PLL1705 Texas instruments

PLL1705

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PLL1705

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Описание

The PLL1705 are low cost, phase-locked loop (PLL) multiclock generators. The PLL1705 and PLL1706 can generate four system clocks from a 27-MHz reference input frequency. The clock outputs of the PLL1705 can be controlled by sampling frequency-control pins and those of the PLL1706 can be controlled through serial-mode control pins. The device gives customers both cost and space savings by eliminating external components and enables customers to achieve the very low-jitter performance needed for high performance audio DACs and/or ADCs. The PLL1705 and PLL1706 are ideal for MPEG-2 applications which use a 27-MHz master clock such as DVD players, DVD add-on cards for multimedia PCs, digital HDTV systems, and set-top boxes.

27-MHz Master Clock Input
Generated Audio System Clock:
- SCKO0: 768 f_S (f_S = 44.1 kHz)
- SCKO1: 384 f_S, 768 f_S (f_S = 44.1 kHz)
- SCKO2: 256 f_S (f_S = 32, 44.1, 48, 64, 88.2, 96 kHz)
- SCKO3: 384 f_S (f_S = 32, 44.1, 48, 64, 88.2, 96 kHz)
Zero PPM Error Output Clocks
Low Clock Jitter: 50 ps (Typical)
Multiple Sampling Frequencies:
- f_S = 32, 44.1, 48, 64, 88.2, 96 kHz
3.3-V Single Power Supply
PLL1705: Parallel Control
PLL1706: Serial Control
Package: 20-Pin SSOP (150 mil), Lead-Free Product
APPLICATIONS
- DVD Players
- DVD Add-On Cards for Multimedia PCs
- Digital HDTV Systems
- Set-Top Boxes

The PLL1705 and PLL1706 use the same die and they are electrically identical except for mode control.

Function	Clock generator
Number of outputs	4
Output frequency (max) (MHz)	36.864
Core supply voltage (V)	3.3
Output supply voltage (V)	3.3
Input type	LVCMOS
Output type	LVCMOS
Operating temperature range (°C)	-25 to 85
Rating	Catalog