DG444DY-T ,Improved, Quad, SPST Analog SwitchesFeaturesThe DG444/DG445 are quad, single-pole/single-throw Low r (85Ω max)(SPST) analog switches. ..
DG445 ,Analog Switch, SPST, Quad, NOpen, Ron = 100, Vlogic=5V, TTL Inputs, Power Supply ?V to ?0V and Single Supply 5V to 34V FaxBack 408-970-5600S-52433—Rev. F, 06-Sep-994-1DG444/445Vishay Siliconix
DG444CJ+-DG444DY+-DG444DY+T-DG444DY-T-DG445DY+
Improved, Quad, SPST Analog Switches
General DescriptionMaxim’s redesigned DG444/DG445 analog switches
now feature on-resistance matching (4Ωmax) between
switches and guaranteed on-resistance flatness over
the signal range (9Ωmax). These low on-resistance
switches conduct equally well in either direction. They
guarantee low charge injection (10pC max), low power
consumption (35µW max), and an electrostatic dis-
charge (ESD) tolerance of 2000V (min) per Method
3015.7. The new design offers lower off-leakage current
over temperature (less than 5nA at +85°C).
The DG444/DG445 are quad, single-pole/single-throw
(SPST) analog switches. The DG444 has four normally
closed switches and the DG445 has four normally open
switches. Switching times are less than 250ns for tON
and less than 70ns for tOFF. Operation is from a single
+10V to +30V supply, or bipolar ±4.5V to ±20V sup-
plies. Maxim’s improved DG444/DG445 continue to be
fabricated with a 44V silicon-gate process.
________________________ApplicationsSample-and-Hold CircuitsCommunication Systems
Test EquipmentBattery-Operated Systems
Heads-Up DisplaysPBX, PABX
Guidance and Control SystemsAudio Signal Routing
Military RadiosModems/Faxes
New FeaturesPlug-In Upgrades for Industry-Standard DG444/DG445Improved rONMatch Between Channels (4Ωmax)Guaranteed rFLAT(ON)Over Signal Range (9Ωmax)Improved Charge Injection (10pC max)Improved Off-Leakage Current Over Temperature
(< 5nA at +85°C) Withstand ESD (2000V min)
per Method 3015.7
Existing FeaturesLow rDS(ON)(85Ωmax)Single-Supply Operation +10V to +30V
Bipolar-Supply Operation ±4.5V to ±20VLow Power Consumption (35µW max)Rail-to-Rail®Signal HandlingTTL/CMOS-Logic Compatible
______________Ordering Information
DG444/DG445
Improved, Quad, SPST Analog Switches19-4705; Rev 3; 9/01
Pin Configurations/Functional Diagrams/Truth Tables
Ordering Information continued at end of data sheet.*Contact factory for dice specifications.
Rail-to Rail is a registered trademark of Nippon Motorola, Ltd.
DG444/DG445
Improved, Quad, SPST Analog Switches
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS—Dual Supplies(V+ = 15V, V- = -15V, VL= 5V, GND = 0, VINH= 2.4V, VINL= 0.8V, TA= TMINto TMAX, unless otherwise noted.)
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....................................................(GND -0.3V) to (V+ +0.3V)
Digital Inputs VS, VD (Note 1).........(V- -2V) to (V+ +2V) or 30mA
(whichever occurs first)
Continuous Current (any terminal)......................................30mA
Peak Current, S or D (pulsed at 1ms, 10% duty cycle max).100mA
Continuous Power Dissipation (TA= +70°C)
16-Pin PDIP (derate 10.53mW/°C above +70°C)..........842mW
6-Pin Narrow SO (derate 8.70mW/°C above +70°C)....696mW
16-Pin QFN (derate 19.2mW/°C above +70°C)..........1538mW
Operating Temperature Ranges
DG444C/DG445C................................................0°C to +70°C
DG444D, E/DG445D, E....................................-40°C to +85°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
Note 1:Signals on S, D, or IN exceeding V+ or V- are clamped by internal diodes. Limit forward current to maximum current rating.
DG444/DG445
Improved, Quad, SPST Analog Switches
ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)(V+ = 15V, V- = -15V, VL= 5V, GND = 0, VINH= 2.4V, VINL= 0.8V, TA= TMINto TMAX, unless otherwise noted.)
DG444/DG445
Improved, Quad, SPST Analog Switches
ELECTRICAL CHARACTERISTICS—Single Supply(V+ = 12V, V- = 0, VL= 5V, GND = 0, VINH= 2.4V, VINL= 0.8V, TA= TMINto TMAX, unless otherwise noted.)
Note 2:Typical values are for design aid only, are not guaranteed, and are not subject to production testing. The algebraic convention,
where the most negative value is a minimum and the most positive value a maximum, is used in this data sheet.
Note 3:Guaranteed by design.
Note 4:On-resistance match between channels and flatness are guaranteed only with bipolar-supply operation. Flatness is defined
as the difference between the maximum and the minimum value of on-resistance as measured at the extremes of the speci-
fied analog signal range.
Note 5:Leakage parameters IS(OFF), ID(OFF), ID(ON), and IS(ON)are100% tested at the maximum rated hot temperature and guaranteed at +25°C.
Note 6:Off-Isolation Rejection Ratio = 20log (VD/VS), VD= output, VS= input to off switch.
Note 7:Between any two switches.
__________________________________________Typical Operating Characteristics
DG444/DG445
Improved, Quad, SPST Analog Switches
Typical Operating Characteristics(TA = +25°C, unless otherwise noted.)
ON-RESISTANCE vs. VD
AND UNIPOLAR-SUPPLY VOLTAGEVD (V)
rDS(ON)
DG444/5-4
ON-RESISTANCE vs. VD, UNIPOLAR-
SUPPLY VOLTAGE AND TEMPERATURE
rDS(ON) 812
VD (V)
DG444/5-7
ON-RESISTANCE vs. VD AND
BIPOLAR-SUPPLY VOLTAGEDS(ON)
VD (V)
DG444/5-5
ON-RESISTANCE vs. VD, BIPOLAR-
SUPPLY VOLTAGE AND TEMPERATURErDS(ON)
VD (V)
DG444/5-6
SWITCHING TIME vs.
BIPOLAR-SUPPLY VOLTAGE
TIME (ns)
160±10±15±20
BIPOLAR-SUPPLY VOLTAGE (V)
DG444/5-8
SWITCHING TIME vs.
UNIPOLAR-SUPPLY VOLTAGETIME (ns)
UNIPOLAR-SUPPLY VOLTAGE (V)
DG444/5-9
CHARGE INJECTION vs.
VD VOLTAGEQ (pC)
-15-1001015D (V)
DG444/5-10
CHARGE INJECTION vs.
VD VOLTAGEQ (pC)
-1051015D (V)
DG444/5-11
DG444/DG445
Improved, Quad, SPST Analog SwitchesFigure 2. Switching Time
