| 一种具有精确增益控制的CMOS可编程增益放大器 |
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| 引用本文： | 方飞,林楠,方昊,洪志良.一种具有精确增益控制的CMOS可编程增益放大器[J].固体电子学研究与进展,2011,31(5):484-488. |
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| 作者姓名： | 方飞 林楠 方昊 洪志良 |
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| 作者单位： | 1. 复旦大学专用集成电路与系统国家重点实验室,上海,201203
2. LSI Company,美国 |
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| 摘 要： | 采用0.13μm RF CMOS工艺,设计了一款具有精确增益步长控制的宽带可编程增益放大器.在传统电阻网络衰减器的基础上,提出了一种新的增益控制方法.该方法采用两个互相重叠的反馈环路,通过改变环路中跨导的比值以实现精细的增益步长控制.测试结果表明,当电源电压为1.2V时,功耗为24 mW,-3 dB带宽为600MHz....
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| 关 键 词： | 可编程增益放大器 衰减器 精确增益控制 |
A CMOS Programmable Gain Amplifier with Accurate Gain Control |
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| FANG Fei,LIN Nan,FANG Hao,HONG Zhiliang.A CMOS Programmable Gain Amplifier with Accurate Gain Control[J].Research & Progress of Solid State Electronics,2011,31(5):484-488. |
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| Authors: | FANG Fei LIN Nan FANG Hao HONG Zhiliang |
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| Affiliation: | FANG Fei1 LIN Nan1 FANG Hao2 HONG Zhiliang1(1ASIC & System State Key Laboratory,Fudan University,Shanghai,201203,CHN)(2 LSI Company,USA) |
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| Abstract: | A CMOS programmable gain amplifier(PGA) with accurate gain control is realized in 0.13 μm RF CMOS process.Based on the conventional resistive attenuator,a new gain control method is proposed here.Using two overlapped feedback loops,the accurate gain control is achieved by changing the ratio of trans-conductance.Measurement results show that,with a supply voltage of 1.2 V,the power consumption is 24 mW and the-3 dB bandwidth is 600 MHz.In the gain range of 24 dB,0.08 dB gain accuracy can be obtained,the IIP3 for 0 dB and 24 dB is 18.8 dBm and-5.57 dBm respectively. |
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| Keywords: | programmable gain amplifier attenuator accurate gain control |
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