ST Sound Termina STA382BWTR, Manual, Page: 25 / 172

STA382BW Electrical specifications
Doc ID 022783 Rev 1 25/172
Figure 3. Test circuit
3.6 Electrical specifications for the analog section
The specifications given in this section are valid for the operating conditions:
f = 1 kHz, T
amb
= 25 °C, VDD3V3 = 3.3 V,
R
Line
= 5 k
Ω
, R
Hp
= 32
Ω
,
unless otherwise specified.
Table 8. Electrical specifications for the analog section
Symbol Parameter Conditions Min Typ Max Unit
Vout Output voltage for line out G
v
= 2.5, THD < 1%, Rload = 5 k
Ω
1.9 2.1 Vrms
Pout Output voltage for HP out THD+N = 10%, G
v
= 2.5, Rload = 32
Ω
40 mW
DR Dynamic range for line out
Vout = 2 V
RMS
, F
in
= 200 Hz,
V
in
= 0.8 mV (-60 dBFs)
100 dB
X-Talk Channel separation for line out V
out
= 2 Vrms, G
v
= 2.5 75 dB
PSRR Power supply rejection ratio
HP mode, P
0
= 15 mW 70 dB
Line out mode, V
Out
= 2 Vrms 70
R
in
Line input resistance 30
(1)
1. Refer to 8.2: Headphone and 2 Vrms line out , Figure 47: Headphone and line out block diagram , R
in
= R1
k
Ω
THD+N Total harmonic dist noise
HP mode, V
out
= 200 mV
RMS
, G
v
= 2.5 0.03 %
Line out mode, V
Out
= 0.2 Vrms, G
v
= 2.5 0.03 %
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