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ADAU1772BCPZ-R7 数据表(PDF) 6 Page - Analog Devices |
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ADAU1772BCPZ-R7 数据表(HTML) 6 Page - Analog Devices |
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6 / 117 page  Data Sheet ADAU1772 Rev. C | Page 5 of 116 Parameter Test Conditions/Comments Min Typ Max Unit Total Harmonic Distortion + Noise 20 Hz to 20 kHz, −1 dBFS AVDD = 1.8 V −88 dB AVDD = 3.3 V −90 dB Signal-to-Noise Ratio2 With A-Weighted Filter (RMS) AVDD = 1.8 V 96 dB AVDD = 3.3 V 102 dB With Flat 20 Hz to 20 kHz Filter AVDD = 1.8 V 94 dB AVDD = 3.3 V 99 dB PGA Gain Variation With −12 dB Setting Standard deviation 0.05 dB With +35.25 dB Setting Standard deviation 0.15 dB PGA Boost PGA_x_BOOST 10 dB PGA Mute Attenuation PGA_MUTEx −65 dB Interchannel Gain Mismatch 0.005 dB Offset Error 0 mV Gain Error ±0.2 dB Interchannel Isolation 83 dB Power Supply Rejection Ratio CM capacitor = 22 μF, 100 mV p-p at 1 kHz 63 dB MICROPHONE BIAS MIC_ENx = 1 Bias Voltage 0.65 × AVDD AVDD = 1.8 V, MIC_GAINx = 1 1.16 V AVDD = 3.3 V, MIC_GAINx = 1 2.12 V 0.90 × AVDD AVDD = 1.8 V, MIC_GAINx = 0 1.63 V AVDD = 3.3 V, MIC_GAINx = 0 2.97 V Bias Current Source 3 mA Output Impedance 1 Ω MICBIASx Isolation MIC_GAINx = 0 95 dB MIC_GAINx = 1 99 dB Noise in the Signal Bandwidth3 AVDD = 1.8 V, 20 Hz to 20 kHz MIC_GAINx = 0 27 nV/√Hz MIC_GAINx = 1 16 nV/√Hz AVDD = 3.3 V, 20 Hz to 20 kHz MIC_GAINx = 0 35 nV/√Hz MIC_GAINx = 1 19 nV/√Hz DIGITAL-TO-ANALOG CONVERTERS DAC Resolution All DACs 24 Bits Digital Attenuation Step 0.375 dB Digital Attenuation Range 95 dB DAC SINGLE-ENDED OUTPUT Single-ended operation, HPOUTLP and HPOUTRP pins Full-Scale Output Voltage Scales linearly with AVDD AVDD/3.4 V rms AVDD = 1.8 V 0.53 V rms AVDD = 1.8 V, 0 dBFS 1.5 V p-p AVDD = 3.3 V 0.97 V rms AVDD = 3.3 V, 0 dBFS 2.74 V p-p Mute Attenuation −72 dB Dynamic Range1 Line output mode, 20 Hz to 20 kHz, −60 dB input With A-Weighted Filter (RMS) AVDD = 1.8 V 100 dB AVDD = 3.3 V 104 dB With Flat 20 Hz to 20 kHz Filter AVDD = 1.8 V 97 dB AVDD = 3.3 V 101 dB Signal-to-Noise Ratio2 Line output mode, 20 Hz to 20 kHz With A-Weighted Filter (RMS) AVDD = 1.8 V 100 dB AVDD = 3.3 V 104 dB With Flat 20 Hz to 20 kHz Filter AVDD = 1.8 V 98 dB AVDD = 3.3 V 102 dB |
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