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CDC421250 Folha de dados(PDF) 2 Page - Texas Instruments |
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CDC421250 Folha de dados(HTML) 2 Page - Texas Instruments |
2 / 18 page www.ti.com Crystal Oscillator Feedback Divider Output Divider PFD/ ChargePump Prescaler LoopFilter XIN1 XIN2 B0230-01 VCO PACKAGE (QFN-24) NC V CC 15 14 13 RGEPACKAGE (TOP VIEW) CDC421xxx NC 1 2 3 NC 4 NC 5 NC 18 NC 17 V CC 16 NC NC CE NC P0024-06 6 CDC421xxx SLAS540 – APRIL 2007 Figure 1. High-Level Block Diagram of the CDC421xxx The CDC421xxx is packaged in a QFN-24 terminal package. The QFN package footprint is shown. Terminal locations and numbers are shown in Figure 2. Figure 2. Pinout of the CDC421xxx QFN-24 Package The terminal functions table shows the terminal descriptions for the CDC421xxx QFN-24 package. Table 1. TERMINAL FUNCTIONS TERMINAL ESD TYPE DESCRIPTION PROTECTION NAME NO. VCC 16, 17 Power Y 3.3V power supply GND 8, 9 GND Y Ground In crystal input mode, connect XIN1 to one end of the crystal and XIN2 to the XIN 1 21 I Y other end of the crystal. In LVCMOS single-ended driven mode, XIN1 (pin 21) acts XIN 2 22 I N as input reference and XIN2 should connect to GND. 2 Submit Documentation Feedback |
Nº de peça semelhante - CDC421250 |
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Descrição semelhante - CDC421250 |
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