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ADF7021BCPZ Scheda tecnica(PDF) 4 Page - Analog Devices |
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ADF7021BCPZ Scheda tecnica(HTML) 4 Page - Analog Devices |
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4 / 44 page  ADF7021 Preliminary Technical Data Rev. PrI | Page 4 of 44 SPECIFICATIONS VDD = 2.3 V to 3.6 V, GND = 0 V, TA = TMIN to TMAX, unless otherwise noted. Typical specifications are at VDD = 3 V, TA = 25°C. All measurements are performed with the EVAL-ADF7021DBx using PN9 data sequence, unless otherwise noted. Table 1. Parameter Min Typ Max Unit Test Conditions RF CHARACTERISTICS Frequency Ranges (Direct Output) 135 650 MHz External VCO inductor Frequency Ranges (Divide-by-2 Mode) 80 325 MHz External VCO inductor, divide-by-2 enabled Frequency Ranges (Direct Output) 862 940 MHz Internal VCO inductor Frequency Ranges (Divide-by-2 Mode) 431 470 MHz Internal VCO inductor, divide-by-2 enabled Phase Frequency Detector (PFD) Frequency RF/256 TBD MHz TRANSMISSION PARAMETERS Data Rate 0.05 25 kbps Frequency Shift Keying Frequency Deviation1 56 Hz Phase frequency detector (PFD) = 3.625 MHz 306 Hz PFD = 20 MHz Deviation Frequency Resolution 56 Hz PFD = 3.625 MHz Gaussian Filter BT 0.5 Raised Cosine Filter Alpha 0.5 Transmit Power 2 −20 +13 dBm VDD = 3.0 V, TA = 25°C Transmit Power Variation vs. Temperature ±1 dB From −40°C to +85°C Transmit Power Variation vs. VDD ±1 dB From 2.3 V to 3.6 V at 915 MHz, TA = 25°C Transmit Power Flatness ±1 dB From 902 MHz to 928 MHz, 3 V, TA = 25°C Programmable Step Size −20 dBm to +13 dBm 0.3125 dB Spurious Emissions Integer Boundary −55 dBc 50 kHz loop bandwidth (BW) Reference −65 dBc Harmonics Second Harmonic −27 dBc Unfiltered conductive Third Harmonic −21 dBc Unfiltered conductive All Other Harmonics −35 dBc Unfiltered conductive Optimum PA Load Impedance3 39 + j61 Ω FRF = 915 MHz 48 + j54 Ω FRF = 868 MHz 54 + j94 Ω FRF = 433 MHz RECEIVER PARAMETERS 2FSK Input Sensitivity Bit error rate (BER) = 10−3, FRF = 915 MHz, low noise amplifier (LNA) and power amplifier (PA) matched separately4 Sensitivity at 1 kbps −125 dBm FDEV = 1 kHz, high sensitivity mode5 LNA and Mixer, Input IP3 Enhanced Linearity Mode 6.8 dBm Pin = −20 dBm, 2 CW interferers Low Current Mode −3.2 dBm FRF = 915 MHz, F1 = FRF + 3 MHz High Sensitivity Mode −35 dBm F2 = FRF + 6 MHz, maximum gain Rx Spurious Emissions6 −57 dBm <1 GHz at antenna input −47 dBm >1 GHz at antenna input AFC Maximum Pull-In Range ±127.5 kHz Response Time 48 Bits Mod index = 0.875 Accuracy 1 kHz |
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