3

Application Inf

Application Inf

Application Inf

Application Inf

Application Information

ormation

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External Components

External Components

External Components

External Components

External Components

Fig.2 Recommended External Components - Differential Input Mode

Tip (a)

Ring (b)

INPUT AMP

INPUT AMP

Fig.3 Example Input Configurations

Differential Input

Common Mode Input

V

DD

V

DD

V

SS

V

SS

V

BIAS

V

SS

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

FX631DW

For use with a Clock Pulse input

- Remove Xtal (X

- Connect Pin 1 to V

DD

- Remove link (Pins 3/4)

- Input clock pulses to CLOCK IN

TONE FOLLOWER OUTPUT

PACKET MODE OUTPUT

SYSTEM

CLOCK IN

CLOCK IN

XTAL/CLOCK

SIGNAL IN (+)

SIGNAL IN (-)

AMP OUT

XTAL/CLOCK

CLOCK OUT

XTAL

Component

Component

Component

Component

Component

Value

Value

Value

Value

Value

R

1

R

FEEDBACK

R

2

R

IN (-)

R

3

R

IN (+)

R

4

R

BIAS

C

1

1.0µF ±20%

C

2

1.0µF ±20%

C

3

C

IN (-)

C

4

C

IN (+)

X

1

3.579545MHz

External Components

External Components

External Components

External Components

External Components

1. The values of the Input Amp gain components

illustrated are calculated using the Input Gain

Calculation Graphs (Figures 4 and 5).

Whilst calculating input gain components, for

correct operation, it is recommended that the values

of resistors R

equal to, 33k

Ω.

2. Refer to following pages for advice on Microcircuit

Protection from high and spurious line voltages.