MAX4518EEE Просмотр технического описания (PDF) - Maxim Integrated

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MAX4518EEE

Precision, 4-Channel/Dual 2-Channel, Low-Voltage, CMOS Analog Multiplexers

Maxim Integrated 

Precision, 4-Channel/Dual 2-Channel,

Low-Voltage, CMOS Analog Multiplexers

_________________________________Test Circuits/Timing Diagrams (continued)

+5V

RS

NO

V+

VEN EN

VS

CHANNEL

SELECT

A0

A1

MAX4518

MAX4519 COM

Figure 5. Charge Injection

GND

V-

-5V

+3V

LOGIC

INPUT

OFF

ON

OFF

VEN

0V

VOUT

CL = 1000nF

VOUT

∆VOUT

∆VOUT IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER

ERROR Q WHEN THE CHANNEL TURNS OFF.

Q = ∆VOUT x CL

V+ 10nF

V+

V+

V+

EN

NO

MAX4518

MAX4519

A

COM

V-

GND

NETWORK

ANALYZER

VIN 50Ω

50Ω

VOUT

MEAS.

REF

50Ω 50Ω

OFF ISOLATION = 20log VOUT

VIN

ON LOSS =

20log

VOUT

VIN

CROSSTALK =

20log

VOUT

VIN

V- 10nF

Figure 6. Off Isolation, On Loss, Crosstalk

NOTES: MEASUREMENTS ARE STANDARDIZED AGAINST SHORT AT SOCKET TERMINALS.

OFF ISOLATION IS MEASURED BETWEEN COM AND “OFF” TERMINAL ON EACH SWITCH.

ON LOSS IS MEASURED BETWEEN COM AND “ON” TERMINAL ON EACH SWITCH.

CROSSTALK IS MEASURED BETWEEN COMA AND COMB

TERMINALS ON EACH DEVICE.

SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED.

CHANNEL

SELECT

+5V

A2

V+

NO1

A1 MAX4518 NO8

MAX4519

A0

COM

GND EN V-

1MHz

CAPACITANCE

ANALYZER

f = 1MHz

-5V

Figure 7. NO/COM Capacitance

10 ______________________________________________________________________________________

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