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Hitachi Semiconductor |
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HD151TS302RP
Spread Spectrum Clock for EMI Solution
ADE-205-655A (Z)
Preliminary
Rev. 1
Sep. 2001
Description
The HD151TS302 is a high-performance Spread Spectrum Clock modulator. It is suitable for low EMI
solution.
Features
• Supports 10 MHz to 60 MHz operation. (Designed for XIN = 24 MHz and 48 MHz)
• 1 copy of clock out with spread spectrum modulation @3.3 V
• 1 copy of reference clock @3.3 V
• Programmable spread spectrum modulation (–0.5%, –1.0%, –3.0% down spread modulation and spread
spectrum disable mode.)
• SOP–8pin
• Pin to pin compatible with HD151TS301RP
Key Specifications
• Supply voltages : VDD = 3.3 V±0.165 V
• Ta = 0 to 70°C operating range
• Clock output duty cycle = 50±5%
• Cycle to cycle jitter = ±250 ps typ.
HD151TS302RP
Block Diagram
VDD
XIN
XOUT
SEL0
SEL1
OSC 1/m
Synthesizer
1/n
SSC Modulator
Mode Control
Pin Arrangement
GND
CLKOUT
SSCCLKOUT
SSCCLKOUT 1
VDD 2
GND 3
XIN 4
8 SEL1
7 CLKOUT
6 SEL0
5 XOUT
(Top view)
Rev.1, Sep. 2001, page 2 of 9
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