Datasheet

ADAU1772 Data Sheet
Rev. B | Page 6 of 116
Parameter Test Conditions/Comments Min Typ Max Unit
Interchannel Gain Mismatch Line output mode 20 mdB
Total Harmonic Distortion + Noise Line output mode, 20 Hz to 20 kHz, −1 dBFS dB
AVDD = 1.8 V −93 dB
AVDD = 3.3 V −94 dB
Gain Error Line output mode ±0.1 dB
Dynamic Range
1
Headphone mode, 20 Hz to 20 kHz, −60 dB input
With A-Weighted Filter (RMS) AVDD = 1.8 V 100 dB
AVDD = 3.3 V
104
dB
With Flat 20 Hz to 20 kHz Filter AVDD = 1.8 V 97 dB
AVDD = 3.3 V 101 dB
Signal-to-Noise Ratio
2
Headphone mode, 20 Hz to 20 kHz
With A-Weighted Filter (RMS) AVDD = 1.8 V 100 dB
AVDD = 3.3 V
104
dB
With Flat 20 Hz to 20 kHz Filter AVDD = 1.8 V 98 dB
AVDD = 3.3 V 102 dB
Interchannel Gain Mismatch Headphone mode 50 mdB
Total Harmonic Distortion + Noise Headphone mode, 20 Hz to 20 kHz, −1 dBFS
32 Ω load
AVDD = 1.8 V, P
O
= 6.7 mW
−77
dB
AVDD = 3.3 V, P
O
= 22.4 mW −80 dB
24 Ω load AVDD = 1.8 V, P
O
= 8.9 mW −76 dB
AVDD = 3.3 V, P
O
= 30 mW
−79
dB
16 Ω load AVDD = 1.8 V, P
O
= 13 mW −74 dB
AVDD = 3.3 V, P
O
= 44 mW −77 dB
Headphone Output Power
32 Ω Load AVDD = 1.8 V, <0.1% THD + N 8.4 mW
AVDD = 3.3 V, <0.1% THD + N
28.1
mW
24 Ω Load AVDD = 1.8 V, <0.1% THD + N 11.2 mW
AVDD = 3.3 V, <0.1% THD + N 37.4 mW
16 Ω Load AVDD = 1.8 V, <0.1% THD + N 16.25 mW
AVDD = 3.3 V, <0.1% THD + N 55.8 mW
Gain Error Headphone mode ±0.1 dB
Offset Error ±0.1 mV
Interchannel Isolation 1 kHz, 0 dBFS input signal 100 dB
Power Supply Rejection Ratio CM capacitor = 22 μF, 100 mV p-p at 1 kHz 70 dB
DAC DIFFERENTIAL OUTPUT
Differential operation
Full-Scale Output Voltage Scales linearly with AVDD AVDD/1.8 V rms
AVDD = 1.8 V 1.0 V rms
AVDD = 1.8 V, 0 dBFS 2.58 V p-p
AVDD = 3.3 V 1.83 V rms
AVDD = 3.3 V, 0 dBFS 5.49 V p-p
Mute Attenuation −72 dB
Dynamic Range
1
Line output mode, 20 Hz to 20 kHz, −60 dB input
With A-Weighted Filter (RMS) AVDD = 1.8 V 104 dB
AVDD = 3.3 V 107 dB
With Flat 20 Hz to 20 kHz Filter AVDD = 1.8 V 101 dB
AVDD = 3.3 V 105 dB
Signal-to-Noise Ratio
2
Line output mode, 20 Hz to 20 kHz
With A-Weighted Filter (RMS)
AVDD = 1.8 V
105
dB
AVDD = 3.3 V 108 dB
With Flat 20 Hz to 20 kHz Filter AVDD = 1.8 V 102 dB
AVDD = 3.3 V 105 dB
Interchannel Gain Mismatch Line output mode 20 mdB
Total Harmonic Distortion + Noise Line output mode, 20 Hz to 20 kHz, −1 dBFS dB
AVDD = 1.8 V −96 dB
AVDD = 3.3 V −96 dB
Gain Error Line output mode %