PS398/PS399 Precision 8-Ch, Diff. 4-Ch, 17V Analog Multiplexers Features Description ÎÎLow On-Resistance (60-ohm typ.) Minimizes Distortion and The PS398/PS399 are improved high precision analog multiplexers. The PS398, an 8-channel single-ended mux, selects one of eight inputs to a common output as determined by a 3-bit address A0-A2. An EN (enable) pin when low disables all switches, useful when stacking several devices. The PS399 is a 4-channel differential multiplexer. It selects one of four differential inputs to a common differential output as determined by a 2-bit address A0, A1. An EN pin may be driven low to disable all switches. Error Voltages ÎÎLow Glitching Reduces Step Errors and Improves Settling Times. Charge Injection: <5pC ÎÎSplit-Supply Operation (+3V to +8V) ÎÎImproved Second Sources for MAX398/MAX399 ÎÎOn-Resistance Matching Between Channels: <6Ohm These multiplexers operate with dual supplies from +3V to +8V. Single-supply operation is possible from +3V to +15V. With +5V power supplies, the PS398/PS399 guarantee <100-ohm onresistance. On-Resistance matching between channels is within 6-ohm. On-Resistance flatness is less than 11-ohm over the specified signal range. ÎÎOn-Resistance Flatness: <11-ohm ÎÎLow Off-Channel Leakage, INO(OFF) < 1nA @ +85oC, ICOM(ON), <2.5nA @ +85oC ÎÎTTL/CMOS Logic Compatible ÎÎFast Switching Speed, t TRANS <250ns Each switch conducts current equally well in either direction when on. In the off state each switch blocks voltages up to the powersupply rails. ÎÎBreak-Before-Make action eliminates momentary crosstalk ÎÎRail-to-Rail Analog Signal Range ÎÎLow Power Consumption, <300μW Both devices guarantee low leakage currents (<2.5nA at +85oC) and fast switching speeds (tTRANS <250ns). Break-before-make switching action protects against momentary crosstalk between channels. ÎÎPackaging (Pb-free & Green): àà 16-pin SOIC (W) Applications ÎÎData Acquisition Systems ÎÎAudio Switching and Routing ÎÎTest Equipment ÎÎPBX, PABX ÎÎTelecommunication Systems ÎÎBattery-Powered Systems Block Diagrams and Pin Configurations PS399 PS398 16 A1 AO 1 15 A2 EN 2 V- 3 14 V+ NO1A 4 13 NO1B A0 1 EN 2 V- 3 14 GND NO1 4 13 V+ Decoders/Drivers Decoders/Drivers 16 A1 15 GND NO2 5 12 NO5 NO2A 5 12 NO2B NO3 6 11 NO6 NO3A 6 11 NO3B NO4 7 10 NO7 NO4A 7 10 NO4B COM 8 9 NO8 COMA 8 9 All trademarks are property of their respective owners. 11-0001 1 COMB www.pericom.com 03/02/11 PS398/PS399 Precision 8-Ch, Diff. 4-Ch, 17V Analog Multiplexers Truth Tables PS398 PS399 A2 A1 A0 EN On Switch A1 A0 EN On Switch X X X 0 None X X 0 None 0 0 0 1 1 0 0 1 1 0 0 1 1 2 0 1 1 2 0 1 0 1 3 1 0 1 3 0 1 1 1 4 1 1 1 4 1 0 0 1 5 Logic “0”, VAL ≤ 0.8V 1 0 1 1 6 Logic “1”, VAH ≥ 2.4V 1 1 0 1 7 1 1 1 1 8 Absolute Maximum Ratings Parameter Min. Max. V+ -0.3 17 GND -0.3 17 GND -0.3 ( V+) + 0.3V (V-)-2 (V+) +2V Units Voltages Referenced to V- VIN, VCOM, VNO(1) Current (any terminal) 30 Peak Current, COM, NO, NC (pulsed at 1ms, 10% duty cycle) 100 ESD per Method 3015.7 >2000 V mA V Continuous Power Dissipation SOIC (derate 8.7mW/ °C above +70°C) 650 Storage Temperature -65 150 Lead Temperature (soldering, 10s) 300 mW °C Stress beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. Note: 1. Signals on NO, COM, or logic inputs exceeding V+ or V- are clamped by internal diodes. Limit forward diode current to 30mA. All trademarks are property of their respective owners. 11-0001 2 www.pericom.com 03/02/11 PS398/PS399 Precision 8-Ch, Diff. 4-Ch, 17V Analog Multiplexers Electrical Specifications - Dual Supplies (V± = ±5V ± 10%, GND = 0V, VAH = VENH = 2.4V, VAL = VENL = 0.8V) Parameters Symbol Conditions Temp (°C) Min(2) Full V- Typ(1) Max(2) Units V+ V Analog Switch Analog Signal Range(3) VANALOG On-Resistance RON V+ = 4.5V, V- = -4.5V, VCOM = ±3.5V, INO = 1mA On-Resistance Match Between Channels(4) ΔRON VCOM or VNC = ±3.5V, INO = 1mA, V+ = 5V, V- = -5V On-Resisatance Flatness(5) R FLAT(ON) V+ = 5V, V- = -5V, INO = 1mA, VCOM = ±3V, 0V INO(OFF) V+ = 5.5V, V- = -5.5V, VCOM = ±4.5V, VNO = ±4.5V ICOM(OFF) V+ = 5.5V, V- = -5.5V VCOM = ± 4.5V, VNO = -/+4.5V NO Off Leakage Current(6) COM Off Leakage Current(6) COM On Leakage Current(7) ICOM(ON) V+ = 5.5V, V- = -5.5V VCOM = ±4.5V VNO = 4.5V PS398 PS399 PS398 PS399 25 60 100 Full 125 25 6 Full 8 25 11 Full 14 25 -0.1 0.1 Full -1.0 1.0 25 -0.2 50 Full -2.5 100 25 -0.1 50 Full -1.5 100 25 -0.4 0.4 Full -5 5 25 -0.2 0.2 Full -2.5 2.5 ohm nA Logic Input 2.4 Logic High Input Voltage VAH, VENH Logic Low Input Voltage VAL, VENL Input Current with Input Voltage High IAH, IENH VA = VEN = 2.4V Input Current with Input Voltage Low IAL, IENL VA = VEN = 0.8V All trademarks are property of their respective owners. 0.8 Full -0.1 V 0.1 μA 11-0001 -0.1 3 0.1 www.pericom.com 03/02/11 PS398/PS399 Precision 8-Ch, Diff. 4-Ch, 17V Analog Multiplexers Dynamic Transition Time tRANS Figure 1 150 Break-Before-Make Time Delay tOPEN Figure 3 Enable Turn-On Time tON(EN) Figure 2 Enable Turn-Off Time tOFF(EN) Figure 2 Charge Injection(3) Q CL= 1nF, VS = 0V, R S = 0Ohm, 2.8 Off Isolation(7) OIRR VEN = 0V, R L= 1kOhm, f = 100kHz -101 Crosstalk XTALK R L = 1kOhm, f = 100kHz, Figure 6 -92 Logic Input Capacitance CIN f =1MHz NO Off Capacitance C(OFF) f =1MHz, VEN = VNO = 0V COM Off Capacitance CCOM(OFF) f =1MHz, VEN = VCOM =0V PS398 31 PS399 14 COM Off Capacitance CCOM(ON) f =1MHz, VCOM = 0V PS398 35 PS399 20 0 25 40 72 Full 150 ns 250 25 55 Full 150 200 5 pC dB 2.5 25 3.6 pF Supply Power-Supply Range Positive-Supply Current I+ Negative-Supply Current I- Ground Current IGND VEN = VA = 0V or V+, V+ =5.5V, V- = -5.5V Full ±3 ±8 -1 1 -1 1 -1 1 V μA Notes: 1. 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. ΔRON = RON max - RON min. 5. Flatness is defined as the difference between the maximum and minimum values 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 / V NO. See Figure 5. All trademarks are property of their respective owners. 11-0001 4 www.pericom.com 03/02/11 PS398/PS399 Precision 8-Ch, Diff. 4-Ch, 17V Analog Multiplexers Electrical Specifications - Single 5V Supply (V+ = + 5V ± 10%, V- = 0V, GND = 0V, VAH = VENH = +2.4, VAL = VENL = +0.8V) Parameters Symbol Conditions Temp (°C) Min(1) Full 0 Typ(2) Max(1) Units V+ V Analog Switch Analog Signal Range(3) VCOM, VNO On-Resistance RON INO = 1mA, VCOM = 3.5V, V+ = 4.5V RON Matching Between Channels(4) ΔRON INO = 1mA, VCOM = 3.5V, V+ = 4.5V On-Resisatance Flatness R FLAT INO = 1mA, VCOM = 1.5V, 2.5V, 3.5V, V+ = 5V NO-Off Leakage Current(6) INO(OFF) INO = 4.5V, VCOM = 0V, V+ = 5.5V COM-Off Leakage Current(6) COM-On Leakage Current(7) ICOM(OFF) ICOM(ON) VCOM = 4.5V, VNO =0V, V+ = 5.5V VCOM = 4.5V, VNO =4.5V, V+ = 5.5V PS398 PS399 PS398 PS399 25 100 125 Full 280 25 11 Full 13 25 18 Full 22 25 -0.1 0.1 Full -1.0 1.0 25 -0.2 50 Full -2.5 100 25 -0.2 50 Full -1.5 100 25 -0.4 0.4 Full -5 5 25 -0.2 0.2 Full -2.5 2.5 ohm nA Digital Logic Input Logic High Input Voltage VAH, VENH Logic Low Input Voltage VAL, VENL Input Current with Input Voltage High IAH, IENH VA = VEN = 2.4V Input Current with Input Voltage Low IAL, IENL VA = VEN = 0.8V 2.4 0.8 Full -0.1 0.1 -0.1 0.1 3 15 -1.0 1.0 -1.0 1.0 -1.0 1.0 V μA Supply Power-Supply Range V+ Positive-Supply Current I+ Negative-Supply Current I- Ground Current IGND All trademarks are property of their respective owners. VEN = V+ or 0V, VA = 0V, V+ = 5.5V, V- = 0V 11-0001 5 Full www.pericom.com V μA 03/02/11 PS398/PS399 Precision 8-Ch, Diff. 4-Ch, 17V Analog Multiplexers Dynamic Transition Time tRANS Break-Before-Make Time Delay tOPEN Enable Turn-On Time tON(EN) Enable Turn-Off Time tOFF(EN) Charge Injection(3) Q 72 VNO = 3V 25 10 36 110 Full 200 ns 275 25 65 Full CL= 1nF, VS = 0V, R S = 0Ohm, 245 125 200 25 2.8 5 pC Electrical Specifications - Single 3V Supply (V+ = + 5V ± 10%, V- = 0V, GND = 0V, VAH = VENH = +2.4, VAL = VENL = +0.8V) Parameters Symbol Conditions Temp (°C) Min(1) Full 0 Typ(2) Max(1) Units V+ V Switch Analog Signal Range(3) VCOM, VNO On-Resistance RON INO = 1mA, VCOM = 1.5V, V+ = 3V Transition Time(3) tRANS Figure 1, VIN = 2.4V VNO1 = 1.5V, VNO8 = 0V 200 575 Enable Turn-On Time tON(EN) Figure 2, VINH = 2.4V VINL = 0V, VNO1 = 1.5V 200 500 Enable Turn-Off Time tOFF(EN) Figure 2, VINH = 2.4V VINL = 0V, VNO1 = 1.5V 92 400 Charge Injection(3) Q CL= 1nF, VS = 0V, R S = 0Ohm, 2 5 25 160 Full 375 425 ohm Dynamic ns 25 pC Notes: 1. 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. ΔRON = RON max - RON min. 5. Flatness is defined as the difference between the maximum and minimum values of on-resistance measured. 6. Leakage parameters are 100% tested at maximum rated hot temperature and guaranteed by correlation at +25ºC. 7. Worst-case isolation is on channel 4 because of its proximity to the COM pin. Off isolation = 20log VCOM/V NO, VCOM = output, V NO = input to off switch 8. Off Isolation = 20log10 VCOM / V NO. See Figure 5. All trademarks are property of their respective owners. 11-0001 6 www.pericom.com 03/02/11 PS398/PS399 Precision 8-Ch, Diff. 4-Ch, 17V Analog Multiplexers Electrical Specifications - Single +3.3V Supply (V+ = 3.3V +10%, GND = 0V, VINH = 2.4V, VINL= 0.8V) Parameters Symbol Conditions Temp (°C) Min(1) Typ(2) Max(1) Units V+ V Analog Switch Analog Signal Range(3) VANALOG On-Resistance RON 0 V+ = 3V, ICOM = 1mA VNO or VNC = 1.5V 25 40 70 Full 50 80 25 50 125 Full 100 250 25 30 75 Full 60 150 25 1 5 pC 0.01 1 μA ohm Dynamic Turn-On Time(3) tON Turn-Off Time(3) tOFF Charge Injection(3) Q VNO or VNC = 1.5V, Figure 2 CL = 1nF, VGEN = 0V, RGEN = 0-ohm, Figure 4 ns Supply Positive Supply Current I+ V+ = 3.6V, VIN = 0V or V+, all channels on or off Full -1 Electrical Specifications - Single +12V Supply (V+ = 12V +10%, GND = 0V, VINH = 4V, VINL= 0.8V) Parameters Symbol Conditions Temp (°C) Min(1) Typ(2) Max(1) Units V+ V Analog Switch Analog Signal Range(3) VANALOG On-Resistance RON 0 V+ = 10.8V, ICOM = 1mA VNO or VNC = 110V 25 15 25 Full 20 40 25 25 50 Full 50 100 25 20 40 Full 40 75 25 1 5 pC 0.01 1 μA ohm Dynamic Turn-On Time(3) tON Turn-Off Time(3) tOFF Charge Injection(3) Q VNO or VNC = 1.5V, Figure 2 CL = 1nF, VGEN = 0V, RGEN = 0-ohm, Figure 4 ns Supply Positive Supply Current I+ All trademarks are property of their respective owners. V+ = 13V, VIN = 0V or V+, all channels on or off 11-0001 7 Full -1 www.pericom.com 03/02/11 PS398/PS399 Precision 8-Ch, Diff. 4-Ch, 17V Analog Multiplexers Test Circuits/Timing Diagrams +5V 50Ohm +5V A2 A1 A0 V+ NO1 NO2 - NO7 PS398 NO8 EN +5V -5V COM V- GND VOUT 35pF 300Ohm -5V +5V V+ A1 A0 NO2A - NO4B PS398 NO4A 50Ohm +5V NO1A EN COM V- GND 300Ohm -5V +3V Switch Output VOUT +5V tr < 20ns tf < 20ns 50% Logic 0V Input VEN VNO1 90% 0V 90% VNO8 ttrans -5V ttrans ON 35pF Figure 1. Transition Time +5V EN V+ A2 A1 A0 PS398 NO1 50 NO2-NO8 GND +5V V+ A0 NO1A-NO4A, NO2B-NO4B, COMA PS399 GND VOUT COM V300 -5V EN 50 A1 +5V NO1B COMB V300 -5V Logic Input VEN 35pF +3V 0V tON(EN) 0V Switch Output VOUT +5V tr <20ns tf <20ns 50% tOFF(EN) 90% 10% VOUT 35pF Figure 2. Enable Switching Time All trademarks are property of their respective owners. 11-0001 8 www.pericom.com 03/02/11 PS398/PS399 Precision 8-Ch, Diff. 4-Ch, 17V Analog Multiplexers +5V NO1-NO8 A2 A1 A0 +5V +3V tr <20ns tf <20ns 50% 0V +5V PS398 50Ohm -5V Switch Output V OUT VOUT COM V- GND VA Logic Input VA V+ +2.4V VEN EN 35pF 300 Ohm 80% 0V tOPEN Figure 3. Break-Before-Make Interval +5V RS VEN VS Channel Select Logic Input V EN V+ NO EN A0 A1 A2 PS398 GND VOUT COM C L=1000pF V- +3V 0FF 0FF ON 0V X C ∆VOUT V OUT -5V ∆VOUTIS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER WHEN THE CHANNEL TURNS OFF. ∆V OUT xC L Figure 4. Charge Injection +5V 10nF V IN 50 R S = Ohm N01 V+ +5V V IN NO1 R = 1k N08 Ohm PS398 A0 A1 A2 GND EN COM 50 R G = Ohm VOUT R L =1k Ohm PS398 A0 A1 A2 GND COM +5V VOUT R L=1k Ohm V-5V CROSSTALK = 20log -5V V OUT V IN V OUT V IN Figure 5. Off Isolation All trademarks are property of their respective owners. EN 10nF V- OFF ISOLATION = 20log V+ N01 N02 N08 10nF Figure 6. CrossTalk 11-0001 9 www.pericom.com 03/02/11 PS398/PS399 Precision 8-Ch, Diff. 4-Ch, 17V Analog Multiplexers +5V A2 Channel Select A1 V+ N01 PS398 1MHz Capacitance Analyzer N08 A0 GND EN V- COM f =1MHz -5V Figure 8. NO/COM Capacitance Application Information Where n = number of channels scanned: 8 for PS398, 4 for PS399. tTRANS is given on the specification table: 150 ns max. Overvoltage Protection Proper power-supply sequencing is recommended for all CMOS devices. Do not 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 V-, and then logic inputs. If power-supply sequencing is not possible, add two small signal diodes or two current limiting resistors in series with the supply pins for overvoltage protection (Figure 9). Adding diodes reduces the analog signal range, but low switch resistance and low leakage characteristics are unaffected. Settling time is the time needed for the output to stabilize within the desired accuracy band of +1 LSB (least significant bit). Other factors determining settling time are: signal source impedance, capacitive load at the output. Figure 10 illustrates the steady state model. To figure out what the settling time due to the multiplexer is, we can assume that RS = 0Ω, and CL = 0. In real life, the effects of RS and CL should be taken into account when performing these calculations. Maximum Sampling Rate From the sampling theorem, the sampling frequency needed to properly recover the original signal should be more than twice its maximum component frequency. In real applications, sampling at three or four times the maximum signal frequency is customary. Positive Supply V+ The maximum sampling rate of a multiplexer is determined by its transition time (tTRANS), the number of channels being multiplexed, and the settling time (tSETTLING) of the sampled signal at the output. The maximum sampling rate is: fS = 1 NO (1) COM n (tTRANS + tSETTLING) Vg V- Figure 9. Overvoltage protection is accomplished using two external blocking diodes or two current limiting resistors. All trademarks are property of their respective owners. 11-0001 10 www.pericom.com 03/02/11 PS398/PS399 Precision 8-Ch, Diff. 4-Ch, 17V Analog Multiplexers RON V IN RS CL CCOM(ON) VS Figure 10. Equivalent model of one multiplexer channel The table below shows how many time constants (mτ) are needed to reach an accuracy of one LSB. τ = RON x CCOM(ON) In equation (1) above, n = 8, tTRANS = 150ns, tSETTLING = 9τ, τ = 100ohm x 54pF 1 Bits Accuracy (%) m 8 0.25 6 12 0.012 9 15 0.0017 11 fS = 8 [150ns + 9(100ohm x 54pF)] , or fS = 630kHz. Assuming a x4 oversampling rate, the maximum sampling speed for the PS398 would be 630÷4 = 157kHz. Now, let’s calculate what the maximum sampling rate for the PS398. Assume a 12-bit accuracy and room temperature operation. All trademarks are property of their respective owners. 11-0001 11 www.pericom.com 03/02/11 PS398/PS399 Precision 8-Ch, Diff. 4-Ch, 17V Analog Multiplexers Packaging Mechanical: 16-Pin SOIC (W) DOCUMENT CONTROL NO. PD - 1004 16 REVISION: E DATE: 03/09/05 .149 .157 3.78 3.99 1 .0099 .0196 .386 .393 9.80 10.00 x 45˚ .0075 .0098 0-8˚ .053 .068 1 .0155 .0260 0.393 0.660 REF 1.35 1.75 0.41 1.27 SEATING PLANE .050 BSC 1.27 0.25 0.50 .013 .020 0.330 0.508 0.19 0.25 .016 .050 .2284 .2440 5.80 6.20 .0040 0.10 .0098 0.25 Pericom Semiconductor Corporation 3545 N. 1st Street, San Jose, CA 95134 1-800-435-2335 • www.pericom.com X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS Notes: 1) Controlling dimensions in millimeters. 2) Ref: JEDEC MS-012D/AC DESCRIPTION: 16-Pin, 150-Mil Wide, SOIC PACKAGE CODE: W Ordering Information Ordering Code Package Code Package Type PS398CSEE W Pb-free & Green, 16-pin SOIC 1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/ All trademarks are property of their respective owners. 11-0001 12 www.pericom.com 03/02/11