MAX4994 Просмотр технического описания (PDF) - Maxim Integrated

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MAX4994

Low RON, Dual-SPDT/Single-DPDT Analog Switches with Slow Turn-On Time

Maxim Integrated 

Low RON, Dual-SPDT/Single-DPDT Analog

Switches with Slow Turn-On Time

Test Circuits/Timing Diagrams

MAX4991/MAX4992/

MAX4993/MAX4994

VIN_

NO_

OR NC_

CB_

LOGIC

INPUT

COM_

RL

VOUT

CL

CL INCLUDES FIXTURE AND STRAY CAPACITANCE.

( ) VOUT = VIN_

RL

RL + RON

Figure 1. Switching Time

LOGIC VIH

INPUT VIL

50%

tR < 5ns

tF < 5ns

SWITCH 0V

OUTPUT

tOFF

VOUT 0.9 x V0UT

tON

0.1 x VOUT

IN DEPENDS ON SWITCH CONFIGURATION;

INPUT POLARITY DETERMINED BY SENSE OF SWITCH.

VCC

0V OR VCC CB_

VIN

NO_

MAX4991/MAX4992/

NC1 MAX4993/MAX4994

VOUT

50Ω

COM_

NETWORK

ANALYZER

50Ω

50Ω

MEAS

50Ω

REF

50Ω

OFF-ISOLATION

=

20log

VOUT

VIN

ON-LOSS = 20log

VOUT

VIN

CROSSTALK =

20log

VOUT

VIN

MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT IC TERMINALS.

OFF-ISOLATION IS MEASURED BETWEEN COM_ AND "OFF" NO_ OR NC_ TERMINAL ON EACH SWITCH.

ON-LOSS IS MEASURED BETWEEN COM_ AND "ON" NO_ OR NC_ TERMINAL ON EACH SWITCH.

CROSSTALK IS MEASURED FROM ONE CHANNEL TO ALL OTHER CHANNELS.

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

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

MAX4991/MAX4992/

MAX4993/MAX4994

CAPACITANCE

METER

f = 1MHz

COM_

NC_ OR

NO_

CB

VIL OR VIH

Figure 3. Channel Off-/On-Capacitance

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