The **M7S22FBJ-R** is a high-performance, programmable crystal oscillator developed by **Epson**. It belongs to the **SG-8018** or **SG-8101** series (depending on specific generation parameters), which are designed for versatility in timing applications. --- ## 1. Technical Specifications The part number encodes specific characteristics regarding its frequency, stability, and operating environment. | Parameter | Specification Details | | :--- | :--- | | **Component Type** | Programmable Crystal Oscillator (SPXO) | | **Package Size** | 7.0 x 5.0 mm (4-pin SMD) | | **Output Type** | CMOS | | **Supply Voltage** | 1.62V to 3.63V (Wide Range) | | **Frequency Range** | 0.67 MHz to 170 MHz | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **Frequency Tolerance** | ±50 ppm (standard for 'B' designation) | --- ## 2. Key Electronic Features ### A. PLL Technology Unlike fixed-frequency quartz crystals, the M7S series utilizes an internal **Phase-Locked Loop (PLL)**. This allows the factory or a distributor to program the device to any specific frequency within its range, significantly reducing lead times for custom frequencies. ### B. Power Management The "J" in the suffix typically denotes the **Standby (ST)** or **Output Enable (OE)** function. * **OE (Output Enable):** The internal oscillator keeps running, but the output buffer is gated. * **ST (Standby):** The entire device powers down to minimize current consumption (micro-amps). ### C. Low Jitter & Phase Noise Designed for high-speed data applications, these oscillators maintain low cycle-to-cycle jitter, making them suitable for: * Gigabit Ethernet * Fibre Channel * Microprocessors and FPGAs --- ## 3. Pin Configuration The physical layout is standard for a 7050-size surface-mount device. | Pin Number | Function | Description | | :--- | :--- | :--- | | **1** | OE or $\overline{ST}$ | Control Pin (High = Output, Low = High Impedance/Standby) | | **2** | GND | Ground Connection | | **3** | OUT | CMOS Output Signal | | **4** | $V_{CC}$ | Power Supply | --- ## 4. Part Number Breakdown (Nomenclature) * **M7S:** Series identifier (7.0x5.0mm Package). * **22:** Frequency stability code (often ±50ppm). * **F:** Operating Temperature Range (-40 to +85°C). * **B:** Supply Voltage (Variable/Wide range). * **J:** Functional pin definition (Standby/Output Enable). * **-R:** Packaging (Tape & Reel). ---