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AD9278BBCZ 数据表(PDF) 5 Page - Analog Devices |
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AD9278BBCZ 数据表(HTML) 5 Page - Analog Devices |
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5 / 45 page  AD9278 Data Sheet Rev. A | Page 4 of 44 Parameter1 Test Conditions/Comments Min Typ Max Unit Input-Referred Noise Voltage GAIN+ = 1.6 V, RFB = ∞ LNA gain = 15.6 dB 1.7 nV/√Hz LNA gain = 17.9 dB 1.5 nV/√Hz LNA gain = 21.3 dB 1.3 nV/√Hz Noise Figure GAIN+ = 1.6 V, RS = 50 Ω Active Termination Matched LNA gain = 15.6 dB, RFB = 200 Ω 9.2 dB LNA gain = 17.9 dB, RFB = 250 Ω 7.7 dB LNA gain = 21.3 dB, RFB = 350 Ω 6.3 dB Unterminated LNA gain = 15.6 dB, RFB = ∞ 6.7 dB LNA gain = 17.9 dB, RFB = ∞ 5.7 dB LNA gain = 21.3 dB, RFB = ∞ 4.9 dB Correlated Noise Ratio No signal, correlated/uncorrelated −30 dB Output Offset −35 +35 LSB Signal-to-Noise Ratio (SNR) fIN = 5 MHz at −10 dBFS, GAIN+ = 0 V, 65 dBFS fIN = 5 MHz at −1 dBFS, GAIN+ = 1.6 V 57 dBFS Harmonic Distortion Second Harmonic fIN = 5 MHz at −10 dBFS, GAIN+ = 0 V −70 dBc fIN = 5 MHz at −1 dBFS, GAIN+ = 1.6 V −70 dBc Third Harmonic fIN = 5 MHz at −10 dBFS, GAIN+ = 0 V −70 dBc fIN = 5 MHz at −1 dBFS, GAIN+ = 1.6 V −70 dBc Two-Tone Intermodulation (IMD3) fRF1 = 5.015 MHz, fRF2 = 5.020 MHz, ARF1 = 0 dB, ARF2 = −20 dB, GAIN+ = 1.6 VIMD3 relative to ARF2 −70 dBc Channel-to-Channel Crosstalk fIN1 = 5.0 MHz at −1 dBFS −60 dB Overrange condition2 −55 dB Channel-to-Channel Delay Variation Full TGC path, fIN = 5 MHz, GAIN+ = 0 V to 1.6 V 0.3 Degrees PGA Gain Differential input to differential output 21/24/27/30 dB GAIN ACCURACY 25°C Gain Law Conformance Error 0 < GAIN+ < 0.16 V 0.5 dB 0.16 V < GAIN+ < 1.44 V −1.6 +1.6 dB 1.44 V < GAIN+ < 1.6 V 0.5 dB Linear Gain Error GAIN+ = 0.8 V, normalized for ideal AAF loss −1.6 +1.6 dB Channel-to-Channel Matching 0.16 V < GAIN+ < 1.44 V 0.1 dB GAIN CONTROL INTERFACE Control Range Differential −0.8 +0.8 V Single-ended 0 1.6 V Gain Range GAIN+ = 0 V to 1.6 V 45 dB Scale Factor 28 dB/V Response Time 45 dB change 750 ns Gain+ Impedance Single-ended 10 MΩ Gain− Impedance Single-ended 70 kΩ CW DOPPLER MODE LO Frequency fLO = f4LO/4 1 10 MHz Phase Resolution Per channel 22.5 Degrees Output DC Bias (Single-Ended) CWI+, CWI−, CWQ+, CWQ− 1.5 V Output AC Current Range Per CWI+, CWI−, CWQ+, CWQ−, each channel enabled ±1.25 mA Transconductance (Differential) Demodulated IOUT/VIN, per CWI+, CWI−, CWQ+, CWQ− LNA gain = 15.6 dB 1.8 mA/V LNA gain = 17.9 dB 2.4 mA/V LNA gain = 21.3 dB 3.5 mA/V |
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