Datasheet

2−3
2.3.3 Stereo Headphone Output
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
0-dB full-scale output voltage 1.0 V
RMS
Maximum output power, P
O
R
L
= 32 Ω 30
mW
R
L
= 16 Ω 40
mW
Signal-to-noise ratio, A-weighted (see Note 4) AV
DD
= 3.3 V 90 97 dB
Total harmonic distortion
AV
DD
= 3.3 V,
1 kHz output, into
P
O
= 10 mW −60
dB
Total harmonic distortion
DD
1 kHz output, into
32Ω
P
O
= 20 mW −40
dB
Power supply rejection ratio 1 kHz, 100 mV
pp
50 dB
Programmable gain 1 kHz output −73 6 dB
Programmable-gain step size 1 dB
Mute attenuation 1 kHz output 80 dB
NOTES: 3. Ratio of output level with 1-kHz full-scale input, to the output level with the input short circuited, measured A-weighted over a 20-Hz
to 20-kHz bandwidth using an audio analyzer.
4. All performance measurements done with 20-kHz low-pass filter and, where noted, A-weighted filter. Failure to use such a filter
results in higher THD + N and lower SNR and dynamic range readings than shown in the electrical characteristics. The low-pass
filter removes out-of-band noise, which, although not audible, may affect dynamic specification values.
5. Ratio of output level with 1-kHz full-scale input, to the output level with all zeros into the digital input, measured A-weighted over
a 20-Hz to 20-kHz bandwidth.
2.3.4 Analog Reference Levels
PARAMETER MIN TYP MAX UNIT
Reference voltage, V
MID
AVDD/2 − 50 mV AVDD/2 + 50 mV V
Divider resistance, R
VMID
40 50 60 kΩ
2.3.5 Digital I/O
PARAMETER MIN TYP MAX UNIT
V
IL
Input low level 0.3 × BV
DD
V
V
IH
Input high level 0.7 × BV
DD
V
V
OL
Output low level 0.1 × BV
DD
V
V
OH
Output high level 0.9 × BV
DD
V
2.3.6 Supply Current
PARAMETER MIN TYP MAX UNIT
Line playback only (Clk power off, 50 Ω) 6 8
Total supply current, no input signal
Line playback only (Clk power on, 50 Ω) 15
I
TOT
Total supply current, no input signal
(3.3 V supply)
Analog bypass (line in to line out) 3
mA
I
TOT
(3.3 V supply)
Power down
Oscillator enabled 1.5
mA
Power down
Oscillator disabled 0.01 0.025