DG642 Vishay Siliconix, DG642 Datasheet
DG642
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DG642 Summary of contents
Page 1
... High Current: 100 mA, DG642 The DG641/642/643 are high performance monolithic video switches designed for switching wide bandwidth analog and digital signals. DG641 is a quad SPST, DG642 is a single SPDT, and DG643 is a dual SPDT function. These devices have exceptionally low on-resistances (5 capacitance and high current handling capability ...
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... Plastic DIP DG641DJ 16-Pin Narrow SOIC DG641DY 8-Pin Plastic DIP DG642DJ 8-Pin Narrow SOIC DG642DY 16-Pin Plastic DIP DG643DJ 16-Pin Narrow SOIC DG643DY –0 Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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... MHz IN L Room See Figure 5 Room Full Room Full DG641/642/643 Vishay Siliconix Limits – Min Typ Max Unit – –10 –0.02 10 – ...
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... DG641/642/643 Vishay Siliconix Parameter Symbol Analog Switch d d Analog Signal Range Analog Signal Range V V ANALOG ANALOG Drain-Source On-Resistance r DS(on) r Match r DS(on) DS(on) Source Off Leakage Current I S(off) Drain Off Leakage Current I D(off) Channel On Leakage Current I D(on) Digital Control Input Voltage High V INH Input Voltage Low ...
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... DG641/642/643 Vishay Siliconix Leakages vs. Temperature – 100 125 Temperature ( C) DG642 r vs. Drain Voltage DS(on V– = –3 V 125 –55 C – – Drain Voltage (V) D Off Isolation DG641/643 DG642 10 100 f – Frequency (MHz) www.vishay.com FaxBack 408-970-5600 4-5 ...
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... OFF 100 125 0 Charge Injection vs 1000 pF L DG641/643 DG642 –2 – – Drain Voltage (V) D Operating Supply Voltage Range Operating Voltage Area –1 –2 –3 –4 – ...
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... O The charge injection in coulombs FIGURE 3. Charge Injection + GND V– C – Off Isolation = 20 log V O FIGURE 4. Off Isolation DG641/642/643 Vishay Siliconix t < < 50% 90 OFF OFF www.vishay.com FaxBack 408-970-5600 ...
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... Circuit layout is facilitated by the interchangeability of source and drain terminals. Frequency Response A single switch on-channel exhibits both resistance [r and capacitance [C attenuation effect on the analog signal – which is frequency dependent (like an RC low-pass filter). The –3 dB bandwidth of the DG641/642/643 is typically 500 MHz (into 50 DG642 OUT ...
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... Figure 8 shows a 4-channel video multiplexer using a DG641. In Figure 9, two coax cables terminated on 75 video signals to the DG642 switch. The two drains tied together lower the on-state capacitance. An Si582 video amplifier drives a double terminated 75- cable. The double terminated coax cable eliminates line reflections ...
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... TTL Channel Select FIGURE Video Multiplexing Using the DG641 TTL Channel Select FIGURE 9. 2-Channel Video Selector Using the DG642 SELECT 1 / DG643 2 FIGURE 10. Active Low Pass Filter with Selectable Inputs and Break Frequencies www ...