ICS270PG - 200MHz Triple-PLL VCXO Clock Synthesizer | Renesas
MPN: ICS270PG ✓ فعالICS270PG نمای کلی
A clock synthesizer is an integrated timing device that accepts a reference source and derives one or more stable, programmable clock outputs for digital systems. A VCXO adds voltage-controlled frequency adjustment to the crystal reference, while a PLL multiplies or divides that reference to produce the required output frequencies. The ICS270PG combines both functions in a clock and timing IC, allowing one reference crystal to serve multiple clock domains.
Its principal features include three phase-locked loops, PLL bypass capability, one internal clock circuit, a crystal reference input, and CMOS output signaling. The synthesizer can generate as many as eight outputs, including multiple reference clocks originating from a low-frequency reference source. This output flexibility reduces the number of separate oscillators required in systems requiring related but unequal clock rates.
The triple-PLL architecture separates clock-generation functions that might otherwise require multiple oscillator and divider combinations. PLL bypass is useful during configuration, test, or operating conditions where a directly derived clock path is preferred. CMOS outputs are suitable for interfacing with modern digital logic, while the 200 MHz maximum output frequency supports demanding processor, communications, data-conversion, and industrial control clock trees.
Typical applications include communications infrastructure, instrumentation, industrial automation, test and measurement equipment, data-acquisition systems, and embedded control platforms. In each case, the device can centralize multiple clock requirements around a crystal reference and provide programmable outputs instead of requiring a separate oscillator for each frequency domain. The multiple reference outputs can support communication links, data converters, memory interfaces, and digital control logic within one clock tree.
The principal design consideration is the device's programmed configuration and the resulting relationships among its three PLLs, reference outputs, and output dividers. Review the manufacturer datasheet's pin-description table, recommended external components, clock-output constraints, and programming procedure before laying out a new board. PCB placement should minimize clock traces and keep the crystal and associated components close to the device.
This product page summarizes the documented architecture, package information, output capability, and practical design considerations of the ICS270PG. It also distinguishes verified technical facts from details that still require confirmation from the manufacturer datasheet, helping engineers plan the architecture without overlooking programming, layout, or qualification work.
جایگزین‌های drop-in برای ICS270PG — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
ICS270CG
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشده📋 جایگزین مرجع (خارج از کاتالوگ)
ICS270PG مشخصات
| Device Type | Clock/Frequency Synthesizer, Fanout Buffer (Distribution) |
| Architecture | Triple-PLL field-programmable VCXO clock synthesizer |
| Maximum Frequency | 200 MHz |
| Number of Clock Circuits | 1 |
| PLL Count | 3 PLLs |
| PLL Bypass | Yes |
| Reference Input | Crystal |
| نوع خروجی | CMOS |
| Maximum Output Count | 8 outputs |
| Reference Output Capability | Multiple reference clocks from a low-frequency reference |
| Programmability | Field programmable |
| Frequency Control Method | Voltage-controlled crystal oscillator (VCXO) |
| بسته‌بندی | 20-TSSOP |
| Package Width | 0.173 inch (4.40 mm) |
| نوع نصب | Surface Mount |
| وضعیت RoHS | unknown |
| REACH Status | unknown |
| AEC-Q100 Qualification | not_applicable |
راهنمای پیکربندی پین ICS270PG 0.173 inch (4.40 mm)
پیکربندی پین برای ICS270PG (پکیج 0.173 inch (4.40 mm)). شماره‌گذاری پایه‌ها، عملکردها و نمودارهای اتصال در دیتاشیت سازنده تعریف شده است. برای footprint دقیق و دستورالعمل‌های لحیم‌کاری به آن مراجعه کنید.
داده پین‌آوت تفصیلی موجود نیست برای ICS270PG.
به دیتاشیت برای پیکربندی کامل پین‌ها.
کاربردهای معمول
ICS270PG مناسب است برای 6 کاربردs: Communications Clock Trees, Industrial Automation Systems, Test and Measurement Equipment, Data Acquisition Systems, Embedded Control Platforms, Network and Interface Timing.
Communications Clock Trees
The ICS270PG fits communications equipment that requires several related clock signals from one crystal reference. Its three-PLL architecture can derive up to eight outputs, including multiple reference clocks from a low-frequency source, while the documented maximum frequency reaches 200 MHz. This allows interface logic, converters, and control circuits to be organized around a common timing origin instead of using unrelated oscillators. The principal benefit is centralized clock management and fewer independent frequency-generation blocks. Engineers should still compare the required output frequencies, divider ratios, jitter, and channel relationships with the manufacturer programming and timing limits before finalizing the clock architecture.
Industrial Automation Systems
Industrial automation controllers can use the ICS270PG to distribute multiple programmable clocks required by sampling, communication, memory, and control subsystems. The device's triple-PLL VCXO topology accepts a crystal reference and can generate up to eight outputs, including multiple reference clocks. Using one synthesis device simplifies frequency relationships and may reduce the number of discrete oscillator paths. Its 200 MHz ceiling supports higher-speed digital subsystems while CMOS outputs connect to modern logic. Because the available product information does not state the industrial temperature range, qualification limits, or long-term availability commitments, confirm those requirements against the manufacturer documentation before production deployment.
Test and Measurement Equipment
The ICS270PG is applicable to instrumentation that needs coherent clocks across acquisition, conversion, processing, and communication sections. A common crystal-derived reference and up to eight outputs allow clock domains to remain mathematically related, which can simplify calibration and synchronization reasoning. The triple-PLL architecture also permits programmable frequency relationships where supported by the configuration method. PLL bypass can support controlled test or reference-clock operating modes. For laboratory-grade instruments, verify output jitter, phase-noise behavior, temperature stability, and supply requirements in the manufacturer datasheet, since those characteristics are not quantified in the available product listing.
Data Acquisition Systems
Data-acquisition designs often combine converters, digital signal processors, memory, and communications interfaces with related but unequal clock rates. The ICS270PG can serve this need through its crystal input, three PLLs, and as many as eight CMOS outputs derived from a low-frequency reference. Centralizing these signals can make clock routing and phase relationships easier to manage than a collection of independent oscillators. Its 200 MHz maximum frequency accommodates demanding digital processing paths. Designers should assign each output through the manufacturer's programming procedure and confirm that all divider ratios, output frequencies, and acquisition timing requirements remain valid across the complete operating range.
Embedded Control Platforms
An embedded control platform can benefit when it must support several related clock domains for processors, memory, serial links, and peripherals. The ICS270PG's triple-PLL VCXO architecture derives multiple outputs from one crystal reference, while PLL bypass provides an additional clock-path option for testing or operating modes. This approach can reduce oscillator component count and create a clear timing hierarchy. The 20-TSSOP package supports compact surface-mount assembly. Because controller interfaces, supply voltages, and timing tolerances vary considerably, check the complete electrical and programming requirements in the manufacturer datasheet before assigning ICS270PG outputs to a specific processor or peripheral.
Network and Interface Timing
Network interface equipment often needs multiple reference and working clocks distributed among high-speed logic, transceivers, and support circuits. The ICS270PG can generate up to eight CMOS clock outputs, including multiple reference clocks, from a crystal-based source using three PLLs. This makes it suitable for centralized timing in interface-centric designs, particularly where clock domains must remain coordinated. The 200 MHz maximum output frequency supports demanding digital logic, while bypass offers flexibility during diagnostic or configuration work. Validate lane-rate assumptions, clock-to-output uncertainty, jitter, and supply sequencing against the manufacturer limits, because the available listing does not quantify these timing specifications.
داده‌های مرجع مهندسی برای ICS270PG — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | ICS270CG |
|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics |
| Package | 20-TSSOP | 20-TSSOP |
| Device Type | Clock/Frequency Synthesizer, Fanout Buffer (Distribution) | Clock/Frequency Synthesizer |
| Architecture | Triple-PLL field-programmable VCXO clock synthesizer | Triple-PLL field-programmable VCXO clock synthesizer |
| Maximum Frequency | 200 MHz | 200 MHz |
| Reference Input | Crystal | Crystal |
| Output Type | CMOS | CMOS |
| Maximum Output Count | 8 outputs | 8 outputs |
| PLL Bypass | Yes | Yes |
| Number of Clock Circuits | 1 | 1 |
تفاوت‌های کلیدی
- Multiple outputs from one crystal-referenced synthesizer (در مقابلICS270CG)
- Maximum operating frequency (در مقابلICS270CG)
- Clock-generation flexibility (در مقابلICS270CG)
یادداشت‌های طراحی
Place the ICS270PG close to the crystal and its required load network, then route the reference path away from switching nodes and other high-energy clock nets. Follow the manufacturer reference layout for component spacing and grounding. Use a continuous ground plane where practical, keep clock traces short, minimize vias and stubs, and avoid routing sensitive clock lines beneath digital or power-conversion areas that can inject crosstalk.
Treat every ICS270PG output as a potentially high-frequency clock signal. Confirm the target trace impedance, load capacitance, and termination strategy from the manufacturer interface specifications. Keep fanout branches short and balanced when clocks feed multiple destinations, and validate rise time, overshoot, ringing, and timing margin at the receiver rather than relying only on source-edge measurements.
Do not assume that three PLLs automatically provide three unrelated frequencies. Program each output only within the divider, PLL, and frequency constraints stated in the manufacturer datasheet, and account for reference accuracy when setting end frequencies. Confirm the behavior of PLL bypass during startup and mode changes so that downstream logic is not exposed to an unintended clock transition.
Follow the manufacturer guidance for supply voltage, decoupling, and output enable sequencing. Place required bypass capacitors at the device power pins and provide a return path that does not force clock or reference currents through long PCB traces. Verify startup, shutdown, and configuration behavior across all operating modes, especially when PLL bypass and multiple clock outputs interact with downstream reset logic.
اطلاعات انطباق
The available product and distributor records do not state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. The ICS270PG is a general-purpose clock and timing IC rather than an automotive-qualified device.
