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AFE7900IALK Datasheet(PDF) 48 Page - Texas Instruments |
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AFE7900IALK Datasheet(HTML) 48 Page - Texas Instruments |
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48 / 157 page  6.12.3 RX Typical Characteristics 1.75GHz to 1.9GHz Typical values at TA = +25°C, ADC Sampling Rate = 2949.12 GHz. Default conditions: output sample rate = 491.52MSPS (decimate by 6), PLL clock mode with fREF = 491.52MHz, AIN = –3 dBFS, DSA setting = 4 dB. Output Frequency (MHz) 1650 1750 1850 1950 2050 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 DSA=4dB DSA=6dB DSA=8dB DSA=10dB DSA=12dB DSA=14dB With 1.8 GHz matching, normalized to 1.75 GHz Figure 6-81. RX In-Band Gain Flatness, fIN = 1750 MHz Temperature (qC) -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 -0.5 -0.4 -0.3 -0.2 -0.1 0 0.1 0.2 0.3 1RX 2RX 3RX 4RX With 1.8 GHz matching, normalized to fullscale at 25°C for each channel Figure 6-82. RX Input Fullscale vs Temperature and Channel at 1.75 GHz Temperature (qC) -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 -20 -15 -10 -5 0 5 10 15 20 25 1RX 2RX 3RX 4RX With 2.6 GHz matching, normalized to phase at 25°C Figure 6-83. RX Input Phase vs Temperature and DSA at fIN = 1.75 GHz DSA (dB) 0 5 10 15 20 25 -0.3 -0.25 -0.2 -0.15 -0.1 -0.05 0 0.05 0.1 0.15 1RX 2RX 3RX 4RX With 1.8 GHz matching Differential Amplitude Error = PIN(DSA Setting – 1) – PIN(DSA Setting) + 1 Figure 6-84. RX Uncalibrated Differential Amplitude Error vs DSA Setting at 1.75 GHz DSA (dB) 0 5 10 15 20 25 -0.025 -0.02 -0.015 -0.01 -0.005 0 0.005 0.01 0.015 0.02 0.025 0.03 1RX 2RX 3RX 4RX With 1.8 GHz matching Differential Amplitude Error = PIN(DSA Setting – 1) – PIN(DSA Setting) + 1 Figure 6-85. RX Calibrated Differential Amplitude Error vs DSA Setting at 1.75 GHz DSA (dB) 0 5 10 15 20 25 -1.3 -1.1 -0.9 -0.7 -0.5 -0.3 -0.1 0.1 1RX 2RX 3RX 4RX With 1.8 GHz matching Integrated Amplitude Error = PIN(DSA Setting) – PIN(DSA Setting = 0) + (DSA Setting) Figure 6-86. RX Uncalibrated Integrated Amplitude Error vs DSA Setting at 1.75 GHz AFE7900 SBASA44A – AUGUST 2021 – REVISED MARCH 2022 www.ti.com 48 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: AFE7900 |
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