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Product Detailed Parameters
- Description：IC CLOCK GENERATOR PCIE 8TSSOP
- Series：-
- PLL：Yes
- Mfr：Skyworks Solutions Inc.
- Main Purpose：PCI Express (PCIe)
- Input：Clock, Crystal
- Output：HCSL
- Number of Circuits：1
- Ratio - Input:Output：1:01
- Differential - Input:Output：No/Yes
- Frequency - Max：100MHz
- Voltage - Supply：2.97V ~ 3.63V
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：8-TSSOP (0.173", 4.40mm Width)
- Supplier Device Package：8-TSSOP
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Overview
The SI52111-A1-GTR is a single-output PCIe Gen 1 clock generator manufactured by Skyworks Solutions Inc. It generates one compliant differential HCSL output from a 25 MHz crystal or clock input, supporting frequencies up to 100 MHz. The device operates on a 3.3 V supply with a typical current of 13 mA and functions within an ambient temperature range of –40 °C to +85 °C. Unlike the A2 variant, the A1 model does not support spread spectrum outputs. It is housed in an 8-pin TSSOP package (MO-153AA) and supplied in tape and reel format.
Feature Summary
- PCIe Gen 1 compliant single differential HCSL output buffer
- Supports Serial-ATA (SATA) at 100 MHz without termination resistors
- Accepts 25 MHz crystal or clock input
- No spread spectrum capability
Applications
- Network Attached Storage
- Multi-function Printer
- Wireless Access Point
- Routers
Procurement Notes
Verify component authenticity through authorized distributors. Confirm the ordering suffix 'GTR' corresponds to the 8-pin TSSOP package and tape and reel packaging. Ensure design compatibility with the specified 3.3 V operating voltage and extended temperature range requirements.
Selection Notes
Select this part for applications requiring a single PCIe Gen 1 clock source without spread spectrum modulation. For designs needing EMI reduction via frequency spreading, consider the SI52111-A2 series instead. Verify that the 8-pin TSSOP footprint fits the PCB layout constraints.
Part Context
This component belongs to the Si52111 family of PCI-Express Gen 1 clock generators. It serves as a low-power alternative to larger packages, offering a compact solution for embedded systems. The A1 designation specifically indicates the absence of spread spectrum features compared to the A2 version.
Replacement Considerations
SI52111-A1-GM2: Identical electrical specifications but packaged in 10-pin TDFN.
FAQ
Does the SI52111-A1 support spread spectrum?
No, the SI52111-A1 does not support spread spectrum outputs. The SI52111-A2 variant supports 0.5% down spread.
What is the maximum output frequency?
The maximum output frequency is 100 MHz.
Is termination resistance required for the output?
No, the device provides a low power HCSL differential output buffer that does not require external termination resistors.
