ICS290PG - 200MHz Triple PLL Clock Synthesizer | Renesas
料号： ICS290PG ✓ 量产中ICS290PG 概述
A clock synthesizer is an integrated circuit that derives one or more stable timing signals from a reference clock or crystal. Clock and timing ICs sit within the broader timing-control hierarchy used by processors, communications equipment, storage systems, and test instrumentation. A PLL-based synthesizer can multiply, divide, or otherwise derive clock frequencies while providing programmable output arrangements and phase-related reference signals.
The ICS290PG uses three PLL sections to produce multiple related outputs from a common reference source. Its operating input types are clock or crystal, while its output logic is CMOS. The stated input-to-output ratio reaches 1:8, and the maximum generated frequency is 200 MHz. Spread-spectrum capability can help redistribute clock energy across a frequency band, which is useful where controlled spectral spreading is desirable for system timing, interface, or electromagnetic-interference considerations.
The PGG20 package offers 20 pins and an operating temperature range from -40 °C to +85 °C. The device is identified as lead-free and is supplied in a tube for the cataloged ordering configuration. Pin functions, programmable register details, reference-frequency limits, output configurations, jitter characteristics, supply-voltage range, and package dimensions must be confirmed in the manufacturer datasheet before a new board layout is released.
Typical clock-tree applications include processor and controller timing, communications equipment, data-converter systems, storage controllers, and instrumentation. In a communications design, the ICS290PG can create a system clock and reference outputs from one source. In processor-based equipment, it can provide programmable frequencies while reducing the number of independent oscillators and associated distribution components.
The main design consideration is validating the complete clock architecture. The reference input, PLL programming values, output enable sequence, trace topology, and downstream jitter requirements must be evaluated together. Short, controlled clock routes and proper return paths help preserve signal quality, while an output-termination strategy should follow the impedance of the PCB and the receiving device.
This page combines verified device characteristics, application guidance, pin and package constraints, comparison fields, and replacement guidance. It is structured to help engineers identify whether the ICS290PG meets the required frequency, output-count, logic, temperature, and package conditions before committing a PCB footprint or production BOM.
直接替换替代料： ICS290PG ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
ICS290PGIT
✅ 直接替换📋 参考替代料（不在目录中）
ICS290PGILF
✅ 直接替换📋 参考替代料（不在目录中）
ICS290PG 规格参数
| Product Type | Triple-PLL field-programmable spread-spectrum clock synthesizer |
| PLL Configuration | 3 PLL sections |
| PLL Bypass | Supported |
| Input Type | Clock or crystal |
| Output Logic | CMOS |
| Maximum Frequency | 200 MHz |
| Number of Circuits | 1 clock synthesizer circuit |
| Input-to-Output Ratio | 1:8 |
| Maximum Output Count | 8 clock outputs |
| Spread Spectrum | Field-programmable |
| 封装 | 20-pin TSSOP (PGG20) |
| 工作温度 | -40 °C to +85 °C |
| Lead-Free Status | Yes |
| Carrier Type | Tube |
| 安装类型 | Surface mount |
| Reference Outputs | Multiple reference clock outputs supported |
ICS290PG 20-pin tssop (pgg20) 引脚配置指南
ICS290PG（20-pin tssop (pgg20) 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： ICS290PG.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ICS290PG 适用于 6 应用s: Processor Clock Distribution, Communications Equipment Timing, Data Converter Clocking, Industrial Control Systems, Storage Controller Clocking, Test and Measurement Instruments.
Processor Clock Distribution
The ICS290PG fits processor clock trees that need several related timing outputs from one reference. Its three-PLL architecture can produce as many as eight outputs, including reference clocks, while the 200 MHz maximum provides headroom for common system-clock rates. A designer can use clock or crystal input, select suitable divider and output settings, and use spread-spectrum programming where reduced peak spectral concentration is beneficial. The key qualification is jitter and edge quality: compare the datasheet limits with the processor’s minimum setup, hold, and cycle-time requirements before committing to the part.
Communications Equipment Timing
The ICS290PG is suitable for communications equipment requiring a programmable local clock tree and several reference outputs. A single clock or crystal reference can feed three PLL sections, and the device can generate up to eight outputs at frequencies up to 200 MHz. This can simplify distribution compared with several unrelated oscillators when the receivers, converters, and control logic require related timing domains. Spread-spectrum operation may help manage narrowband clock energy, but the system designer must confirm reference-input range, output jitter, phase-noise expectations, and channel-specific timing margins from the manufacturer datasheet.
Data Converter Clocking
The ICS290PG can supply programmable sampling or interface clocks to high-speed data converters and related digital signal-processing chains. Up to eight outputs allow a converter device, communications block, and controller to receive related clocks derived from a common source. The maximum frequency of 200 MHz makes the device relevant to many moderate-rate conversion systems, while the clock or crystal input selection supports both external oscillator and resonator-based architectures. Because converter performance depends on aperture jitter and clock symmetry, those requirements must be checked against the device characteristics before using the maximum frequency as the design target.
Industrial Control Systems
The ICS290PG fits industrial control systems where several controller, interface, and conversion blocks need deterministic related clocks. The triple-PLL architecture, programmable spread-spectrum operation, PLL bypass, and as many as eight outputs provide flexibility within one 20-pin TSSOP device. Its -40 °C to +85 °C operating range covers many industrial environments, although the complete enclosure temperature and qualification requirements still apply. Design work should preserve clean reference routing, confirm power-supply tolerances, and validate output jitter at each PLL divider setting rather than relying only on the headline 200 MHz maximum.
Storage Controller Clocking
The ICS290PG can provide a compact clock solution for storage controllers, interface bridges, and their supporting digital logic. A common reference reduces the number of independent clock sources, while multiple outputs can serve controller logic, interface transceivers, and reference domains at related frequencies. The device reaches 200 MHz, covering a useful portion of embedded storage-interface clock requirements when combined with appropriate dividers. Designers should verify reference jitter, output rise and fall behavior, enable sequencing, and the receiving devices’ tolerance to clock distortion before approving the architecture.
Test and Measurement Instruments
The ICS290PG can organize the clock tree in test and measurement equipment requiring multiple derived frequencies from a stable reference. Three PLLs and up to eight outputs allow separate clocks for acquisition, conversion, control, and communication sections without relying on a large collection of oscillators. Field-programmable spread-spectrum operation may be useful when engineers want to control the distribution of clock energy, and PLL bypass supports clock-tree testing or transition scenarios. Instrument designers must account for jitter, reference purity, output enable behavior, and deterministic layout across the complete instrument rather than evaluating only nominal frequency.
工程参考数据： ICS290PG ——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 | ICS290PGIT | ICS290PGILF |
|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | TSSOP-20 (PGG20) | TSSOP-20 (PGG20) - same | TSSOP-20 (PGG20) - same |
| Product Type | Triple-PLL spread-spectrum clock synthesizer | Triple-PLL spread-spectrum clock synthesizer | Triple-PLL spread-spectrum clock synthesizer |
| Maximum Frequency | 200 MHz | 200 MHz | 200 MHz |
| PLL Configuration | 3 PLL sections | 3 PLL sections | 3 PLL sections |
| Output Logic | CMOS | CMOS | CMOS |
| Maximum Output Count | 8 outputs | 8 outputs | 8 outputs |
关键差异点
- Three-PLL architecture with eight-output capability （对比 ICS290PGIT)
- Same 200 MHz frequency class （对比 ICS290PGILF)
- Compatible package and logic format （对比 ICS290PGIT)
设计说明
Route the reference input and clock outputs as short, controlled-impedance traces, and provide a continuous ground reference beneath each high-speed path. Keep programming-interface and crystal-related connections away from sensitive output routing where practical. Because the ICS290PG supports clock or crystal references, use the manufacturer reference circuit for the selected input mode and preserve the specified grounding and component-placement arrangement.
Validate rise time, fall time, jitter, and edge symmetry at each PLL divider and output setting rather than assuming that the 200 MHz headline value guarantees acceptable timing everywhere. Probe the final load points on the assembled PCB, use suitable termination when required by the impedance environment, and compare measured clock behavior against the receiving device’s setup, hold, and maximum-frequency limits.
Do not substitute a clock synthesizer using only the package and maximum frequency. The PLL programming registers, reference-input range, bypass behavior, output-enable sequence, and output assignments determine functional equivalence. Before approving ICS290PGIT or ICS290PGILF, compare the complete datasheet pin tables, electrical characteristics, register maps, and ordering information with the installed ICS290PG design.
Follow the manufacturer’s recommended input and output capacitance and power-supply layout. Place bypass capacitance at the device supply pins, maintain a low-impedance supply and ground path, and check the complete operating voltage at the IC rather than only at the regulator. Supply noise or inadequate decoupling can degrade clock jitter and create output failures that resemble PLL-programming errors.
合规信息
The available component information explicitly identifies ICS290PG as lead-free. No explicit RoHS, REACH, halogen-free, or conflict-minerals declarations were available.
