MAX4741(2001) Ver la hoja de datos (PDF) - Maxim Integrated

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MAX4741
(Rev.:2001)

0.8Ω, Low-Voltage, Single-Supply Dual SPST Analog Switches

Maxim Integrated 

0.8Ω, Low-Voltage, Single-Supply Dual SPST

Analog Switches

Test Circuits/Timing Diagrams (continued)

V+ 0.1µF

V+ NO_

OR

NC_ *

MAX4741

MAX4742

V+

MAX4743 COM_

IN_

GND

NETWORK

ANALYZER

VIN 50Ω

50Ω

VOUT

MEAS

REF

50Ω 50Ω

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. SIGNAL

DIRECTION THROUGH SWITCH IS REVERSED; WORST

VALUES ARE RECORDED.

OFF-ISOLATION =

20log

VOUT

VIN

ON-LOSS =

20log

VOUT

VIN

* ADD 50Ω TERMINATION FOR

OFF-ISOLATION

Figure 2. Off-Isolation, On-Loss, and Crosstalk

V+

V+

NO_

OR

NC_

MAX4741

VIN

MAX4742

IN_ MAX4743 COM_

GND

50Ω

RGEN

VGEN

VOUT

CL

1000pF

V+

AS

REQUIRED

V+

NO_

OR

NC_

MAX4741

MAX4742

IN_ MAX4743 COM_

GND

1MHz

CAPACITANCE

ANALYZER

V+

VIN

0

VOUT

MAX4741

MAX4742

∆VOUT

Figure 4. NO_, NC_, and COM_ Capacitance

∆VOUT IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER

ERROR Q WHEN THE CHANNEL TURNS OFF.

Q = ∆VOUT x CL

Figure 3. Charge Injection

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