ADG758 datasheet(11/12 Pages) AD

11 / 12 page

ADG758/ADG759

–11–

REV. A

OUTPUT

50%

ENABLE

DRIVE (VIN)

50%

tON (EN)

0.9V0

tOFF (EN)

*SIMILAR CONNECTION FOR ADG759

GND

ADG758*

S2 THRU S8

VIN

35pF

VDD

VSS

VDD

VSS

300

VOUT

Test Circuit 7. Enable Delay, tON (EN), tOFF (EN)

LOGIC INPUT

(VIN)

VOUT

QINJ = CL

VOUT

VDD

GND

ADG758*

1nF

VDD

VIN

VSS

*SIMILAR CONNECTION FOR ADG759

Test Circuit 8. Charge Injection

VOUT

NETWORK

ANALYZER

GND

OFF ISOLATION = 20 LOG

VOUT

0.1 F

VDD

2.4V

0.1 F

VSS

VDD

VSS

Test Circuit 9. OFF Isolation

*SIMILAR CONNECTION FOR ADG759

CHANNEL-TO-CHANNEL

CROSSTALK = 20 LOG

VOUT

GND

ADG758*

2.4V

NETWORK

ANALYZER

NETWORK

ANALYZER

VOUT

VDD

0.1 F

VSS

0.1 F

VDD

VSS

Test Circuit 10. Channel-to-Channel Crosstalk

VOUT

NETWORK

ANALYZER

GND

VOUT WITH SWITCH

VOUT WITHOUT SWITCH

INSERTION LOSS = 20 LOG

0.1 F

VDD

2.4V

0.1 F

VSS

VDD

VSS

Test Circuit 11. Bandwidth

Power-Supply Sequencing

When using CMOS devices, care must be taken to ensure correct

power-supply sequencing. Incorrect power-supply sequencing

can result in the device being subjected to stresses beyond the

maximum ratings listed in the data sheet. Digital and analog

inputs should always be applied after power supplies and ground.

For single-supply operation, VSS should be tied to GND as close

to the device as possible.

ADG758 Datasheet(PDF) 11 Page - Analog Devices

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