Datasheet

ADAU1381
Rev. B | Page 8 of 84
Parameter Test Conditions/Comments Min Typ Max Unit
Total Harmonic Distortion + Noise
8 Ω, 1 nF load, AVDD = 1.8 V, P
O
= 50 mW −60 dB
AVDD = 3.3 V, P
O
= 175 mW −60 dB
Dynamic Range −60 dB input
With A-Weighted Filter (RMS) AVDD = 1.8 V 97 dB
AVDD = 3.3 V 103 dB
No Filter (RMS) AVDD = 1.8 V 94 dB
AVDD = 3.3 V 100 dB
Signal-to-Noise Ratio
With A-Weighted Filter (RMS) AVDD = 1.8 V 98 dB
AVDD = 3.3 V 103 dB
No Filter (RMS) AVDD = 1.8 V 96 dB
AVDD = 3.3 V 101 dB
Power Supply Rejection Ratio CM capacitor = 10 F
100 mV p-p at 217 Hz −57 dB
100 mV p-p at 1 kHz −60 dB
Differential Offset Error 2 mV
Mono Mixer Mute Attenuation,
Beep to Mixer Path Muted
Mute set by Register 0x401F, Bit 0 −90 dB
REFERENCE (CM PIN)
Common-Mode Reference Output AVDD/2 V
POWER SUPPLY SPECIFICATIONS
AVDD1 and AVDD2 must always be equal. Power supply measurements are taken with the sound engine processing path enabled.
Table 3.
Parameter Test Conditions/Comments Min Typ Max Unit
AVDD1, AVDD2 1.8
1
3.3 3.65 V
IOVDD 1.63 3.3 3.65 V
Digital I/O Current (IOVDD = 3.3 V) 20 pF capacitive load on all digital pins
Slave Mode, Analog I/O,
12.288 MHz External MCLK Input
f
S
= 48 kHz 0.20 mA
f
S
= 96 kHz 0.35 mA
f
S
= 8 kHz 0.04 mA
Master Mode, MCKO Disabled f
S
= 48 kHz 1.25 mA
f
S
= 96 kHz 2.50 mA
f
S
= 8 kHz 0.22 mA
Digital I/O Current (IOVDD = 1.8 V) 20 pF capacitive load on all digital pins
Slave Mode, Analog I/O,
12.288 MHz External MCLK Input
f
S
= 48 kHz 0.10 mA
f
S
= 96 kHz 0.18 mA
f
S
= 8 kHz 0.02 mA
Master Mode, MCKO Disabled f
S
= 48 kHz 0.68 mA
f
S
= 96 kHz 1.33 mA
f
S
= 8 kHz 0.12 mA
Analog Current (AVDD) See Table 4
1
The zero-cross detection of the beep path is not supported at AVDD1, AVDD2 < 2.2 V.