ICS501MI - 140MHz LOCO PLL Clock Multiplier | Renesas Electronics
Артикул: ICS501MI ✗ Снят с производстваICS501MI Обзор
A PLL-based clock generator is a timing IC that phase-locks an output signal to a reference source and multiplies the reference frequency. In the broader clock and timing hierarchy, the ICS501MI belongs to the PLL clock-multiplier family, a type of clock and timing IC used for frequency synthesis, clock distribution, and digital system timing. Its LOCO designation reflects a low-cost oscillator architecture intended to provide economical frequency multiplication without requiring a separate high-frequency crystal resonator.
The ICS501MI accepts a fundamental-mode crystal or external clock source, making it useful for processor, communication, control, and embedded digital systems. The 140 MHz maximum output frequency provides ample headroom for systems requiring a higher-frequency operating clock from a lower-cost reference. Its 8-SOIC package is compatible with conventional surface-mount PCB assembly methods and is suitable for designs where component count and board area must be controlled.
The principal design consideration is ensuring that the reference crystal, external clock, feedback network, and output interface meet the timing requirements of the target system. The PLL must operate within the specified input and output frequency ranges, and the associated passive components should be placed close to the device to minimize clock noise and signal-integrity degradation. The output clock should be routed away from high-current switching nodes and noisy analog sections of the board.
Typical applications include digital controller clocking, communications equipment, embedded processors, industrial control systems, and general-purpose frequency multiplication. Using a PLL multiplier can reduce the number of specialized high-frequency crystals required in a design and provide a flexible way to derive multiple system timing domains. XAIPART provides an engineering-focused product record with manufacturer documentation, package information, practical design guidance, and verified sourcing details for design review and procurement.
Аналоги без доработки для ICS501MI — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с ICS501MI (тот же форм-фактор и посадочное место) — отличается по Maximum Output Frequency, Package, Reference Input.
ICS501MILFT
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
ICS501MI Характеристики
| Product Type | LOCO PLL clock multiplier |
| Maximum Output Frequency | 140 MHz |
| Input Frequency Range | 2 MHz to 50 MHz |
| Reference Input | Fundamental-mode crystal or clock input |
| Output Description | High-quality, high-frequency clock output |
| Architecture | Phase-Locked Loop (PLL) |
| Oscillator Type | LOCO Low Cost Oscillator |
| Корпус | 8-SOIC |
| Package Width | 3.90 mm |
| Package Length | 0.154 in |
| Тип монтажа | Surface Mount |
| Количество выводов | 8 pins |
| Функция | Clock generation and frequency multiplication |
Руководство по цоколевке ICS501MI в корпусе 0.154 in
Цоколевка для ICS501MI (корпус 0.154 in). Нумерация выводов, функции и схемы подключения определены в техническом описании производителя. Обратитесь к нему для точного посадочного места и рекомендаций по пайке.
Нет подробных данных о распиновке для ICS501MI.
Обратитесь к даташиту для полной конфигурации выводов.
Типичное применение
ICS501MI подходит для 6 применениеs: Digital Processor Clocking, Industrial Control Systems, Communications Equipment, Data Acquisition and Conversion, Embedded Consumer Devices, Test and Measurement Instruments.
Digital Processor Clocking
The ICS501MI fits digital processor designs that need a higher operating clock than the available reference source. A lower-frequency crystal can feed the PLL, which can generate a clock up to 140 MHz for processor, controller, or programmable-logic clocking. This approach can simplify the resonator selection process while retaining an 8-SOIC surface-mount footprint. The important design checks are reference stability, PLL configuration, output-jitter requirements, and the processor’s allowable clock tolerance. Keep the crystal and feedback network close to the device, provide a clean ground reference, and route the output as a short clock trace away from high-current switching paths.
Рекомендуется
Industrial Control Systems
ICS501MI is suitable for industrial control equipment where multiple digital subsystems need a common, high-quality clock without requiring several specialized high-frequency crystals. The PLL multiplier accepts a reference in the 2 MHz to 50 MHz range and supports output frequencies up to 140 MHz, making it useful for control processors, data-conversion systems, and communications controllers. In an industrial design, account for temperature range, clock tolerance, supply regulation, and electromagnetic coupling from adjacent power stages. Validate the PLL behavior across the full intended frequency and load range before production release.
Рекомендуется
Communications Equipment
The ICS501MI can provide the multiplied reference clock needed by communications equipment that separates a lower-cost reference source from a higher-frequency internal timing domain. Its PLL-based architecture and 140 MHz output ceiling fit equipment requiring a compact clock-generation stage, including interface controllers, protocol processors, and line-card electronics. The clock quality assessment should include phase noise or jitter, reference stability, supply sensitivity, and the relationship between output frequency and system timing budget. Use short, controlled-impedance clock routing and isolate the output from high-speed data paths where crosstalk could affect timing margins.
Рекомендуется
Data Acquisition and Conversion
ICS501MI can serve as the clock source for data-acquisition and mixed-signal systems where a controller, converter, and digital processing section need a common timing reference. Deriving the clock through the PLL allows a lower-frequency crystal to support a faster internal clock domain, up to the device’s 140 MHz maximum output frequency. For analog measurement systems, preserve clock-to-data timing margin, isolate the clock from switching converters, and verify that the sampling architecture does not require a jitter specification tighter than the PLL can meet. Decoupling and reference-network placement remain critical for predictable clock quality.
Рекомендуется
Embedded Consumer Devices
The ICS501MI offers a compact way to derive a higher-frequency clock for compact embedded products, including controllers, interface modules, and smart-device peripherals. Its 8-SOIC package supports surface-mount assembly, while the LOCO PLL architecture can reduce reliance on higher-cost specialized crystal oscillators. Designers should confirm that the operating temperature, supply voltage, startup behavior, and clock-accuracy requirements of the end product are acceptable. Low-power operation should also be checked carefully because clock-generation topology, load, and activity state can influence overall system power consumption.
Рекомендуется
Test and Measurement Instruments
ICS501MI can support internal timing generation in test and measurement instruments that need a stable digital reference for control logic, data capture, or communications. By multiplying a lower-frequency reference to as much as 140 MHz, the device can help reduce the number of distinct clock sources required in a multi-section instrument. The clock must remain isolated from sensitive analog paths, and timing accuracy should be characterized over the required input range and temperature span. Use a low-noise reference arrangement and verify startup settling before beginning precision measurements. The manufacturer datasheet remains the controlling source for electrical limits and application conditions.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для ICS501MI — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | ICS501MILFT |
|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics |
| Package | 8-SOIC | 8-SOIC - same |
| Product Type | LOCO PLL clock multiplier | LOCO PLL clock multiplier |
| Maximum Output Frequency | 140 MHz | 140 MHz |
| Input Frequency Range | 2 MHz to 50 MHz | 2 MHz to 50 MHz |
| Reference Input | Crystal or clock input | Crystal or clock input |
| Architecture | PLL frequency multiplication | PLL frequency multiplication |
| Pin Compatibility | 8-SOIC pin configuration | Complete replacement with consistent terminals |
| Mounting Type | Surface Mount | Surface Mount |
| Ordering Suffix | MI | MILFT tube-packaging option |
Ключевые отличия
- Documented complete replacement (против ICS501MILFT)
- PLL-based clock multiplication (против ICS501MILFT)
- Compact surface-mount implementation (против ICS501MILFT)
Заметки по проектированию
Place the crystal, crystal-load capacitors, and PLL feedback components close to the ICS501MI pins. Keep the clock output route short and provide a continuous ground reference beneath the device. Avoid routing the output through areas containing switching-regulator traces, relay contacts, or high-slew-current digital signals because coupling can degrade clock stability.
Confirm that the selected reference remains between 2 MHz and 50 MHz and that the requested output does not exceed 140 MHz at startup, across temperature, and at maximum operating conditions. Treat the PLL as a feedback system rather than an ideal frequency converter: use the manufacturer reference network and verify phase noise, jitter, and startup settling before treating the clock as production-ready.
Decouple the supply pins according to the manufacturer layout guidance and provide a quiet source for the reference clock. Check the exact supply-voltage and current limits in the Renesas 501 datasheet before finalizing the regulator. Adequate local decoupling reduces supply disturbance at the clock generator, while a stable reference rail improves repeatability across power-supply and temperature conditions.
Информация о соответствии
The device is a clock and timing IC rather than an automotive-qualified product. Compliance attributes are not stated in the available manufacturer and distributor information.
