hef4046b NXP Semiconductors, hef4046b Datasheet
hef4046b
Available stocks
Related parts for hef4046b
hef4046b Summary of contents
Page 1
... DATA SHEET For a complete data sheet, please also download: The IC04 LOCMOS HE4000B Logic Family Specifications HEF, HEC The IC04 LOCMOS HE4000B Logic Package Outlines/Information HEF, HEC HEF4046B MSI Phase-locked loop Product specification File under Integrated Circuits, IC04 INTEGRATED CIRCUITS ...
Page 2
... Philips Semiconductors Phase-locked loop DESCRIPTION The HEF4046B is a phase-locked loop circuit that consists of a linear voltage controlled oscillator (VCO) and two different phase comparators with a common signal input amplifier and a common comparator input regulator (zener) diode is provided for supply voltage regulation if necessary ...
Page 3
... Another typical behaviour is, that the phase angle between the signal and comparator input varies between 0 and 180 and the centre frequency. Figure 3 shows the typical phase-to-output response characteristic. 3 Product specification HEF4046B ). The frequency capture range ( defined as the frequency range of input L MSI 1 ...
Page 4
... Signal-to-comparator inputs phase difference for comparator 1. Figure 4 shows the typical waveforms for a PLL employing phase comparator 1 in locked condition of f Fig.4 Typical waveforms for phase-locked loop employing phase comparator 1 in locked condition of f January 1995 . o 4 Product specification HEF4046B MSI . o ...
Page 5
... With no signal present at the signal input, the VCO is adjusted to its lowest frequency for phase comparator 2 . Figure 5 shows typical waveforms for a PLL employing this type of phase comparator in locked condition. 5 Product specification HEF4046B MSI ...
Page 6
... ON. States and 8 represent the condition when the output is in its high impedance OFF state; i.e. both p and n-type drivers are OFF, and the PCP The condition at output PCP Fig.6 State diagram for comparator 2. 6 Product specification HEF4046B MSI output is HIGH. OUT for all other states is LOW. OUT ...
Page 7
... Product specification HEF4046B amb TYP. MAX. TYP. 20 300 750 MAX self-bias k operating point k mV peak-to-peak values ...
Page 8
... V 7 Product specification HEF4046B MAX fixed oscillator only 15 V phase-locked loop operation kHz VCO IN see also Figs 10 and 11 W MHz VCO MHz MHz ...
Page 9
... Fig.8 to determine R2 and C1; calculate min 9 USING PHASE COMPARATOR 2 VCO in PLL system adjusts to min. frequency (f ) min always 0 in lock (positive-going edges) no low f max min use f with Fig.8 to determine R2 and C1; calculate L min Product specification HEF4046B MSI ...
Page 10
... Philips Semiconductors Phase-locked loop Fig.7 Typical centre frequency as a function of capacitor C1; T January 1995 VCO at amb IN 10 Product specification HEF4046B MSI V ; INH ...
Page 11
... Philips Semiconductors Phase-locked loop Fig.8 Typical frequency offset as a function of capacitor C1; T January 1995 = 25 C; VCO at V amb IN 11 Product specification HEF4046B MSI ; INH SS; ...
Page 12
... Philips Semiconductors Phase-locked loop Fig.9 Typical ratio of R2/ function of the ratio f January 1995 /f . max min 12 Product specification HEF4046B MSI ...
Page 13
... Philips Semiconductors Phase-locked loop Fig.10 Power dissipation as a function of R1 VCO Fig.11 Power dissipation as a function of R2 VCO pF. L January 1995 ; pF V); 13 Product specification HEF4046B MSI ...
Page 14
... Figure 13 and the above formula also apply to source follower linearity: substitute V for f. SF OUT January 1995 Fig.13 Definition of linearity (see AC characteristics). 14 Product specification HEF4046B MSI ...
Page 15
... Philips Semiconductors Phase-locked loop Fig.14 VCO frequency linearity as a function of R1 Fig.16 VCO frequency linearity as a function of R1 January 1995 Fig.15 VCO frequency linearity as a function of R1 Product specification HEF4046B MSI ...