AK7841 Datasheet, PDF (14/21 Pages) Asahi Kasei Microsystems – Monaural Audio Class-D Amp with Power Booster for PiezoSpeaker

ASAHI KASEI
AKM CONFIDENTIAL
[AK7840]
20
18
16
14
12
10
8
6
4
2
0
2.5
3
3.5
4
4.5
5
Supply Voltage (V)
Figure. 12 Shutdown Current vs Supply Voltage
70
Vin=1Vpp
A-Weighted
60
VBAT=2.7V
VBAT=3.6V
50 VBAT=4.5V
※）Wave forms are overlapping.
40
30
20
0.001
100.10
11k
Frequency (Hz)
1100k _{20k 110000k}
Figure. 14 Common-Mode Rejection Ratio vs Frequency
PDN
2V/div
Output Waveform
10V/div
10ms/div
Figure. 13 Startup Waveform
Rev.08
- 14 -
2008/3