The **CRO2148A-LF** is a high-performance **Voltage Controlled Oscillator (VCO)** manufactured by Skyworks Solutions (formerly Z-Communications). It is primarily designed for use in telecommunications and signal processing where high spectral purity is required. --- ## 1. Core Technical Specifications The following table summarizes the primary electrical characteristics of the CRO2148A-LF: | Parameter | Specification | Unit | | :--- | :--- | :--- | | **Frequency Range** | 2148 to 2148 | MHz | | **Tuning Voltage** | 0.5 to 4.5 | Vdc | | **Supply Voltage (Vcc)** | 5 | Vdc | | **Output Power** | 0 ± 3 | dBm | | **Phase Noise (@ 10 kHz)** | -110 (typical) | dBc/Hz | | **Harmonic Suppression** | -15 (typical) | dBc | | **Operating Temperature** | -40 to +85 | °C | | **Package Style** | MINI-16-LOW | - | --- ## 2. Functional Description As a **VCO**, this component generates an oscillating radio frequency (RF) signal. The frequency of the output is controlled by an input DC voltage (Tuning Voltage). ### Key Features: * **Ultra-Low Phase Noise:** This is the standout feature of the CRO series. It ensures minimal "jitter" in the signal, which is critical for high-speed data transmission and sensitive radio receivers. * **RoHS Compliant:** The "-LF" suffix stands for **Lead-Free**, meaning the part complies with environmental regulations regarding hazardous substances. * **Coaxial Resonator Oscillator (CRO) Technology:** Unlike standard oscillators, it uses a ceramic coaxial resonator to achieve much higher Q-factors, leading to superior frequency stability. --- ## 3. Pin Configuration & Application The device is typically housed in a surface-mount package (SMT). Its integration usually follows this logic: ### Typical Application Circuit ```text [ Tuning Voltage (0.5-4.5V) ] ----> [ Pin 2: Tuning ] [ Supply Voltage (+5V) ] ---------> [ Pin 14: Vcc ] [ RF Output (2148 MHz) ] <--------- [ Pin 8: RF Out ] [ Ground ] -----------------------> [ Case/GND Pins ] ``` ### Common Applications: 1. **Fixed Wireless Access:** Used in point-to-point microwave links. 2. **Base Stations:** Providing the local oscillator (LO) signal for cellular infrastructure. 3. **Test Equipment:** Integrated into signal generators where frequency precision is mandatory. ---