SM8721AB
SM8721AB is 3-PLL Multi-Output Clock Generator manufactured by NPC.
OVERVIEW
The SM8721AB is a clock generator IC with 3 built-in PLLs. It can simultaneously generate and output 3 clocks with different frequency derived from a single master clock. The generated output clock frequency can be switched using control pins and one clock can be turned ON/OFF (CLK2). The master clock can be selected from a low-cost 14.31818MHz or small 28.636363MHz crystal. The device is available in pact 20-pin QFN packages, making it ideal for portable digital still cameras and other applications which require multiple clocks.
FEATURES
PINOUT
(Top view)
VDD1 VDD1 VSS1 CLK2ON CLK1
15 14 13 12 11
3.0 to 3.6V supply voltage Crystal oscillator circuit built-in 14.318182/28.636363MHz master clock (internal PLL reference clock) Generated clocks
- 14.318182/17.734450MHz (REF_CLK)
- 71.877274/90.314686/96.016044 /114.54546MHz (CLK1)
- 48.008022/96.016044MHz (CLK2) Low jitter output
- 30ps typ. (1-sigma)
- 180ps typ. (peak-to-peak) Output load
- 15p F 20-pin QFN package (Pb free)
CLK2 VSS2 VDD2 REF_CLK TEST2
16 17 18 19 20 1 2 3 4 5
10 9 8 7 6
FS1 FS2 FS3 XTAL_SEL TEST1
APPLICATIONS
PACKAGE DIMENSIONS
(Unit: mm) Weight: 0.037g
4.20 ± 0.20
Digital still cameras
ORDERING INFORMATION
Device SM8721AB Package
4.20 ± 0.20 4.00 ± 0.10 4.00 ± 0.10
15 16 11
20-pin QFN
5 0.50
VDD3 VDD3 VSS3 XTI...
