器件名称: ABE0102
功能描述: Low EMI Spread Spectrum Multiplier Clock
文件大小: 216.16KB 共5页
简 介:ABE0101/02/04/06
Low EMI Spread Spectrum Multiplier Clock
FEATURES
Spread Spectrum Clock Generator with selectable multiplier from 1x to 6x outputs. Output frequency ranges: 10MHz to 180MHz. Accepts input from crystal or reference clock. Selectable Center, Down or Asymmetric Spread Modulation. Selectable Modulation rate. TTL/CMOS compatible outputs. 3.3V Operating Voltage. Low short term jitter. Available in 8-Pin 150mil SOIC.
PIN CONFIGURATION
XIN/FIN XOUT/SD*^ SC0^ SC1^ 1 8 VDD SC2^ FOUT GND
ABE010x
2 3 4
7 6 5
XIN/FIN = 10 ~ 30 MHz
Note: ^: Internal pull-up resistor (120k for SD, 30 k for SC0-SC2). *: The value of SD is latched upon power-up. The internal pull-up resistor results in a default high value when no pull-down resistor is connected to this pin (recommended external pull-down resistor of 27 k ).
DESCRIPTION
The ABE0101/02/04/06 are Spread Spectrum Clock Generators designed for the purpose of reducing EMI in high-speed digital systems. Any output frequency from 10 to 180MHz can be selected by programming 6 multiplier modes. The device is designed to operate from a crystal or reference clock input and provides 1x to 6x modulated clock outputs.
OUTPUT CLOCK (FOUT) SELECTION
SD
1 1 0 1 0 1 0 1 0 1 0 1 0 1
SC2
0 0 0 0 0 0 0 1 1 1 1 1 1 1
SC1
0 0 0 1 1 1 1 0 0 0 0 1 1 1
SC0
0 1 1 0 0 1 1 0 0 1 1 0 0 1
FOUT (01)
X1 X1 X1 X1 X1 X1 X1 X1 X1 X1 X1 X1 X1 X1
FOUT (02)
X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2
FOUT (04)
X4 X4 X4 X4 X4 X4 X4 X4 X4 X4 X……
