3

Application Information

External Components

0

2000

4000

6000

8000

10000

12000

14000

Maximum Input Frequency (Hz)

Minimum Input Frequency (Hz)

Input Signal Bandwidth (Hz)

Maximum Clock Limit

Maximum Clock Limit

Xtal/Clock Frequency (kHz)

0

500

1000

1500

2000

2500

Minimum Input Frequency =

Xtal/Clock Frequency (Hz)

1200

Maximum Input Frequency =

Xtal/Clock Frequency (Hz)

190

Fig.3 Examples of Input Signal Ranges vs Xtal/Clock Frequency

Component

Value for V

R

1

2.2M

Ω

R

2

1.0M

Ω

C

1

0.01µF

C

2

47.0pF -see below

C

3

47.0pF -see below

C

4

5 - 65pF -see below

C

5

1.0µF

X

1

560kHz resonator

X

20kHz to 2.5MHz

Table 3 Recommended External Components

Xtal/Clock

Input Freq. (Hz)

Freq. (kHz)

Min

Max

BW (Hz)

20

17

105

88

100

88

526

443

200

166

1052

886

300

250

1579

1329

400

333

2105

1772

500

416

2632

2216

560

467

2947

2480

600

500

3158

2658

700

583

3684

3101

800

667

4210

3543

900

750

4737

3987

1000

833

5263

4430

2000

1667

10526

8859

2500

2083

13157

11074

Table 2 Input Signal Ranges vs Xtal/Clock Frequency

Xtal/Clock Components

C

resonator; when a Xtal is used C

Values

of capacitors C

Xtal frequencies and/or lower supply voltages (V

V

DD

V

SS

R

1

V

SS

V

SS

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

SIGNAL IN

XTAL/CLOCK

SIGNAL

INPUT

OUTPUT

(f = 4 x SIGNAL IN)

x

x

x

x

x

x

SIGNAL BIAS

CLOCK

OUTPUT

6

FX002J

XTAL

XTAL/CLOCK

6

7

XTAL

XTAL/CLOCK

OUTPUT

4

Fig.2 Recommended External Components