Datasheet

ADAU1381
Rev. B | Page 7 of 84
Parameter Test Conditions/Comments Min Typ Max Unit
Dynamic Range −60 dB input
With A-Weighted Filter (RMS) AVDD = 1.8 V 99 dB
AVDD = 3.3 V 94 103 dB
No Filter (RMS) AVDD = 1.8 V 97 dB
AVDD = 3.3 V 92 100 dB
Total Harmonic Distortion + Noise −3 dBFS dB
AVDD = 1.8 V −88 dB
AVDD = 3.3 V −88 dB
Signal-to-Noise Ratio
With A-Weighted Filter (RMS) AVDD = 1.8 V 99 dB
AVDD = 3.3 V 103 dB
No Filter (RMS) AVDD = 1.8 V 97 dB
AVDD = 3.3 V 100 dB
Power Supply Rejection Ratio CM capacitor = 10 F
AVDD = 3.3 V, 100 mV p-p at 217 Hz −55 dB
AVDD = 3.3 V, 100 mV p-p at 1 kHz −63 dB
Gain Error AVDD = 3.3 V −1 dB
Interchannel Gain Mismatch AVDD = 3.3 V 50 mdB
Offset Error AVDD = 3.3 V 10 mV
DAC TO SPEAKER OUTPUT PATH P
O
= output power
Differential Full-Scale Output Voltage
(0 dB)
Scales linearly with AVDD AVDD/1.65 V rms
AVDD = 1.8 V 1.1 (3.12) V rms (V p-p)
AVDD = 3.3 V 2.0 (5.66) V rms (V p-p)
Total Harmonic Distortion + Noise
4 Ω Load AVDD = 1.8 V, P
O
= 50 mW −60 dB
AVDD = 3.3 V, P
O
= 175 mW −60 dB
8 Ω Load AVDD = 1.8 V, P
O
= 50 mW −60 dB
AVDD = 3.3 V, P
O
= 175 mW −60 dB
AVDD = 3.3 V, P
O
= 330 mW −60 dB
AVDD = 3.3 V, P
O
= 440 mW −16 dB
Dynamic Range −60 dB input
With A-Weighted Filter (RMS) AVDD = 1.8 V 100 dB
AVDD = 3.3 V 94 105 dB
No Filter (RMS) AVDD = 1.8 V 98 dB
AVDD = 3.3 V 92 103 dB
Signal-to-Noise Ratio
With A-Weighted Filter (RMS) AVDD = 1.8 V 100 dB
AVDD = 3.3 V 105 dB
No Filter (RMS) AVDD = 1.8 V 98 dB
AVDD = 3.3 V 103 dB
Power Supply Rejection Ratio CM capacitor = 10 F
AVDD = 3.3 V,100 mV p-p at 217 Hz −55 dB
AVDD = 3.3 V, 100 mV p-p at 1 kHz −55 dB
Differential Offset Error AVDD = 3.3 V 2 mV
Mono Mixer Mute Attenuation,
DAC to Mixer Path Muted
Mute set by Register 0x401F, Bit 0 −90 dB
BEEP TO SPEAKER OUTPUT PATH P
O
= output power
Differential Full-Scale Output Voltage
(0 dB)
Scales linearly with AVDD AVDD/1.65 V rms
AVDD = 1.8 V 1.1 (3.12) V rms (V p-p)
AVDD = 3.3 V 2.0 (5.66) V rms (V p-p)