Low-Voltage, 60

4:1 Analog Multiplexer in QFN

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9

Test Circuits/Timing Diagrams (continued)

0

V+

TRANSFER ERROR Q WHEN THE CHANNEL TURNS OFF.

REPEAT TEST FOR EACH SECTION.

Q =

V+

GND

V+

ADDB

CHANNEL

SELECT

ADDA

INH

NO_

COM

MAX4704

CL

1000pF

Figure 5. Charge Injection

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" NO TERMINAL ON EACH SWITCH.

CROSSTALK IS MEASURED FROM ONE CHANNEL (A, B) TO OTHER CHANNEL.

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

V+

GND

V+

VIN

VOUT

MEAS.

NETWORK

ANALYZER

50

Ω

50

Ω

50

Ω

OFF-ISOLATION = 20log

ON-LOSS = 20log

CROSSTALK = 20log

50

Ω

REF.

ADDB

ADDA

CHANNEL

SELECT

INH

NO_

COM

10nF

MAX4704

Figure 6. Off-Isolation, On-Loss, and Crosstalk

V+

GND

V+

ADDB

ADDA

CHANNEL

SELECT

1MHz

CAPACITANCE

ANALYZER

INH

NO_

NO_

COM

MAX4704

Figure 7. NO_/COM Capacitance

Chip Information

TRANSISTOR COUNT: 256

PROCESS: CMOS