Texas Instruments CDC2510 Data Sheet / Manual
Summary
The CDC2510 is a high-performance, 3.3V Phase-Lock Loop (PLL) clock driver engineered for synchronous DRAM applications requiring extremely low skew and jitter. This component generates ten precise, low-jitter copies of the clock signal while eliminating the need for external RC networks through integrated damping resistors and on-chip loop filters. The manual provides comprehensive coverage of its architecture, pin functions (including CLK, FBIN, and the control enable G), and PLL operation. It is essential tooling for electronics designers building complex systems where precise, synchronized clock distribution to multiple DRAM banks is critical.
Page 1 Text Content
查询CDC2510供应商 CDC2510
3.3-V PHASE-LOCK LOOP CLOCK DRIVER
SCAS597 – DECEMBER 1997
Phase-Lock Loop Clock Distribution for PW PACKAGE (TOP VIEW)
Synchronous DRAM Applications Distributes One Clock Input to One Bank of
AGND CLK
Ten Outputs
VCC AVCC
Single Output Enable Terminal Controls All
1Y0 VCC
Ten Outputs
External Feedback (FBIN) Pin Is Used to 1Y2 1Y8 Synchronize the Outputs to the Clock Input GND GND
On-Chip Series Damping Resistors GND GND 1Y3 1Y7
No External RC Network Required
Operates at 3.3-V VCC
VCC 1Y5
Packaged in Plastic 24-Pin Thin Shrink
Small-Outline Package
FBOUT FBIN
description The CDC2510 is a high-performance, low-skew, low-jitter, phase-lock loop (PLL) clock driver. It uses a PLL to precisely align, in both frequency and phase, the feedback (FBOUT) output to the clock (CLK) input signal. It is specifically designed for use with synchronous DRAMs. The CDC2510 operates at 3.3-V VCC and provides integrated series-damping resistors that make it ideal for driving point-to-point loads. One bank of ten outputs provide ten low-skew, low-jitter copies of CLK. Output signal duty cycles are adjusted to 50 percent, independent of the duty cycle at CLK. All outputs can be enabled or disabled via a single output enable input. When the G input is high, the outputs switch in phase and frequency with CLK; when the G input is low, the outputs are disabled to the logic-low state. Unlike many products containing PLLs, the CDC2510 does not require external RC networks. The loop filter for the PLL is included on-chip, minimizing component count, board space, and cost. Because it is based on PLL circuitry, the CDC2510 requires a stabilization time to achieve phase lock of the feedback signal to the reference signal. This stabilization time is required, following power up and application of a fixed-frequency, fixed-phase signal at CLK, as well as following any changes to the PLL reference or feedback signals. The PLL can be bypassed for test purposes by strapping AVCC to ground. The CDC2510 is characterized for operation from 0°C to 70°C.
FUNCTION TABLE
INPUTS OUTPUTS 1Y
CLK FBOUT
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright 1997, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
1POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Page Summary Contents For Texas Instruments CDC2510 Data Sheet / Manual
Manual Details
| Brand | Texas Instruments |
|---|---|
| Pages | 9 |
| File Size | 117.16 KB |
| Published | June 21, 2026 |
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Frequently Asked Questions
How many clock outputs does the CDC2510 provide?
The device provides one bank of ten low-skew, low-jitter copies of the CLK signal.
Does this driver require an external RC network?
No, it does not require external RC networks because the loop filter for the PLL is included on-chip.
What must I do after applying power to use the device?
Following power up and the application of a fixed-frequency CLK signal, a stabilization time is required for the PLL.
How can I bypass the PLL circuit for testing purposes?
The PLL can be bypassed by strapping the AV pin to ground.