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19-0159; Rev 0; 9/93
Precision, Dual, High-Speed Analog Switches
__________________General Description
The MAX301/MAX303/MAX305 are precision, dual, highspeed analog switches. The single-pole single-throw (SPST) MAX301 and double-pole single-throw (DPST) MAX305 dual switches are normally open (NO). The single-pole doublethrow (SPDT) MAX303 has two NO and two normally closed (NC) poles. All three parts offer low on resistance (less than 35), guaranteed to match to within 2 between channels and to remain flat over the full analog signal range (3 max). They also offer low leakage (less than 250pA at +25C and less than 6nA at +85C) and fast switching (turn-on time less than 150ns and turn-off time less than 100ns). The MAX301/MAX303/MAX305 are fabricated with Maxim's new improved silicon-gate process for high system accuracy. Design improvements guarantee extremely low charge injection (15pC) and low power consumption (35W). A 44V maximum breakdown voltage allows rail-to-rail analog signal capability. These monolithic switches operate with a single positive supply (+10V to +30V) or with split supplies (4.5V to 20V) while retaining CMOS-logic input compatibility and fast switching. CMOS inputs provide reduced input loading.
________________________________Features
o Low On Resistance <22 Typical (35 Max) o Guaranteed Matched On Resistance Between Channels <2 o Guaranteed Flat On Resistance over Full Analog Signal Range 3 Max o Guaranteed Charge Injection <15pC o Guaranteed Off-Channel Leakage <6nA at +85C o Single-Supply Operation (+10V to +30V) Bipolar-Supply Operation (4.5V to 20V) o TTL-/CMOS-Logic Compatible o Rail-to-Rail Analog Signal Handling Capability
MAX301/MAX303/MAX305
_________________Ordering Information
PART MAX301CPE MAX301CSE MAX301CJE MAX301C/D MAX301EPE MAX301ESE MAX301EJE MAX301MJE MAX301MLP TEMP. RANGE 0C to +70C 0C to +70C 0C to +70C 0C to +70C -40C to +85C -40C to +85C -40C to +85C -55C to +125C -55C to +125C PIN-PACKAGE 16 Plastic DIP 16 Narrow SO 16 CERDIP Dice* 16 Plastic DIP 16 Narrow SO 16 CERDIP 16 CERDIP 20 LCC**
___________________________Applications
Sample-and-Hold Circuits Test Equipment Heads-Up Displays Guidance and Control Systems Military Radios Communication Systems Battery-Operated Systems PBX, PABX
Ordering Information continued on last page. * Contact factory for dice specifications. ** Contact factory for package availability.
___________________________Pin Configurations/Block Diagrams/Truth Tables
TOP VIEW
COM1 1 N.C. 2 N.C. 3 N.C. 4 N.C. 5 N.C. 6 N.C. 7 COM2 8 16 NO1 15 IN1 14 V13 GND COM1 1 N.C. 2 COM3 3 NC3 4 NC4 5 COM4 6 N.C. 7 COM2 8 16 NO1 15 IN1 14 V13 GND COM1 1 N.C. 2 COM3 3 NO3 4 NO4 5 COM4 6 N.C. 7 COM2 8 16 NO1 15 IN1 14 V13 GND
MAX301
12 V L 11 V+ 10 IN2 9 NO2
MAX303 12 V L
11 V+ 10 IN2 9 NO2
MAX305 12 V L
11 V+ 10 IN2 9 NO2
DIP/SO
MAX301 LOGIC SWITCH 0 1 OFF ON LOGIC 0 1
DIP/SO
MAX303 SWITCHES 1, 2 SWITCHES 3, 4 OFF ON ON OFF
DIP/SO
LOGIC 0 1 MAX305 SWITCH OFF ON
LCC packages on last page.
SWITCHES SHOWN FOR LOGIC "0" INPUT
_______________________________________________________________________ Maxim Integrated Products
1
Call toll free 1-800-998-8800 for free samples or literature.
Precision, Dual, High-Speed Analog Switches MAX301/MAX303/MAX305
ABSOLUTE MAXIMUM RATINGS
Voltage Referenced to VV+.......................................................................................44V GND ...................................................................................25V VL .................................................................(GND-0.3V) to (V+) +0.3V NO_, NC_, IN_, COM_ ................(V- - 2V) to (V+ + 2V) or 30mA, ..................................................................whichever occurs first Continuous Current, COM_, NO_, NC_...............................30mA Peak Current, COM_, NO_, NC_ (pulsed at 1ms, 10% duty cycle max) ..........................100mA Continuous Power Dissipation (TA = +70C) (Note 2) 16-Pin Plastic DIP (derate 10.53mW/C above +70C) .....842mW 16-Pin Narrow SO (derate 8.70mW/C above +70C) .......696mW 16-Pin CERDIP (derate 10.00mW/C above +70C)..........800mW 20-Pin LCC (derate 9.09mW/C above +70C) ..................727mW Operating Temperature Ranges: MAX30_C_ _ .......................................................0C to +70C MAX30_E_ _.....................................................-40C to +85C MAX30_M_ _ ..................................................-55C to +125C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10sec) .............................+300C
Note 1: Signals on NO_, NC_, or COM_ beyond 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.
ELECTRICAL CHARACTERISTICS
(V+ = 15V, V- = -15V, VL = +5V, GND = 0V, VINH = +2.4V, VINL = +0.8V, TA = TMIN to TMAX, unless otherwise noted.) PARAMETER SWITCH Analog-Signal Range VANA (Note 3) I(NC or NO) = -10mA, VCOM_ = 10V VINH = 2.4V, VINL = 0.8V I(NC or NO) = -10mA, VCOM_ = 10V V+ = 15V, V- = -15V IS = -10mA VCOM_ = 5V V+ = 15V, V- = -15V VCOM_ = +15.5V, VNC_ or VNO_ = 15.5V, V+ = 16.5V, V- = -16.5V TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX C, E M C, E M C, E, M C, E, M C, E, M C, E, M C, E M C, E M C, E M C, E M C, E M C, E M -0.50 -0.25 -6 -20 -0.50 -0.25 -6 -20 -1.0 -0.4 -20 -40.0 -0.04 -0.04 -0.01 -0.01 -0.01 -0.01 0.5 V20 20 V+ 35 30 55 45 2 3 3 5 0.50 0.25 6 20 0.50 0.25 6 20 1.0 0.4 20 40.0 nA nA nA V SYMBOL CONDITIONS TEMP. MIN TYP MAX UNITS RANGE (Note 2)
On Resistance
RON
On Resistance Match Between Channels (Note 4) On Resistance Flatness (Note 4)
RON RON
NC or NO Off Leakage Current
NC_(OFF) or NO_(OFF)
COM Off Leakage Current
COMOFF
VCOM_ = 15.5V, VNC_ or VNO_ = +15.5V, V+ = 16.5V, V- = -16.5V
COM On Leakage Current
COMON
VCOM_ = 15.5V, VNC_ or VNO_ = 15.5V, V+ = 16.5V, V- = -16.5V
2
________________________________________________________________________________________________
Precision, Dual, High-Speed Analog Switches
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 15V, V- = -15V, VL = +5V, GND = 0V, VINH = +2.4V, VINL = +0.8V, TA = TMIN to TMAX, unless otherwise noted.) PARAMETER INPUT Input Current with Input Voltage High Input Current with Input Voltage Low SUPPLY Power-Supply Range Positive Supply Current I+ All channels on or off, VIN = 0V or 5V, V+ = 16.5V, V- = -16.5V All channels on or off, VIN = 0V or 5V, V+ = 16.5V, V- = -16.5V All channels on or off, VIN = 0V or 5V, V+ = 16.5V, V- = -16.5V All channels on or off, VIN = 0V or 5V, V+ = 16.5V, V- = -16.5V Figure1 Figure 1 MAX303 only, Figure 2 CL = 10nF, VGEN = 0V, RGEN = 0, Figure 3 RL = 100, CL = 5pF, f = 1MHz, Figure 4 RL = 50, CL = 5pF, f = 1MHz, Figure 5 COFF CCOM(OFF) CCOM(ON) f = 1MHz, Figure 6 f = 1MHz, Figure 6 f = 1MHz, Figure 7 TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = +25C TA = +25C TA = +25C TA = +25C TA = +25C TA = +25C TA = +25C TA = +25C 10 4.5 -1.00 -5.00 -1.00 -5.00 -1.00 -5.00 -1.00 -5.00 -0.01 0.01 -0.01 0.01 20 1.00 5.00 1.00 5.00 1.00 5.00 1.00 5.00 A A A V A IINH IINH VIN_ = 2.4V, all others = 0.8V VIN_ = 0.8V, all others = 2.4V -1.000 0.005 -1.000 0.005 1.000 1.000 A A SYMBOL CONDITIONS MIN TYP MAX UNITS (Note 2)
MAX301/MAX303/MAX305
Negative Supply Current
I-
Logic Supply Current
IL IGND
Ground Current DYNAMIC Turn-On Time Turn-Off Time Break-Before-Make Time Delay (Note 3) Charge Injection (Note 3) Off Isolation (Note 5) Crosstalk (Note 6) Off Capacitance COM Off Capacitance Channel-On Capacitance
tON tOFF tD Q
100 60 20
150 100
ns ns ns
10
15
pC
OIRR
72 90 12 12 39
dB dB pF pF pF
Note 2: The algebraic convention, where the most negative value is a minimum and the most positive value a maximum, is used on this data sheet. Note 3: Guaranteed by design. Note 4: RON = RONMAX - RONMIN. On resistance match between channels and flatness are guaranteed only with specified voltages. Note 5: See Figure 4. Off isolation = 20log10 VCOM/VNC orVNO, VCOM = output, VNC or VNO = input to off switch. Note 6: Between any two switches. See Figure 5.
_________________________________________________________________________________________________ 3
Precision, Dual, High-Speed Analog Switches MAX301/MAX303/MAX305
________________________________________________Typical Operating Characteristics
(TA = +25C, unless otherwise noted).
ON RESISTANCE vs. VCOM AND POWER-SUPPLY VOLTAGE
50 45 40 RON () 35 30 25 20 15 10 5 -20 -10 0 VCOM (V) 10 20 5 -20 -10 0 VCOM (V) 10 20 C D 10 V+ = 15V, V- = -15V 20 0 5 10 VCOM (V) 15 20 40 B A: B: C: D: V+ = 5V, V- = -5V V+ = 10V, V- = -10V V+ = 15V, V- = -15V V+ = 20V, V- = -20V
MAX301-1
ON RESISTANCE vs. VCOM AND TEMPERATURE
MAX301-2
ON RESISTANCE vs. VCOM WITH V- = 0V
MAX301-3
35 30 25 RON () 20 15 TA = -55C TA = +125C TA = +85C TA = +25C
140 120 100 RON () 80 60 V+ = 10V V+ = 15V V+ = 20V
A
V+ = 5V
ON RESISTANCE vs. VCOM AND V- = OV
MAX301-4
OFF LEAKAGE CURRENTS vs. TEMPERATURE
V+ = 16.5V V- = -16.5V VCOM = 15V VNC OR VNO = 15V
MAX301-5
ON LEAKAGE CURRENTS vs. TEMPERATURE
V+ = 16.5V V- = -16.5V VCOM = 15V VNC OR VNO = 15V
MAX301-6
70 60 TA = +125C
100 10 OFF LEAKAGE (nA) 1 .1 .01 .001
100 10 ON LEAKAGE (nA) 1 .1 .01 .001 .0001
50 RON () 40 30 20 V+ = 12V, V- = 0V 10 0 5 10 VANA (V)
TA = +85C TA = +25C
.0001 15 20 -55 25 TEMPERATURE (C) 125
-55
25 TEMPERATURE (C)
125
CHARGE INJECTION vs. ANALOG VOLTAGE
MAX301-7
SUPPLY CURRENT vs. TEMPERATURE
MAX301-8
60 40 20 Q (pC) 0 -20 -40 V+ = 15V, V- = -15V -60 -20 -10 0 VCOM (V) 10
100 10 1 .1 .01 .001 .0001
I+, I-, IL (A)
I+ AT V+ = 16.5V I- AT V- = -16.5V IL AT VL = 5V
20
-55
25 TEMPERATURE (C)
125
4
_______________________________________________________________________________________
Precision, Dual, High-Speed Analog Switches
____________________Pin Descriptions
MAX301 PIN DIP/SO 1, 8 2-7 9, 16 10, 15 11 12 13 14 LCC 2, 10 1, 3-9, 11, 16 5, 7, 12, 20 13, 19 14 15 17 18 NAME COM1, COM2 N.C. NC1, NC2 IN2, IN1 V+ VL GND VNAME COM_ N.C. V+ VL GND VIN1, IN2 NC_, NO_ NAME COM_ N.C. V+ VL GND VIN1, IN2 NO_ FUNCTION Drain (Analog Signal) Not internally connected Source (Analog Signal) Digital Logic Inputs Positive Supply-Voltage Input--connected to substrate Logic Supply-Voltage Input Ground Negative Supply Voltage Input FUNCTION Drain (Analog Signal) Not internally connected Positive Supply-Voltage Input--connected to substrate Logic Supply-Voltage Input Ground Negative Supply Voltage Input Digital Logic Inputs Source (Analog Signal) FUNCTION Drain (Analog Signal) Not internally connected Positive Supply-Voltage Input--connected to substrate Logic Supply-Voltage Input Ground Negative Supply Voltage Digital Logic Inputs Source (Analog Signal)
VNO_ COM_ V+
__________Applications Information
Operation with Supply Voltages Other than 15V
The MAX301/MAX303/MAX305 switches operate with 4.5V to 20V bipolar supplies and a +10V to +30V single supply. In either case, analog signals ranging from V+ to V- can be switched. The Typical Operating Characteristics graphs show the typical on-resistance variation with analog signal and supply voltage. The usual on-resistance temperature coefficent is 0.5%/C (typ).
MAX301/MAX303/MAX305
Logic Inputs
The MAX301/MAX303/MAX305 operate with a single positive supply or with bipolar supplies. The devices maintain TTL compatibility with supplies anywhere in the 4.5V to 20V range as long as VL = +5V. If VL is connected to V+ or another supply at voltages other than +5V, the devices will operate at CMOS-logic level inputs.
MAX303 PIN DIP/SO 1, 8, 3, 6 2-7 11 12 13 14 15, 10 16, 9, 5, 4 LCC 2, 4, 8, 10 1, 3, 6, 9, 11, 16 14 15 17 18 19, 13 5, 7, 12, 20 LCC 2, 4, 8, 10 1, 3, 6, 9, 11, 16 14 15 17 18 19, 13 5, 7, 12, 20
Overvoltage Protection
Proper power-supply sequencing is recommended for all CMOS devices. It is important not to 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 VL, V-, and logic inputs. If power-supply sequencing is not possible, add two small signal diodes in series with the supply pins for overvoltage protection (Figure 1). Adding diodes reduces the analog signal range to 1V below V+ and 1V below V-, but low switch resistance and low leakage characteristics are unaffected. Device operation is unchanged, and the difference between V+ to V- should not exceed +44V.
MAX305 PIN DIP/SO 1, 8, 3, 6 2-7 11 12 13 14 15, 10 16, 9, 5, 4
Vg
Figure 1. Overvoltage Protection Using Blocking Diodes
________________________________________________________________________________________
5
Precision, Dual, High-Speed Analog Switches MAX301/MAX303/MAX305
+5V 50% 0V SWITCH INPUT SWITCH OUTPUT SWITCH INPUT tOFF VCOM VO 0.9VO VCOM = +10V for tON VCOM = -10V for tOFF tr < 20ns tf < 20ns SWITCH INPUT IN1 LOGIC INPUT GND VV0V -15V VO = VCOM RL RL = RON VL COM +15V V+ V+ NC OR NO RL = 1000 CL = 35pF VO
LOGIC INPUT
+3V
0V tON -VANA VO 0.9VO
REPEAT TEST FOR EACH SWITCH
LOGIC INPUT WAVEFORM IS INVERTED FOR SWITCHES THAT HAVE THE OPPOSITE LOGIC SENSE CONTROL
FOR LOAD CONDITIONS, SEE Electrical Characteristics. CL INCLUDES FIXTURE AND STRAY CAPACITANCE
Figure 2. Switching-Time Test Circuit
+5V LOGIC INPUT +3V 50% 0V VCOM VO1 0.9VO LOGIC INPUT VCOM_ = +10V VCOM_ = +10V VL COM_ NC_ COM_ IN_ GND VRL2 CL2 VO2 RL1 CL1 V+ NO VO1 +15V
0V SWITCH OUTPUT VCOM VO2 SWITCH OUTPUT 0V tD tD 0.9VO
0V
-15V
RL = 1000 CL = 35pF
CL INCLUDES FIXTURE AND STRAY CAPACITANCE. LOGIC 0 INPUT.
Figure 3. Break-Before-Make Test Circuit
+5V
+15V VO VO CL VO INX ON OFF ON
RGEN
VL COM
V+ NC OR NO
VGEN
GND
V-
10nF
0V
-15V Q = (VO)(CL)
Figure 4. Charge-Injection Test Circuit
6 _______________________________________________________________________________________
Precision, Dual, High-Speed Analog Switches MAX301/MAX303/MAX305
+15V +5V
C SIGNAL GENERATOR
C
V+ VCOM
VL
IN_ ANALYZER CH A CH B RL NC OR NO GND V-
0V, 2.4V
FREQUENCY TESTED 1 MHz
SIGNAL GENERATOR AUTOMATIC SYNTHESIZER
ANALYZER TRACKING SPECTRUM ANALYZER
C OFF ISOLATION = 20LOG VCOM VNC OR VNO
-15V 100 C = 5pF
Figure 5. Off Isolation
C +15V V+ VL V+
COM
+5V
C
SIGNAL GENERATOR
V NC OR NO
50
0V, 2.4V ANALYZER CH A CH B RL
IN2 IN_ NC OR NO GND VCOM
0V, 2.4V
FREQUENCY TESTED 1 MHz
SIGNAL GENERATOR AUTOMATIC SYNTHESIZER
ANALYZER TRACKING SPECTRUM ANALYZER
C
-15V 100 C = 5pF
Figure 6. Crosstalk Test Circuit
+15V C V+ V+ COM
+5V C C
+15V
+5V
C
VL
V+ COM_
VL
IN_ CAPACITANCE METER NC OR NO GND VC
0V, 2.4V
CAPACITANCE METER
IN_
0V, 2.4V
GND
V-
C
-15V
-15V
Figure 7. Channel-Off Capacitance
Figure 8. Channel-On Capacitance
7
_______________________________________________________________________________________
Precision, Dual, High-Speed Analog Switches MAX301/MAX303/MAX305
__Ordering Information (continued)
PART MAX303CPE MAX303CSE MAX303CJE MAX303C/D MAX303EPE MAX303ESE MAX303EJE MAX303MJE MAX303MLP MAX305CPE MAX305CSE MAX305CJE MAX305C/D MAX305EPE MAX305ESE MAX305EJE MAX305MJE MAX305MLP TEMP.RANGE 0C to +70C 0C to +70C 0C to +70C 0C to +70C -40C to +85C -40C to +85C -40C to +85C -55C to +125C -55C to +125C 0C to +70C 0C to +70C 0C to +70C 0C to +70C -40C to +85C -40C to +85C -40C to +85C -55C to +125C -55C to +125C PIN-PACKAGE 16 Plastic DIP 16 Narrow SO 16 CERDIP Dice* 16 Plastic DIP 16 Narrow SO 16 CERDIP 16 CERDIP 20 LCC**
COM2 10 N.C. 11 NC2 12 N.C. 4 N.C. 5 N.C. 6 N.C. 7 N.C. 8 18 V17 GND
_____Pin Configuration (continued)
2 COM1 1 N.C. 20 NC1 3 N.C.
TOP VIEW
MAX301
19 IN1
16 N.C. 15 VL 14 V+
16 Narrow SO 16 CERDIP Dice* 16 Plastic DIP 16 Narrow SO 16 CERDIP 16 CERDIP 20 LCC**
COM3 4 NC3 5 N.C. 6 NC4 7 COM4 8
N.C. 9
2 COM1
20 NO1
1 N.C.
3 N.C.
19 IN1
IN2 13
16 Plastic DIP
18 V17 GND
* Dice are tested at TA = +25C only. ** Contact factory for availability.
MAX303
16 N.C. 15 VL 14 V+
COM2 10
N.C. 11
NO2 12 20 NO1
N.C.
2 COM1
1 N.C.
3 N.C.
COM3 4 NO3 5 N.C. 6 NO4 7 COM4 8
19 IN1
IN2 13
9
18 V17 GND
MAX305
16 N.C. 15 VL 14 V+
COM2 10
N.C. 11
NO2 12
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.
8 ______________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 (c) 1994 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.
N.C.
IN2 13
9

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