The **ADE-R35LH+** is a high-performance, surface-mount frequency mixer manufactured by Mini-Circuits. It is specifically designed for high-reliability applications requiring wideband frequency coverage. --- ### 1. Key Technical Specifications The device is a passive, double-balanced mixer that utilizes internal Schottky diodes and transmission line transformers. | Parameter | Specification | | :--- | :--- | | **RF Frequency Range** | 10 to 3000 MHz | | **LO Frequency Range** | 10 to 3000 MHz | | **IF Frequency Range** | DC to 1000 MHz | | **LO Power Level** | Class 10 (+10 dBm) | | **Conversion Loss** | 6.4 dB (Typical) | | **Isolation (LO-RF)** | 35 dB (Typical) | | **Package Type** | CD542 (Surface Mount) | --- ### 2. Core Electronic Components & Architecture The ADE-R35LH+ operates based on a **Double-Balanced Mixer (DBM)** architecture, which includes the following internal electronic elements: * **Schottky Diode Quad:** The heart of the mixer is a ring of four matched Schottky diodes. These act as high-speed switches triggered by the Local Oscillator (LO) signal. * **Balun Transformers:** It contains two wideband ferrite-core transformers. * One transformer converts the unbalanced RF input to a balanced signal. * The second transformer handles the LO signal and extracts the IF (Intermediate Frequency) output. * **Ceramic Substrate:** The internal components are mounted on a rugged ceramic base, providing excellent thermal stability and high-frequency performance. --- ### 3. Pin Configuration The device uses a standard 6-pin layout common to the Mini-Circuits ADE series: | Pin Number | Function | Description | | :--- | :--- | :--- | | **1** | LO | Local Oscillator Input | | **2** | GND | Ground | | **3** | RF | Radio Frequency Input | | **4** | IF | Intermediate Frequency Output | | **5** | GND | Ground | | **6** | GND | Ground | --- ### 4. Circuit Implementation Example When integrating this part into a PCB design, it is crucial to maintain a 50-ohm characteristic impedance for all signal traces. ```markdown Typical Application Layout: [LO Source (+10dBm)] --> Pin 1 (ADE-R35LH+) [Antenna/LNA] --> Pin 3 (ADE-R35LH+) [Filter/ADC] <-- Pin 4 (ADE-R35LH+) [System Ground] --> Pins 2, 5, 6 ``` --- ### 5. Common Applications * **Cellular Infrastructure:** Frequency up/down conversion in base stations. * **Defense Systems:** Wideband tactical communications and radar receivers. * **Test Equipment:** Signal generators and spectrum analyzers. * **VHF/UHF Receivers:** General-purpose frequency mixing in the 10-3000 MHz band.