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AD9271 Arkusz danych(PDF) 5 Page - Analog Devices |
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AD9271 Arkusz danych(HTML) 5 Page - Analog Devices |
5 / 61 page AD9271 Rev. B | Page 4 of 60 SPECIFICATIONS AC SPECIFICATIONS AVDD = 1.8 V, DRVDD = 1.8 V, CWVDD = 3.3 V, 1.0 V internal ADC reference, fIN = 5 MHz, RS = 50 Ω, LNA gain = 15.6 dB (6), AAF LPF cutoff = 1/3 × fS, HPF cutoff = 700 kHz, full temperature, unless otherwise noted. Table 1. AD9271-25 AD9271-40 AD9271-50 Parameter1 Conditions Min Typ Max Min Typ Max Min Typ Max Unit LNA CHARACTERISTICS Gain = 5/6/8 Single-ended input to differential output 14/15.6/18 14/15.6/18 14/15.6/18 dB Single-ended input to single-ended output 8/9.6/12 8/9.6/12 8/9.6/12 dB Input Voltage Range, Gain = 5/6/8 LNA output limited to 2 V p-p differential output 400/333/250 400/333/250 400/333/250 mV p-p SE2 Input Common Mode 1.4 1.4 1.4 V Input Resistance RFB = 200 Ω 50 50 50 Ω RFB = 400 Ω 100 100 100 Ω RFB = ∞ 15 15 15 kΩ Input Capacitance LI-x 15 15 15 pF −3 dB Bandwidth 40 60 70 MHz Input Noise Current, Gain = 5/6/8 1.1 1.1 1.1 pA/√Hz Input Noise Voltage, Gain = 5/6/8 RS = 0 Ω, RFB = ∞ 1.4/1.4/1.3 1.3/1.2/1.1 1.3/1.2/1.1 nV/√Hz 1 dB Input Compression Point, Gain = 5/6/8 VGAIN = 0 V 770/650/495 770/650/495 770/650/495 mV p-p Noise Figure Active Termination Match RS = 50 Ω, RFB = 200 Ω 6.7 6.7 6.7 dB Unterminated RFB = ∞ 4.9 4.4 4.2 dB FULL-CHANNEL (TGC) CHARACTERISTICS AAF High-Pass Cutoff −3 dB DC/350/700 DC/350/700 DC/350/700 kHz AAF Low-Pass Cutoff −3 dB, programmable 1/3 × fSAMPLE (8 to 18) 1/3 × fSAMPLE (8 to 18) 1/3 × fSAMPLE (8 to 18) MHz Bandwidth Tolerance ±15 ±15 ±15 % Group Delay Variation f = 1 to 18 MHz, gain = 0 V to 1 V ±2 ±2 ±2 ns Input-Referred Noise Voltage LNA gain = 5/6/8, RFB = ∞ 1.7/1.6/1.5 1.6/1.4/1.3 1.6/1.4/1.2 nV/√Hz Correlated Noise Ratio No signal, correlated/ uncorrelated −30 −30 −30 dB Output Offset AAF high pass = 700 kHz −50 +50 −35 +35 −35 +35 LSB Signal-to-Noise Ratio (SNR) fIN = 5 MHz at −7 dBFS VGAIN = 0 V 65.8 64.4 63.7 dBFS fIN = 5 MHz at −1 dBFS VGAIN = 1 V 62 59.7 59 dBFS |
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