_______________General Description
Maxim's redesigned DG401/DG403/DG405 analog
switches now feature guaranteed low on-resistance
matching between switches (2
max) and guaranteed
on-resistance flatness over the signal range (3
max).
These low on-resistance switches (20
typ) conduct
equally well in either direction and are guaranteed to
have low charge injection (15pC max). The new design
offers lower off leakage current over temperature (less
than 5nA at +85°C).
The DG401/DG403/DG405 are dual, high-speed
switches. The single-pole/single-throw DG401 and
double-pole/single-throw DG405 are normally open
dual switches. The dual, single-pole/double-throw
DG403 has two normally open and two normally closed
switches. Switching times are 150ns max for t
ON
and
100ns max for t
OFF
, with a maximum power consump-
tion of 35µW. These devices operate from a single
+10V to +30V supply, or bipolar supplies of ±4.5V to
±20V. Maxim's improved DG401/DG403/DG405 are
fabricated with a 44V silicon-gate process.
________________________Applications
Sample-and-Hold Circuits
Test Equipment
Guidance and Control Systems
Heads-Up Displays
Communications Systems
PBX, PABX
Battery-Operated Systems
Audio Signal Routing
Military Radios
______________________New Features
o
Plug-In Upgrade for Industry-Standard
DG401/DG403/DG405
o
Improved r
DS(ON)
Match Between Channels (2
max)
o
Guaranteed r
FLAT(ON)
Over Signal Range (3
max)
o
Improved Charge Injection (15pC max)
o
Improved Off Leakage Current Over Temperature
(<5nA at +85°C)
__________________Existing Features
o
Low r
DS(ON)
(30
max)
o
Single-Supply Operation +10V to +30V
Bipolar-Supply Operation ±4.5V to ±20V
o
Low Power Consumption (35µW max)
o
Rail-to-Rail Signal Handling Capability
o
TTL/CMOS-Logic Compatible
______________Ordering Information
Ordering Information continued on last page.
*Contact factory for dice specifications.
DG401/DG403/DG405
Improved, Dual, High-Speed Analog Switches
________________________________________________________________ Maxim Integrated Products
1
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
S1
IN1
V-
GND
N.C.
N.C.
N.C.
D1
TOP VIEW
DG401
V
L
V+
IN2
S2
D2
N.C.
N.C.
N.C.
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
S1
IN1
V-
GND
S3
D3
N.C.
D1
DG403
V
L
V+
IN2
S2
D2
N.C.
D4
S4
DIP/SO
DIP/SO
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
S1
IN1
V-
GND
S3
D3
N.C.
D1
DG405
V
L
V+
IN2
S2
D2
N.C.
D4
S4
DIP/SO
DG401
LOGIC
SWITCH
0
1
OFF
ON
DG403
LOGIC
SWITCHES 1, 2
0
1
OFF
ON
DG405
LOGIC
SWITCH
0
1
OFF
ON
SWITCHES 3, 4
ON
OFF
SWITCHES SHOWN FOR LOGIC "0" INPUT
N.C. = NOT INTERNALLY CONNECTED
LCC packages on last page.
_____________________Pin Configurations/Functional Diagrams/Truth Tables
19-4727; Rev 2; 6/99
PART
TEMP. RANGE
PIN PACKAGE
DG401
CJ
0°C to +70°C
16 Plastic DIP
DG401CY
0°C to +70°C
16 Narrow SO
DG401C/D
0°C to +70°C
Dice*
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
T
A
= T
MIN
to T
MAX
V+ = 16.5V, V- = -16.5V,
V
D
= 15.5V,
V
S
= ±15.5V,
V+ = 16.5V, V- = -16.5V,
V
D
= ±15.5V,
V
S
= 15.5V
Improved, Dual, High-Speed Analog Switches
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V+ = 15V, V- = -15V, V
L
= +5V, GND = 0V, V
INH
= +2.4V, V
INL
= +0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
DG401/DG403/DG405
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.
Voltage Referenced to V-
V+.......................................................................................44V
GND ...................................................................................25V
V
L
.................................................(GND - 0.3V) to (V+ + 0.3V)
Digital Inputs, V
S
, V
D
(Note 1) .......(V- - 2V) to (V+ + 2V) or 20mA
(whichever occurs first)
Continuous Current (any terminal) ......................................30mA
Continuous Current, S or D .................................................20mA
Peak Current, S or D
(pulsed at 1ms, 10% duty cycle max) ..........................100mA
Continuous Power Dissipation (T
A
= +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
16-Pin CERDIP (derate 10.00mW/°C above 70°C) .......800mW
20-Pin LCC (derate 9.09mW/°C above +70°C) ............727mW
Operating Temperature Ranges
DG40_C_ .............................................................0°C to +70°C
DG40_D_ ..........................................................-40°C to +85°C
DG40_A_ ........................................................-55°C to +125°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10sec) .............................+300°C
PARAMETER
SYMBOL
CONDITIONS
TEMP.
RANGE
MIN
TYP
MAX
(Note 2)
UNITS
Analog Signal Range
V
ANALOG
(Note 3)
-15
+15
V
C,D
20
45
A
20
30
C,D
55
Drain-Source
On-Resistance
r
DS(ON)
V+ = 13.5V, V- = -13.5V,
I
S
= -10mA,
V
D
= ±10V,
V
INH
= 2.4V,
V
INL
= 0.8V
A
45
0.5
2
Drain-Source
On-Resistance Match
Between Channels (Note 4)
r
DS(ON)
V+ = 15V, V- = -15V,
I
S
= -10mA,
V
D
= ±10V
C, D, A
On-Resistance Flatness
(Note 4)
r
FLAT(ON)
V+ = 15V, V- = -15V,
I
S
= -10mA,
V
D
= ±5V, 0V
C, D, A
3
C, D
-0.50
-0.01
0.50
A
-0.25
-0.01
0.25
C, D
-5
5
Source-Off
Leakage Current
(Note 7)
I
S(OFF)
A
-10
10
nA
C, D
-0.50
-0.01
0.50
A
-0.25
-0.01
0.25
C, D
-5
5
Drain-Off
Leakage Current
(Note 7)
I
D(OFF)
A
-10
10
nA
C, D
-1.0
-0.04
1.0
A
-0.4
-0.04
0.4
C, D
-10
10
Drain-On
Leakage Current
(Note 7)
I
D(ON)
or
I
S(ON)
V+ = 16.5V, V- = -16.5V,
V
D
= ±15.5V,
V
S
= ±15.5V
A
-20
20
nA
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= T
MIN
to T
MAX
3
6
±
SWITCH
±
DG401/DG403/DG405
Improved, Dual, High-Speed Analog Switches
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 15V, V- = -15V, V
L
= +5V, GND = 0V, V
INH
= +2.4V, V
INL
= +0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
Note 2:
This data sheet uses the algebraic convention, where the most negative value is a minimum and the most positive value is a
maximum.
Note 3:
Guaranteed by design.
Note 4:
r
ON
=
r
ON
(max) -
r
ON
(min). On-resistance match between channels and flatness are guaranteed only with specified
voltages. Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured at the
extremes of the specified analog signal range.
Note 5:
Off isolation = 20log (V
S
/V
D
), V
D
= output, V
S
= input to off switch.
Note 6:
Between any two switches.
Note 7:
Leakage parameters I
S(OFF)
, I
D(OFF)
, and I
D(ON)
are 100% tested at the maximum rated hot temperature and guaranteed by
correlation at +25°C.
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
(Note 2)
UNITS
Input Current with Input Voltage High
I
INH
V
IN
= 2.4V, all others = 0.8V
-1.0
0.005
1.0
µA
Input Current with Input Voltage Low
I
INL
V
IN
= 0.8V, all others = 2.4V
-1.0
0.005
1.0
µA
Power-Supply Range
±4.5
±20
V
Positive Supply Current
I+
All channels on or off,
V+ = 16.5V, V- = -16.5V,
V
IN
= 0V or 5V
T
A
= +25°C
-1.0
0.01
1.0
µA
Negative Supply Current
I-
All channels on or off,
V+ = 16.5V, V- = -16.5V,
V
IN
= 0V or 5V
T
A
= +25°C
-1.0
0.01
1.0
µA
Logic Supply Current
I
L
All channels on or off,
V+ = 16.5V, V- = -16.5V,
V
IN
= 0V or 5V
T
A
= +25°C
-1.0
0.01
1.0
µA
Ground Current
I
GND
All channels on or off,
V+ = 16.5V, V- = -16.5V,
V
IN
= 0V or 5V
T
A
= +25°C
-1.0
0.01
1.0
µA
Turn-On Time
t
ON
Figure 2
T
A
= +25°C
100
150
ns
Turn-Off Time
t
OFF
Figure 2
T
A
= +25°C
60
100
ns
Break-Before-Make Delay (Note 3)
t
D
DG403 only,
Figure 3
T
A
= +25°C
10
20
ns
Charge Injection (Note 3)
Q
C
L
= 1.0nF, V
GEN
= 0V,
R
GEN
= 0
, Figure 4
T
A
= +25°C
10
15
pC
Off Isolation (Note 5)
OIRR
R
L
= 100
, C
L
= 5pF,
f = 1MHz, Figure 5
T
A
= +25°C
72
dB
Crosstalk (Note 6)
R
L
= 50
, C
L
= 5pF,
f = 1MHz, Figure 6
T
A
= +25°C
90
dB
Source-Off Capacitance
C
S(OFF)
f = 1MHz, Figure 7
T
A
= +25°C
12
pF
Drain-Off Capacitance
C
D(OFF)
f = 1MHz, Figure 7
T
A
= +25°C
12
pF
Channel-On Capacitance
C
D(ON)
or C
S(ON)
f = 1MHz, Figure 8
T
A
= +25°C
39
pF
T
A
= T
MIN
to T
MAX
T
A
= T
MIN
to T
MAX
T
A
= T
MIN
to T
MAX
T
A
= T
MIN
to T
MAX
-5.0
5.0
-5.0
5.0
-5.0
5.0
-5.0
5.0
INPUT
SUPPLY
DYNAMIC
DG401/DG403/DG405
Improved, Dual, High-Speed Analog Switches
4
_______________________________________________________________________________________
__________________________________________Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)
50
55
20
-20
ON-RESISTANCE vs. V
D
(DUAL SUPPLIES)
25
45
MAX401-1
V
D
(V)
r
DS
(ON)
(
)
10
35
30
-10
0
20
40
15
10
5
A: V+ = 5V, V- = -5V
B: V+ = 10V, V- = -10V
C: V+ = 15V, V- = -15V
D: V+ = 20V, V- = -20V
A
B
C
D
35
5
-20
ON-RESISTANCE vs. V
D
AND
TEMPERATURE (DUAL SUPPLIES)
10
30
MAX401-2
V
D
(V)
r
DS
(ON)
(
)
20
20
15
-10
10
25
0
V+ = 15V, V- = -15V
T
A
= +125°C
T
A
= +85°C
T
A
= +25°C
T
A
= -55°C
140
20
0
ON-RESISTANCE vs. V
D
(SINGLE SUPPLY)
40
120
MAX401-3
V
D
(V)
r
DS
(ON)
(
)
20
80
60
5
15
100
10
V+ = 5V
V- = 0V
V+ = 10V
V+ = 15V
V+ = 20V
70
10
0
ON-RESISTANCE vs. V
D
AND
TEMPERATURE (SINGLE SUPPLY)
20
60
MAX401-4
V
D
(V)
r
DS
(ON)
(
)
20
40
30
5
15
50
10
V+ = 12V, V- = 0V
T
A
= +125°C
T
A
= +85°C
T
A
= +25°C
60
-60
-20
20
CHARGE INJECTION vs.
ANALOG VOLTAGE
-40
40
MAX401-7
V
D
(V)
Q (pC)
10
0
-20
-10
0
20
V+ = 15V, V- = -15V
100
0.0001
-55
125
SUPPLY CURRENT vs.
TEMPERATURE
0.001
10
MAX401-8
TEMPERATURE (°C)
I+, I-, I
L
(
µ
A)
0.1
0.01
25
1
I+ at V+ = 16.5V
I- at V- = -16.5V
I
L
at V
L
= 5V
100
0.0001
-55
125
OFF LEAKAGE CURRENTS vs.
TEMPERATURE
0.001
10
MAX401-5
TEMPERATURE (°C)
OFF LEAKAGE (nA)
0.1
0.01
25
1
V+ = 16.5V
V- = -16.5V
V
D
= ±15V
V
S
= ±15V
100
0.0001
-55
125
ON LEAKAGE CURRENTS vs.
TEMPERATURE
0.001
10
MAX401-6
TEMPERATURE (°C)
ON LEAKAGE (nA)
0.1
0.01
25
1
V+ = 16.5V
V- = -16.5V
V
D
= ±15V
V
S
= ±15V
DG401/DG403/DG405
Improved, Dual, High-Speed Analog Switches
_______________________________________________________________________________________
5
__________Applications Information
_____________________Pin Description
Figure 1. Overvoltage Protection Using External Blocking Diodes
Operation with Supply Voltages
Other than ±15V
The DG401/DG403/DG405 switches operate with
±4.5V to ±20V bipolar supplies or with a +10V to +30V
single supply. In either case, analog signals ranging
from V+ to V- can be switched. The Typical Operating
Characteristics graphs illustrate typical analog-signal
and supply-voltage on-resistance variations. The usual
on-resistance temperature coefficient is 0.5%/°C (typ).
Logic Inputs
These devices operate with a single positive supply or
with bipolar supplies. They maintain TTL compatibility
with supplies anywhere in the ±4.5V to ±20V range as
long as V
L
= +5V. If V
L
is connected to V+ or another
supply at voltages other than +5V, the devices will
operate at CMOS-logic-level inputs.
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 V
L
, 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 below V-, without affect-
ing low switch resistance and low leakage
characteristics. Device operation is unchanged, and
the difference between V+ and V- should not exceed
+44V.
DG401
DIP/SO
LCC
NAME
FUNCTION
1, 8
2, 10
D1, D2
Drain (Analog Signal)
2-7
1, 3-9,
11, 16
N.C.
Not internally connected
9, 16
12, 20
S2, S1
Source (Analog Signal)
10, 15
13, 19
IN2, IN1 Digital Logic Inputs
11
14
V+
Positive Supply-Voltage
Input--connected to
substrate
12
15
V
L
Logic Supply-Voltage Input
13
17
GND
Ground
14
18
V-
Negative Supply-Voltage
Input
DG403
DIP/SO
LCC
NAME
FUNCTION
1, 8, 3, 6
2, 10, 4, 8
D1-D4
Drain (Analog Signal)
2, 7
1, 3, 6, 9,
11, 16
N.C.
Not internally connected
11
14
V+
Positive Supply-Voltage
Input--connected to
substrate
12
15
V
L
Logic Supply-Voltage Input
13
17
GND
Ground
14
18
V-
Negative Supply-Voltage
Input
DG405
DIP/SO
LCC
NAME
FUNCTION
1, 8, 3, 6
2, 10, 4, 8
D1-D4
Drain (Analog Signal)
2, 7
1, 3, 6, 9,
11, 16
N.C.
Not internally connected
11
14
V+
Positive Supply-Voltage
Input--connected to
substrate
12
15
V
L
Logic Supply-Voltage Input
13
17
GND
Ground
14
18
V-
Negative Supply Voltage
V+
D
V-
S
V
g
16, 9, 4, 5
20, 12,
5, 7,
S1-S4
Source (Analog Signal)
10, 15
13, 19
IN2, IN1 Digital Logic Inputs
16, 9, 4, 5
20, 12,
5, 7,
S1-S4
Source (Analog Signal)
10, 15
13, 19
IN2, IN1 Digital Logic Inputs
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