CDCVF2509APWR

Name: CDCVF2509APWR
Rating: 4.5 (10 reviews)

Clock Generator 20MHz to 175MHz-IN 175MHz-OUT 24-Pin TSSOP T/R

6,116 Effective Inventory

CDCVF2509APWR

Effective Inventory6,116

Clock Generator 20MHz to 175MHz-IN 175MHz-OUT 24-Pin TSSOP T/R

Manufacturer Part # : CDCVF2509APWR
Package/Case: TSSOP
Part Status : ACTIVE
Brand: Texas Instruments
Product Categories : Clock buffers
RoHS:

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CDCVF2509APWR DataSheet

Pricing (USD)

Quantity	Unit Price	Ext. Price
1	$9.805	$9.80
200	$3.795	$759.00
500	$3.661	$1,830.50
1000	$3.596	$3,596.00

These prices are subiect to market fluctuations and quote submission is required.

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Details

The CDCVF2509A 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 CDCVF2509A operates at a 3.3-V V_CC. It also provides integrated series-damping resistors that make it ideal for driving point-to-point loads.

One bank of five outputs and one bank of four outputs provide nine low-skew, low-jitter copies of CLK. Output signal duty cycles are adjusted to 50%, independent of the duty cycle at CLK. Each bank of outputs is enabled or disabled separately via the control (1G and 2G) inputs. When the G inputs are high, the outputs switch in phase and frequency with CLK; when the G inputs are low, the outputs are disabled to the logic-low state. The device automatically goes into power-down mode when no input signal (< 1 MHz) is applied to CLK; the outputs go into a low state.

Unlike many products containing PLLs, the CDCVF2509A does not require external RC networks. The loop filter for the PLL is included on-chip, minimizing component count, board space, and cost.

For application information, see application reports High Speed Distribution Design Techniques for CDC509/516/2509/2510/2516 (SLMA003) and Using CDC2509A/2510A PLL with Spread Spectrum Clocking (SSC) (SCAA039).

The CDCVF2509A is characterized for operation from 0°C to 85°C.

Because it is based on PLL circuitry, the CDCVF2509A 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, and following any changes to the PLL reference or feedback signals. The PLL can be bypassed by strapping AV_CC to ground to use as a simple clock buffer.

Key Features

Designed to Meet and Exceed PC133 SDRAM Registered DIMM Specification Rev. 1.1
Spread Spectrum Clock Compatible
Operating Frequency 20 MHz to 175 MHz
Static Phase Error Distribution at 66 MHz to
166 MHz Is ±125 ps
Jitter (cyc - cyc) at 60 MHz to 175 MHz Is
Typ = 65 ps
Advanced Deep Submicron Process Results in More Than 40% Lower Power
Consumption Versus Current Generation PC133 Devices
Auto Frequency Detection to Disable Device (Power-Down Mode)
Available in Plastic 24-Pin TSSOP
Phase-Lock Loop Clock Distribution for Synchronous DRAM Applications
Distributes One Clock Input to One Bank of Five and One Bank of Four Outputs
Separate Output Enable for Each Output Bank
External Feedback (FBIN) Terminal Is Used to Synchronize the Outputs to the Clock Input
25- On-Chip Series Damping Resistors
No External RC Network Required
Operates at 3.3 V
APPLICATIONS
- DRAM Applications
- PLL Based Clock Distributors
- Non-PLL Clock Buffer

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Product Status	Obsolete	Programmable	Not Verified
Type	PLL Clock Driver	PLL	Yes with Bypass
Input	LVTTL	Output	LVTTL
Ratio - Input:Output	2:10	Differential - Input:Output	No/No
Frequency - Max	175MHz	Divider/Multiplier	No/No
Voltage - Supply	3V ~ 3.6V	Operating Temperature	0°C ~ 85°C
Mounting Type	Surface Mount	Package / Case	TSSOP-24
Supplier Device Package	24-TSSOP	Base Product Number	CDCVF2509
Manufacturer	Texas Instruments	Product Category	Clock Drivers & Distribution
RoHS	Details	Series	CDCVF2509A
Minimum Operating Temperature	0 C	Maximum Operating Temperature	+ 85 C
Mounting Style	SMD/SMT	Brand	Texas Instruments
Product	Clock Drivers	Product Type	Clock Drivers & Distribution
Factory Pack Quantity	2000	Subcategory	Clock & Timer ICs
Unit Weight	0.003157 oz