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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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ADF7021-VBCPZ Fiches technique(PDF) 8 Page - Analog Devices |
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ADF7021-VBCPZ Fiches technique(HTML) 8 Page - Analog Devices |
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8 / 60 page  ADF7021-V Rev. 0 | Page 8 of 60 Parameter Min Typ Max Unit Test Conditions/Comments IMAGE CHANNEL REJECTION Desired signal (2FSK, 9.6 kbps, ±4 kHz deviation) is 3 dB above the sensitivity point (BER = 10−2); modulated inter- ferer (2FSK, 9.6 kbps, ±4 kHz deviation) is placed at the image frequency of fRF − 200 kHz; the interferer level is increased until BER = 10−2 868 MHz 26/39 dB Uncalibrated/calibrated,3 VDD = 3.0 V, TA = 25°C 460 MHz 29/50 dB Uncalibrated/calibrated,3 VDD = 3.0 V, TA = 25°C BLOCKING Desired signal is 3 dB above the sensitivity point of −109.5 dBm; rejection is measured as the level of an unmodulated interferer to cause a BER of 10−2 for the desired signal; as per ETSI EN 300 220-1 ±1 MHz −29.5 dBm ±2 MHz −26.5 dBm ±5 MHz −26 dBm ±10 MHz −25.5 dBm SATURATION (MAXIMUM INPUT LEVEL) 12 dBm 2FSK mode, BER = 10−3 RECEIVED SIGNAL STRENGTH INDICATION (RSSI) Input Power Range4 −120 to −47 dBm Linearity ±2 dB Input power range = −100 dBm to −47 dBm Absolute Accuracy ±3 dB Input power range = −100 dBm to −47 dBm Response Time 333 μs As per AGC gain stage, AGC clock = 3 kHz AUTOMATIC FREQUENCY LOOP (AFC) Pull-In Range, Minimum 0.5 kHz Range is programmable in Register 10 (Bits[DB31:DB24]) Pull-In Range, Maximum 1.5 × IF_ FILTER_BW kHz Range is programmable in Register 10 (Bits[DB31:DB24]) Response Time 96 Bits Dependent on modulation index Accuracy 0.5 kHz Input power range = −100 dBm to +12 dBm Rx SPURIOUS EMISSIONS5 External 920 MHz VCO −54/−88 dBm <1 GHz at antenna input, unfiltered conductive/filtered conductive External 920 MHz VCO −45/−66 dBm >1 GHz at antenna input, unfiltered conductive/filtered conductive External 1738 MHz VCO −85/−85 dBm <1 GHz at antenna input, unfiltered conductive/filtered conductive External 1738 MHz VCO −39/−52 dBm >1 GHz at antenna input, unfiltered conductive/filtered conductive LNA INPUT IMPEDANCE RFIN to RFGND; refer to the AN-859 Application Note for other frequencies fRF = 915 MHz 24 − j60 Ω fRF = 868 MHz 26 − j63 Ω fRF = 470 MHz 58 − j124 Ω fRF = 450 MHz 63 − j129 Ω fRF = 426 MHz 68 − j134 Ω fRF = 315 MHz 96 − j160 Ω fRF = 175 MHz 178 − j190 Ω fRF = 169 MHz 182.5 − j194 Ω 1 Using Gaussian or raised cosine filtering. The frequency deviation should be chosen to ensure that the transmit-occupied signal bandwidth is within the receiver IF filter bandwidth. 2 4FSK fDEV is defined as the frequency spacing from the RF carrier to +fDEV or −fDEV. It is also equal to half the frequency spacing between adjacent symbols. 3 Calibration of the image rejection used an external RF source. 4 For received signal levels < −100 dBm, it is recommended that the RSSI readback value be averaged over a number of samples to improve RSSI accuracy at low input power. 5 Filtered conductive receive spurious emissions are measured on the EVAL-ADF7021-VDBxZ, which includes a T-stage harmonic filter (two inductors and one capacitor). |
Numéro de pièce similaire - ADF7021-VBCPZ |
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Description similaire - ADF7021-VBCPZ |
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