2.3.4
Stereo Headphone Output
PARAMETER
TEST CONDITIONS
RL = 32
Ω
RL = 16
Ω
AVDD = 3.3 V
AVDD = 3.3 V,
1 kHz output
1 kHz, 100 mVpp
1 kHz output
1 kHz output
−73
1
80
PO = 10 mW
PO = 20 mW
50
6
90
MIN
TYP
1.0
30
40
97
0.1
1.0
%
dB
dB
dB
dB
mW
dB
MAX
UNIT
VRMS
0-dB full-scale output voltage
Maximum output power, PO
Signal-to-noise ratio, A-weighted (see Note 4)
Total harmonic distortion
Power supply rejection ratio
Programmable gain
Programmable-gain step size
Mute attenuation
NOTE 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.
2.3.5
Analog Reference Levels
PARAMETER
MIN
AVDD/2 − 50 mV
40
50
TYP
MAX
AVDD/2 + 50 mV
60
UNIT
V
kΩ
Reference voltage
Divider resistance
2.3.6
VIL
VIH
VOL
VOH
Digital I/O
PARAMETER
Input low level
Input high level
Output low level
Output high level
0.9
×
BVDD
0.7
×
BVDD
0.1
×
BVDD
MIN
TYP
MAX
0.3
×
BVDD
UNIT
V
V
V
V
2.3.7
Supply Current
PARAMETER
TEST CONDITIONS
Record and playback (all active)
Record and playback (osc, clk, and MIC output powered down)
Line playback only
Total supply current,
No input signal
Record only
Analog bypass (line in to line out)
Power down, DVDD = 1.5 V,
AVDD = BVDD = HPVDD = 3.3 V
Oscillator enabled
Oscillator disabled
MIN
20
16
6
11
4
0.8
TYP
24
18
7.5
13.5
4.5
1.5
0.01
MAX
26
20
9
15
6
3
mA
UNIT
ITOT
2−4
TI [ TEXAS INSTRUMENTS ]
