MAXIM DG412FDY

19-2418; Rev 0; 4/02
Quad, Rail-to-Rail, Fault-Protected,
SPST Analog Switches
Features
♦ No Power-Supply Sequencing Required
♦ Rail-to-Rail Signal Handling
♦ All Switches Off with Power Off
♦ All Switches Off when V+ is Off and V- is On
♦ ±40V Fault Protection with Power Off
♦ ±36V Fault Protection with ±15V Supplies
♦ Control Line Fault Protection from
V- - 0.3V to V- + 40V
♦ Pin Compatible with Industry-Standard
DG411/DG412/DG413
♦ 20ns (typ) Fault Response Time
♦ 35Ω (max) RON with ±15V Supplies
♦ ±4.5V to ±20V Dual Supplies
♦ +9V to +36V Single Supply
♦ TTL- and CMOS-Compatible Logic Inputs with
±15V or Single +9V to +15V Supplies
Ordering Information
Applications
Communication Systems
Signal Routing
Test Equipment
Data Acquisition
Industrial and Process Control Systems
TEMP RANGE
PIN-PACKAGE
DG411FEUE
PART
-40°C to +85°C
16 TSSOP
DG411FDY
-40°C to +85°C
16 SO
DG411FDJ
-40°C to +85°C
16 Plastic DIP
Ordering Information continued at end of data sheet.
Avionics
Pin Configurations
Redundant/Backup Systems
TOP VIEW
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
Functional Diagram appears at end of data sheet.
Pin Configurations continued at end of data sheet.
IN1
1
16 IN2
COM1
2
15 COM2
NC1
3
14 NC2
V-
4
GND
5
NC4
6
11 NC3
COM4
7
10 COM3
IN4
8
13 V+
DG411F
12 N.C.
9
IN3
DIP/TSSOP/SO
DG411F
LOGIC
SWITCH
0
1
ON
OFF
N.C. = NOT CONNECTED. SWITCHES SHOWN FOR LOGIC 0 INPUT.
ALL SWITCHES ARE OFF WITH POWER REMOVED.
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
DG411F/DG412F/DG413F
General Description
The DG411F/DG412F/DG413F are quad, single-pole/single-throw (SPST), fault-protected analog switches. They
are pin compatible with the industry-standard nonprotected DG411/DG412/DG413. These new switches feature fault-protected inputs and Rail-to-Rail  signalhandling capability. All terminals are protected from
overvoltage faults up to ±36V with power on and up to
±40V with power off. During a fault condition, the COM,
NO, or NC terminal becomes an open circuit and only
microamperes of leakage current flow from the source.
On-resistance is 35Ω (max) and is matched between
switches to 1.5Ω (max) at +25°C.
The DG411F has four normally closed (NC) switches.
The DG412F has four normally open (NO) switches.
The DG413F has two NC and two NO switches. These
CMOS switches operate with dual power supplies ranging from ±4.5V to ±20V or a single supply between +9V
and +36V. All digital inputs have +0.8V and +2.4V logic
thresholds, ensuring both TTL and CMOS logic compatibility when using ±15V or a single +12V supply.
For supply voltages of ±5V, +5V, and +3V, refer to the
MAX4711/MAX4712/MAX4713 data sheet.
DG411F/DG412F/DG413F
Quad, Rail-to-Rail, Fault-Protected,
SPST Analog Switches
ABSOLUTE MAXIMUM RATINGS
(Voltages Referenced to GND)
V+ ...........................................................................-0.3V to +44V
V- ............................................................................-44V to +0.3V
V+ to V-...................................................................-0.3V to +44V
IN_ ......................................................... (V- - 0.3V) to (V- + 40V)
NO_, NC_ to COM_ (Note1) ................................... -40V to +40V
COM_, NO_, NC_ Voltage with
Power On (Note 1).............................................. -36V to +36V
COM_, NO_, NC_ Voltage with
Power Off (Note 1).............................................. -40V to +40V
Continuous Current (any terminal) .................................. ±30mA
Peak Current COM_, NO_, NC_
(pulsed at 1ms, 10% duty cycle) ...............................±100mA
Continuous Power Dissipation (TA = +70°C)
16-Pin TSSOP (derate 9.4mW/°C above +70°C) ....... 755mW
16-Pin SO (derate 8.7mW/°C above +70°C)................696mW
16-Pin Plastic DIP (derate 10.53mW/°C
above +70°C) ........................................................ 842mW
Operating Temperature Range .......................... -40°C to +85°C
Junction Temperature .................................................... +150°C
Storage Temperature Range ........................... -65°C to +160°C
Lead Temperature (soldering, 10s) ............................... +300°C
Note 1: COM_, NO_, and NC_ pins are fault protected. Signals on COM_, NO_, and NC_ exceeding -36V to +36V may damage the
device during power-on conditions. When the power is off, the maximum range is -40V to +40V.
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—±15V Dual Supplies
(V+ = +15V, V- = -15V, VIH = +2.4V, VIL = +0.8V, GND = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at
TA = +25°C.) (Notes 2, 3)
PARAMETER
SYMBOL
CONDITIONS
TA
MIN
TYP
MAX
UNITS
V+
V
ANALOG SWITCH
Fault-Free Analog Signal Range
VCOM_,
VNO_, VNC_
E
V-
+25°C
25
RON
ICOM_ = 10mA,
VNO_, VNC_ = ±10V
E
∆RON
ICOM_ = 10mA,
VNO_, VNC_ = ±10V
E
On-Resistance Flatness
RFLAT(ON)
ICOM_ = 10mA,
VNO_, VNC_ = ±5V, 0
E
NO_, NC_ Off-Leakage Current
(Note 5)
INO_(OFF),
INC_(OFF)
VCOM_ = ±10V,
VNO_, VNC_ = › 10V
E
COM_ Off-Leakage Current
(Note 5)
ICOM_(OFF)
VCOM_ = ±10V,
VNO_, VNC_ = › 10V
E
-20
COM_ On-Leakage Current
(Note 5)
ICOM_(ON)
VCOM_ = ±10V,
VNO_, VNC_ = ±10V or floating
+25°C
-0.5
E
-40
On-Resistance
On-Resistance Match Between
Channels (Note 4)
45
+25°C
0.2
+25°C
1.5
2.0
+25°C
+25°C
35
1.0
3
4
-0.25
+0.025
-20
-0.25
+0.25
+20
+0.025
+0.25
+20
+0.025
+0.5
+40
Ω
Ω
Ω
nA
nA
nA
FAULT
Fault-Protected Analog Signal
Range
NO_ or NC_ Off-Leakage
Current
COM_ Off-Leakage Current
2
VCOM_,
VNO_, VNC_
INO_, INC_
ICOM_
V+ = +15V, V- = -15V
E
-36
+36
V+ = 0, V- = -15V
E
-36
+36
V+ = V- = 0
E
-40
+40
+25°C
-1
+1
E
-10
+10
VNO_, VNC_ = ±36V
VCOM_ = ±36V
+25°C
-1
+1
E
-10
+10
_______________________________________________________________________________________
V
µA
µA
Quad, Rail-to-Rail, Fault-Protected,
SPST Analog Switches
(V+ = +15V, V- = -15V, VIH = +2.4V, VIL = +0.8V, GND = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at
TA = +25°C.) (Notes 2, 3)
PARAMETER
NO_ or NC_ Leakage Current
COM_ Leakage Current
NO_ or NC_ Off-Leakage
Current
COM_ Off-Leakage Current
SYMBOL
INO_, INC_
ICOM_
INO_, INC_
ICOM_
CONDITIONS
VNO_, VNC_ = ±40V, V+ = V- = 0
VCOM_ = ±40V, V+ = V- = 0
V+ = 0, V- = -15V,
VNO_, VNC_ = ±36V
V+ = 0, V- = -15V,
VCOM_ = ±36V
TA
MIN
TYP
MAX
+25°C
-1
+1
E
-10
+10
+25°C
-1
+1
E
-10
+10
+25°C
-1
+1
E
-10
+10
+25°C
-1
+1
E
-10
+10
E
V- - 0.4
V+ + 0.4
UNITS
µA
µA
µA
µA
Fault-Trip Threshold
± Fault Output Turn-Off Delay
VNO_, VNC_ = ±36V, RL = 1kΩ
E
20
ns
V
± Fault Recovery Time
VNO_, VNC_ = ±36V, RL = 1kΩ
E
1
µs
SWITCH DYNAMICS
Turn-On Time
tON
VNO_ or VNC_ = ±10V, RL = 300Ω, +25°C
CL = 35pF, Figure 2
E
70
Turn-Off Time
tOFF
VNO_ or VNC_ = ±10V, RL = 300Ω, +25°C
CL = 35pF, Figure 2
E
55
Break-Before-Make Time Delay
(DG413F only) (Note 6)
tBBM
VNO_ or VNC_ = ±10V, RL = 100Ω, +25°C
CL = 10pF, Figure 3
E
Charge Injection
Q
NO_ or NC_ Off-Capacitance
CN_(OFF)
175
220
145
160
2
15
ns
ns
ns
1
VGEN = 0, RGEN = 0, CL = 1nF,
Figure 4
+25°C
5
pC
f = 1MHz, Figure 5
+25°C
15
pF
COM_ Off-Capacitance
CCOM_(OFF) f = 1MHz, Figure 5
+25°C
15
pF
COM_ On-Capacitance
CCOM_(ON)
f = 1MHz, Figure 5
+25°C
47
pF
Off-Isolation (Note 7)
VISO
f = 1MHz, RL = 50Ω, CL = 15pF,
PIN = 0dBm, Figure 6
+25°C
-65
dB
Channel-to-Channel Crosstalk
(Note 8)
VCT
f = 1MHz, RL = 50Ω, CL = 15pF,
PIN = 0dBm, Figure 6
+25°C
-105
dB
LOGIC INPUT
Input Logic High
VIH
Input Logic Low
VIL
Input Leakage Current
IIN
E
2.4
V
E
VIN_ = 0 or V+
E
-1
E
±4.5
0.8
V
+1
µA
±20
V
POWER SUPPLY
Power-Supply Range
V+, VAll VIN_ = +5V, VCOM_ = 0
V+ Supply Current
I+
All VIN_ = 0 or V+, VCOM_ = 0
+25°C
355
E
+25°C
E
600
800
155
300
µA
400
_______________________________________________________________________________________
3
DG411F/DG412F/DG413F
ELECTRICAL CHARACTERISTICS—±15V Dual Supplies (continued)
DG411F/DG412F/DG413F
Quad, Rail-to-Rail, Fault-Protected,
SPST Analog Switches
ELECTRICAL CHARACTERISTICS—±15V Dual Supplies (continued)
(V+ = +15V, V- = -15V, VIH = +2.4V, VIL = +0.8V, GND = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at
TA = +25°C.) (Notes 2, 3)
PARAMETER
SYMBOL
CONDITIONS
All VIN_ = +5V, VCOM_ = 0
V- Supply Current
IAll VIN_ = 0 or V+, VCOM_ = 0
All VIN_ = +5V, VCOM_ = 0
GND Supply Current
IGND
All VIN_ = 0 or V+, VCOM_ = 0
TA
MIN
+25°C
TYP
MAX
155
250
155
250
E
325
+25°C
E
UNITS
µA
325
+25°C
200
E
350
475
+25°C
0.1
E
1
µA
10
ELECTRICAL CHARACTERISTICS—Single +12V Supply
(V+ = +12V, V- = 0, VIH = +2.4V, VIL = +0.8V, GND = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at
TA = +25°C.) (Notes 2, 3)
PARAMETER
SYMBOL
CONDITIONS
TA
MIN
TYP
MAX
UNITS
V+
V
ANALOG SWITCH
Fault-Free Analog Signal Range
VCOM_,
VNO_, VNC_
E
0
+25°C
56
85
1.0
120
4
RON
ICOM_ = 1mA,
VNO_, VNC_ = +10V
On-Resistance Match Between
Channels (Note 4)
∆RON
ICOM_ = 1mA,
VNO_, VNC_ = +10V
NO_, NC_ Off-Leakage Current
(Note 5)
INO_(OFF),
INC_(OFF)
VCOM_ = +1V, +10V,
VNO_, VNC_ = +10V, +1V
+25°C
-0.25
+0.25
E
-20
+20
COM_ Off-Leakage Current
(Note 5)
ICOM_(OFF)
VCOM_ = +1V, +10V,
VNO_, VNC_ = +10V, +1V
+25°C
-0.5
+0.25
E
-20
+20
COM_ On-Leakage Current
(Note 5)
VCOM_ = +1V, +10V,
VNO_, VNC_ = +1V, +10V,
or floating
+25°C
-0.5
+0.5
ICOM_(ON)
E
-40
+40
On-Resistance
E
+25°C
E
5
Ω
Ω
nA
nA
nA
FAULT
Fault-Protected Analog
Signal Range
NO_ or NC_ Off-Leakage
Current (Note 5)
COM_ Off-Leakage Current
(Note 5)
NO_ or NC_ Leakage Current
(Note 5)
4
VCOM_,
VNO_, VNC_
Power on
E
-36
+36
Power off
E
-40
+40
+25°C
-1
+1
E
-10
+10
INO_, INC_
VNO_, VNC_ = ±36V
ICOM_
VNO_, VNC_ = ±36V
INO_, INC_
Supplies off, VNO_, VNC_ = ±40V
+25°C
-1
+1
E
-10
+10
+25°C
-1
+1
E
-10
+10
_______________________________________________________________________________________
V
µA
µA
µA
Quad, Rail-to-Rail, Fault-Protected,
SPST Analog Switches
(V+ = +12V, V- = 0, VIH = +2.4V, VIL = +0.8V, GND = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at
TA = +25°C.) (Notes 2, 3)
PARAMETER
COM_ Leakage Current
(Note 5)
SYMBOL
ICOM_
CONDITIONS
Supplies off, VNO_, VNC_ = ±40V
TA
MIN
TYP
MAX
+25°C
-1
+1
E
-10
+10
UNITS
µA
+Fault Output Turn-Off Delay
VNO_, VNC_ = +36V, RL = 1kΩ
E
20
ns
+Fault Recovery Time
VNO_, VNC_ = +36V, RL = 1kΩ
E
1
µs
SWITCH DYNAMICS
Turn-On Time
tON
VNO_ or VNC_ = +10V, RL = 300Ω, +25°C
CL = 35pF, Figure 2
E
120
Turn-Off Time
tOFF
VNO_ or VNC_ = +10V, RL = 300Ω, +25°C
CL = 35pF, Figure 2
E
70
Break-Before-Make Time Delay
(DG413F Only) (Note 6)
tBBM
VNO_ or VNC_ = +10V, RL = 100Ω, +25°C
CL = 10pF, Figure 3
E
Charge Injection
Q
VGEN = 0, RGEN = 0, CL = 1nF,
Figure 4
250
315
125
140
2
50
ns
ns
1
+25°C
ns
5
pC
LOGIC INPUT
Input Logic High
VIH
E
Input Logic Low
VIL
E
Input Leakage Current
(Note 5)
IIN
VIN_ = 0 or V+
2.4
E
-1
E
+9
V
0.8
V
+1
µA
+36
V
POWER SUPPLY
Power-Supply Range
V+
All VIN_ = +5V, VCOM_ = +6V
V+ Supply Current
I+
All VIN_ = 0 or V+, VCOM_ = +6V
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
Note 7:
Note 8:
+25°C
180
E
+25°C
E
350
450
85
150
µA
250
The algebraic convention is used in this data sheet; the most negative value is shown in the minimum column.
Electrical specifications at -40°C are not production tested and guaranteed by design.
∆RON = ∆RON(MAX) - ∆RON(MIN).
Leakage parameters are 100% tested at maximum rated temperature and with dual supplies and guaranteed by design at +25°C.
Guaranteed by design.
Off-Isolation = 20 log10 [VCOM/(VNC or VNO)], VCOM = output, VNC or VNO = input to off switch.
Between any two switches.
_______________________________________________________________________________________
5
DG411F/DG412F/DG413F
ELECTRICAL CHARACTERISTICS—Single +12V Supply (continued)
Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
ON-RESISTANCE vs. VCOM AND TEMPERATURE
(DUAL SUPPLIES)
V+ = +5V
V- = -5V
V+ = +15V
V- = -15V
80
100
DG411 toc02
50
DG411 toc01
100
ON-RESISTANCE vs. VCOM
(SINGLE SUPPLY)
40
V+ = +9V
V- = 0
80
V+ = +12V
V- = 0
V+ = +15V
V+ = +24V
V- = 0
V- = 0
TA = -40°C
V+ = +28V
V- = 0
0
-10
-5
0
5
10
15
20
-15
-10
-5
0
5
10
VCOM (V)
VCOM (V)
ON-RESISTANCE vs. VCOM AND TEMPERATURE
(SINGLE SUPPLY)
ON/OFF-LEAKAGE CURRENT
vs. TEMPERATURE
V+ = +12V
V- = 0
LEAKAGE CURRENT (pA)
TA = +85°C
60
TA = +25°C
TA = -40°C
40
ICOM(ON)
1000
20
0
2
4
6
8
10
24
30
36
30
20
INO(OFF),
INC(OFF)
10
ICOM(OFF)
1
12
18
CHARGE INJECTION vs. VCOM
100
DUAL SUPPLIES: ±15V
10
0
-40
-15
10
SINGLE
SUPPLY: +12V
-10
DUAL SUPPLIES:
V+ = +15V, V- = -15V
0.01
0
12
40
0.1
0
6
VCOM (V)
10,000
80
15
DG411 toc05
DG411 toc04
100
V+ = +36V
V- = 0
0
DG411 toc06
-15
20
Q (pC)
-20
60
40
10
V+ = +20V
V- = -20V
0
-20
35
85
60
-15
-10
-5
0
5
10
15
VCOM (V)
TEMPERATURE (°C)
VCOM (V)
SUPPLY CURRENT vs. TEMPERATURE
LOGIC-LEVEL THRESHOLD VOLTAGE
vs. SUPPLY VOLTAGE
TURN-ON/TURN-OFF TIMES
vs. SUPPLY VOLTAGE (DUAL SUPPLIES)
IGND
300
I+
200
100
2.0
-15
10
TEMPERATURE (°C)
60
85
DG411 toc09
tON
150
100
tOFF
50
DUAL OR SINGLE
SUPPLIES
35
200
1.5
1.0
-40
250
2.5
I-
0
300
tON/tOFF (ns)
400
3.0
THRESHOLD VOLTAGE (V)
DUAL SUPPLIES:
V+ = +15V, V- = -15V, VIN_ = +5V
DG411 toc07
500
DG411 toc08
RON (Ω)
TA = +25°C
20
20
6
30
RON (Ω)
V+ = +10V
V- = -10V
V+ = +15V
V- = -15V
40
RON (Ω)
RON (Ω)
TA = +85°C
60
DG411 toc03
ON-RESISTANCE vs. VCOM
(DUAL SUPPLIES)
SUPPLY CURRENT (µA)
DG411F/DG412F/DG413F
Quad, Rail-to-Rail, Fault-Protected,
SPST Analog Switches
0
5
10
15
20
25
30
SUPPLY VOLTAGE (V)
35
40
5
10
15
SUPPLY VOLTAGE (V+, V-)
_______________________________________________________________________________________
20
Quad, Rail-to-Rail, Fault-Protected,
SPST Analog Switches
(TA = +25°C, unless otherwise noted.)
200
DG411 toc11
120
DG411 toc10
200
TURN-ON/TURN-OFF TIMES
vs. TEMPERATURE (SINGLE SUPPLY)
TURN-ON/TURN-OFF TIMES
vs. TEMPERATURE (DUAL SUPPLIES)
DUAL SUPPLIES: ±15V
100
V+ = +12V, V- = 0
150
150
tON
80
tON/tOFF (ns)
100
tON/tOFF (ns)
tON/tOFF (ns)
DG411 toc12
TURN-ON/TURN-OFF TIMES
vs. SUPPLY VOLTAGE (SINGLE SUPPLY)
tON
60
tOFF
tON
100
40
50
tOFF
50
tOFF
20
V- = GND
0
0
18
9
36
0
-40
-15
10
35
85
60
-40
35
85
60
TEMPERATURE (°C)
FREQUENCY RESPONSE
TOTAL HARMONIC DISTORTION
vs. FREQUENCY
FAULT CURRENT vs. FAULT VOLTAGE
(DUAL SUPPLIES)
±15V DUAL SUPPLIES
IN = OUT = 600Ω, VP-P = 5V
200
DUAL SUPPLIES:
V+ = +15V, V- = -15V
150
ON-RESPONSE
DG411 toc15
1
DG411 toc14
0
100
-20
THD (%)
ICOM (µA)
0.1
-40
OFF-ISOLATION
-60
50
0
-50
0.01
-80
-100
-100
0.001
0.1
1
10
-200
10
100
100
1k
10k
100k
FREQUENCY (Hz)
FREQUENCY (MHz)
-60
-40
-20
0
20
40
60
VCOM (V)
FAULT CURRENT vs. FAULT VOLTAGE
(SINGLE SUPPLY)
200
DG411 toc16
0.01
FOR |VCOM| < VSUPPLY,
ICOM = VCOM/RL
-150
CROSSTALK
150
100
ICOM (µA)
LOSS (dB)
10
TEMPERATURE (°C)
V+ = +15V, V- = -15V
-120
0.001
-15
SUPPLY VOLTAGE (V+)
DG411 toc13
20
27
50
0
-50
-100
FOR 0V < VCOM < VSUPPLY,
ICOM = VCOM/RL
-150
-200
-60
-40
-20
0
20
40
60
VCOM (V)
_______________________________________________________________________________________
7
DG411F/DG412F/DG413F
Typical Operating Characteristics (continued)
DG411F/DG412F/DG413F
Quad, Rail-to-Rail, Fault-Protected,
SPST Analog Switches
Typical Operating Characteristics (continued)
(TA = +25°C, unless otherwise noted.)
FAULT STEP RESPONSE
(POSITIVE INPUT)
INPUT OVERVOLTAGE vs. OUTPUT
DG411 toc18
DG411 toc17
+25V
+25V
VNO_, VNC_
INPUT
GND
+15V
-22V
VCOM_
OUTPUT
VNO_, VNC_
INPUT
+5V
GND
VCOM_
OUTPUT
GND
GND
-15V
2ms/div
20ms/div
FAULT RECOVERY TIME
(POSITIVE INPUT)
FAULT STEP RESPONSE
(NEGATIVE INPUT)
DG411 toc20
DG411 toc19
GND
-5V
VNO_, VNC_
INPUT
+25V
VNO_, VNC_
INPUT
-25V
+5V
GND
GND
VCOM_
OUTPUT
-5V
+5V
VCOM_
OUTPUT
GND
1µs/div
2ms/div
FAULT RESPONSE
(V+ = 0, V- = -15V)
FAULT RECOVERY TIME
(NEGATIVE INPUT)
DG411 toc22
DG411 toc21
+25V
GND
-5V
VNO_, VNC_
INPUT
VNO_, VNC_
INPUT
GND
-25V
GND
VCOM_
OUTPUT
-5V
-25V
VCOM_
OUTPUT
GND
1µs/div
8
2ms/div
_______________________________________________________________________________________
Quad, Rail-to-Rail, Fault-Protected,
SPST Analog Switches
PIN
NAME
FUNCTION
DG411F
DG412F
DG413F
1, 16, 9, 8
1, 16, 9, 8
1, 16, 9, 8
IN1, IN2, IN3, IN4
2, 15, 10, 7
2, 15, 10, 7
2, 15, 10, 7
COM1, COM2, COM3,
COM4
Analog Switch Common Terminals
3, 14, 11, 6
—
—
NC1, NC2, NC3, NC4
Analog Switch Normally Closed Terminals
—
3, 14, 11, 6
—
NO1, NO2, NO3, NO4
Analog Switch Normally Open Terminals
—
—
3, 6
NO1, NO4
Analog Switch Normally Open Terminals
—
—
14, 11
NC2, NC3
Analog Switch Normally Closed Terminals
4
4
4
V-
5
5
5
GND
Ground. Connect to digital ground.
12
12
12
N.C.
No Connection. Not internally connected.
13
13
13
V+
Detailed Description
The DG411F/DG412F/DG413F are fault-protected
CMOS analog switches with unique operation and
construction. These switches differ considerably from
traditional fault-protection switches, with several advantages. First, they are constructed with two parallel
FETs, allowing very low on-resistance when the switch
is on. Second, they allow signals on the NO_ or NC_
pins that are within, or slightly beyond, the supply rails
to be passed through the switch to the COM_ terminal
(or vice versa), allowing true rail-to-rail signal operation.
Third, the DG411F/DG412F/DG413F have the same
fault-protection performance on any of the NO_, NC_,
or COM_ switch inputs. Operation is identical for both
fault polarities. The fault protection extends to ±36V
from GND with ±15V supplies.
During a fault condition, the particular overvoltage input
(COM_, NO_, NC_) pin becomes high impedance
regardless of the switch state or load resistance. When
power is removed, the fault protection is still in effect. In
this case, the COM_, NO_, or NC_ terminals are a virtual open circuit. The fault can be up to ±40V with power
off. The switches turn off when V+ is not powered,
regardless of V-.
Pin Compatibility
These switches have identical pinouts to common nonfault-protected CMOS switches. They allow for carefree
Logic Control Digital Inputs
Negative-Supply Voltage Input. Connect to GND for singlesupply operation. Bypass with a 0.1µF capacitor to GND.
Positive-Supply Voltage Input. Bypass with a 0.1µF capacitor
to GND.
direct replacement in existing printed circuit boards
since the NO_, NC_, and COM_ pins of each switch are
fault protected.
Internal Construction
Internal construction is shown in Figure 1, with the analog signal paths shown in bold. A single NO switch is
shown. The NC configuration is identical except the
logic-level translator becomes an inverter. The analog
switch is formed by the parallel combination of N-channel FET (N1) and P-channel FET (P1), which are driven
on and off simultaneously according to the input fault
condition and the logic-level state.
Normal Operation
Two comparators continuously compare the voltage on
the COM_, NO_, and NC_ pins with V+ and V-. When
the signal on COM_, NO_, or NC_ is between V+ and
V-, the switch acts normally, with FETs N1 and P1 turning on and off in response to IN_ signals. The parallel
combination of N1 and P1 forms a low-value resistor
between NO_ (or NC_) and COM_ so that signals pass
equally well in either direction.
Positive Fault Condition
When the signal on NO_ (or NC_) and COM_ exceeds
V+ by about 50mV, the high-fault comparator output is
high, turning off FETs N1 and P1. This makes the NO_
(or NC_) and COM_ pins high impedance regardless of
_______________________________________________________________________________________
9
DG411F/DG412F/DG413F
Pin Description
DG411F/DG412F/DG413F
Quad, Rail-to-Rail, Fault-Protected,
SPST Analog Switches
the switch state. If the switch state is off, all FETs are
turned off and both NO_ (or NC_) and COM_ are high
impedance.
Negative Fault Condition
When the signal on NO_ (or NC_) and COM_ exceeds
V- by about 50mV, the low-fault comparator output is
high, turning off FETs N1 and P1. This makes the NO_
(or NC_) and COM_ pins high impedance regardless of
the switch state. If the switch state is off, all FETs are
turned off and both NO_ (or NC_) and COM_ are high
impedance.
Transient Fault Response and Recovery
When a fast rise-time and fall-time transient on NO_,
NC_, or COM_ exceeds V+ or V-, the output follows the
input to the supply rail with only a few nanoseconds
delay. This delay is due to the switch on-resistance and
circuit capacitance to ground. When the input transient
returns to within the supply rails, however, there is a
longer output recovery time delay. For positive faults,
the recovery time is typically 1µs. For negative faults,
the recovery time is typically 0.5µs. These values
depend on the output resistance and capacitance, and
are not production tested or guaranteed. The delays
are not dependent on the fault amplitude. Higher load
resistance and capacitance increase recovery times.
Fault-Protection Voltage and Power Off
The maximum fault voltage on the NO_ (or NC_) and
COM_ pins is ±36V with power applied and ±40V with
power off.
V+ and GND power the internal logic and logic-level
translators and set the input logic thresholds. The logiclevel translators convert the logic levels to switched V+
and V- signals to drive the gates of the analog switches. This drive signal is the only connection between the
power supplies and the analog signals.
IN_ Logic-Level Thresholds
The logic-level thresholds are CMOS and TTL compatible when V+ is +15V. As V+ is raised, the threshold
increases slightly, and when V+ reaches 25V, the level
threshold is about 2.3V, above the TTL output high-level
minimum of 2.4V, but still compatible with CMOS outputs (see the Typical Operating Characteristics). V- has
no effect on the logic-level thresholds.
Bipolar Supplies
The DG411F/DG412F/DG413F operate with bipolar
supplies between ±4.5V and ±20V. The V+ and V- supplies need not be symmetrical, but their difference cannot exceed the absolute maximum rating of 44V.
Single Supply
The DG411F/DG412F/DG413F operate from a single
supply between +9V and +36V when V- is connected to
GND.
Ordering Information (continued)
TEMP RANGE
PIN-PACKAGE
DG412FEUE
-40°C to +85°C
16 TSSOP
Failure Modes
DG412FDY
-40°C to +85°C
16 SO
Exceeding the fault-protection voltage limits on NO_,
NC_, or COM_, even for very short periods, can cause
the device to fail. See the Absolute Maximum Ratings.
The failure modes may not be obvious, and failure in
one switch may or may not affect other switches in the
same package.
DG412FDJ
-40°C to +85°C
16 Plastic DIP
DG413FEUE
-40°C to +85°C
16 TSSOP
DG413FDY
-40°C to +85°C
16 SO
DG413FDJ
-40°C to +85°C
16 Plastic DIP
Ground
There is no galvanic connection between the analog
signal paths and GND. The analog signal paths consist
of an N-channel and P-channel MOSFET with their
sources and drains paralleled and their gates driven
out of phase to V+ and V- by the logic-level translators.
However, the potential of the analog signals must be
defined or at least limited with respect to GND.
10
PART
Chip Information
TRANSISTOR COUNT: 251
PROCESS: CMOS
SUBSTRATE CONNECTED TO: V+
______________________________________________________________________________________
Quad, Rail-to-Rail, Fault-Protected,
SPST Analog Switches
NORMALLY OPEN SWITCH CONSTRUCTION
V+
HIGH
FAULT
P1
NO_
COM_
N1
LOW
FAULT
ON
IN_
DG411F
DG412F
DG413F
GND
VESD DIODE
Figure 1. Functional Diagram
V+
V+
3V
NO_ OR NC_
VIN_
10V
50%
0V
VIN_
DG411F
DG412F
DG413F COM_
GND
V-
10V
VOUT
90%
90%
VOUT
RL
CL
V-
0V
tOFF
tON
V- IS CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION.
Figure 2. Switch Turn-On/Turn-Off Times
______________________________________________________________________________________
11
DG411F/DG412F/DG413F
Test Circuits/Timing Diagrams
DG411F/DG412F/DG413F
Quad, Rail-to-Rail, Fault-Protected,
SPST Analog Switches
Test Circuits/Timing Diagrams (continued)
V+
VIN_
IN_
IN_
V+
10V
VIN_
DG413F COM_
VOUT
COM_
GND
tF < 5ns
tR < 5ns
3V
NO_
NC_
V-
VNO_, VNC_
CL
RL
50%
0V
90%
VOUT
V-
0V
tBBM
V- IS CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION.
Figure 3. DG413F Break-Before-Make Interval
V+
VIN_
RGEN
IN_ V+
NO_ OR NC_
3V
VGEN
DG411F
DG412F
DG413F COM_
GND
VIN_
0V
VOUT
VOUT
∆VOUT
VCL
V-
V- IS CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION.
∆VOUT IS THE MEASURED VOLTAGE DUE TO CHARGETRANSFER ERROR Q WHEN THE CHANNEL TURNS OFF
Q = ∆VOUT x CL
Figure 4. Charge Injection
V+
V+
NO_
V+
IN_
DG411F NC_
DG412F
DG413F
GND
COM_
V-
1MHz
CAPACITANCE
ANALYZER
VV- IS CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION.
Figure 5. COM_, NO_, NC_ Capacitance
12
______________________________________________________________________________________
Quad, Rail-to-Rail, Fault-Protected,
SPST Analog Switches
50Ω RESISTOR
ONLY NEEDED
FOR CROSSTALK
AND ISOLATION
V+
10nF
NETWORK
ANALYZER
VIN
V+
50Ω
50Ω
COM_
3.0V
IN_
DG411F
DG412F
DG413F
50Ω
VOUT
MEAS
NO_, NC_
GND
V-
REF
50Ω
50Ω
10nF
VMEASUREMENTS ARE STANDARDIZED AGAINST SHORT AND OPEN AT SOCKET TERMINALS.
OFF-ISOLATION IS MEASURED BETWEEN COM_ AND "OFF" NO_ OR NC_ TERMINALS.
ON-RESPONSE IS MEASURED BETWEEN COM_ AND "ON" NO_ OR NC_ TERMINALS.
CROSSTALK IS MEASURED BETWEEN COM_ TERMINALS WITH ALL SWITCHES ON.
V- IS CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION.
Figure 6. Frequency Response, Off-Isolation, and Crosstalk
Pin Configurations (continued)
TOP VIEW
IN1
1
16 IN2
COM1
2
15 COM2
NO1
3
14 NO2
V-
4
13 V+
DG412F
IN1
1
16 IN2
COM1
2
15 COM2
NO1
3
14 NC2
V-
4
13 V+
DG413F
12 N.C.
12 N.C.
GND
5
6
11 NO3
NO4
6
11 NC3
COM4
7
10 COM3
COM4
7
10 COM3
IN4
8
9
IN4
8
GND
5
NO4
IN3
DIP/TSSOP/SO
DG412F
LOGIC
SWITCH
0
1
OFF
ON
9
IN3
DIP/TSSOP/SO
LOGIC
0
1
DG413F
SWITCHES SWITCHES
2, 3
1, 4
OFF
ON
ON
OFF
N.C. = NOT CONNECTED. SWITCHES SHOWN FOR LOGIC “0” INPUT.
ALL SWITCHES ARE OFF WITH POWER REMOVED
______________________________________________________________________________________
13
DG411F/DG412F/DG413F
Test Circuits/Timing Diagrams (continued)
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
PDIPN.EPS
DG411F/DG412F/DG413F
Quad, Rail-to-Rail, Fault-Protected,
SPST Analog Switches
14
______________________________________________________________________________________
Quad, Rail-to-Rail, Fault-Protected,
SPST Analog Switches
TSSOP,NO PADS.EPS
______________________________________________________________________________________
15
DG411F/DG412F/DG413F
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
16L SOIC.EPS
DG411F/DG412F/DG413F
Quad, Rail-to-Rail, Fault-Protected,
SPST Analog Switches
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.
16 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2002 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.