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LTC6948 Datasheet(PDF) 4 Page - Analog Devices |
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LTC6948 Datasheet(HTML) 4 Page - Analog Devices |
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4 / 32 page  LTC5594 4 Rev A For more information www.analog.com ELECTRICAL CHARACTERISTICS T C = 25°C, VCC = 5V, OVDD = EN = CSB = 3.3V, SDI = SCK = AMPD = 0V, VCM = 0.9V, PIF = 1.5dBm (–1.5dBm/tone for 2-tone tests), PLO = 6dBm, all registers at default values, and all parameters listed for combined performance of demodulator and amplifier unless otherwise noted. (Notes 2, 3, 6, 9, 21, 24) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS HD2 2nd Order Harmonic Distortion Unadjusted/Adjusted fRF = 400MHz fRF = 1900MHz fRF = 3500MHz fRF = 5800MHz fRF = 7200MHz fRF = 8500MHz –65 –64 –60 –56 –50 –46 dBc dBc dBc dBc dBc dBc HD3 3rd Order Harmonic Distortion Unadjusted/Adjusted fRF = 400MHz fRF = 1900MHz fRF = 3500MHz fRF = 5800MHz fRF = 7200MHz fRF = 8500MHz –82 –80 –76 –70 –65 –68 dBc dBc dBc dBc dBc dBc P1dB Output 1dB Compression Point fRF = 400MHz fRF = 1900MHz fRF = 3500MHz fRF = 5800MHz fRF = 7200MHz fRF = 8500MHz 13.2 13.2 13.2 13.2 13.2 13.2 dBm dBm dBm dBm dBm dBm DCOFFSET DC Offset, Unadjusted (Note 13) fRF = 400MHz fRF = 1900MHz fRF = 3500MHz fRF = 5800MHz fRF = 7200MHz fRF = 8500MHz 19 17 17 –26 –63 –19 mV mV mV mV mV mV DCOFF(RANGE) DC Offset Adjustment Range DCOI, DCOQ = 0x00 to 0xFF –75 to 75 mV DCOFF(STEP) DC Offset Step Size 640 µV ∆G I/Q Gain Mismatch, Unadjusted fRF = 400MHz fRF = 1900MHz fRF = 3500MHz fRF = 5800MHz fRF = 7200MHz fRF = 8500MHz 0.05 0.05 0.06 0.06 0.07 0.44 dB dB dB dB dB dB ∆G(RANGE) I/Q Gain Mismatch Adjustment Range GERR = 0x00 to 0x3F –0.5 to 0.5 dB ∆G(STEP) I/Q Gain Mismatch Adjustment Step Size 0.016 dB ∆φ I/Q Phase Mismatch, Unadjusted fRF = 400MHz fRF = 1900MHz fRF = 3500MHz fRF = 5800MHz fRF = 7200MHz fRF = 8500MHz 0.9 1.1 3.1 1.6 1.1 1.0 Deg Deg Deg Deg Deg Deg ∆φ(RANGE) I/Q Phase Mismatch Adjustment Range PHA = 0x000 to 0x1FF –2.5 to 2.5 Deg ∆φ(STEP) I/Q Phase Mismatch Adjustment Step Size 0.05 Deg IRR Image Rejection Ratio Unadjusted/Adjusted (Note 10) fRF = 400MHz fRF = 1900MHz fRF = 3500MHz fRF = 5800MHz fRF = 7200MHz fRF = 8500MHz 43/70 42/65 33/65 37/60 40/60 33/60 dB dB dB dB dB dB |
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