The Vaishali VT98000 is a single-chip, integrated multiple Phase Locked Loop (PLL) clock synthesizer. The device uses an analog Phase Locked Loop (PLL) to accept a 27 MHz crystal input to produce multiple outputs. Selection pins are used to provide various outputs. Features •= •= •= •= 24.576 MHz for Firewire IEEE1394 or video digitizer 24.576 MHz / 28.224 .
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•= 24.576 MHz for Firewire IEEE1394 or video digitizer 24.576 MHz / 28.224 MHz for software or hardware modem 27 MHz buffered output clock 6.000MHz buffered output clock
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•= 18.432 MHz for audio processor 2kHz standby clock Zero ppm synthesis error in all clocks (except the 2 kHz standby clock) 5V tolerant inputs 20-pin, 150 mil SSOP (QSOP)
Figure 1. Functional Block Diagram
VDD1
VDD2
VDD3
VDD4
ROM Table 24.576/ 28.224 MHz
X2
Buffer
osc
27 MHz Crystal
Select 24/28 MHz
PLL Multiplier
X1
Buffer
24.576 MHz MODE 18.432MHz/ 6.000MHz
Divider /PD Buffer Buffer Buffer.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | VT98000Q |
Vaishali Semiconductor |
Multifrequency Synthesizer | |
2 | VT98000 |
Vaishali Semiconductor |
Multifrequency Synthesizer | |
3 | VT98001 |
Vaishali Semiconductor |
Multifrequency Synthesizer | |
4 | VT98001Q |
Vaishali Semiconductor |
Multifrequency Synthesizer | |
5 | VT98001QX |
Vaishali Semiconductor |
Multifrequency Synthesizer | |
6 | VT98501 |
Vaishali Semiconductor |
3.3V Low Phase Noise Clock Multiplier | |
7 | VT98501S1 |
Vaishali Semiconductor |
3.3V Low Phase Noise Clock Multiplier | |
8 | VT98501S1X |
Vaishali Semiconductor |
3.3V Low Phase Noise Clock Multiplier | |
9 | VT98521 |
Vaishali Semiconductor |
3.3V Clock Multiplier | |
10 | VT900 |
PerkinElmer Optoelectronics |
Photoconductive Cells and Analog Optoisolators | |
11 | VT900 |
Excelitas |
Photoconductive Cell | |
12 | VT90N1 |
Excelitas |
Photoconductive Cell |