ASAHI KASEI
[AK4564]
FS-2dB = -6.5dBV
-2dB
+4.6dB
-1.9dBV
0dBV
-4.5dBV
-4.5dBV
Full-differential
FS
Single-ended
-7.9dBV
OATT = 0dB
+6dB
-10dBV
-12.75dBV
-16.5dBV
-1.4dB
FS-4dB = -8.5dBV
+9.75dB
-16.5dBV
FS-12dB
+18dB
-20dBV
-30dBV
OATT = -8.25dB
-24.75dBV
OATT+DAC
ALC2
SPK-AMP
Figure 19. Speaker-Amp Output Level Diagram (AVDD=2.8V, OATT= •8.25dB & 0dB)
*FS = Full Scale
BEEP2S bit
From BEEP2
ALCS bit
SP1
-
From ALC2
+
8
W
-
+
SP0
Figure 20. Speaker-Amp Internal equivalent circuit
MS0140-E-01
2002/07
- 25 -