DG201BAK datasheet(8/15 Pages) VISHAY

8 / 15 page

www.vishay.com

Document Number: 70037

S11-0800-Rev. J, 25-Apr-11

Vishay Siliconix

DG201B, DG202B

This document is subject to change without notice.

THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000

APPLICATIONS

Figure 6. Sample-and-Hold

LM101A

+ 15 V

- 15 V

30 pF

+ 15 V

- 15 V

V+

V-

DG201B

50 pF

1000 pF

J202

J500

J507

+ 15 V

2N4400

- 15 V

VIN

VOUT

1 k

200

5 M

5.1 M

Aquisition Time

= 25 µs

Aperature Time

= 1 µs

Sample to Hold Offset

= 5 mV

Droop Rate

= 5 mV/s

Logic Input

Low = Sample

High = Hold

Figure 7. Active Low Pass Filter with Digitally Selected Break Frequency

TTL

Control

150 pF

1500 pF

+ 15 V

DG201B

GND

30 pF

LM101A

+ 15 V

- 15 V

100

10K

100K

- 40

160

120

fC4

Select

fC3

Select

fC2

Select

fC1

Select

R1 = 10 kΩ

R2 = 10 kΩ

R3 = 1 MΩ

VOUT

V-

AL (Voltage Gain Below Break Frequency) =

= 100 (40 dB)

fC (Break Frequency) =

πR3CX

πR1CX

fL (Unity Gain Frequency) =

Max. Attenuation =

RDS(on)

10 k

≈ - 47 dB

0.015 µF

0.15 µF

- 15 V

f - Frequency (Hz)

fL1

fL2

fL3

fL4

fC1

fC2

fC3

fC4

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