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ADC34RF72 датащи(PDF) 21 Page - Texas Instruments |
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ADC34RF72 датащи(HTML) 21 Page - Texas Instruments |
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21 / 74 page ![]() Input Frequency (GHz) 0.1 1 4 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 Figure 7-4. Input Bandwidth Plot ADC Balun 0.1u 0.1u 60 60 1p 1p 0.1u 2n 2n 125 Figure 7-5. External Matching Network 7.3.1.2 Background Calibration The ADC32RF72 uses internal background calibration to maintain a high AC performance over temperature. The calibration is performed periodically and does not require any user control or input signal, and so on. During calibration, small changes to the signal offset are observed (approximately 30LSB). This calibration can be frozen to avoid any disturbance during measurements using SPI writes or GPIO control. Ambient Temperature (degC) -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 74 75 76 SNRflat w/o Cal SNRflat with Cal FIN = 100MHz, AIN = -1dBFS, Calibration at 25°C Figure 7-6. SNRflat vs Temperature vs Calibration www.ti.com ADC32RF72 SBASAL2 – NOVEMBER 2025 Copyright © 2025 Texas Instruments Incorporated Submit Document Feedback 21 Product Folder Links: ADC32RF72 |
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