PS320/PS321/PS322 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Precision, Dual-Supply Analog Switches Features Description • Low On-Resistance (17W typ.) Minimizes Distortion and Error Voltages • Low Glitching Reduces Step Errors in Sample-and-Holds • Split-Supply Operation (±3V to ±8V) • Improved Second Sources for MAX320/MAX321/MAX322 • On-Resistance Matching Between Channels, 0.2Ω typ. • On-Resistance Flatness, <2Ω typ. • Low Off-Channel Leakage, <5nA @ +85°C • TTL/CMOS Logic Compatible • Fast Switching Speed, tON <150ns • Guaranteed Break-Before-Make action (PS322) eliminates momentary crosstalk • Rail-to-Rail Analog Signal Dynamic Range • Low Power Consumption, <1.25mW • MSOP Package Minimizes Board Area The PS320/PS321/PS322 are improved high-precision, medium voltage analog switches designed to operate with +3V to +8V power supplies. The PS320 is a dual, single-pole single-throw (SPST), normally open (NO) switch. The PS321 has the same pinout as the PS320 but it has two normally closed (NC) switches. The PS322 has one normally open (NO) and one normally closed (NC) switch per package. When on, each switch conducts current equally well in either direction. In the off state, each switch blocks voltages up to the power-supply rails. With ±5V power supplies, the PS320/PS321/PS322 guarantee <35ΩON-resistance. ON-resistance matching between channels is within 2Ω. ON-resistance flatness is less than 4Ωover the specified range. All three devices guarantee low leakage currents (<100pA @25°C, <10nA @+85°C) and fast switching speeds (t ON <150ns). Break-before-make switching action protects against momentary crosstalk (PS322). Applications • Audio Switching and Routing • Portable Instruments • Data Acquisition Systems •· Sample-and-Holds • Telecommunication Systems • Battery-Powered Systems For single-supply operation the PS323/PS324/PS325 are recommended. Functional Diagrams, Pin Configurations, and Truth Tables PS320 PS322 PS321 NO1 1 8 V+ COM1 2 7 IN1 IN2 3 6 COM2 V- 4 5 NO2 Top View NC1 1 8 V+ COM1 2 7 IN1 IN2 3 6 COM2 V- 4 5 NC2 N01 1 8 V+ COM1 2 7 IN1 IN2 3 6 COM2 V- 4 5 NC2 Top View Top View Switches shown for logic “0” input PS321 PS320 PS322 Logic Switch Logic Switch Logic 0 1 O FF ON 0 1 ON O FF 0 1 1 Switch1 Switch2 O FF ON ON O FF PS8183D 01/11/01 PS320/PS321/PS322 Precision, Dual-Supply Analog Switches 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Absolute Maximum Ratings Thermal Information Voltages Referenced to V– V+ ...................................................................... -0.3V to +17V Continuous Power Dissipation Plastic DIP (derate 6mW/ ºC above +70ºC) .................... 500mW VIN, VCOM, VNC, VNO(1) ............................. (V-) -2V to (V+) +2V ............................................... or 30mA, whichever occurs first Narrow SO (derate 6mW/ ºC above +70ºC) .................... 450mW MSOP (derate 4mW/ ºC above +70ºC) ........................... 330mW Current (any terminal) ..................................................... 30mA Storage Temperature ........................................ -65ºC to +150ºC Peak Current, COM, NO, NC Lead Temperature (soldering, 10s) ................................ +300ºC (pulsed at 1ms, 10% duty cycle) ................................... 100mA ESD per Method 3015.7 ............................................. > 2000V 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. Electrical Specifications - Dual Supplies (V± = ± 5V ±10%, VINH = 3.5V, VINL = 1V) Parame te r Symbol Conditions Te mp. (°C) M in.(2) Full V– Typ.(1) M ax.(2) Units V+ V Analog Switch Analog Signal Range (3) ON- Resistance VANALOG RON V+ = 4.5V, V– = –4.5V, VNO or VNC = ±3.5V ICOM = 1mA, 25 16 Full ON- Resistance Match Between Channels(4) ∆RON ON- Resistance Flatness(5) RFLAT(ON) V+ = 5V, V– = –5V VNO or VNC = ±3V, ICOM = 1mA, V+ = 5V, V– = –5V, ICOM = 1mA , VNO or VNC = ±3V NO or NC Off Leakage Current(6) INO(OFF) or INC(OFF) V+ = 5.5V, V– = –5.5V, VCOM = ±4.5V, VNO or VNC = ±4.5V COM Off Leakage Current(6) ICOM(OFF) V+ = 5.5V, V– = –5.5V VCOM = ±4.5V, VNO or VNC = ±4.5V COM On Leakage Current(6) ICOM(ON) V+ = 5.5V , V– = –5.5V, VCOM = ±4.5V VNO or VNC = ±4.5V 35 45 25 0.3 Full 2 Ω 4 25 1 Full 4 6 25 –0.1 Full –5 25 –0.1 Full –5 25 –0.2 Full –10 –0.01 0.1 5 –0.01 0.1 nA 5 –0.04 0.2 10 continued next page 2 PS8183D 01/11/01 PS320/PS321/PS322 Precision, Dual-Supply Analog Switches 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Electrical Specifications - Dual Supplies (V± = ± 5V ±10%, VINH = 3.5V, VINL = 1V) continued Parame te r Te mp. (°C) M in.(1) Symbol Conditions Input Current with Input Voltage High IIN H VIN = 3.5V, all others = 0V – 0.5 Input Current with Input Voltage Low IIN L VIN = 0V, all others = V+ – 0.5 Typ.(2) M ax.(1) Units Logic Input Logic High Input Voltage V+ = 5V ±10%, V– = – V+ VIN H 0.005 0.5 mA Full 0.005 0.5 3.5 3V < V+ < 8V, V– = – V+ 0.6V+ V Logic Low Input Voltage V+ = 5V ±10%, V– = – V+ VIN L 1 3V < V+ < 8V, V– = – V+ 0.3V+ Dynamic 25 Turn- On Time tO N VC O M = ±3V, Figure 2 65 Full 175 25 Turn- Off Time tO F F 150 35 Full 100 ns 150 Break- Before- Make Time Delay(3) tD PS322 only, RL = 300Ω, CL= 35pF, Figure 3 Charge Injection(3) Q CL=1nF, VGEN = 0V, RGEN = 0Ω, Figure 4 8 Off Isolation(7) OIRR RL = 50Ω, CL= 5pF, f = 1MHz, Figure 5 –72 Crosstalk XTALK RL = 50Ω, CL= 5pF, f = 1MHz, Figure 6 –85 NC or NO Off Capacitance C (O F F ) f = 1MHz, Figure 7 9 COM Off Capacitance C C O M (O F F ) f = 1MHz, Figure 7 9 CO M O n Capacitance C C O M (O N ) f = 1MHz, Figure 8 22 2 5 12 pC dB 25 pF Supply Power- Supply Range V+, V– Positive Supply Current I+ Negative Supply Current ±2.7 25 V+ = 5.5V, V- = – 5.5V, VIN = 0V or V+, All channels on or off ±8 80 Full V 125 200 mA 25 – 125 Full – 200 – 80 I– Notes: 1. The algebraic convention, where the most negative value is a minimum and the most positive is a maximum, is used in this data sheet. 2. Typical values are for DESIGN AID ONLY, not guaranteed or subject to production testing. 3. Guaranteed by design 4. ∆RΟΝ = ∆RΟΝ max. –∆RΟΝ min. 5. Flatness is defined as the difference between the maximum and minimum value of on-resistance measured. 6. Leakage parameters are 100% tested at maximum rated hot temperature and guaranteed by correlation at +25ºC. 7. Off Isolation = 20log10 [ VCOM / (VNC or VNO) ]. 3 PS8183D 01/11/01 PS320/PS321/PS322 Precision, Dual-Supply Analog Switches 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Test Circuits/Timing Diagrams +5V NO or NC COM VCOM = 3V VOUT RL 300Ω IN Logic +5V Input 0V 50% tOFF CL 35pF Switch Output Logic Input tr <20ns tf <20ns V- VOUT 90% 90% 0V tON -5V LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES THAT HAVE OPPOSITE LOGIC CL INCLUDES FIXTURE AND STRAY CAPACITANCE RL VOUT = VCOM RL + RON ( ) Figure 2. Switching Time +5V +5V V+ +3V COM1 NO1 COM2 NC2 VOUT1 VOUT2 IN RL 300 Logic Input RL 300 50% Logic Input CL 35pF 50% 90% VOUT1 0V CL 35 pF VOUT2 V- 90% 90% -5V tD 0V CLINCLUDES FIXTURE AND STRAY CAPACITANCE. tD Figure 3. Break-Before-Make Interval (PS322 only) +5V RGEN V+ COM VGEN ∆VOUT VOUT NO or NC VOUT IN CL OFF OFF ON 1nF IN Logic Input IN OFF -5V ON OFF Q = (∆VOUT)(CL) IN POLARITY DEPENDS ON NO OR NC SWITCH FUNCTION Figure 4. Charge Injection 4 PS8183D 01/11/01 PS320/PS321/PS322 Precision, Dual-Supply Analog Switches 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Test Circuits/Timing Diagrams (continued) 10nF +5V 10nF Signal Generator 0dBm V+ 0dBm +5V COM1 V+ IN COM Analyzer NC or NO COM Analyzer VRL RL 10nF 50 Ω -5V COM2 N02 10nF +5V V+ V+ IN Capacitance Meter VIN f = 1kHz NC or NO f = 1kHz NC 10nF -5V +5V COM Capacitance Meter VIN Figure 6. Crosstalk Figure 5. Off Isolation 10nF IN2 IN1 VIN VIN 50Ω N01 COM 10nF COM IN VIN NC or NO -5V -5V GND Figure 8. Channel-On Capacitance Figure 7. Channel-Off Capacitance Ordering Information Package Part 8 Plastic DIP PS321EPA 8 Narrow SO PS321ESA 8 Narrow SO 8 MSOP PS322CPA 8 Plastic DIP 8 Plastic DIP P S 322C S A PS320ESA 8 Narrow SO PS322CUAX PS321CPA 8 Plastic DIP PS322EPA 8 Narrow SO PS322ESA Part Te mp. Range PS320CPA P S 320C S A 0ºC to +70ºC PS320CUAX PS320EPA PS321CUAX 0ºC to +70ºC Package 8 Plastic DIP –40ºC to +85ºC –40ºC to +85ºC PS321CSA Te mp. Range 0ºC to +70ºC 8 Narrow SO 8 MSOP 8 Plastic DIP –40ºC to +85ºC 8 Narrow SO 8 MSOP Pericom Semiconductor Corporation 2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com 5 PS8183D 01/11/01