发明名称 |
Ultra low power servo-controlled single clock ramp generator with amplitude independent to clock frequency |
摘要 |
A low power servo-controlled single clock ramp generator (100) includes a fast switched comparator (102), charge pump (110) and voltage-to-current converter (120) connected to provide a feedback control mechanism under control of a pulse comparison clock signal (pulse_comp) and a reset pulse clock signal (rst_pulse) that are generated from a single input clock signal (clkin) so that there are well defined time intervals between pulses in the pulse comparison clock signal and the reset pulse clock signal, thereby providing a ramp signal (Vramp_out) having a stable, frequency-independent amplitude that is not limited by the reference voltage.
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申请公布号 |
US7746129(B2) |
申请公布日期 |
2010.06.29 |
申请号 |
US20080098113 |
申请日期 |
2008.04.04 |
申请人 |
FREESCALE SEMICONDUCTOR, INC. |
发明人 |
CHOI JUNG HYUN;PORRAS FERNANDO CHAVEZ |
分类号 |
H03K4/06 |
主分类号 |
H03K4/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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