PDF HEF4750V Data sheet ( Hoja de datos )

Número de pieza	HEF4750V
Descripción	Frequency synthesizer
Fabricantes	NXP Semiconductors
Logotipo
Hay una vista previa y un enlace de descarga de HEF4750V (archivo pdf) en la parte inferior de esta página. Total 17 Páginas
No Preview Available ! INTEGRATED CIRCUITS 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 HEF4750V LSI Frequency synthesizer Product speciﬁcation File under Integrated Circuits, IC04 January 1995 1 page Philips Semiconductors Frequency synthesizer Product speciﬁcation HEF4750V LSI FUNCTIONAL DESCRIPTION Phase comparator 1 Phase comparator 1 (PC1) is built around a SAMPLE and HOLD circuit. A negative-going transition at the V-input causes the hold capacitor (CA) to be discharged and after a specified delay, caused by the Phase Modulator by means of an internal V’ pulse, it produces a positive-going ramp. A negative-going transition at the R-input terminates the ramp. Capacitor CA holds the voltage that the ramp has attained. Via an internal sampling switch this voltage is transferred to CC and in turn buffered and made available at output PC1. If the ramp terminates before an R-input is present, an internal end of ramp (EOR) signal is produced. These actions are illustrated in Fig.3. Fig.3 Waveforms associated with PC1. The resultant phase characteristic is shown in Fig.4. January 1995 5 5 Page Philips Semiconductors Frequency synthesizer Product speciﬁcation HEF4750V LSI AC CHARACTERISTICS General note The dynamic speciﬁcations are given for the circuit built-up with external components as given in Fig.8, under the following conditions; for deﬁnitions see note 1; for deﬁnitions of times see Fig.19; VDD = 10 V ± 5%; Tamb = 25 °C; input transition times ≤ 20 ns; RA = 68 kΩ ± 30% (see also note 4); CA = 270 pF; CB = 150 pF; CC = 1 nF; CD = 10 nF; unless otherwise speciﬁed. Slew rate TCA TCA TCB TCB Ramp linearity TCA TCB Start of TCA-ramp delay Delay of TCA-hold Delay of TCA-discharge Start of TCB-ramp delay TCB-ramp duration Required TCB min. ramp duration Pulse width V : LOW V : HIGH R : LOW R : HIGH STB : LOW STB : HIGH Fall time TCA TCB Prescaler input frequency Binary divider frequency Crystal oscillator frequency Average power supply current with speed-up 1 : 10 without speed-up SYMBOL MIN. TYP. MAX. UNIT CONDITIONS NOTES STCA STCA STCB STCB ITCA ITCB tCBCA tRCA tVCA tVCB trCB trCB trCB trCB tPWVL tPWVH tPWRL tPWRH tPWSL tPWSH tfCA tfCB fPR fDIV fOSC IP IP − 52 − V/µs RA = minimum 12 − 28 − V/µs RA = maximum 12 − 20 − V/µs RA = minimum 12 − 10 − V/µs RA = maximum 12 −2−% −2−% − 200 − ns − 40 − ns − 60 − ns − 60 − ns − 250 − ns − 350 − ns − 450 − ns VMOD = 4 V VMOD = 6 V VMOD = 8 V 13 13 − 150 − ns 14 − 20 − ns − 20 − ns − 20 − ns − 20 − ns − 20 − ns − 20 − ns − 50 − ns − 50 − ns − 30 − MHz all division ratios − 30 − MHz all division ratios − 10 − MHz locked state − 3,6 − mA 15 − 3,2 − mA 16 January 1995 11 11 Page

Páginas	Total 17 Páginas
PDF Descargar	[ Datasheet HEF4750V.PDF ]

Hoja de datos destacado

Número de pieza	Descripción	Fabricantes
HEF4750V	Frequency synthesizer	NXP Semiconductors

Número de pieza	Descripción	Fabricantes
SLA6805M	High Voltage 3 phase Motor Driver IC.	Sanken
SDC1742	12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters.	Analog Devices

DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares,
permitiéndote verlos en linea o descargarlos en PDF.

DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar