MX9706858A - Sintetizador de frecuencia de bajo voltaje. - Google Patents
Sintetizador de frecuencia de bajo voltaje.Info
- Publication number
- MX9706858A MX9706858A MX9706858A MX9706858A MX9706858A MX 9706858 A MX9706858 A MX 9706858A MX 9706858 A MX9706858 A MX 9706858A MX 9706858 A MX9706858 A MX 9706858A MX 9706858 A MX9706858 A MX 9706858A
- Authority
- MX
- Mexico
- Prior art keywords
- voltage
- charge pump
- control voltage
- pulses
- coupled
- Prior art date
Links
- 238000005070 sampling Methods 0.000 abstract 2
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/0802—Details of the phase-locked loop the loop being adapted for reducing power consumption
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
- H03L7/089—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal the phase or frequency detector generating up-down pulses
- H03L7/0891—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal the phase or frequency detector generating up-down pulses the up-down pulses controlling source and sink current generators, e.g. a charge pump
- H03L7/0895—Details of the current generators
Landscapes
- Dc-Dc Converters (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
La presente invencion se refiere a un generador de voltaje de control mejorado para utilizar con un oscilador controlado de voltaje (VCO), para permitir la operacion VCO a bajos voltajes de suministro inferiores a 3 volts. El generador de control incluye un comparador de fase, una bomba de carga, un multiplicador de voltaje conmutado, y un filtro de voltaje de control. El voltaje de salida del detector de fase se acopla a una terminal de muestreado de la bomba de carga, una terminal de suministro de energía de la bomba de carga se acopla a una terminal de salida de un multiplicador de voltaje conmutado, y una terminal de alimentacion de voltaje del multiplicador de voltaje conmutado se acopla a una primer señal de referencia. La bomba de carga, energizada desde la terminal de suministro de energía, genera una forma de onda que incluye una pluralidad de pulsos. Cada uno de la pluralidad de pulsos tiene una duracion de tiempo substancialmente proporcional la voltaje presente en la terminal de muestreo. Estos pulsos pueden emplearse como un voltaje de control VCO o en forma alterna un filtro de voltaje de control acoplado a la bomba de carga, puede emplearse para transformar los pulsos en un voltaje de control VCO que tiene las características deseadas.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08713051 | 1996-09-12 | ||
| US08/713,051 US5838180A (en) | 1996-09-12 | 1996-09-12 | Low-voltage frequency synthesizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| MX9706858A true MX9706858A (es) | 1998-07-31 |
| MXPA97006858A MXPA97006858A (es) | 1998-11-09 |
Family
ID=
Also Published As
| Publication number | Publication date |
|---|---|
| EP0829968A3 (en) | 1999-04-21 |
| US5838180A (en) | 1998-11-17 |
| EP0829968A2 (en) | 1998-03-18 |
| BR9704663A (pt) | 1999-03-16 |
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