Datasheet

ADAU1761
Rev. C | Page 7 of 92
Parameter Test Conditions/Comments Min Typ Max Unit
DAC TO HEADPHONE/EARPIECE
OUTPUT
P
O
= output power per channel
Full-Scale Output Voltage (0 dB) Scales linearly with AVDD AVDD/3.3 V rms
AVDD = 1.8 V 0.50 (1.41) V rms (V p-p)
AVDD = 3.3 V 0.92 (2.60) V rms (V p-p)
Total Harmonic Distortion + Noise −4 dBFS
16 Ω load AVDD = 1.8 V, P
O
= 6.4 mW −76 dB
AVDD = 3.3 V, P
O
= 21.1 mW −82 dB
32 Ω load AVDD = 1.8 V, P
O
= 3.8 mW −82 dB
AVDD = 3.3 V, P
O
= 10.6 mW −82 dB
Power Supply Rejection Ratio CM capacitor = 20 F
100 mV p-p @ 217 Hz 56 dB
100 mV p-p @ 1 kHz 67 dB
Interchannel Isolation
1 kHz, 0 dBFS input signal, 32 Ω load,
AVDD = 3.3 V
Referred to GND 73 dB
Referred to CM (capless headphone
mode)
50 dB
REFERENCE
Common-Mode Reference Output CM pin AVDD/2 V
POWER SUPPLY SPECIFICATIONS
Table 2.
Parameter Test Conditions/Comments Min Typ Max Unit
SUPPLIES
Voltage DVDDOUT 1.56 V
AVDD 1.8 3.3 3.65 V
IOVDD 1.63 3.3 3.65 V
Digital I/O Current (IOVDD = 1.8 V) 20 pF capacitive load on all digital pins
Slave Mode f
S
= 48 kHz 0.25 mA
f
S
= 96 kHz 0.48 mA
f
S
= 8 kHz 0.07 mA
Master Mode f
S
= 48 kHz 0.62 mA
f
S
= 96 kHz 1.23 mA
f
S
= 8 kHz 0.11 mA
Digital I/O Current (IOVDD = 3.3 V) 20 pF capacitive load on all digital pins
Slave Mode f
S
= 48 kHz 0.48 mA
f
S
= 96 kHz 0.9 mA
f
S
= 8 kHz 0.13 mA
Master Mode f
S
= 48 kHz 1.51 mA
f
S
= 96 kHz 3 mA
f
S
= 8 kHz 0.27 mA
Analog Current (AVDD) See Table 3