Low-Voltage, CMOS Analog Multiplexers/Switches

with Enable Inputs and Address Latching

______________________________________________________________________________________

13

Figure 4. Charge Injection

_________________________________Test Circuits/Timing Diagrams (continued)

V-

COM

V-

V+

GND

ADDC

ADDB

ADDA

EN1

50

Ω

V+

CHANNEL

SELECT

V+

MAX4530

MAX4531

MAX4532

NO_

EN2

V- = 0V FOR SINGLE-SUPPLY OPERATION.

REPEAT TEST FOR EACH SECTION.

V+

0V

ERROR Q WHEN THE CHANNEL TURNS OFF.

Q =

LE

Figure 5. Off Isolation, On Loss, and Crosstalk

V-

COM_

ADDC

ADDB

ADDA

EN2

V+

V+

CHANNEL

SELECT

V+

MAX4530

MAX4531

MAX4532

EN1

NO_

V-

GND

MEASUREMENTS ARE STANDARDIZED AGAINST SHORT AT SOCKET TERMINALS.

OFF ISOLATION IS MEASURED BETWEEN COM_ AND OFF NO_ TERMINAL ON EACH SWITCH.

ON LOSS IS MEASURED BETWEEN COM_ AND ON TERMINAL ON EACH SWITCH.

CROSSTALK (MAX4531/MAX4532 IS MEASURED FROM ONE CHANNEL (A, B, C) TO ALL OTHER CHANNELS.

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

MEASUREMENT

REF

50

Ω

50

Ω

50

Ω

50

Ω

10nF

NETWORK

ANALYZER

OFF ISOLATION = 20log

ON LOSS = 20log

CROSSTALK = 20log

LE

V-

COM

V-

GND

ADDC

ADDB

ADDA

EN2

V+

V+

CHANNEL

SELECT

V+

MAX4530

MAX4531

MAX4532

EN1

NO_

NO_

1MHz

CAPACITANCE

ANALYZER

LE

Figure 6. NO/COM Capacitance