參數(shù)資料
型號(hào)： AK4561VQ
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-Amp
中文描述： 16位編解碼器在ALC和內(nèi)置麥克風(fēng)/惠普放大器
文件頁(yè)數(shù)： 7/48頁(yè)
文件大?。?/td> 332K
代理商： AK4561VQ
ASAHI KASEI
AKM CONFIDENTIAL
[AK4561]
Rev. 0.9
2000/09
- 7 -
ANALOG CHARACTERISTICS
(Ta=25
°
C; VA=VD=MVDD=VT=2.8V, HVDD=4.5V; AGND=DGND=MVSS=0V; fs=48kHz;
Input Frequency =1kHz; Measurement width=20Hz
～
20kHz; unless otherwise specified)
Parameter
Pre-Amp Characteristics:
Input Resistance: Positive Input Pin (Note 7)
Negative Input Pin (Note 8)
Maximum Output Voltage (Note 9)
Output Voltage (Input Voltage = -26dBV, Gain = +16dB) (Note 10)
Step (+12, +16, +20, +24dB)
Load Resistance
Load Capacitance (Note 11)
Inverter-Amp Characteristics:
(Gain:0dB)
Maximum Output Voltage (Note 9)
Load Resistance
Load Capacitance (Note 11)
EQ-Amp Characteristics:
(Gain:0dB)
Maximum Output Voltage (Note 9)
Load Resistance
Load Capacitance (Note 11)
HPF-Amp Characteristics:
(Gain: 0dB)
Maximum Output Voltage (Note 9)
Load Resistance
Load Capacitance (Note 11)
MIC Block Characteristics:
Measured via HPF_O_L/HPF_O_R (Note 10)
S/(N+D) (-10dBV Output) (Note 12)
(Note 10)
Output Noise Voltage (No signal input, Rg = 1k
) (Note 12)
(Note 10)
Interchannel Gain Mismatch (Note 12)
(Note 10)
Interchannel Isolation (Note 12)
(Note 10)
MIC Power Supply Characteristics:
Output Voltage (5k
Load)
Output Current
Note 7. INT_MIC_L, INT_MIC_R, EXT_MIC_L and EXT_MIC_R pins
Note 8. Gain of Pre-Amp is +16dB. Input resistance of Pre-Amp is changed by gain.
Gain=12dB: 2.4k
±
30%
, Gain=20dB: 950
±
30%
, Gain=24dB: 600
±
30%
Note 9. Maximum output voltage is typically (MVDD x 0.7) V.
Note 10. Pre-Amp(Gain:+16dB)
→
HPF-Amp (Gain:0dB, HPF OFF)
Note 11. When output pin drives some capacitive load, some resistor should be added in series between output pin and
capacitive load.
Note 12. Pre-Amp (Gain: +16dB)
→
Inverter-Amp (Gain: +0dB)
→
EQ-Amp (Input/Feedback resistance: 5k
)
→
HPF-Amp (Gain: 0dB, HPF OFF)
min
typ
max
Units
100
1.5
k
k
dBV
dBV
dB
k
pF
-3.2
-10
+4
2
20
-3.2
dBV
k
pF
3
20
-3.2
dBV
k
pF
3
20
-3.2
dBV
k
pF
3
20
60
60
-94
-99
0.5
0.5
70
70
dB
dB
dBV
dBV
dB
dB
dB
dB
2.0
V
3
mA
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