Features
- Two 0.7V current mode differential HCSL output pairs
- Crystal oscillator interface: 25MHz
- Output frequency: 100MHz
- RMS phase jitter @ 100MHz (12kHz - 20MHz): 1.23ps (typical)
- Cycle-to-cycle jitter: 25ps (maximum)
- I2C support with readback capabilities up to 400kHz
- Spread Spectrum for electromagnetic interference (EMI) reduction
- 3.3V operating supply mode
- -40°C to 85°C ambient operating temperature
- Available in a lead-free (RoHS 6) package
- PCI Express Gen 1, 2 and 3 jitter compliant
841S102I - Block Diagram
Description
The 841S102I is a PLL-based clock synthesizer specifically designed for PCI_Express™ Clock applications. This device generates a 100MHz differential HCSL clock from an input reference of 25MHz. The input reference may be derived from an external source or by the addition of a 25MHz crystal to the on-chip crystal oscillator. An external reference is applied to the XTAL_IN pin with the XTAL_OUT pin left floating.The device offers spread spectrum clock output for reduced EMI applications. An I2C bus interface is used to enable or disable spread spectrum operation as well as select either a down spread value of -0.35% or -0.5%.The 841S102I is available in a lead-free package.
Parameters
| Attributes | Value |
|---|---|
| Diff. Outputs | 2 |
| Diff. Output Signaling | HCSL |
| Output Freq Range (MHz) | 100 - 100 |
| Supply Voltage (V) | 3.3 - 3.3 |
| Output Type | HCSL |
| Package Area (mm²) | 28.6 |
| Battery Backup | No |
| Battery Seal | No |
| CPU Supervisory Function POR | No |
| Crystal Frequency Trimming | No |
| Frequency Out Pin | No |
| Inputs (#) | 1 |
| Input Freq (MHz) | 25 - 25 |
| Input Type | Crystal |
| Output Banks (#) | 1 |
| Core Voltage (V) | 3.3 |
| Output Voltage (V) | 3.3 |
| Product Category | PCI Express Clocks |
Package Options
| Pkg. Type | Pkg. Dimensions (mm) | Lead Count (#) | Pitch (mm) |
|---|---|---|---|
| TSSOP | 6.5 x 4.4 x 1.0 | 20 | 0.65 |
| Part Number | Status | Samples | Stock | Package | Budgetary Price (USD) | Lead Count (#) | Carrier Type | Moisture Sensitivity Level (MSL) | Qty. per Reel (#) | Qty. per Carrier (#) | Pb (Lead) Free | Pb Free Category | Temp. Range (°C) | Country of Assembly | Country of Wafer Fabrication |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 841S102EGILF | Active | Available | Out of Stock | TSSOP | 1ku | $6.24 | 20# | Tube | 1 | 0 | 74# | Yes | e3 Sn | -40 to 85°C | TAIWAN | AUSTRIA |
| 841S102EGILFT | Active | N/A | Out of Stock | TSSOP | 1ku | $6.24 | 20# | Reel | 1 | 3000# | 0 | Yes | e3 Sn | -40 to 85°C | TAIWAN | AUSTRIA |
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- Product Change NoticePDF 361 KB 7WDXRDKU4E7E-5-55130 Mar 24, 2013
- Product Change NoticePDF 611 KB 7WDXRDKU4E7E-5-60321 Apr 14, 2016
- Product Change NoticePDF 611 KB 7WDXRDKU4E7E-5-59927 Feb 15, 2016
- Product Change NoticePDF 596 KB 7WDXRDKU4E7E-5-59884 Jan 28, 2016
- Product Change NoticePDF 544 KB 7WDXRDKU4E7E-5-59710 Nov 13, 2015
- Product Change NoticePDF 95 KB 7WDXRDKU4E7E-5-59609 Oct 22, 2015
- Product Change NoticePDF 50 KB 7WDXRDKU4E7E-5-59245 Jul 21, 2015
- Product Change NoticePDF 439 KB 7WDXRDKU4E7E-5-56251 Oct 11, 2013
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- Product Change NoticePDF 611 KB 7WDXRDKU4E7E-5-60321 Apr 14, 2016
- Product Change NoticePDF 611 KB 7WDXRDKU4E7E-5-59927 Feb 15, 2016
- Product Change NoticePDF 596 KB 7WDXRDKU4E7E-5-59884 Jan 28, 2016
- Product Change NoticePDF 544 KB 7WDXRDKU4E7E-5-59710 Nov 13, 2015
- Product Change NoticePDF 95 KB 7WDXRDKU4E7E-5-59609 Oct 22, 2015View More (8)
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This is the first video in our PCIe series. In this video, we define PCIe architectures, focusing on common and separate clock architectures. Watch the rest of the video series below where Ron will cover the impact of different timing architectures.
In this episode, Ron Wade from IDT (acquired by Renesas) explains PCIe common clocking and its impact on timing solutions. Learn about using a single clock source, fan-out buffers, and the considerations for spread spectrum and non-spread spectrum clocking in PCIe systems.
In this video, we explore PCIe with separate reference clocks and the effects of clock selection. Learn how separate reference clocks work and their impact on system performance and stability.
This video provides a high-level overview of Separate Reference Clock with Independent Spread (SRIS) architectures for PCI Express systems, additional performance requirements that this clocking architecture imposes on the reference clocks, and some system implications encountered trying to implement the architecture.
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