
Si2400
Rev. 1.3 13
4. Analog Input/Output
Figure 4 illustrates an optional application circuit to support the analog output capability of the Si2400 for voice
monitoring purposes.
Figure 4. Optional Connection to AOUT for a Monitoring Speaker
‘
Figure 5. Analog Input Circuit
Table 9. Component Values—Optional Connection to AOUT
Symbol Value
C2, C3, C5 0.1 µF, 16 V, ±20%
C4 100 µF, 16 V, Elec. ±20%
C6 820 pF, 16 V, ±20%
R1 10 kΩ, 1/10 W, ±5%
R2 10 Ω, 1/10 W, ±5%
R3 47 kΩ, 1/10 W, ±5%
U1 LM386
AOUT +
–
+ 5 V
3
2
6
5
4
U1
C3
C5
C4
C6
R1
C2 R3
AIN/GPIO
Analog Input
Si2400
1 V
RMS
0.1 μF
Comentários a estes Manuais