74HCT9046A 데이터 시트보기 (PDF) - Philips Electronics

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74HCT9046A

PLL with bandgap controlled VCO

Philips Electronics 

Philips Semiconductors

PLL with bandgap controlled VCO

Product specification

74HCT9046A

SYMBOL

PARAMETER

MIN.

Tamb (°C)

+25

−40 to +85 −40 to +125 UNIT

TYP. MAX. MIN. MAX. MIN. MAX.

TEST CONDITION

VCC

(V)

WAVEFORMS

VCO section

∆f/T

frequency stability −

−

−

0.06 −

−

−

%/K 4.5 VVCOIN = 1⁄2VCC;

with temperature

recommended

change

range:

R1 = 10 kΩ;

R2 = 10 kΩ;

C1 = 1 nF;

Figs 20 to 22

∆fc

centre frequency −10 −

+10 −

−

−

−

%

5.0 VVCOIN = 3.9 V;

tolerance

R1 = 10 kΩ;

R2 = 10 kΩ;

C1 = 1 nF

fc

VCO centre

11.0 15.0 −

−

−

−

−

MHz 4.5 VVCOIN = 1⁄2VCC;

frequency

R1 = 4.3 kΩ;

(duty factor = 50%)

R2 = ∞;

C1 = 40 pF;

Figs 23 and 31

∆fVCO

VCO frequency −

0.4 −

−

−

−

−

% 4.5 R1 = 100 kΩ;

linearity

R2 = ∞;

C1 = 100 pF;

Figs 24 and 25

δVCO

duty factor at

VCOOUT

−

50 −

−

−

−

−

% 4.5

1999 Jan 11

19

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