ps398 Pericom Semiconductor Corporation, ps398 Datasheet
ps398
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ps398 Summary of contents
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... COM Description 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 (enable) pin when low disables all switches, use- ful when stacking several devices. The PS399 is a 4-channel differential multiplexer ...
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... Note 1: Signals on NO, COM, or logic inputs exceeding are clamped by internal diodes. Limit forward diode current to 30mA 0.8V AL 2.4V AH PS398/PS399 PS8185F 09/28/04 ...
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... PS398/PS399 = V = 2.4V 0.8V) AH ENH AL ENL ( ) ° ...
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... ± PS398/PS399 = 0.8V) ENL ( ) ± ...
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... PS398/PS399 ( ) ...
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... ° PS398/PS399 ( ) ...
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... Test Circuits/Timing Diagrams Precision 8-Ch, Diff. 4-Ch, 17V Analog Multiplexers Figure 1. Transition Time Figure 2. Enable Switching Time 7 PS398/PS399 PS8185F 09/28/04 ...
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... Figure 3. Break-Before-Make Interval Logic +3V Input OUT COM C =1000pF OUT -5V Figure 4. Charge Injection 8 0FF 0FF ∆V OUT ∆V IS THE MEASURED VOLTAGE DUE TO CHARGE OUT TRANSFER WHEN THE CHANNEL TURNS OFF. ∆V OUT Figure 6. CrossTalk PS398/PS399 PS8185F 09/28/04 ...
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... GND V- -5V Figure 8. NO/COM Capacitance Where n = number of channels scanned: 8 for PS398, 4 for PS399. t 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 imped- ance, capacitive load at the output ...
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... S Figure 10. Equivalent model of one multiplexer channel In equation (1) above COM(ON) = 100ohm x 54pF Assuming a x4 oversampling rate, the maximum sampling speed for the PS398 would be 630 4 = 157kHz 150ns, t TRANS 1 _______________________ , [150ns + 9(100ohm x 54pF 630kHz. ...
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... Package Code W 16-pin SOIC W Pb-free & Green, 16-pin SOIC W 16-pin SOIC W Pb-free & Green, 16-pin SOIC W 16-pin SOIC W Pb-free & Green, 16-pin SOIC W 16-pin SOIC W Pb-free & Green, 16-pin SOIC 1 1 PS398/PS399 0.25 .0099 x 45˚ 0.50 .0196 .0075 0.19 .0098 0.25 0.41 .016 1.27 .050 .2284 .2440 5.80 6.20 ...