參數(shù)資料
型號： AKD4564
廠商： Asahi Kasei Microsystems Co.,Ltd
元件分類： Codec
英文描述： 16BIT CODEC WITH BUILT-IN ALC AND MIC/HP/SPK-AMP
中文描述： 16位編解碼器，配有ALC和麥克風/惠普/胰腎聯(lián)合移植腺苷
文件頁數(shù)： 8/48頁
文件大?。?/td> 382K
代理商： AKD4564
ASAHI KASEI
[AK4564]
MS0140-E-01
2002/07
- 8 -
(Continue)
Parameter
min
typ
max
Units
DAC Analog Output characteristics:
Measured via LOUT1/ROUT1, LOUT2/ROUT2, VOL=+6.5dB
Resolution
S/(N+D) (0dBFS)
DR (-60dBFS, A-Weighted)
S/N (A-Weighted)
Output Voltage (Note 19)
Interchannel Isolation
Interchannel Gain Mismatch
Load Resistance
Load Capacitance (Note 13)
Headphone-Amp Characteristics:
DAC
à
HPL/HPR pin
Output Voltage (Note 20) HVDD = 3V
(Note 21) HVDD = 4.5V
S/(N+D) (Note 20) HVDD = 3V
(Note 21) HVDD = 4.5V
Output Noise Voltage (A-Weighted);
HPG=“0”, HVDD=3V, R
L
=32
HPG=“1”, HVDD=4.5V, R
L
=100
Interchannel Isolation; HPG=“0”, HVDD=3V, R
L
=32
HPG=“1”, HVDD=4.5V, R
L
=100
Interchannel Gain Mismatch; HPG=“0”, HVDD=3V, R
L
=32
HPG=“1”, HVDD=4.5V, R
L
=100
Load Resistance; HVDD=2.6
～
3.6V, HPG = “0”
HVDD=4.0
～
5.5V, HPG = “1”
Load Capacitance (C1 in Figure 2)
(C2 in Figure 2)
Speaker-Amp Characteristics:
R
L
= 8
, BTL, MIN
à
SP0/SP1, ALC2 = OFF
Output Voltage (-6.5dBV Input)
S/(N+D) (-2dBV Output)
S/N (A-Weighted)
Load Resistance
Load Capacitance
Note 19. Output voltages are proportional to AVDD voltage.
LOUT1, ROUT1, LOUT2, ROUT2 = (1.27 x AVDD) Vpp @VOL = +6.5dB
Note 20. When DAC = 0dBFS Output, OATT = 0dB, HPG = “0”, R
L
= 32
, the output voltage is (0.59 x AVDD) Vpp.
Note 21. When DAC = -12dBFS Output, OATT = 0dB, HPG = “1”, R
L
= 100
, the output voltage is (0.98 x AVDD)
Vpp.
16
+2.8
0.5
30
bits
dB
dB
dB
dBV
dB
dB
k
pF
76
82
82
+1.2
80
10
82
88
88
+2
100
-5.5
-1.1
50
50
60
60
22
100
-4.7
-0.3
70
66
-92
-77
80
80
-3.9
+0.5
-86
-71
0.5
0.5
30
6.8
dBV
dBV
dB
dB
dBV
dBV
dB
dB
dB
dB
pF
nF
-4
30
81
8
-2
60
89
0
10
dBV
dB
dB
pF
+
-
+
HP-Amp
16
16
0.1
μ
HPL, HPR
C1
C2
10
Oscillation prevention circuit
Figure 2. Headphone-Amp Output Circuit
* 0dBV = 1Vrms = 2.83Vpp
相關(guān)PDF資料
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