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ADAU1777BCBZRL Datasheet(PDF) 4 Page - Analog Devices |
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ADAU1777BCBZRL Datasheet(HTML) 4 Page - Analog Devices |
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4 / 108 page  ADAU1777 Data Sheet Rev. 0 | Page 4 of 108 SPECIFICATIONS Master clock = 12.288 MHz, serial input sample rate = 48 kHz, measurement bandwidth = 20 Hz to 20 kHz, word width = 24 bits, TA = 25°C, outputs line loaded with 10 kΩ. ANALOG PERFORMANCE SPECIFICATIONS AVDD = IOVDD = 1.8 V, DVDD = 1.1 V, unless otherwise noted. Phase-locked loop (PLL) disabled, direct master clock. Table 1. Parameter Test Conditions/Comments Min Typ Max Unit ANALOG-TO-DIGITAL CONVERTERS (ADCs) 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 Programmable Gain Amplifier (PGA) Inputs −12 dB gain 32.0 kΩ 0 dB gain 20 kΩ +35.25 dB gain 0.68 kΩ LINE INPUT PGA_ENx = 0, PGA_x_BOOST = 0, PGA_POP_DISx = 1 Full-Scale Input Voltage Scales linearly with AVDD AVDD/3.3 V rms AVDD = 1.8 V 0.55 V rms AVDD = 1.8 V 1.54 V p-p AVDD = 3.3 V 1.00 V rms AVDD = 3.3 V 2.83 V p-p Dynamic Range1 20 Hz to 20 kHz, −60 dB input With A-Weighted Filter (RMS) AVDD = 1.8 V 95 97 dB AVDD = 3.3 V 99 102 dB With Flat 20 Hz to 20 kHz Filter AVDD = 1.8 V 92 94 dB AVDD = 3.3 V 96 99 dB Signal-to-Noise Ratio (SNR)2 With A-Weighted Filter (RMS) AVDD = 1.8 V 96 98 dB AVDD = 3.3 V 100 103 dB With Flat 20 Hz to 20 kHz Filter AVDD = 1.8 V 92 96 dB AVDD = 3.3 V 96 100 dB Interchannel Gain Mismatch 0 40 200 mdB Total Harmonic Distortion + Noise (THD + N) 20 Hz to 20 kHz, −1 dB from full-scale input AVDD = 1.8 V −90 −83 dB AVDD = 3.3 V −94 −87 dB Offset Error −0.11 +0.12 mV Gain Error −0.4 +0.2 dB Interchannel Isolation CM capacitor = 22 μF 95 dB Power Supply Rejection Ratio (PSRR) CM capacitor = 22 μF, 100 mV p-p at 1 kHz 55 dB PGA INPUT PGA_ENx = 1, PGA_x_BOOST = 0 Full-Scale Input Voltage Scales linearly with AVDD AVDD/3.3 V rms AVDD = 1.8 V 0.55 V rms AVDD = 1.8 V 1.54 V p-p AVDD = 3.3 V 1.00 V rms AVDD = 3.3 V 2.83 V p-p Dynamic Range1 20 Hz to 20 kHz, −60 dB input With A-Weighted Filter (RMS) AVDD = 1.8 V 94 dB AVDD = 3.3 V 102 dB With Flat 20 Hz to 20 kHz Filter AVDD = 1.8 V 92 dB AVDD = 3.3 V 98 dB |
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