MAX4554ESE 데이터 시트보기 (PDF) - Maxim Integrated

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MAX4554ESE

Force-Sense Switches

Maxim Integrated 

Force-Sense Switches

_________________________________Test Circuits/Timing Diagrams (continued)

V+ VL

VIN_ IN_ V+

VL

NO_ OR NC_

50Ω

MAX4554

MAX4555

MAX4556 COM_

EN

GND V-

V-

VOUT

CL

1000pF

V- IS CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION.

Figure 13. Charge Injection

VL

VIN

0V

VOUT

∆VOUT

∆VOUT IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER

ERROR Q WHEN THE CHANNEL TURNS OFF.

Q = ∆VOUT x CL

VL

ADDRESS

SELECT

V+ VL

V+ VL

MAX4554 NO_

MAX4555

MAX4556 NC_

IN_

COM_

EN GND V-

V-

1MHz

CAPACITANCE

ANALYZER

Figure 14. COM_, NO_, NC_ Capacitance

V+ 10nF

VL 10nF

V+

VL COM_

VIN

NETWORK

ANALYZER

OFF ISOLATION = 20 log

VOUT

VIN

50Ω

50Ω

VL

MAX4554

MAX4555

MAX4556

VOUT

MEAS.

REF

ADDRESS

IN_

NO_, NC_

SELECT

EN GND

V-

50Ω

50Ω

ON LOSS = 20 log

VOUT

VIN

CROSSTALK = 20 log

VOUT

VIN

10nF

V-

MEASUREMENTS ARE STANDARDIZED AGAINST SHORT AT SOCKET TERMINALS. OFF ISOLATION IS MEASURED BETWEEN COM_ AND "OFF" NO_ OR NC_ TERMINALS.

ON LOSS IS MEASURED BETWEEN COM_ AND "ON" NO_ OR NC_ TERMINALS. CROSSTALK IS MEASURED BETWEEN COM_ TERMINALS WITH ALL SWITCHES ON.

SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED. V- IS CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION.

Figure 15. Frequency Response, Off-Isolation, and Crosstalk

26 ______________________________________________________________________________________

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