MC145220DT Просмотр технического описания (PDF) - Freescale Semiconductor

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производитель

MC145220DT

Dual 1.1 GHz PLL Frequency Synthsizer

Freescale Semiconductor 

Freescale Semiconductor, Inc.

SINE WAVE

GENERATOR

50 Ω

50 Ω PAD

DC

BLOCK

OUTPUT A

fin

DEVICE

UNDER

TEST

fin

GND V+ GNDi V+i

TEST

POINT

(fv)

NOTE: Alternately, the 50 Ω pad may be a T network.

Figure 7. Test Circuit

SINE WAVE

GENERATOR

50 Ω

50 Ω*

0.01 µF

Vin

REFin

OUTPUT A

DEVICE

UNDER

TEST

REFout

TEST

POINT

(fR)

TEST

POINT

GND V+ GNDi V+i

* Characteristic Impedance

Figure 8. Test Circuit — Reference Mode

C1

C2

REFin

OUTPUT A

REFout

DEVICE

UNDER

TEST

GND V+ GNDi V+i

TEST

POINT

(fR)

REFout

1 / f out

50%

Figure 9. Test Circuit — Crystal Mode

OUTPUT

tw

50%

Figure 11. Switching Waveform

Figure 10. Switching Waveform

DEVICE

UNDER

TEST

TEST POINT

CL*

* Includes all probe and fixture capacitance.

Figure 12. Test Circuit

MOTOROLA WIRELESS SEMICONDUCTOR

SOLUTIONS DEVICE DATA For More Information On This Product,

Go to: www.freescale.com

MC145220

7

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