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LOG300 Datasheet(PDF) 17 Page - Texas Instruments |
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LOG300 Datasheet(HTML) 17 Page - Texas Instruments |
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17 / 32 page  6 Parameter Measurement Information + – Log Detector Low-Noise Amplifier Log_Out Freq_Out LNA_In Ref_Res Log_Inm 1.7V VBIAS Buffers × 2 × 2 VCC 2kΩ 1.7kΩ 40.5kΩ 1kΩ 200Ω 1.8kΩ LNA_En Freq_Supply AFE_En Offset_Cap CIN COffset_cap VCC CIN SMA100 Set Value of CIN based on i/p frequency and LNA_In impedance AGND 50Ω DGND DMM- 34461A AGND RF CF 56kΩ AC Cap LNA_Out Log_Inp AGND External BPF Figure 6-1. AFE (LNA + Log Detector) Slope Characterization + – Log Detector Low-Noise Amplifier Log_Out Freq_Out LNA_In Ref_Res Log_Inm 1.7V VBIAS Buffers × 2 × 2 VCC 2kΩ 1.7kΩ 40.5kΩ 1kΩ 200Ω 1.8kΩ LNA_En Freq_Supply AFE_En Offset_Cap CIN COffset_cap VCC DGND DMM- 34461A AGND RF CF 56kΩ LNA_Out Log_Inp AGND VCC CIN 10nF SMA100 Set Value of CIN based on source frequency and Log_Inp impedance AGND 50Ω RLOAD CLOAD RLOAD CLOAD Figure 6-2. Log Detector Slope Characterization + – Log Detector Low-Noise Amplifier Log_Out Freq_Out LNA_In Ref_Res Log_Inm 1.7V VBIAS Buffers × 2 × 2 VCC 2kΩ 1.7kΩ 40.5kΩ 1kΩ 200Ω 1.8kΩ LNA_En Freq_Supply AFE_En Offset_Cap CIN 10nF COffset_cap 470nF VCC DGND DMM- 34461A AGND RF CF 56kΩ 10nF LNA_Out Log_Inp AGND VCC Figure 6-3. Log Detector Minimum Output Voltage Measurement www.ti.com LOG300 SLOSEB7A – SEPTEMBER 2024 – REVISED OCTOBER 2024 Copyright © 2024 Texas Instruments Incorporated Submit Document Feedback 17 Product Folder Links: LOG300 |
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