ICS663M - 120MHz PLL Clock Synthesizer | Renesas Electronics
MPN： ICS663M ✓ 啟用中ICS663M 概覽
A phase-locked loop, or PLL, is a frequency-control building block that locks an internally generated or controlled clock to a reference signal. Within the clock and timing hierarchy, the ICS663M functions as a PLL building block combining a phase detector, charge pump, voltage-controlled oscillator, and output buffer. This allows an external timing loop to synthesize or synchronize a stable CMOS clock rather than relying only on a free-running oscillator.
The verified product information identifies the ICS663M as a low-cost PLL intended for clock synthesis and synchronization. Its principal documented parameters include one PLL circuit, one clock input, one CMOS output, no differential input or output, a 1:1 input-to-output division ratio, and operation up to 120 MHz. The 8-SOIC package provides a compact surface-mount option for clock-generation and timing circuits.
The PLL architecture makes external loop filtering an important part of the application circuit. External components can establish loop bandwidth, damping, and phase-error behavior, which influence jitter, acquisition time, and reference-clock rejection. Actual performance therefore depends on the external loop network, reference frequency, output loading, supply quality, and board layout rather than only on the nominal 120 MHz maximum.
Typical applications include reference-clock multiplication, synchronization of communications equipment, generation of a derived system clock, and recovery or conditioning of a timing signal. The ICS663M is also suitable for industrial instrumentation, test equipment, and embedded systems that require a phase-locked CMOS clock but do not require a highly integrated programmable clock generator.
Designers should provide stable supply and reference-clock connections, follow the manufacturer’s recommended loop-filter topology, and use short return paths for clock and ground. Because an 8-SOIC footprint is compact, trace geometry and capacitance control become important when maintaining signal integrity at higher clock rates.
This page combines verified distributor and manufacturer-linked product information with practical PLL design guidance, transparent comparison data, and availability details. It distinguishes documented parameters from engineering values that still require confirmation from the Renesas datasheet before schematic release or production qualification.
直接替換替代品，適用於 ICS663M — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： ICS663M （相同外形與佔位） — 差異在於 Package, Supply Voltage Range, Device Type, Maximum Frequency, Product Type.
ICS651M
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →ICS551M
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →ICS542M
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →ICS663M 規格
| Product Type | Phase-locked loop (PLL) building block |
| Maximum Frequency | 120 MHz |
| Number of Circuits | 1 circuit |
| PLL Type | Yes |
| Input Type | Clock |
| 輸出類型 | CMOS |
| Input-to-Output Ratio | 1:1 |
| Differential Input | No |
| Differential Output | No |
| Supply Voltage Range | 3.13 V to 5.5 V |
| 封裝 | 8-SOIC (0.154 inch, 3.90 mm width) |
| 安裝類型 | Surface mount |
| Shipping Package | Tube |
| Functional Blocks | Phase detector, charge pump, voltage-controlled oscillator, and output buffer |
ICS663M tube 腳位配置指南
ICS663M（tube 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： ICS663M.
請參閱 資料表 以查看完整腳位配置。
典型應用
ICS663M 適用於 6 應用s: Communications Reference Clock, Industrial Instrumentation, Test and Measurement Equipment, Embedded System Clock Generation, Data Acquisition Synchronization, Frequency-Changing Reference Architecture.
Communications Reference Clock
The ICS663M is appropriate for communications equipment that needs a synthesized or synchronized CMOS clock up to 120 MHz. Its PLL building block combines a phase detector, charge pump, VCO, and output buffer, allowing an external loop filter to lock the output to a reference signal. The verified 1:1 ratio suits systems that already provide the desired fundamental frequency and need phase alignment rather than programmable division. Designers should preserve the 3.13 V to 5.5 V supply range, use a low-noise reference, and validate jitter and acquisition time in the final loop.
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Industrial Instrumentation
The ICS663M can support deterministic clock generation in industrial measurement and control equipment where multiple subsystems must share a stable timing relationship. Its single CMOS output and maximum 120 MHz frequency provide a compact timing solution, while the PLL architecture can synchronize the output to a common reference. Because this is a PLL building block rather than a fully programmable clock controller, the external loop network and output buffering require careful engineering. Confirm the final jitter, temperature behavior, and supply-current limits against the manufacturer datasheet.
推薦
Test and Measurement Equipment
The ICS663M is suitable for test and measurement systems that derive a coherent clock from an external reference. Its phase-locked architecture can lock a VCO-based output to improve synchronization between a source instrument and the device under test, while the documented 120 MHz ceiling accommodates many low- and mid-speed digital test clocks. The 8-SOIC package helps conserve board area in dense instrumentation. Engineers should account for reference-to-output phase noise, output loading, and the settling time imposed by the selected external loop filter.
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Embedded System Clock Generation
The ICS663M can provide a derived CMOS clock for embedded systems that need local synchronization without dedicating a microcontroller pin to clock production. Its 1:1 ratio allows the PLL to preserve the reference frequency while improving phase alignment, and the 8-SOIC package supports compact surface-mount layouts. The device is best suited to systems whose timing requirements are known and fixed. Before deployment, verify reference purity, loop stability, startup behavior, and the maximum operating temperature against the official Renesas documentation.
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Data Acquisition Synchronization
The ICS663M can help synchronize sampling or conversion systems by producing a clock phase-locked to a common reference. A fixed 1:1 relationship is useful when the source already operates at the desired sampling rate, while the PLL building block permits an external loop network to establish filtering and damping. At up to 120 MHz, the device can serve many data-acquisition timing architectures, although converter aperture and sampling requirements ultimately determine whether a dedicated jitter-cleaning clock device is needed. Validate timing margin and clock integrity on the finished board.
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Frequency-Changing Reference Architecture
The ICS663M can participate in a frequency-changing reference architecture in which an external feedback network and loop filter establish the relationship between the reference clock and the PLL output. Although the verified device is described as having a 1:1 ratio, PLL building blocks may be configured through their external network, so the final frequency relationship must be derived from the official application circuit. This approach can produce a controlled clock while retaining the 8-SOIC footprint. It is preferable to programmable clock ICs when the required outputs and divider structure are limited.
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推薦產品摘要
工程參考資料，適用於 ICS663M — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | ICS651M | ICS551M | ICS542M | ICS502M | ICS501M |
|---|---|---|---|---|---|---|
| Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
主要差異化特點
- Documented maximum operating frequency (對比ICS651M)
- Single integrated PLL building-block architecture (對比ICS502M)
- Defined supply-voltage operating range (對比ICS551M)
設計說明
The verified operating range is 3.13 V to 5.5 V. Place the supply bypass capacitor adjacent to the IC power and ground pins, provide a low-impedance return path, and keep switching-regulator routing away from the reference and feedback inputs. The supplied data does not include the recommended capacitor values or output-current limits, so those values must be taken from the Renesas application guidance rather than selected from generic PLL examples.
Use short, continuous traces for the reference, feedback, and clock outputs, with a solid ground plane beneath the device. Route the external loop-filter network close to the charge-pump and VCO-related pins specified by the manufacturer, and avoid routing these sensitive nodes beneath digital clock or switching nodes. Because the ICS663M operates up to 120 MHz, controlled trace geometry and minimized parasitic capacitance are important for preserving phase margin and predictable jitter.
Do not treat a related ICS-series part as a drop-in replacement without comparing every pin, the external loop-filter topology, output drive, supply range, and frequency limits. The verified information identifies a 1:1 ratio, but the external network and feedback configuration determine the final operating behavior. A schematic can appear compatible while producing different jitter, acquisition time, or phase error, so validate the replacement with the original loop components and target reference clock.
Assess clock-edge quality at the far end of the trace rather than only at the ICS663M output. Account for trace loss, load capacitance, return-path discontinuities, and any downstream fanout. If the output drives a long cable, another device, or a high-capacitance node, add an appropriate buffer rather than relying on the PLL output buffer. The verified snippets do not provide edge-rate or drive-current data, so these limits require confirmation from the datasheet.
合規資訊
The supplied verified web results do not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals compliance. These values remain unknown rather than being inferred from the manufacturer or package.