| Allicdata Part #: | 9EX21531AKLF-ND |
| Manufacturer Part#: |
9EX21531AKLF |
| Price: | $ 0.00 |
| Product Category: | Integrated Circuits (ICs) |
| Manufacturer: | IDT, Integrated Device Technology Inc |
| Short Description: | IC FANOUT/BUFFER DIFF 64QFPN |
| More Detail: | N/A |
| DataSheet: |  9EX21531AKLF Datasheet/PDF |
| Quantity: | 1000 |
Specifications
| Ratio - Input:Output: | 2:15 |
| Base Part Number: | ICS9EX21531 |
| Supplier Device Package: | 64-VFQFPN (9x9) |
| Package / Case: | 64-VFQFN Exposed Pad |
| Mounting Type: | Surface Mount |
| Operating Temperature: | 0°C ~ 70°C |
| Voltage - Supply: | 3.135 V ~ 3.465 V |
| Frequency - Max: | 167MHz |
| Differential - Input:Output: | Yes/Yes |
| Series: | -- |
| Number of Circuits: | 1 |
| Output: | HCSL |
| Input: | Clock |
| Main Purpose: | PCI Express (PCIe) |
| PLL: | Yes |
| Part Status: | Obsolete |
| Packaging: | Tray |
Description
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9EX21531AKLF application field and working principle 9EX21531AKLF, which belongs to Clock/Timing - Application Specific, is a Frequency-Locked Loop (FLL) device for automotive applications. The main goal of FLL is to synthesize high frequency clocks from a source with low frequency. In a typical FLL system, an external clock source is used to drive a PLL (Phase Locked Loop). The output of the PLL is then fed to a frequency detector which compares the desired frequency against the output of the PLL. Based on this comparison, a control output is generated which updates the internal parameters of the PLL, so that it will always transition to the desired frequency. 9EX21531AKLF implements a special type of FLL known as Switched-Capacitor Frequency-Locked Loop (SCFLL).SCFLL is designed to reduce power consumption while maintaining a margin of accuracy better than that of traditional PLL-based designs. The main idea behind SCFLL is to dynamically adjust the capacitance associated with the oscillator circuitry, such that the desired frequency can be synthesized from the reference clock. In 9EX21531AKLF, this approach is further enhanced by introducing an additional level of control for the capacitor switching.The main application field for 9EX21531AKLF is automotive. It is used in various control systems such as engine timing, ABS and traction control, fuel injection systems, and other mechatronic systems. Its low power consumption and accuracy makes it ideal for these applications.The working principle of 9EX21531AKLF is based on the fact that by introducing an additional level of capacitor switching to the PLL loop, the time it takes for the frequency detector to compare the desired frequency and the output of the PLL is greatly reduced. This makes it possible to get a higher frequency output with less power consumption.In the first stage of the circuit, an external clock source is used to drive an oscillator circuit. This oscillator circuit then generates an output frequency which is fed into a frequency detector. This frequency detector compares the frequency of the output of the oscillator circuit with the desired frequency and provides a feedback control signal which is then used to update the internal capacitor switching configuration of the oscillator circuit. With this configuration, the frequency detector can detect the changes in the oscillator frequency more quickly, allowing for faster correction of the output frequency.The 9EX21531AKLF device is capable of synthesizing output signals of up to 200MHz with extremely accurate resolution and low power consumption. This makes it ideal for applications requiring a precise output frequency.Overall, the 9EX21531AKLF device belongs to the Clock/Timing - Application Specific category, and is specifically designed for automotive applications. Its precise and low power consumption design makes it well suited for applications requiring precise frequency synthesis.
The specific data is subject to PDF, and the above content is for reference
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