View DG412F_243946.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

19-2418; Rev 0; 4/02
Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches
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 35 (max) and is matched between switches to 1.5 (max) at +25C. 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. o Rail-to-Rail Signal Handling o All Switches Off with Power Off o All Switches Off when V+ is Off and V- is On o 40V Fault Protection with Power Off o 36V Fault Protection with 15V Supplies o Control Line Fault Protection from V- - 0.3V to V- + 40V o Pin Compatible with Industry-Standard DG411/DG412/DG413 o 20ns (typ) Fault Response Time o 35 (max) RON with 15V Supplies o 4.5V to 20V Dual Supplies o +9V to +36V Single Supply o TTL- and CMOS-Compatible Logic Inputs with 15V or Single +9V to +15V Supplies
Features
o No Power-Supply Sequencing Required
DG411F/DG412F/DG413F
Applications
Communication Systems Signal Routing Test Equipment Data Acquisition Industrial and Process Control Systems Avionics Redundant/Backup Systems
TOP VIEW
IN1 COM1 NC1 VGND NC4 COM4 IN4 1 2 3 4 5 6 7 8
Ordering Information
PART DG411FEUE DG411FDY DG411FDJ TEMP RANGE -40C to +85C -40C to +85C -40C to +85C PIN-PACKAGE 16 TSSOP 16 SO 16 Plastic DIP
Ordering Information continued at end of data sheet.
Pin Configurations
16 IN2 15 COM2 14 NC2 13 V+
DG411F
12 N.C. 11 NC3 10 COM3 9 IN3
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.
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
1
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.
Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches DG411F/DG412F/DG413F
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 = +70C) 16-Pin TSSOP (derate 9.4mW/C above +70C) ....... 755mW 16-Pin SO (derate 8.7mW/C above +70C)................696mW 16-Pin Plastic DIP (derate 10.53mW/C above +70C) ........................................................ 842mW Operating Temperature Range .......................... -40C to +85C Junction Temperature .................................................... +150C Storage Temperature Range ........................... -65C to +160C Lead Temperature (soldering, 10s) ............................... +300C
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 = +25C.) (Notes 2, 3)
PARAMETER ANALOG SWITCH Fault-Free Analog Signal Range On-Resistance On-Resistance Match Between Channels (Note 4) On-Resistance Flatness NO_, NC_ Off-Leakage Current (Note 5) COM_ Off-Leakage Current (Note 5) COM_ On-Leakage Current (Note 5) FAULT V+ = +15V, V- = -15V Fault-Protected Analog Signal Range NO_ or NC_ Off-Leakage Current COM_ Off-Leakage Current VCOM_, VNO_, VNC_ INO_, INC_ ICOM_ V+ = 0, V- = -15V V+ = V- = 0 VNO_, VNC_ = 36V VCOM_ = 36V E E E +25C E +25C E -36 -36 -40 -1 -10 -1 -10 +36 +36 +40 +1 +10 +1 +10 A A V VCOM_, VNO_, VNC_ RON RON RFLAT(ON) INO_(OFF), INC_(OFF) ICOM_(OFF) ICOM_(ON) ICOM_ = 10mA, VNO_, VNC_ = 10V ICOM_ = 10mA, VNO_, VNC_ = 10V ICOM_ = 10mA, VNO_, VNC_ = 5V, 0 VCOM_ = 10V, VNO_, VNC_ = 10V VCOM_ = 10V, VNO_, VNC_ = 10V VCOM_ = 10V, VNO_, VNC_ = 10V or floating E +25C E +25C E +25C E +25C E +25C E +25C E -0.25 -20 -0.25 -20 -0.5 -40 +0.025 +0.025 +0.025 1.0 0.2 V25 V+ 35 45 1.5 2.0 3 4 +0.25 +20 +0.25 +20 +0.5 +40 V nA nA nA SYMBOL CONDITIONS TA MIN TYP MAX UNITS
2
_______________________________________________________________________________________
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 = +25C.) (Notes 2, 3)
PARAMETER NO_ or NC_ Leakage Current COM_ Leakage Current NO_ or NC_ Off-Leakage Current COM_ Off-Leakage Current Fault-Trip Threshold Fault Output Turn-Off Delay Fault Recovery Time SWITCH DYNAMICS Turn-On Time Turn-Off Time Break-Before-Make Time Delay (DG413F only) (Note 6) Charge Injection NO_ or NC_ Off-Capacitance COM_ Off-Capacitance COM_ On-Capacitance Off-Isolation (Note 7) Channel-to-Channel Crosstalk (Note 8) LOGIC INPUT Input Logic High Input Logic Low Input Leakage Current POWER SUPPLY Power-Supply Range V+, VAll VIN_ = +5V, VCOM_ = 0 V+ Supply Current I+ All VIN_ = 0 or V+, VCOM_ = 0 E +25C E +25C E 155 4.5 355 20 600 800 300 400 A V VIH VIL IIN VIN_ = 0 or V+ E E E -1 2.4 0.8 +1 V V A tON tOFF tBBM Q CN_(OFF) CCOM_(ON) VISO VCT VNO_ or VNC_ = 10V, RL = 300, +25C CL = 35pF, Figure 2 E VNO_ or VNC_ = 10V, RL = 300, +25C CL = 35pF, Figure 2 E VNO_ or VNC_ = 10V, RL = 100, +25C CL = 10pF, Figure 3 E VGEN = 0, RGEN = 0, CL = 1nF, Figure 4 f = 1MHz, Figure 5 f = 1MHz, Figure 5 f = 1MHz, RL = 50, CL = 15pF, PIN = 0dBm, Figure 6 f = 1MHz, RL = 50, CL = 15pF, PIN = 0dBm, Figure 6 +25C +25C +25C +25C +25C +25C 2 1 5 15 15 47 -65 -105 70 55 15 175 220 145 160 ns ns ns pC pF pF pF dB dB 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 VNO_, VNC_ = 36V, RL = 1k VNO_, VNC_ = 36V, RL = 1k E +25C E +25C E +25C E E E E TA +25C MIN -1 -10 -1 -10 -1 -10 -1 -10 V- - 0.4 20 1 TYP MAX +1 +10 +1 +10 +1 +10 +1 +10 V+ + 0.4 UNITS A A A A V ns s
DG411F/DG412F/DG413F
CCOM_(OFF) f = 1MHz, Figure 5
_______________________________________________________________________________________
3
Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches DG411F/DG412F/DG413F
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 = +25C.) (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 E +25C E +25C E +25C E 0.1 200 155 TA +25C MIN TYP 155 MAX 250 325 250 325 350 475 1 10 A A UNITS
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 = +25C.) (Notes 2, 3)
PARAMETER ANALOG SWITCH Fault-Free Analog Signal Range On-Resistance On-Resistance Match Between Channels (Note 4) NO_, NC_ Off-Leakage Current (Note 5) COM_ Off-Leakage Current (Note 5) COM_ On-Leakage Current (Note 5) 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) VCOM_, VNO_, VNC_ INO_, INC_ ICOM_ INO_, INC_ Power on Power off VNO_, VNC_ = 36V VNO_, VNC_ = 36V Supplies off, VNO_, VNC_ = 40V E E +25C E +25C E +25C E -36 -40 -1 -10 -1 -10 -1 -10 +36 +40 +1 +10 +1 +10 +1 +10 A V A A VCOM_, VNO_, VNC_ RON RON INO_(OFF), INC_(OFF) ICOM_(OFF) ICOM_ = 1mA, VNO_, VNC_ = +10V ICOM_ = 1mA, VNO_, VNC_ = +10V VCOM_ = +1V, +10V, VNO_, VNC_ = +10V, +1V VCOM_ = +1V, +10V, VNO_, VNC_ = +10V, +1V VCOM_ = +1V, +10V, VNO_, VNC_ = +1V, +10V, or floating E +25C E +25C E +25C E +25C E +25C E -0.25 -20 -0.5 -20 -0.5 -40 0 56 1.0 V+ 85 120 4 5 +0.25 +20 +0.25 +20 +0.5 nA +40 V nA nA SYMBOL CONDITIONS TA MIN TYP MAX UNITS
ICOM_(ON)
4
_______________________________________________________________________________________
Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches
ELECTRICAL CHARACTERISTICS--Single +12V Supply (continued)
(V+ = +12V, V- = 0, VIH = +2.4V, VIL = +0.8V, GND = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Notes 2, 3)
PARAMETER COM_ Leakage Current (Note 5) +Fault Output Turn-Off Delay +Fault Recovery Time SWITCH DYNAMICS Turn-On Time Turn-Off Time Break-Before-Make Time Delay (DG413F Only) (Note 6) Charge Injection LOGIC INPUT Input Logic High Input Logic Low Input Leakage Current (Note 5) POWER SUPPLY Power-Supply Range V+ All VIN_ = +5V, VCOM_ = +6V V+ Supply Current I+ All VIN_ = 0 or V+, VCOM_ = +6V E +25C E +25C E 85 +9 180 +36 350 450 150 250 A V VIH VIL IIN VIN_ = 0 or V+ E E E -1 2.4 0.8 +1 V V A tON tOFF tBBM Q VNO_ or VNC_ = +10V, RL = 300, +25C CL = 35pF, Figure 2 E VNO_ or VNC_ = +10V, RL = 300, +25C CL = 35pF, Figure 2 E VNO_ or VNC_ = +10V, RL = 100, +25C CL = 10pF, Figure 3 E VGEN = 0, RGEN = 0, CL = 1nF, Figure 4 +25C 2 1 5 120 70 50 250 315 125 140 ns ns ns pC SYMBOL ICOM_ CONDITIONS Supplies off, VNO_, VNC_ = 40V VNO_, VNC_ = +36V, RL = 1k VNO_, VNC_ = +36V, RL = 1k E E E TA +25C MIN -1 -10 20 1 TYP MAX +1 +10 UNITS A ns s
DG411F/DG412F/DG413F
Note 2: Note 3: Note 4: Note 5: Note 6: Note 7: Note 8:
The algebraic convention is used in this data sheet; the most negative value is shown in the minimum column. Electrical specifications at -40C 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 +25C. 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
Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches DG411F/DG412F/DG413F
Typical Operating Characteristics
(TA = +25C, unless otherwise noted.)
ON-RESISTANCE vs. VCOM (DUAL SUPPLIES)
DG411 toc01
ON-RESISTANCE vs. VCOM AND TEMPERATURE (DUAL SUPPLIES)
DG411 toc02
ON-RESISTANCE vs. VCOM (SINGLE SUPPLY)
V+ = +9V V- = 0 V+ = +12V V- = 0 V+ = +15V V+ = +24V V- = 0 V- = 0
DG411 toc03
100 V+ = +5V V- = -5V 80
50 V+ = +15V V- = -15V 40 TA = +85C
100
80
RON ()
RON ()
40
V+ = +15V V- = -15V
V+ = +10V V- = -10V
TA = +25C 20 TA = -40C
RON ()
60
30
60
40
20 V+ = +20V V- = -20V -20 -15 -10 -5 0 VCOM (V) 5 10 15 20
10
20 V+ = +28V V- = 0 V+ = +36V V- = 0 24 30 36
0
0 -15 -10 -5 0 VCOM (V) 5 10 15
0 0 6 12 18 VCOM (V)
ON-RESISTANCE vs. VCOM AND TEMPERATURE (SINGLE SUPPLY)
DG411 toc04
ON/OFF-LEAKAGE CURRENT vs. TEMPERATURE
DG411 toc05
CHARGE INJECTION vs. VCOM
DG411 toc06
100 V+ = +12V V- = 0 80 TA = +85C RON () 60 TA = +25C TA = -40C
10,000 1000 LEAKAGE CURRENT (pA) 100 10 ICOM(OFF) 1 0.1 0.01 DUAL SUPPLIES: V+ = +15V, V- = -15V -40 -15 10 35 60 INO(OFF), INC(OFF) ICOM(ON)
40 30 20 Q (pC) DUAL SUPPLIES: 15V 10 0 -10 -20
40
20
SINGLE SUPPLY: +12V
0 0 2 4 6 VCOM (V) 8 10 12
85
-15
-10
-5
0 VCOM (V)
5
10
15
TEMPERATURE (C)
SUPPLY CURRENT vs. TEMPERATURE
DUAL SUPPLIES: V+ = +15V, V- = -15V, VIN_ = +5V 400 SUPPLY CURRENT (A) IGND I+
DG411 toc07
LOGIC-LEVEL THRESHOLD VOLTAGE vs. SUPPLY VOLTAGE
DG411 toc08
TURN-ON/TURN-OFF TIMES vs. SUPPLY VOLTAGE (DUAL SUPPLIES)
DG411 toc09
500
3.0
300 250 200 150 100 tON
THRESHOLD VOLTAGE (V)
2.5 tON/tOFF (ns)
300
2.0
200
100
1.5 DUAL OR SINGLE SUPPLIES 1.0 50 0 5 10 15 20 25 30 35 40 5
tOFF
I-
0 -40 -15 10 35 60 85 TEMPERATURE (C)
10
15
20
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V+, V-)
6
_______________________________________________________________________________________
Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches DG411F/DG412F/DG413F
Typical Operating Characteristics (continued)
(TA = +25C, unless otherwise noted.)
TURN-ON/TURN-OFF TIMES vs. SUPPLY VOLTAGE (SINGLE SUPPLY)
DG411 toc10
TURN-ON/TURN-OFF TIMES vs. TEMPERATURE (DUAL SUPPLIES)
DG411 toc11
TURN-ON/TURN-OFF TIMES vs. TEMPERATURE (SINGLE SUPPLY)
V+ = +12V, V- = 0 150
DG411 toc12
200
120 100 80
DUAL SUPPLIES: 15V
200
150 tON/tOFF (ns) tON/tOFF (ns) tON/tOFF (ns) tON 60 tOFF 40 50 tOFF V- = GND 0 9 18 27 36 SUPPLY VOLTAGE (V+) 0 -40 -15 10 35 60 85 TEMPERATURE (C) 20
tON 100
100
tON
50
tOFF
0 -40 -15 10 35 60 85 TEMPERATURE (C)
FREQUENCY RESPONSE
DG411 toc13
TOTAL HARMONIC DISTORTION vs. FREQUENCY
DG411 toc14
FAULT CURRENT vs. FAULT VOLTAGE (DUAL SUPPLIES)
150 100 DUAL SUPPLIES: V+ = +15V, V- = -15V
DG411 toc15
20 0
1
V+ = +15V, V- = -15V ON-RESPONSE
15V DUAL SUPPLIES IN = OUT = 600, VP-P = 5V
200
-20 LOSS (dB) -40 OFF-ISOLATION -60 -80 -100 -120 0.001 THD (%)
0.1 ICOM (A) 0.01
50 0 -50 -100
CROSSTALK 0.001 0.01 0.1 1 10 100 10 100 1k FREQUENCY (Hz) 10k 100k FREQUENCY (MHz)
-150 -200 -60 -40 -20
FOR |VCOM| < VSUPPLY, ICOM = VCOM/RL 0 VCOM (V) 20 40 60
FAULT CURRENT vs. FAULT VOLTAGE (SINGLE SUPPLY)
150 100 ICOM (A) 50 0 -50 -100 -150 -200 -60 -40 -20 0 VCOM (V) 20 40 60 FOR 0V < VCOM < VSUPPLY, ICOM = VCOM/RL
DG411 toc16
200
_______________________________________________________________________________________
7
Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches DG411F/DG412F/DG413F
Typical Operating Characteristics (continued)
(TA = +25C, unless otherwise noted.)
INPUT OVERVOLTAGE vs. OUTPUT
DG411 toc17
FAULT STEP RESPONSE (POSITIVE INPUT)
DG411 toc18
+25V VNO_, VNC_ INPUT GND +15V VCOM_ OUTPUT -22V GND -15V 20ms/div 2ms/div +25V VNO_, VNC_ INPUT +5V GND VCOM_ OUTPUT GND
FAULT STEP RESPONSE (NEGATIVE INPUT)
DG411 toc19
FAULT RECOVERY TIME (POSITIVE INPUT)
DG411 toc20
GND -5V VNO_, VNC_ INPUT -25V VNO_, VNC_ INPUT
+25V
+5V GND
GND VCOM_ OUTPUT -5V VCOM_ OUTPUT +5V GND 2ms/div 1s/div
FAULT RECOVERY TIME (NEGATIVE INPUT)
DG411 toc21
FAULT RESPONSE (V+ = 0, V- = -15V)
DG411 toc22
+25V VNO_, VNC_ INPUT GND -5V VNO_, VNC_ INPUT -25V GND
VCOM_ OUTPUT
GND -5V VCOM_ OUTPUT -25V GND
1s/div
2ms/div
8
_______________________________________________________________________________________
Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches
Pin Description
PIN NAME DG411F 1, 16, 9, 8 2, 15, 10, 7 3, 14, 11, 6 -- -- -- 4 5 12 13 DG412F 1, 16, 9, 8 2, 15, 10, 7 -- 3, 14, 11, 6 -- -- 4 5 12 13 DG413F 1, 16, 9, 8 2, 15, 10, 7 -- -- 3, 6 14, 11 4 5 12 13 IN1, IN2, IN3, IN4 COM1, COM2, COM3, COM4 NC1, NC2, NC3, NC4 NO1, NO2, NO3, NO4 NO1, NO4 NC2, NC3 VGND N.C. V+ Logic Control Digital Inputs Analog Switch Common Terminals Analog Switch Normally Closed Terminals Analog Switch Normally Open Terminals Analog Switch Normally Open Terminals Analog Switch Normally Closed Terminals Negative-Supply Voltage Input. Connect to GND for singlesupply operation. Bypass with a 0.1F capacitor to GND. Ground. Connect to digital ground. No Connection. Not internally connected. Positive-Supply Voltage Input. Bypass with a 0.1F capacitor to GND. FUNCTION
DG411F/DG412F/DG413F
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-.
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
Pin Compatibility
These switches have identical pinouts to common nonfault-protected CMOS switches. They allow for carefree
_______________________________________________________________________________________
Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches DG411F/DG412F/DG413F
the switch state. If the switch state is off, all FETs are turned off and both NO_ (or NC_) and COM_ are high impedance. 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.
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.
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.
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 1s. For negative faults, the recovery time is typically 0.5s. 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.
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.
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.
Ordering Information (continued)
PART DG412FEUE DG412FDY DG412FDJ DG413FEUE DG413FDY DG413FDJ TEMP RANGE -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C PIN-PACKAGE 16 TSSOP 16 SO 16 Plastic DIP 16 TSSOP 16 SO 16 Plastic DIP
Failure Modes
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.
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.
Chip Information
TRANSISTOR COUNT: 251 PROCESS: CMOS SUBSTRATE CONNECTED TO: V+
10
______________________________________________________________________________________
Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches DG411F/DG412F/DG413F
Test Circuits/Timing Diagrams
NORMALLY OPEN SWITCH CONSTRUCTION V+
HIGH FAULT P1 NO_ LOW FAULT COM_
N1
IN_
ON
GND
DG411F DG412F DG413F
VESD DIODE
Figure 1. Functional Diagram
V+ V+ 3V NO_ OR NC_ 10V VIN_ 0V VIN_ 50%
DG411F DG412F DG413F COM_
GND VVRL CL
VOUT VOUT
10V
90%
90%
0V tOFF tON
V- IS CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION.
Figure 2. Switch Turn-On/Turn-Off Times
______________________________________________________________________________________
11
Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches DG411F/DG412F/DG413F
Test Circuits/Timing Diagrams (continued)
V+ VIN_ IN_ IN_ V+ 3V NO_ NC_ 10V VIN_ 50% 0V tF < 5ns tR < 5ns
DG413F COM_
COM_ GND VVRL CL
VOUT
VNO_, VNC_
90%
VOUT 0V tBBM
V- IS CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION.
Figure 3. DG413F Break-Before-Make Interval
V+ VIN_ IN_ V+ RGEN NO_ OR NC_ 3V VGEN VOUT CL VV- 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 VIN_ 0V VOUT VOUT
DG411F DG412F DG413F COM_
GND V-
Figure 4. Charge Injection
V+ V+ V+ NO_
IN_
DG411F NC_ DG412F DG413F
GND
COM_ VV-
1MHz CAPACITANCE ANALYZER
V- 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
Test Circuits/Timing Diagrams (continued)
V+ 10nF 50 RESISTOR ONLY NEEDED FOR CROSSTALK AND ISOLATION VIN V+ 3.0V COM_ 50
DG411F/DG412F/DG413F
NETWORK ANALYZER 50
IN_
DG411F DG412F DG413F
NO_, NC_ GND V-
50 VOUT MEAS REF
50 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.
50
Figure 6. Frequency Response, Off-Isolation, and Crosstalk
Pin Configurations (continued)
TOP VIEW
IN1 COM1 NO1 VGND NO4 COM4 IN4 1 2 3 4 5 6 7 8 16 IN2 15 COM2 14 NO2 13 V+ IN1 COM1 NO1 VGND NO4 COM4 IN4 1 2 3 4 5 6 7 8 16 IN2 15 COM2 14 NC2 13 V+
DG412F
12 N.C. 11 NO3 10 COM3 9 IN3
DG413F
12 N.C. 11 NC3 10 COM3 9 IN3
DIP/TSSOP/SO
DG412F LOGIC SWITCH 0 1 OFF ON
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
Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches DG411F/DG412F/DG413F
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.)
14
______________________________________________________________________________________
PDIPN.EPS
Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches
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.)
DG411F/DG412F/DG413F
______________________________________________________________________________________
TSSOP,NO PADS.EPS
15
Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches 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.)
16L SOIC.EPS
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 (c) 2002 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

▲Up To Search▲

Price & Availability of DG412F

	To Download DG412F Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .