AK4564 Просмотр технического описания (PDF) - Asahi Kasei Microdevices
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AK4564 Datasheet PDF : 48 Pages
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ASAHI KASEI
[AK4564]
ANALOG CHARACTERISTICS
(Ta=25°C; AVDD, DVDD, MVDD=2.8V, SVDD=3.0V, HVDD=4.5V; AVSS, DVSS, MVSS, SVSS=0V; fs=48kHz;
Input Frequency =1kHz; Measurement width=20Hz ∼ 20kHz, unless otherwise specified)
Parameter
min
typ
Max
Units
Pre-Amp Characteristics:
Input Resistance (INTL, INTR, EXTL, EXTR pins)
70
100
130
kΩ
Maximum Output Voltage (Note 11)
-4.5
dBV
Gain
+18
+24
+30
dB
Load Resistance (Note 12)
3
30
kΩ
Load Capacitance (Note 13)
10
pF
MIC Power Supply Voltage Characteristics: MPWR pin
Output Voltage (Output current = 0mA) (Note 14)
1.4
1.6
1.8
V
Maximum Output Current
3
mA
ADC Analog Input Characteristics: ALC1 = OFF
Resolution
16
bits
Input Resistance (LIN1, RIN1, LIN2, RIN2 pins)
70
100
130
kΩ
Input Voltage (Note 15) (Note 16)
-5.1
-4.3
-3.5
dBV
(Note 15) (Note 17)
-58.5
-57.7
-56.9
dBV
S/(N+D) (-0.5dBFS) (Note 16)
78
88
dB
(Note 18)
75
85
dB
DR (-60dBFS, A-Weighted) (Note 16)
84
90
dB
(Note 17)
57
61
dB
S/N (A-Weighted) (Note 16)
84
90
dB
(Note 17)
57
61
dB
Interchannel Isolation (Note 16)
80
100
dB
(Note 17)
50
70
dB
Interchannel Gain Mismatch (Note 16)
0.5
dB
(Note 17)
0.5
dB
Note 11. Maximum output voltage is (0.6 x AVDD) Vpp.
Note 12. Load resistance is the value of “Rf + Ri”. (Refer to Figure 12)
Note 13. When the output pin drives some capacitive load, some resistor should be added in series between output pin and
capacitive load.
Note 14. When the output current is 0mA, the output voltage of MPWR pin is typically (MVDD – 1.2) V at MVDD=2.8V
and typically (MVDD-1.4) V at MVDD=4.5V.
When the output current is 3mA, the output voltage of MPWR pin is typically (MVDD – 1.5) V at MVDD=2.8V
and typically (MVDD-1.7) V at MVDD=4.5V.
Note 15. Input voltages are proportional to AVDD voltage.
LIN1, RIN1, LIN2, RIN2 = (0.62 x AVDD) Vpp
INTL, INTR, EXTL, EXTR = (0.0013 x AVDD) Vpp
Note 16. Input from LIN1, RIN1, LIN2 or RIN2 pins. IVOL=0dB.
Note 17. Input from INTL, INTR, EXTL or EXTR pins. Pre-Amp Gain = + 23.9dB, PRE = “1”, IVOL = +29.625dB
External resistor of Pre-Amp is “Rf = 10kΩ, Ri = 680Ω”. (Refer to Figure 12)
Note 18. Input from INTL, INTR, EXTL or EXTR pins. Pre-Amp Gain = + 23.9dB, PRE = “1”, IVOL = +0dB
External resistor of Pre-Amp is “Rf = 10kΩ, Ri = 680Ω”. (Refer to Figure 12)
* 0dBV = 1Vrms = 2.83Vpp
MS0140-E-01
-7-
2002/07
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