DG508B datasheet(11/18 Pages) VISHAY

Part #	DG508B

Description	Precision 8-Channel/Dual 4-Channel CMOS Analog Multiplexers

PDF	18 Pages

Scroll/Zoom	100%

Manufacturer	VISHAY [Vishay Siliconix]

Direct Link	http://www.vishay.com

Logo

11 / 18 page

Document Number: 64821

S10-2817-Rev. D, 20-Dec-10

www.vishay.com

Vishay Siliconix

DG508B, DG509B

TEST CIRCUITS

Figure 4. Break-Before-Make Interval

50 %

80 %

Logic

Input

Switch

Output

tOPEN

tr < 20 ns

tf < 20 ns

0 V

3 V

0 V

V+

GND

V-

+ 5 V

35 pF

- 15 V

+ 15 V

+ 2.4 V

Db, D

All S and Da

1 k



DG508B

DG509B

Figure 5. Charge Injection

V+

GND

V-

- 15 V

+ 15 V

1 nF

Channel

Select

3 V

0 V

OFF

Logic

Input

Switch

Output

VO

VO is the measured voltage due to charge transfer

error Q, when the channel turns off.

QINJ = CL x VO

OFF

Figure 6. Off Isolation



V+

GND

V-

- 15 V

+ 15 V

Rg = 50 

Off Isolation = 20 log

VOUT

VIN

Figure 7. Crosstalk



V+

GND

V-

- 15 V

+ 15 V

Rg = 50 

Crosstalk = 20 log

VOUT

VIN

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