FX002 Ver la hoja de datos (PDF) - CML Microsystems Plc

Número de pieza

componentes Descripción

Fabricante

FX002

Signal to Noise Enhancer

CML Microsystems Plc 

Application Information

External Components

SIGNAL

INPUT

C1

VDD

SIGNAL IN

1

x2

SIGNAL BIAS

3

R1

4

XTAL/CLOCK OUTPUT

4

5

XTAL

XTAL

6

6

XTAL/CLOCK

C3

7

X1

R2

C4

x8

C2

VSS

7

XTAL/CLOCK

Fig.2 Recommended External Components

VDD

16

15

14

13

FX002J

12

11

10

9

VSS

C5

VDD

VSS

x

x

OUTPUT (f = 4 x SIGNAL IN)

x

CLOCK

6

OUTPUT

x

VSS

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

Component

Value for VDD = 5.0V

R1

2.2MΩ

R2

1.0MΩ

C1

0.01µF

C2

47.0pF -see below

C3

47.0pF -see below

C4

5 - 65pF -see below

C

1.0µF

5

X1

560kHz resonator

X range

1

20kHz to 2.5MHz

Table 3 Recommended External Components

Xtal/Clock Components

C4 is suggested for frequency setting when using a

resonator; when a Xtal is used C4 is omitted. Values

of capacitors C and C should be reduced for higher

2

3

Xtal frequencies and/or lower supply voltages (VDD).

14000

12000

10000

8000

6000

Minimum Input Frequency =

Xtal/Clock Frequency (Hz)

1200

Maximum Input Frequency =

Xtal/Clock Frequency (Hz)

190

Maximum Input Frequency (Hz)

For VDD = 5.0V

Maximum Clock Limit

at VDD = 3.0V

Maximum Clock Limit

at VDD = 2.5V

Input Signal Bandwidth (Hz)

4000

2000

0

0

500

1000

1500

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

3

Minimum Input Frequency (Hz)

2000

2500

Xtal/Clock Frequency (kHz)

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