Document Number: 70053

S-71241–Rev. I, 25-Jun-07

www.vishay.com

7

Vishay Siliconix

DG441/442

TEST CIRCUITS

Figure 2. Switching Time

0 V

Logic

Input

Switch

Input

Switch

Output

3 V

50 %

0 V

Note:

Logic input waveform is inverted for DG442.

50 %

80 %

80 %

10 V

V

-

V+

IN

S

D

3 V

1 k

Ω

35 pF

- 15 V

GND

+ 15 V

Figure 3. Charge Injection

OFF

ON

OFF

OFF

ON

OFF

O

Q =

(DG441)

(DG442)

1 nF

IN

D

V-

V+

S

3 V

- 15 V

GND

+ 15 V

Figure 4. Crosstalk

C = 1 mF tantalum in parallel with 0.01 mF ceramic

50

Ω

+ 15 V

- 15 V

GND

V+

V-

NC

C

C

0 V, 2.4 V

0 V, 2.4 V

C = RF bypass

Figure 5. Off Isolation

S

IN

D

0 V, 2.4 V

Off Isolation = 20 log

V+

- 15 V

GND

V-

C

C

+ 15 V

Figure 6. Source/Drain Capacitances

S

D

IN

+ 15 V

- 15 V

GND

V+

V-

C

C

0 V, 2.4 V

Meter

HP4192A

Impedance

Analyzer

or Equivalent