PDC500002 Crystals, Oscillators, Resonators

An oscillator is a circuit that produces a continuous output signal with a certain waveform, usually an alternating electrical signal. PDC500002 is an example of such a device. It is an integrated current-controlled oscillator (iCCO) designed for wireless applications, including WiFi, GSM, Bluetooth, Zigbee, etc. The iCCO works by providing precise frequency control, achieving fast start up time and accurate frequency accuracy across all operating temperatures. In addition, the device incorporates an on-chip loop filter, necessary for generating the desired frequency. PDC500002 provides a high-speed output signal of up to 50MHz and a high-frequency synthesis accuracy of up to 1%.

The iCCO works using an oscillation circuit. This circuit contains the oscillator and the associated loop filter. The loop filter consists of a resistor and a capacitor in series, which are connected to the programmable oscillator. The capacitance of the capacitor and the resistance of the resistor determine the resonance frequency of the loop. The output of the oscillator is then connected to an open-loop amplifier, which is used to drive an antenna. The antenna radiates the output signal.

The output of the oscillator in PDC500002 is generated using a pulse-width modulated (PWM) waveform. The waveform is a rectangular wave with a pulse width proportional to the resistance of the resistor in the loop filter. The PWM waveform is then fed through a lowpass filter to remove the high frequency components, resulting in a sine wave output. The frequency of the output signal is determined by the resonance of the loop filter. The frequency of the output signal can be adjusted by changing the resistance of the resistor in the loop filter. In addition, the output amplitude of the PWM waveform can be adjusted depending on the input current of the chip.

In addition to providing precise frequency control and fast start-up time, PDC500002 incorporates other features to improve the overall performance of the oscillator. Many of these features are related to the iCCO control logic. This includes the ability to regulate the frequency accuracy by adjusting the charge pump current, as well as the capability to reduce the spikes and noise associated with charging and discharging of the loop filter. In addition, the chip features power management functions, including low power mode, peak current limit, and supply current trimming.

PDC500002 is a high performance iCCO designed for wireless applications. This integrated current-controlled oscillator offers precise frequency control, fast startup time, and accurate frequency accuracy across a wide temperature range. In addition, the device has numerous other features that improve the overall performance of the oscillator.