MC145170D2 Ver la hoja de datos (PDF) - Freescale Semiconductor

Número de pieza

componentes Descripción

Fabricante

MC145170D2

PLL Frequency Synthesizer with Serial Interface

Freescale Semiconductor 

Electrical Characteristics

Sine Wave

Generator

0.01 µF

50 Ω

5.0 MΩ

Vin

OSCin

fR

MC145170-2

OSCout

Test Point

Sine Wave

Generator

VSS VDD

V+

V+

50 Ω

1.0 MΩ

0.01 µF

OSCin

fR Test Point

Vin

1.0 MΩ MC145170-2

OSCout

No Connect

VSS VDD

V+

Figure 9. Test Circuit, OSC Circuitry

Externally Driven [Note]

Figure 10. Circuit to Eliminate Self-Oscillation,

OSC Circuitry Externally Driven [Note]

NOTE

Use the circuit of Figure 10 to eliminate self-oscillation of the OSCin pin

when the MC145170-2 has power applied with no external signal applied

at Vin. (Self-oscillation is not harmful to the MC145170-2 and does not

damage the IC.)

OSCin

C1

MC145170-2

REFout

Test Point

OSCout

C2

VSS VDD

V+

REFout

1/f REFout

50%

Figure 11. Test Circuit, OSC Circuit with Crystal

Figure 12. Test Circuit

tw

90%

Output 50% 10%

tTHL

tTLH

Figure 13. Switching Waveform

Device

Under

Test

Test Point

Output

CL*

*Includes all probe and fixture capacitance.

Figure 14. Test Load Circuit

MC145170-2 Technical Data, Rev. 5

8

Freescale Semiconductor

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