ak4564 AKM Semiconductor, Inc., ak4564 Datasheet - Page 25

• Manufacturer Part Number: ak4564
• Description: 16bit Codec With Built-in Alc And Mic/hp/spk-amp
• Manufacturer: AKM Semiconductor, Inc.

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