參數(shù)資料
型號: AK4343EN
廠商: Asahi Kasei Microsystems Co.,Ltd
英文描述: Stereo DAC with HP/RCV/SPK-AMP
中文描述: 立體聲DAC惠普/垃圾車/胰腎聯(lián)合移植腺苷
文件頁數(shù): 60/98頁
文件大?。?/td> 851K
代理商: AK4343EN
ASAHI KASEI
[AK4343]
MS0478-E-01
2006/10
- 60 -
Speaker Output
Power supply for Speaker-Amp (HVDD) is 2.6V to 5.25V.
Speaker Type
Load Resistance (min)
Load Capacitance (max)
Note 19. Load impedance is total impedance of series resistance (Rseries) and piezo speaker impedance at 1kHz in Figure
58. Load capacitance is capacitance of piezo speaker. When piezo speaker is used, 10
or more series resistors
should be connected at both SPP and SPN pins, respectively.
Table 52. Speaker Type and Power Supply Range
The DAC or LIN2/RIN2/LIN3/RIN3 signal is input to the Speaker-amp as [(L+R)/2]. The Speaker-amp is mono and BTL
output. The gain is set by SPKG1-0 bits. Output level depends on AVDD voltage and SPKG1-0 bits.
Dynamic Speaker
8
30pF
Piezo (Ceramic) Speaker
50
3
μ
F
Gain
Default
SPKG1-0 bits
ALC bit = “0”
+4.43dB
+6.43dB
+10.65dB
+12.65dB
Table 53. SPK-Amp Gain
ALC bit = “1”
+6.43dB
+8.43dB
+12.65dB
+14.65dB
00
01
10
11
SPK-Amp Output (DAC Input = 0dBFS)
ALC bit = “0”
(LMTH1-0 bits = “00”)
3.30Vpp
4.15Vpp (Note 40)
6.75Vpp (Note 40)
8.50Vpp (Note 40)
3.30Vpp
4.15Vpp
6.75Vpp (Note 40)
8.50Vpp (Note 40)
AVDD
HVDD
SPKG1-0 bits
ALC bit = “1”
00
01
10
11
00
01
10
11
3.11Vpp
3.92Vpp
6.37Vpp (Note 40)
8.02Vpp (Note 40)
3.11Vpp
3.92Vpp
6.37Vpp (Note 40)
8.02Vpp (Note 40)
3.3V
3.3V
5.0V
Note 40. The output level is calculated by assuming that output signal is not clipped. In actual case, output signal may be
clipped when DAC outputs 0dBFS signal. DAC output level should be set to lower level by setting digital
volume so that Speaker-Amp output level is 4.0Vpp (HVDD=3.3V) or 6.0V (HVDD=5V) or less and output
signal is not clipped.
Table 54. SPK-Amp Output Level
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