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21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PS394
Precision, Quad, SPDT, 17V Analog Switch
Description
The PS394 is a precision, low-voltage, quad, single-pole/doublethrow (SPDT) analog switch. The four independent switches operate with bipolar supplies ranging from 2.7V to 8V, or with a single supply of +2.7V to +15V. The PS394 offers low On-resistance (less than 35 Ohm), guaranteed to match within 2 Ohm between channels and to remain flat over the analog signal range (4 Ohm Max.). It also offers break-before-make switching (10ns typical), with turn-off times less than 75ns and turn-on times less than 130ns. The PS394 is ideal for portable operation since quiescent current runs less than 1A with all inputs high or low. This monolithic, quad switch is fabricated using Pericoms 17V silicon-gate process. Design improvements guarantee extremely low charge injection (10pC), low power consumption (10W), and electrostatic discharge (ESD) greater than 2000V. Logic Inputs are TTL and CMOS compatible and guaranteed over a +0.8V to +2.4V range. Logic inputs and switched analog signals can range anywhere between the supply voltages without damage.
Features
Low On-Resistance (17 Ohm typ.) Minimizes Distortion and Error Voltages Low Glitching Reduces Step Errors and Improves Settling Times. Charge Injection: <10pC Dual-Supply Operation (2.7V to 8V) Single-Supply Operation (+2.7V to +15V) Improved Second Sources for MAX394 On-Resistance Matching Between Channels: <2 Ohm On-Resistance Flatness: 4 Ohm (Max.) Low Off-Channel Leakage, INO(OFF) < 2.5nA @ +85C TTL/CMOS Logic Compatible (w/ +5V or 5V supplies) Break-Before-Make action eliminates momentary crosstalk Rail-to-Rail Analog Signal Range Narrow SOIC and QSOP Packages Minimize Board Area
Applications
Data Acquisition Systems Audio Switching and Routing Test Equipment PBX, PABX Telecommunication Systems Battery-Powered Systems
Pin Configuration
IN1 NO1 COM1 NC1 VGND NC2 COM2 NO2 IN2
1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11
Pin Description
Name
IN4 NO4 COM4 NC4 V+ N.C. NC3 COM3 NO3 IN3
Function Logic- Levels Inputs Normally Open Swithces Common Switch Poles Normally Closed Switches Negative Power Supply Ground Not Internally Connected Positive Power Supply
IN1 - IN4 NO1 - NO4 COM1 - COM4 N C1 - N C4 V GND N.C. V+
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PS394 Precision, Quad, SPDT, 17V Analog Switch
Absolute Maximum Ratings
Voltages Referenced to GND V+ ....................................................................0.3V to +17V V ....................................................................+0.3V to 17V V+ to V .......................................................... 0.3V to +17V COM_, NO_, NC_, IN_(1) ....................... (V 2V) to (V+ +2V) or 30mA, whichever occurs first Continuous Current, Any Pin ...................................... 30mA Peak Current, Any Pin (pulsed at 1ms, 10% duty cycle max.) ..................... 100mA Continuous power Dissipation (TA = +70C) Plastic DIP (derate 10.53mW/C above +70C) ..... 842mW Narrow SO (derate 8.70mW/C above +70C) ...... 696mW Operating Temperature Ranges PS394C_P ...................................................... 0C to +70C PS394E_P .................................................. 40C to +85C Storage Temperature Range ....................... 65C to +150C Lead Temperature (soldering, 10sec) ......................... +300C Note 1: Signals on NC, NO, COM, or IN exceeding V+ or V are clamped by internal diodes. Limit forward diode current to maximum current rating. CAUTION Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied.
Applications Information
Operation with Supply Voltages Other than 5V The PS394 switch operates with 2.7V to 8V bipolar supplies and a +2.7V to +15V 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 coefficient is 0.5%/C (typ). Power-Supply Sequencing and Overvoltage Protection Do not exceed the absolute maximum ratings, because stresses beyond the listed ratings may cause permanent damage to the device. Proper power-supply sequencing is recommended for all CMOS devices. Always apply V+, followed by V- (when using split supplies) before applying analog signals or logic inputs, especially if the analog or logic signals are not current-limited. If this sequencing is not possible and if the analog or logic inputs are not current limited to less than 30mA, add a single diode (D1) for single-supply operation (Figure 1). If using dual supplies or if the analog signal can dip below ground in single-supply operation, add two small signal diodes (D1, D2), as shown in Figure 1. Adding protection diodes reduces the analog signal range to a diode drop above V- for D2. Leakage is not affected by adding the diodes. On-resistance increases by a small amount at low supply voltages. Maximum supply voltage (V- to V+) must not exceed 17V. Adding diodes D1 and D2 also protects against some overvoltage situations. With the circuit of Figure 1, if the supply voltage is below the absolute maximum rating and if a fault voltage up to the absolute maximum rating is applied to an analog signal pin, no damage will result. For example, with 5V supplies, analog signals up to 8.5V will not damage the circuit of Figure 1. If only a single fault signal is present, the fault voltage can go to +12V or -12V without damage.
+5V D1 V+
* COM *
* NO or NC *
V- D1 +5V *Internal Protection Diodes
Figure 1. Overvoltage Protection using Blocking Diodes
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PS394 Precision, Quad, SPDT, 17V Analog Switch
Electrical Characteristics Dual Supplies
Parame te r Switch Analog Signal Range VCOM, VNO, VNC RON (note 3) Symbol
(V+ = 5V 10%, V = 5V 10%, GND = 0V, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted.)
Conditions Te mp. Range M in.(2) Typ.(2) M ax.(2) Units
V 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 C, E C, E C, E C, E C, E C, E C, E C, E C, E 0.2 2.5 0.4 5.0 0.04 0.01 0.5 20
V+ 35 45 2 4 4 6 0.2 2.5 0.4 5.0
V
On- Resistance
V+ = 4.5V, V = 4.5V, VNC or VNO = 3.5V, ICOM = 10mA, VINH = 2.4V, VINL = 0.8V VNC or VNO = 3V, ICOM = 10mA, V+ = 5V, V = 5V VNC or VNO = +3V, 0V, 3V; ICOM = 10mA, V+ = 5V; V = 5V VCOM = 4.5V, VNC or VNO = 4.5V, V+ = 5.5V, V = 5.5V VCOM = 4.5V, VNC or VNO = 4.5V, V+ = 5.5V, V = 5.5V
On- Resistance Match Between Channels(4) On- Resistance Flatness(4) NC or NO Off Leakage Current(5) COM Leakage Current(5) Digital Logic Input Input Current with Input Voltage High Input Current with Input Voltage Low Logic High Input Voltage Logic Low Input Voltage
RON
Ohm
RFLAT(ON) INC(OFF) or INO(OFF) ICOM(ON)
nA
IINH IINL VA_H VA_L
VIN = 2.4V, all others = 0.8V VIN = 0.8V, all others = 2.4V TA = TMIN to TMAX TA = TMIN to TMAX
1.0 1.0 2.4
0.005 0.005
1.0 A 1.0
V 0.8
3
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PS394 Precision, Quad, SPDT, 17V Analog Switch
Electrical Characteristics Dual Supplies (continued)
Parame te r Dynamic Turn- On- Time tON VCOM = 3V, Figure 2 Symbol Conditions
(V+ = 5V 10%, V = 5V 10%, GND = 0V, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted.)
Te mp. Range M in.(2) Typ.(2) M ax.(2) Units
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 2
82
130 175
Turn- off- Time Break- Before- Make Time Delay (3) Charge Injection (3) Off Isolation (6) Crosstalk
(7)
tOFF tD VCTE VISO VCT C O FF CCOM(OFF) CCOM(ON)
VCOM = 3V, Figure 2 Figure 5 CL = 1.0nF, VGEN = 0V, RGEN = 0 Ohm, Figure 6 RL = 50 Ohm, CL = 5pF, f = 1 MHz, Figure 3 RL = 50 Ohm, CL = 5pF, f = 1 MHz, Figure 8 f = 1 MHz, Figure 3 f = 1 MHz, Figure 3 f = 1 MHz, Figure 4
57
75 100
ns
10 5 66 dBm 88 12 12 39 pF 10 pC
Off Capacitance COM Off Capacitance Channel On Capacitance Supply Power- Supply Range Positive Supply Current Negative Supply Current
2.4 I+ I All channels on or off, V+ = 5.5V, V = 5.5V, VIN = 0V or V+ All channels on or off, V+ = 5.5V, V = 5.5V, VIN = 0V or V+ 1.0 1.0 0.06 0.01
8 1.0
V
A 1.0
4
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PS394 Precision, Quad, SPDT, 17V Analog Switch
Electrical Characteristics Single +5V Supply
Parame te r Switch Analog Signal Range VC O M , VN O , VN C RO N (note 3) Symbol
(V+ = 5V 10%, V = 0V, GND = 0V, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted.)
Conditions Te mp. Range M in.(2) Typ.(2) M ax.(2) Units
0V TA = +25C TA = TM IN to TM AX TA = +25C TA = TM IN to TM AX TA = +25C TA = TM IN to TM AX TA = +25C TA = TM IN to TM AX TA = +25C TA = TM IN to TM AX C, E C, E C, E C, E C, E C, E C, E C, E C, E C, E 25
V+ 65
V
O n- Resistance
V+ = 5.0V, V = 0V, VN C or VN O = 3.5V, IC O M = 1.0mA, VIN H = 2.4V, VIN L = 0.8V VN C or VN O = 3V, IC O M = 1.0mA, V+ = 5V VN C or VN O = 3V, 2V, 1V IC O M = 1.0mA; V+ = 5V, V = 0V VC O M = 0V, VN C or VN O = 4.5V, V+ = 5.5V, V = 0V VC O M = 4.5V, VN C or VN O = 4.5V, V+ = 5.5V, V = 0V
75 0.5 2 4 6 8 0.2 2.5
0.4 5.0 0.04 O hm
O n- Resistance Match Between Channels(4) O n- Resistance Flatness(4) NC or NO O ff Leakage Current(8) CO M Leakage Current(8) D igital Logic Input Input Current with Input Voltage High Input Current with Input Voltage Low D ynamic Turn- O n- Time(3)
RO N
RF LAT(O N ) IN C (O F F ) or IN O (O F F ) IC O M (O N )
0.01
0.2 2.5
0.4 5.0 nA
IIN H IIN L
VIN = 2.4V, all others = 0.8V VIN = 0.8V, all others = 2.4V
1.0 1.0
0.005 0.005
1.0 A 1.0
tO N
VC O M = 3V, Figure 2
TA = +25C TA = TM IN to TM AX TA = +25C TA = TM IN to TM AX TA = +25C 5
160
250 300
Turn- off- Time(3) Break- Before- Make Time Delay (3) Charge Injection (3) Supply Power- Supply Range Positive Supply Current Negative Supply Current
tO F F tD VC TE
VC O M = 3V, Figure 2
60
125 175
ns
20 3 5 pC
CL = 1.0nF, VGEN = 0V, RGEN = 0 O hm
TA = +25C
V+ I+ I All channels on or off, VIN = 0V or V+, V+ = 5.5V, V = 0V All channels on or off, VIN = 0V or V+, V+ = 5.5V, V = 0V
2.4 1.0 1.0 0.01 0.01
16 1.0
V
A 1.0
5
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PS394 Precision, Quad, SPDT, 17V Analog Switch
Electrical Characteristics Single +3.3V Supply
Parame te r Switch Analog Signal Range VCOM, VNO, VNC RON INC(OFF) or INO(OFF) ICOM(ON) (note 3) V+ = 3V, V = 0V, VNC or VNO = 1.5V, ICOM = 1.0mA, VINH = 2.4V, VINL = 0.8V VCOM = 0V, VNC or VNO = 3V, V+ = 3.6V, V = 0V VCOM = 3V, VNC or VNO = 3V, V+ = 3.6V, V = 0V Symbol
(V+ = 3.0V to 3.6V, GND = 0V, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted.)
Conditions Te mp. Range M in.(2) Typ.(2) M ax.(2) Units
0V TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX C, E C, E C, E C, E C, E C, E 75
V+ 185
V
On- Resistance
250 0.2 2.5
0.4 5.0 0.04
Ohm
NC or NO Off Leakage Current(8) COM Leakage Current(8) Digital Logic Input Input Current with Input Voltage High Input Current with Input Voltage Low Dynamic Turn- On- Time(3)
0.01
0.2 2.5
0.4 5.0 nA
IINH IINL
VIN = 2.4V, all others = 0.8V VIN = 0.8V, all others = 2.4V
1.0 1.0
0.005 0.005
1.0 A 1.0
tON
VCOM = 1.5V, Figure 2
TA = +25C
400 ns
Turn- off- Time(3) Break- Before- Make Time Delay (3) Charge Injection (3) Supply Power- Supply Range Positive Supply Current Negative Supply Current
tOFF tD VCTE
VCOM = 1.5V, Figure 2 Figure 5 CL = 1.0nF, VGEN = 0V, RGEN = 0 Ohm Figure 6
TA = +25C TA = +25C TA = +25C 5 20 1
150
5
pC
V+ I+ I All channels on or off, VIN = 0V or V+, V+ = 3.6V, V = 0V All channels on or off, VIN = 0V or V+, V+ = 3.6V, V = 0V
2.7 1.0 1.0 0.01 0.01
16 1.0
V
A 1.0
Notes: 2. The algebraic covention, where the most negative value is a minimum and the most positive value a maximum, is used in this data sheet. 3. Guaranteed by design 4. RON = RON(MAX). 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 over the specified analog signal range. 5. Leakage parameters are 100% tested at maximum rated hot temperature and guaranteed by correlation at room temperature. 6. See Figure 6. Off isolation = 20log10 VCOM/VNC or VNO, VCOM = output, VNC or NO = input to off switch 7. Between any two switches. See Figure 3. 8. Leakage testing at single supply is guaranteed by testing with dual supplies. 6
PS8444 01/13/00
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PS394 Precision, Quad, SPDT, 17V Analog Switch
Test Circuits/Timing Diagrams
tR < 20ns tF < 20ns
50% 50%
VIN
3V 0V
tON tOFF tOPEN +10V VCOM
50% 50% 50%
+10V -10V IN_ Logic Input V+ +15V
NC_ COM_ NO_
Switch Output
300 Ohm GND V- -15V
0V
50%
-10V
tOFF tON tOPEN
(Repeat Test for IN2, IN3, and IN4)
Figure 2. Switching-Time Circuit
C
+5V V+ COM IN NC
or
C
+5V V+ COM
Capacitance Meter
_0V or 2.4V
Capacitance Meter
IN NC
or
0V or 2.4V
NO GND
V- -5V
C
NO GND
V- -5V
C
Figure 3. Channel Off Capacitance
+3V Logic Input
50%
Figure 4. Channel On Capacitance
+5V V+ COM_ VO1 VO2 RL1 CL1 V- -5V
CL Includes Fixture and Stray Capacitance. Logic 0 Input
0V VCOM VO2 0.9V0
NO NC
IN_ GND RL2 CL2
0V Switch Output VCOM 0V Switch Output VO2 tD tD 0.9V0
Logic Input
RL = 1kOhm CL = 35pF
Figure 5. Break-Before-Make Delay
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PS394 Precision, Quad, SPDT, 17V Analog Switch
+5V V0 V+ RGEN COM_ NC or NO CL GND IN_ V- -5V
10nF
V0 V0 IN_ ON OFF ON
VGEN
Q = (V0)(CL)
Figure 6. Charge Injection
C
Signal Generator
+5V V+ IN_
0V, 2.4V
COM_
Fre que ncy Te s te d 1 MHz
Signal Ge ne rator Automatic Synthesizer
Analyze r Tracking Spectrum Analyzer
NC_ or NO_
Analyzer CH A CH B
RL 50
GND
V- -5V
C
VISO = 20LOG
C = 5pF
VCOM VNC or VNO
Figure 7. Off Isolation
Ordering Information
Part Numbe r Te mpe rature Range PS394CPP PS394CWP PS394EPP PS394EWP 0C to +70C 0C to +70C 40C to +85C 40C to +85C Pin - Package 20- pin Plastic DIP 20- pin Wide SO 20- pin Plastic DIP 20- pin Wide SO
Pericom Semiconductor Corporation 2380 Bering Drive * San Jose, CA 95131 * 1-800-435-2336 * Fax (408) 435-1100 * http://www.pericom.com
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PS8444 01/13/00

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