概览
描述
The ISL74420M is a radiation tolerant, quad-output clock fanout IC with an optional internal oscillator. It provides synchronization clocks for any application and is particularly useful in multiphase power converters.
- Connect multiple ISL74420M devices to create more than four synchronized clocks
- Set division and delay options through selection pins or over an I2C/SMBus interface
- Configure each of the four outputs to a specific frequency division and phase delay
- Tune the 48MHz internal oscillator by ±10% with an external resistor
The ISL74420M is available in a 48-lead TQFP-EP package, with specifications covering a temperature range of −55 °C to +125 °C.
特性
- Qualified to Renesas Rad Tolerant Screening and QCI Flow (R34TB0004EU)
- PVIN supply range: 3V to 18V
- Independent clock output supply: 3V to 5.5V
- Programmable output frequency starting at 25kHz
- Internal or external clock source
- Programmable phase delay as low as 15° increments
- I²C/SMBus compatible
- I²C/SMBus or pin strapping to set frequency and phase
- TID radiation lot acceptance testing (LDR ≤10mrad(Si)/s)
- ISL74420M30NZ: 30krad(Si)
- ISL74420M50NZ: 50krad(Si)
- SEE characterization
- No DSEE for PVIN = 20.7V, VCC = 5.5V, and VCCEXT = 6.5V at 46MeV·cm²/mg
- SEFI <10μm² at 46MeV·cm²/mg
- No missing pulse SETs and frequency deviation SETs <3.6% on CLKOUTx at 46MeV·cm²/mg
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| 类型 | 文档标题 | 日期 |
| 数据手册 | PDF 1.34 MB | |
| 材料成分声明 | PDF 98 KB | |
| 材料成分声明 | XML 6 KB | |
| 材料成分声明 | PDF 98 KB | |
| 材料成分声明 | XML 6 KB | |
| 应用说明 | PDF 224 KB | |
6 项目
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设计和开发
开发板与套件
评估
ISL74420M Quad Clock Output Evaluation Board
The ISL74420MEV1Z radiation-tolerant quad clock fanout IC evaluation board features the plastic version of the ISL74420M. Mechanical switches simplify configuration, enabling easier experimentation with frequency and delay selections.
This board is functionally similar to the ISL74420MDEMO1Z, an...
演示
ISL74420M Quad Clock Output Demonstration Board
The ISL74420MDEMO1Z radiation tolerant quad clock fanout IC demonstration board features the plastic version of the ISL74420M. The ISL74420MDEMO1Z is an example small-footprint layout with SMD resistors for user-defined power-up configuration.
This board is functionally similar to the...
参考设计
Power Management Reference Design for Microchip RT PolarFire FPGA Family
The ISLRTPFDEMO1Z is a comprehensive power management reference design tailored to meet the needs of the Microchip radiation tolerant (RT) PolarFire® SoC FPGA family. The PolarFire SoC system requires various supply rails, each with its own specific DC and AC regulation tolerances and...
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