DG506AAK 데이터 시트보기 (PDF) - Vishay Semiconductors

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DG506AAK

Single 16-Ch/Differential 8-Ch CMOS Analog Multiplexers

Vishay Semiconductors 

DG506A_MIL/507A_MIL

Vishay Siliconix

APPLICATION HINTSa

V+

Positive Supply

Voltage

(V)

V–

Negative Supply

Voltage

(V)

VIN

Logic Input Voltage

VINH(min)/VINL(max)

(V)

VS or VD

Analog Voltage

Range

(V)

15b

–15

12

–12

10

–10

8c

–8

2.4/0.8

2.4/0.8

2.2/0.6

2.0/0.5

–15 to 15

–12 to 12

–10 to 10

–8 to 8

Notes:

a. Application Hints are for DESIGN AID ONLY, not guaranteed and not subject to production testing.

b. Electrical Parameter Chart based on V+ = 15 V, V– = –15 V.

c. Operation below "8 V is not recommended due to shift in VINL(MAX).

Overvoltage Protection

A very convenient form of overvoltage protection consists of

adding two small signal diodes (1N4148, 1N914 type) in series

with the supply pins (see Figure 5). This arrangement

effectively blocks the flow of reverse currents. It also floats the

supply pin above or below the normal V+ or V– value. In this

case the overvoltage signal actually becomes the power

supply of the IC. From the point of view of the chip, nothing has

changed, as long as the difference between VS and the V– rail

doesn’t exceed +44 V. The addition of these diodes will reduce

the analog signal range to 1 V below V+ and 1 V above V–, but

it preserves the low channel resistance and low leakage

characteristics.

V+ v Vg vV–

SX

Vg

+V

1N4148

+V

Internal

Junction

Internal

Junction

DG506A_MIL

DG507A_MIL

–V

1N4148

–V

FIGURE 5. Overvoltage Protection Using Blocking Diodes

Channel 1

Channel 2

Channel 16

D

DG506A_MIL

#1

EN

A0 A1 A2 A3

Channel 17

Channel 18

Channel 32

D

DG506A_MIL

#2

EN

A0 A1 A2 A3

A

S/H

DG419

Controller

www.vishay.com S FaxBack 408-970-5600

5-8

FIGURE 6. A 32-Channel Data Acquisition System

A/D

Data

Bus

Document Number: 70066

S-00405—Rev. D, 21-Feb-00

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