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（133）
2。7 300MHz～450MHz ASK 接收器芯片U3745BM 的原理与应用电路设计······························ （136）
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2。7。1 概述······························································································································· （136）
2。7。2 主要性能指标················································································································ （136）
2。7。3 芯片封装与引脚功能···································································································· （137）
2。7。4 内部结构与工作原理···································································································· （137）
2。7。5 应用电路设计················································································································ （144）
第3 章 射频收发器芯片原理与应用电路设计································································· （153）
3。1 300MHz～500MHz 无线收发芯片MICRF501 的原理与应用电路设计·································· （153）
3。1。1 概述······························································································································· （153）
3。1。2 主要性能指标················································································································ （153）
3。1。3 芯片封装与引脚功能···································································································· （154）
3。1。4 内部结构与工作原理···································································································· （155）
3。1。5 应用电路设计················································································································ （156）
3。2 300MHz～930MHz FSK/FM/ASK 收发器芯片 TH7120 的原理与应用电路设计·················· （168）
3。2。1 概述······························································································································· （168）
3。2。2 主要技术指标················································································································ （169）
3。2。3 芯片封装与引脚功能···································································································· （169）
3。2。4 内部结构与工作原理···································································································· （170）
3。2。5 应用电路设计················································································································ （175）
3。3 OOK/ASK 868。35 MHz 收发器芯片TR1001 的原理与应用电路设计···································· （182）
3。3。1 概述······························································································································· （182）
3。3。2 主要技术指标················································································································ （183）
3。3。3 芯片封装及引脚功能···························