ICS275PG - 200MHz Triple-PLL VCXO Clock Synthesizer | Renesas
料号： ICS275PG ✓ 量产中ICS275PG 概述
A VCXO, or voltage-controlled crystal oscillator, is a clock-generation architecture that combines a crystal oscillator with voltage-controlled frequency adjustment. A PLL, or phase-locked loop, locks an internal oscillator to a reference signal and provides programmable frequency synthesis. The ICS275PG therefore belongs to the clock synthesizer and frequency generator hierarchy, where it functions as a timing IC for communications, industrial control, and digital processing systems.
The device's principal features include three PLL sections, PLL bypass capability, a crystal reference input, CMOS output technology, and operation up to 200 MHz. The multiple output architecture allows one reference source to feed several related clock domains. Its field-programmable nature also permits output-frequency and phase relationships to be configured for systems that require more flexibility than a fixed-frequency oscillator.
The ICS275PG uses a 3.3 V-class supply range centered on the conventional 3.3 V operating point. Its specified 0°C to 70°C temperature range supports commercial-temperature equipment, although the datasheet pin description and detailed electrical limits must be checked before applying the device outside that range. The TSSOP-16 package is intended for surface-mount assembly and supports compact board layouts without requiring a through-hole package.
Typical uses include generating reference and communication clocks, distributing clocks among multiple digital subsystems, and synthesizing programmable clock outputs for test and measurement equipment. It is particularly relevant where several outputs must remain phase-related to a common crystal reference. The CMOS outputs are suited to digital logic interfaces when their voltage, timing, and drive requirements are checked against the receiving circuitry.
PCB implementation should preserve a short return path from each supply connection to ground, place decoupling capacitance close to the device, and route clock outputs as controlled-impedance traces when timing margin is limited. Follow the manufacturer's recommended crystal and load-capacitance configuration because oscillator startup, frequency accuracy, and loop stability depend on the complete reference network rather than the IC alone.
This page organizes the ICS275PG's clock-generation capabilities, package information, application guidance, and design considerations. It also provides an explicit framework for evaluating replacement requirements, including package compatibility, pin compatibility, supply voltage, output type, and maximum operating frequency.
直接替换替代料： ICS275PG ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
该产品暂无直接替换替代料。
请求替代料ICS275PG 规格参数
| Device Type | Triple-PLL field-programmable VCXO clock synthesizer |
| Maximum Output Frequency | 200 MHz |
| Supply Voltage Range | 3.135 V to 3.465 V |
| Reference Input | Crystal |
| 输出类型 | CMOS |
| PLL | Yes, with bypass |
| PLL Count | 3 |
| Number of Circuits | 1 |
| Maximum Number of Clock Outputs | 4 |
| 工作温度范围 | 0°C to 70°C |
| 封装 | TSSOP-16 |
| Package Width | 4.40 mm |
| 安装类型 | Surface mount |
| Series | ICS275 VersaClock |
ICS275PG 4.40 mm 引脚配置指南
ICS275PG（4.40 mm 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： ICS275PG.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ICS275PG 适用于 6 应用s: Communications Clock Generation, Programmable Frequency Synthesis, Multi-Domain Clock Distribution, Industrial Control Systems, Test and Measurement Instruments, Digital Signal Processing Platforms.
Communications Clock Generation
The ICS275PG fits communications equipment that requires a crystal-referenced clock source with programmable outputs. Its three-PLL architecture and maximum frequency of 200 MHz allow one reference to support multiple related clock domains, while the CMOS output type suits digital logic. In implementation, the device can sit near the clock-consuming circuitry to limit trace length. Engineers should confirm output jitter, edge-rate, and drive-level requirements against each receiver and maintain a short return path from the 3.3 V supply.
Programmable Frequency Synthesis
The ICS275PG is appropriate when a fixed crystal frequency must be converted into one or more programmable clock frequencies. Its three PLLs provide greater flexibility than a single fixed-frequency oscillator, while PLL bypass allows a reference path to be considered during bring-up or specific operating modes. Use the manufacturer's programming information to establish supported output ratios and phase relationships, then validate lock behavior under supply variation and temperature across the specified 0°C to 70°C range.
Multi-Domain Clock Distribution
The ICS275PG can support digital systems requiring as many as four outputs derived from a common crystal reference. This arrangement reduces the number of independent oscillators and helps maintain deterministic relationships among related domains. The TSSOP-16 package supports compact surface-mount layouts, but pin assignment and output multiplexing must follow the manufacturer pin table. Keep clock traces short, provide a continuous ground reference, and verify timing at the far end of each load.
Industrial Control Systems
The ICS275PG can supply programmable clock signals for industrial controllers, data-acquisition equipment, and control modules operating from a nominal 3.3 V rail. Its 200 MHz ceiling accommodates demanding digital timing, and its commercial 0°C to 70°C specification supports many indoor industrial environments. It should not be assumed suitable for extended-temperature machinery without a qualified alternative. PCB layout should minimize clock crosstalk and keep the reference oscillator away from high-current switching nodes.
Test and Measurement Instruments
The ICS275PG is useful in test and measurement systems that require several clock outputs with controlled relationships. Multiple CMOS outputs can support acquisition, conversion, processing, and interface sections, while the programmable PLL architecture simplifies frequency selection. The tradeoff is a more complex configuration and verification process than a fixed oscillator. Review output accuracy, jitter, skew, and duty-cycle specifications for the required measurement bandwidth before finalizing the clock tree.
Digital Signal Processing Platforms
The ICS275PG can provide clocking for DSP-based platforms that need a stable local reference and multiple derived outputs. A crystal input supports frequency accuracy, while the maximum 200 MHz output permits demanding signal-processing clock rates. The device's CMOS outputs integrate naturally with digital logic, although source and receiver timing requirements determine whether external buffering or termination is needed. Place the synthesizer near the loads when possible and verify power sequencing because the supported supply range is narrowly centered on 3.3 V.
工程参考数据： ICS275PG ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 |
|---|---|
| Package | TSSOP-16 |
| Brand | Renesas Electronics |
| Device Type | Triple-PLL field-programmable VCXO clock synthesizer |
| Maximum Output Frequency | 200 MHz |
| Supply Voltage Range | 3.135 V to 3.465 V |
| Reference Input | Crystal |
| Output Type | CMOS |
| PLL Configuration | Triple PLL with bypass |
| Maximum Clock Outputs | 4 |
| Operating Temperature Range | 0°C to 70°C |
| Mounting Type | Surface mount |
设计说明
Place the ICS275PG close to the clock-consuming circuitry and route each CMOS output as a short clock trace. Maintain a continuous ground plane beneath the TSSOP-16 and avoid routing clock signals alongside switching nodes or high-speed data paths. If a long trace is unavoidable, use the manufacturer's recommended termination and source-loading arrangements to control edge reflections.
Use a supply that remains between 3.135 V and 3.465 V under tolerance and transient conditions. Connect local decoupling capacitance close to the device's supply and ground pins with a minimal loop. The IC's power dissipation and current requirements should be checked from the manufacturer datasheet for the selected clock configuration, while the supply must remain stable during PLL acquisition and startup.
Treat every CMOS output as a potentially high-speed clock edge. Check output rise time, drive capability, jitter, duty cycle, and skew against the receiving device before enabling traces on the PCB. Leave unused outputs properly configured according to the manufacturer guidance rather than allowing them to become uncontrolled sources of edge noise or excessive AC current.
Do not replace the crystal reference with an arbitrary oscillator without checking amplitude, frequency, load capacitance, and startup requirements. The external crystal network is part of the oscillator design and can determine frequency accuracy and startup reliability. Also confirm that the programmed PLL ratios and output enables are valid for every operating mode before using the bypass path.
合规信息
The component is a commercial-temperature clock IC, so AEC-Q100 qualification is not applicable. RoHS, REACH, lead-free, halogen-free, and conflict-minerals declarations are not stated in the cited product records.
