MB15C700PV View Datasheet(PDF) - Fujitsu

Part Name

Description

Manufacturer

MB15C700PV

Built-in IF Band Voltage Controlled Oscillator Mask ROM Frequency Synthesizer

Fujitsu 

MB15C700 series

s BLOCK DIAGRAM

PLLVDD 10

OSCin 8

PLLPS 16

PLLfin 15

PLLGND 14

Buffer Amp.

Power saving

control circuit

Reference counter (R)

Phase

comparator

PLL-Block

Buffer Amp.

Swallow counter (A) Main counter (N)

Prescaler (P)

Control

circuit

Lock

detector

Output

selector

Charge pump

VCO-Block

6 LD

9 fout

13 PLLDo

3 VCOCNT

19 VCOTNKI

20 VCOTNKO

18 VCOout

5

14 4

VCOVDD VCOPS

VCOGND

s FUNCTIONAL DESCRIPTIONS

Divide ratios of the internal counters can be set optionally according to customer requirements.

The divide ratio can be calculated using the following equation.

fvco = [ (P × N + A) ] × fosc / R

Note: N > A, P > A

fvco : Output frequency of Voltage Controlled Oscillator (VCOout up to 400 MHz)

fosc : Reference oscillation frequency (up to 26 MHz)

N

: Divide ratio of the main counter (5 to 4095)

A

: Divide ratio of the swallow counter (0 to 31)

P

: Preset divide ratio of dual modulus prescaler (8/9, 16/17, 32/33)

R

: Divide ratio of the reference counter (5 to 4095)

4

Share Link: