf
Tempb
Typd
A Suffix
D Suffix
- 55 to 125_C
- 40 to 85_C
Minc Maxc Minc Maxc
Unit
Analog Switch
Analog Signal Rangee
Drain-Source On-Resistance
rDS(on) Matching
Between Channelsg
On-Resistance Flatnessi
VANALOG
0
12
0
12
Room
Full
17
29
38
29
35
Room
1
3
3
rFLAT(on)
Room
3
IS(off)
Room
Full
-1
- 15
1
15
-1
- 10
1
10
Room
Full
-1
- 15
1
15
-1
- 10
1
10
Room
Full
-1
- 15
1
15
-1
- 10
1
10
2.4
rDS(on)
rDS
Switch Off Leakage Current
ID(off)
Channel On Leakage Current
Full
ID(on)
VD = 10.8 V, VD = 2 V or 9 V, IS = 10 mA
Sequence Each Switch On
V
VD = 10.8 V, VD = 2 V or 9 V, IS = 10 mA
VEN = 0 V, VD = 11 V or 1 V
VS = 1 V or 11 V
VS = VD = 1 V or 11 V
7
7
nA
Digital Control
Logic High Input Voltage
VINH
Full
Logic Low Input Voltage
VINL
Full
Input Current
2.4
0.8
- 1.5
1.5
0.8
IIN
VAX = VEN = 2.4 V or 0.8 V
Full
-1
1
Transition Time
tTRANS
VS1 = 8 V, VS8 = 0 V, (DG408L)
VS1b = 8 V, VS4b = 0 V, (DG409L)
See Figure 2
Room
Full
30
Break-Before-Make Time
tOPEN
VS(all) = VDA = 5 V, See Figure 4
Room
Full
11
Room
Full
38
55
60
55
60
Room
Full
18
25
35
25
30
Room
1
5
5
Room
- 70
Room
- 82
V
A
Dynamic Characteristics
Enable Turn-On Time
tON(EN)
Enable Turn-Off Time
tOFF(EN)
VAX = 0 V, VS1 = 5 V (DG408L)
VAX = 0 V,
V VS1b = 5 V (DG409L)
See Figure 3
Q
CL = 1 nF, VGEN = 0 V, RGEN = 0 Charge Injectione
1
60
65
1
ns
Off Isolatione, h
OIRR
Crosstalke
XTALK
Source Off Capacitancee
CS(off)
f = 1 MHz, VS = 0 V, VEN = 0 V
Room
7
Drain Off Capacitancee
CD(off)
f = 1 MHz, VD = 2.4 V, VEN = 0 V
Room
20
Drain On Capacitancee
CD(on)
f = 1 MHz, VD = 0 V, VEN = 2.4 V
(DG409L only)
Room
31
VEN = VA = 0 V or 5 V
Room
0.2
f = 100 kHz,
kHz RL = 1 k
60
68
pC
dB
pF
Power Supplies
Power Supply Range
V+
Power Supply Current
I+
Document Number: 71342
S-03720—Rev. D, 07-Apr-03
3
12
0.7
3
12
V
0.7
mA
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DG408L/409L
Vishay Siliconix
SPECIFICATIONS (DUAL SUPPLY V+ = 5 V, V = 5 V)
Test Conditions
Unless Otherwise Specified
Parameter
Symbol
V+ = 5 V
V, V
V- = - 5 V "10%,
"10% VV =0V
VEN = 0.6 V or 2.4 Vf
Tempb
Typd
A Suffix
D Suffix
- 55 to 125_C
- 40 to 85_C
Minc Maxc Minc Maxc
Unit
Analog Switch
Analog Signal Rangee
Drain-Source On-Resistance
VANALOG
rDS(on)
IS(off)
Switch Off Leakage Current a
ID(off)
Channel On Leakage
Current a
ID(on)
Full
VD = "3.5 V, IS = 10 mA
Sequence Each Switch On
V+ = 5.5 V, V- = 5.5 V
VEN = 0 V, VD = "4.5 V, VS = #4.5 V
V+ = 5.5 V, V- = 5.5 V
VEN = 2.4 V, VD = "4.5 V, VS = #4.5 V
Room
Full
-5
20
5
-5
40
50
5
V
40
50
Room
Full
-1
- 15
1
15
-1
- 10
1
10
Room
Full
-1
- 15
1
15
-1
- 10
1
10
Room
Full
-1
- 15
1
15
-1
- 10
1
10
2.4
nA
Digital Control
Logic High Input Voltage
VINH
Full
Logic Low Input Voltage
VINL
Full
Input Currenta
2.4
0.6
- 1.5
1.5
0.6
IIN
VAX = VEN = 2.4 V or 0.6 V
Full
-1
1
Transition Timee
tTRANS
VS1 = 3.5 V, VS8 = - 3.5 V, (DG408L)
VS1b = 3.5 V, VS4b = - 3.5 V, (DG409L)
See Figure 2
Room
Full
30
Break-Before-Make Timee
tOPEN
VS(all) = VDA = 3.5 V, See Figure 4
Room
Full
8
Enable Turn-On Timee
tON(EN)
Room
Full
25
55
68
55
60
Timee
tOFF(EN)
Room
Full
20
40
50
40
45
V
A
Dynamic Characteristics
Enable Turn-Off
VAX = 0 V, VS1 = 3.5 V (DG408L)
VAX = 0 V,
V VS1b = 3.5
3 5 V (DG409L)
See Figure 3
CS(off)
f = 1 MHz, VS = 0 V, VEN = 0 V
Room
6
Drain Off Capacitancee
CD(off)
f = 1 MHz, VD = 0 V, VEN = 0 V
Room
15
Drain On Capacitancee
CD(on)
f = 1 MHz, VD = 0 V, VEN = 2.4 V
Room
29
4
1
60
65
1
ns
Source Off Capacitancee
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60
78
pF
Document Number: 71342
S-03720—Rev. D, 07-Apr-03
DG408L/409L
Vishay Siliconix
SPECIFICATIONS (SINGLE SUPPLY 5 V)
Test Conditions
Unless Otherwise Specified
Parameter
Symbol
A Suffix
D Suffix
- 55 to 125_C
- 40 to 85_C
V+ = 5 V, "10%, V- = 0 V
VEN = 0.6 V or 2.4 Vf
Tempb
V+ = 4.5 V, VD or VS = 1 V or 3.5 V, ID =
5 mA
Room
Full
35
49
62
40
62
Room
1.5
3
3
Typd
Minc Maxc Minc Maxc
Unit
Analog Switch
Analog Signal Rangee
Drain-Source On-Resistance
rDS(on) Matching
Between Channelsg
On-Resistance Flatnessi
VANALOG
rDS(on)
rDS
0
5
0
5
Room
IS(off)
Room
Full
-1
- 15
1
15
-1
- 10
1
10
Room
Full
-1
- 15
1
15
-1
- 10
1
10
Room
Full
-1
- 15
1
15
-1
- 10
1
10
Full
2.4
ID(off)
ID(on)
V
V+ = 4.5 V, VD = 1 V or 3.5 V, IS = 5 mA
rFLAT(on)
Switch Off Leakage Current a
Channel On Leakage Currenta
Full
V+ = 5.5 V, VS = 1 V or 4 V
VD = 4 V or 1 V
V+ = 5.5 V, VD = VS = 1 V or 4 V
Sequence Each Switch On
4
4
nA
Digital Control
Logic High Input Voltage
VINH
Logic Low Input Voltage
VINL
Input Currenta
V+ = 5 V
Full
2.4
0.6
- 1.5
1.5
0.6
IIN
VAX = VEN = 2.4 V or 0.6 V
Full
-1
1
Transition Timee
tTRANS
VS1 = 3.5 V, VS8 = 0 V, (DG408L)
VS1b = 3.5 V, VS4b = 0 V, (DG409L)
See Figure 2
Room
Full
44
Break-Before-Make Timee
tOPEN
VS(all) = VDA = 3.5 V, See Figure 4
Room
Full
17
Room
Full
43
60
70
60
65
Room
Full
26
45
60
45
50
Room
1
5
5
Room
- 70
Room
- 80
V
A
Dynamic Characteristics
Enable Turn-On
Timee
tON(EN)
Enable Turn-Off
Timee
tOFF(EN)
VAX = 0 V, VS1 = 3.5 V (DG408L)
VAX = 0 V,
V VS1b = 3.5
3 5 V (DG409L)
See Figure 3
Q
CL = 1 nF, RGEN = 0 , VGEN = 0 V
Charge Injectione
OIRR
Crosstalke
XTALK
Source Off Capacitancee
CS(off)
f = 1 MHz, VS = 0 V, VEN = 0 V
Room
8
Drain Off Capacitancee
CD(off)
f = 1 MHz, VD = 0 V, VEN = 0 V
Room
21
Drain On Capacitancee
CD(on)
f = 1 MHz, VD = 0 V, VEN = 2.4 V
(DG409L only)
Room
32
Document Number: 71342
S-03720—Rev. D, 07-Apr-03
1
125
135
1
ns
Off Isolatione, h
RL = 1 k
k f = 100 kHz
125
138
pC
dB
pF
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DG408L/409L
Vishay Siliconix
SPECIFICATIONS (SINGLE SUPPLY 3 V)
Test Conditions
Unless Otherwise Specified
Parameter
V+ = 3 V, "10%, V- = 0 V
VEN = 0.4 V or 2.0 Vf
Tempb
VANALOG
Full
rDS(on)
V+ = 2.7 V, VD = 0.5 or 2.2 V, IS = 5 mA
Room
Full
Symbol
Typd
A Suffix
D Suffix
- 55 to 125_C
- 40 to 85_C
Minc Maxc Minc Maxc
Unit
Analog Switch
Analog Signal Rangee
Drain-Source On-Resistance
IS(off)
Switch Off Leakage Current a
V+ = 3.3
3 3 V,
V VS = 2 or 1 V,
V VD = 1 or 2 V
ID(off)
Channel On Leakage Currenta
ID(on)
V+ = 3.3 V, VD = VS = 1 or 2 V
Sequence Each Switch On
0
60
3
0
80
105
3
V
80
100
Room
Full
-1
- 15
1
15
-1
- 10
1
10
Room
Full
-1
- 15
1
15
-1
- 10
1
10
Room
Full
-1
- 15
1
15
-1
- 10
1
10
2
nA
Digital Control
Logic High Input Voltage
VINH
Full
Logic Low Input Voltage
VINL
Full
Input Current a
2
0.4
- 1.5
0.4
IIN
VAX = VEN = 2.4 V or 0.4 V
Full
1.5
-1
1
Transition Time
tTRANS
VS1 = 1.5 V, VS8 = 0 V, (DG408L)
VS1b = 1.5 V, VS4b = 0 V, (DG409L)
See Figure 2
Room
Full
75
Break-Before-Make Time
tOPEN
VS(all) = VDA = 1.5 V, See Figure 4
Room
Full
32
Enable Turn-On Time
tON(EN)
70
95
115
95
105
Enable Turn-Off Time
tOFF(EN)
VAX = 0 V, VS1 = 1.5 V (DG408L)
VAX = 0 V,
V VS1b = 1.5
1 5 V (DG409L)
See Figure 3
Room
Full
Room
Full
55
100
115
100
105
Q
CL = 1 nF, RGEN = 0 , VGEN = 0 V
Room
0.4
5
5
Room
- 70
Room
- 79
V
A
Dynamic Characteristics
Charge Injectione
150
175
1
1
ns
Off Isolatione, h
OIRR
Crosstalke
XTALK
Source Off Capacitancee
CS(off)
f = 1 MHz, VS = 0 V, VEN = 0 V
Room
8
Drain Off Capacitancee
CD(off)
f = 1 MHz, VD = 0 V, VEN = 0 V
Room
19
Drain On Capacitancee
CD(on)
f = 1 MHz, VD = 0 V, VEN = 2 V
(DG409L only)
Room
33
f = 100 kHz,
kHz RL = 1 k
150
175
pC
dB
pF
Notes
a. Leakage parameters are guaranteed by worst case test condition and not subject to production test.
b. Room = 25_C, Full = as determined by the operating temperature suffix.
c. The algebraic convention whereby the most negative value is a minimum and the most positive a maximum, is used in this data sheet.
d. Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing.
e. Guaranteed by design, not subject to production test.
f.
VIN = input voltage to perform proper function.
g. rDS(on) = rDS(on) Max - rDS(on) Min.
h. Worst case isolation occurs on Channel 4 do to proximity to the drain pin.
i.
rDS(on) flatness is measured as the difference between the minimum and maximum measured values across a defined Analog signal.
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Document Number: 71342
S-03720—Rev. D, 07-Apr-03
DG408L/409L
Vishay Siliconix
TYPICAL CHARACTERISTICS (25_C UNLESS NOTED)
rDS(on) vs. VD and Power Supply
rDS(on) vs. VD and Power Supply
25
rDS9on) - Drain-Source On-Resistnace ()
rDS9on) - Drain-Source On-Resistnace ()
80
70
60
V+ = 2.7 V
50
40
V+ = 4.5 V
30
V+ = 12 V
20
10
0
20
V+ = 5 V
V- = - 5 V
15
10
5
0
0
2
4
6
8
10
12
-5
-3
-1
VD - Drain Voltage (V)
Input Threshold vs. V+ Supply Voltage
5
rDS(on) vs. VD and Temperature
50
rDS9on) - Drain-Source On-Resistnace ()
Upper Threshold Limit
1.6
1.4
1.2
VT (V)
3
VD - Drain Voltage (V)
1.8
Low Threshold Limit
1.0
0.8
0.6
0.4
0.2
0.0
85_C
125_C
40
30
25_C
- 55_C
20
10
0
0
2
4
6
8
10
12
14
0
1
2
3
4
5
6
VD - Drain Voltage (V)
V+ - Positive Supply Voltage (V)
rDS(on) vs. VD and Temperature
Switching Time vs. Positive Supply Voltage
70
35
60
30
85_C
25
Switching Speed (nS)
rDS9on) - Drain-Source On-Resistnace ()
1
125_C
20
25_C
15
- 55_C
10
50
40
tTRANS
30
tON
20
tOFF
10
5
0
0
-6
-4
-2
0
2
VD - Drain Voltage (V)
Document Number: 71342
S-03720—Rev. D, 07-Apr-03
4
6
0
2
4
6
8
10
12
14
V+ - Positive Supply Voltage (V)
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DG408L/409L
Vishay Siliconix
TYPICAL CHARACTERISTICS (25_C UNLESS NOTED)
Switching Time vs.
Dual Power Supply Voltage
Leakage Current vs. Analog Voltage
10
40
35
IS(off)
Switching Speed (nS)
Leakage Current (pA)
0
- 10
ID(off)
ID(on)
- 20
30
tON
25
tTRANS
20
tOFF
15
10
- 30
5
- 40
0
-5
-3
-1
1
3
5
3
4
VD, VS - Analog Voltage (V)
5
6
" - Dual Power Supply Voltage (V)
Insertion Loss, Off Isolation and Crosstalk
vs. Frequency (Single Supply)
Charge Injection vs. Analog Voltage
1.0
10
CL = 1000 pF
- 10
V+ = 12 V
V- = 0 V
V+ = 3 V
V- = 0 V
RL = 50 - 30
Loss (dB)
Q - Charge Injection (pC)
0.8
0.6
- 50
Insertion Loss
- 3 dB = 280 MHz
Off Isolation
0.4
V+ = 5 V
V- = - 5 V
- 70
V+ = 5 V
V- = 0 V
0.2
Crosstalk
- 90
0.0
- 110
-5
0
5
10
0.1
10
1
VS - Source Voltage (V)
Drain/Source Capacitance vs. Analog Voltage
35
CD, CS - Drain/Source Capacitance (pF)
CD, CS - Drain/Source Capacitance (pF)
1000
Drain/Source Capacitance vs. Analog Voltage
35
CD(on)
30
V+ = 12 V
V- = 0 V
25
20
CD(off)
15
10
CS(off)
5
0
CD(on)
30
V+ = 5 V
V- = - 5 V
25
20
CD(off)
15
10
CS(off)
5
0
0
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8
100
Frequency (MHz)
2
4
6
8
10
12
-5
-4
-3
-2
-1
0
1
2
3
4
5
Document Number: 71342
S-03720—Rev. D, 07-Apr-03
DG408L/409L
Vishay Siliconix
SCHEMATIC DIAGRAM (TYPICAL CHANNEL)
V+
GND
D
A0
V+
VLevel
Shift
AX
Decode/
Drive
S1
V+
EN
Sn
V-
FIGURE 1.
TEST CIRCUITS
V+
V+
A2
S1
A1
50 3V
VS1
S2 - S7
A0
DG408L
EN
S8
VS8
VO
D
GND
V-
Logic
Input
35 pF
300 VAX
tr <20 ns
tf <20 ns
3V
50%
0V
VVS1
VO
A1
VO
Db
EN
GND
V300 tTRANS
tTRANS
VSB4
DG409L
3V
90%
VS8
S1a - S4a, Da
V+
S4b
50 50%
VS1
S1b
A0
90%
Switch
Output
V+
35 pF
S1 ON
S8 ON (DG408L)
or
S4 ON (DG409L)
V-
FIGURE 2. Transition Time
Document Number: 71342
S-03720—Rev. D, 07-Apr-03
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DG408L/409L
Vishay Siliconix
TEST CIRCUITS
V+
V+
VS1
S1
EN
S2 - S8
A0
DG408L
A1
A2
GND
V-
50 Logic
Input
VO
D
300 tr <20 ns
tf <20 ns
3V
50%
0V
35 pF
tON(EN)
V-
tOFF(EN)
0V
10%
V+
Switch
Output
VO
V+
90%
VS1
S1b
VO
EN
S1a - S4a, Da
S2b - S4b
A0
DG409L
A1
Db
GND
VO
V-
50 300 35 pF
V-
FIGURE 3. Enable Switching Time
bbm.5
3V
EN
V+
4/9
All S and Da
A0
VS1
tr <20 ns
tf <20 ns
3V
50%
0V
DG408L
DG409L
A1
A2
Db, D
GND
50 Logic
Input
VO
VS
V-
V-
300 80%
Switch
Output
35 pF
VO
0V
tOPEN
FIGURE 4. Break-Before-Make Interval
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Document Number: 71342
S-03720—Rev. D, 07-Apr-03
DG408L/409L
Vishay Siliconix
TEST CIRCUITS
V+
Rg
V+
SX
Logic
Input
EN
Vg
OFF
ON
OFF
0V
A0
Channel
Select
3V
VO
D
A1
CL
1 nF
A2
GND
V-
VO
Switch
Output
VO is the measured voltage due to charge transfer
error Q, when the channel turns off.
V-
Q = CL x VO
FIGURE 5. Charge Injection
V+
V+
VIN
VIN
V+
SX
VS
Rg = 50 V+
S1
SX
VS
S8
S8
A0
D
VO
A0
Rg = 50 A1
A2
EN
GND
RL
1 k
V-
D
A2
GND
V-
FIGURE 7. Crosstalk
V+
V+
V+
V+
Rg = 50 S1
Meter
A2
A0
D
VO
A1
Channel
Select
S8
A1
A0
A2
GND
EN
V-
VOUT
VIN
FIGURE 6. Off Isolation
S1
RL
1 k
V-
Crosstalk = 20 log
VIN
VS
EN
V-
VOUT
Off Isolation = 20 log
VO
A1
RL
1 k
VInsertion Loss = 20 log
D
GND
VOUT
EN
V-
HP4192A
Impedance
Analyzer
or Equivalent
f = 1 MHz
V-
VIN
FIGURE 8. Insertion Loss
Document Number: 71342
S-03720—Rev. D, 07-Apr-03
FIGURE 9. Source Drain Capacitance
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