发明名称 |
DIGITAL TUNING CIRCUIT OF GM-C FILTER |
摘要 |
A digital tuning circuit of a GM-C filter which decreases the electricity by using one GM cell is provided to tune Gm by using direct current without using clock signal in a gm tuning mode. A Gm cell circuit unit(200) operates in a Gm tuning mode. The Gm tuning is performed according to the Gm tuning coefficient. A D/A converter(300) varies a second reference voltage according to DAC tuning coefficient and converts the second reference voltage into a third voltage. An error detecting unit controls the capacitor tuning by using the first voltage between the third voltage and the first voltage in a capacitor tuning mode. The error detecting unit controls the Gm tuning by using the Gm tuning coefficient corresponding to a second voltage in Gm tuning mode.
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申请公布号 |
KR20090098263(A) |
申请公布日期 |
2009.09.17 |
申请号 |
KR20080023515 |
申请日期 |
2008.03.13 |
申请人 |
SAMSUNG ELECTRO-MECHANICS CO., LTD. |
发明人 |
PARK, KYOUNG SEOK |
分类号 |
H03J5/00 |
主分类号 |
H03J5/00 |
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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