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ADAU1772BCPZ-R7 数据表(PDF) 5 Page - Analog Devices |
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ADAU1772BCPZ-R7 数据表(HTML) 5 Page - Analog Devices |
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5 / 117 page  ADAU1772 Data Sheet Rev. C | Page 4 of 116 SPECIFICATIONS Master clock = core clock = 12.288 MHz, serial input sample rate = 48 kHz, measurement bandwidth = 20 Hz to 20 kHz, word width = 24 bits, ambient temperature = 25°C, outputs line loaded with 10 kΩ. ANALOG PERFORMANCE SPECIFICATIONS Supply voltages AVDD = IOVDD = 1.8 V, DVDD = 1.1 V, unless otherwise noted. PLL disabled, direct master clock. Table 1. Parameter Test Conditions/Comments Min Typ Max Unit ANALOG-TO-DIGITAL CONVERTERS ADC Resolution All ADCs 24 Bits Digital Attenuation Step 0.375 dB Digital Attenuation Range 95 dB INPUT RESISTANCE Gain settings do not include 10 dB gain from PGA_x_BOOST settings; this additional gain does not affect input impedance; PGA_POP_DISx = 1 Single-Ended Line Input 0 dB gain 14.3 kΩ PGA Inputs −12 dB gain 32.0 kΩ 0 dB gain 20 kΩ +35.25 dB gain 0.68 kΩ SINGLE-ENDED LINE INPUT PGA_ENx = 0, PGA_x_BOOST = 0, PGA_POP_DISx = 1 Full-Scale Input Voltage Scales linearly with AVDD AVDD/3.63 V rms AVDD = 1.8 V 0.49 V rms AVDD = 1.8 V, 0 dBFS 1.38 V p-p AVDD = 3.3 V 0.90 V rms AVDD = 3.3 V, 0 dBFS 2.54 V p-p Dynamic Range1 20 Hz to 20 kHz, −60 dB input With A-Weighted Filter (RMS) AVDD = 1.8 V 97 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 Signal-to-Noise Ratio (SNR)2 With A-Weighted Filter (RMS) AVDD = 1.8 V 98 dB AVDD = 3.3 V 103 dB With Flat 20 Hz to 20 kHz Filter AVDD = 1.8 V 96 dB AVDD = 3.3 V 100 dB Interchannel Gain Mismatch 40 mdB Total Harmonic Distortion + Noise (THD + N) 20 Hz to 20 kHz, −1 dBFS AVDD = 1.8 V −90 dB AVDD = 3.3 V −94 dB Offset Error ±0.1 mV Gain Error ±0.2 dB Interchannel Isolation CM capacitor = 22 μF 100 dB Power Supply Rejection Ratio CM capacitor = 22 μF 100 mV p-p at 1 kHz 55 dB SINGLE-ENDED PGA INPUT PGA_ENx = 1, PGA_x_BOOST = 0 Full-Scale Input Voltage Scales linearly with AVDD AVDD/3.63 V rms AVDD = 1.8 V 0.49 V rms AVDD = 1.8 V, 0 dBFS 1.38 V p-p AVDD = 3.3 V 0.90 V rms AVDD = 3.3 V, 0 dBFS 2.54 V p-p Dynamic Range1 20 Hz to 20 kHz, −60 dB input 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 |
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