AK4560A Datasheet, PDF (7/47 Pages) Asahi Kasei Microsystems – 16bit CODEC with ALC and MIC/HP/SPK-Amps

ASAHI KASEI
[AK4560A]
ANALOG CHARACTERISTICS
(Ta=25°C; VA=VD=2.8V, MVDD=3.9V, SVDD=4.0V, HVDD=4.5V; AGND=DGND=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 (Note 9)
70
100
130
kΩ
Maximum Output Voltage (Note 10)
-1
dBV
Gain
+18
+26
+30
dB
Load Resistance
1
kΩ
Load Capacitance (Note 11)
20
pF
EQ-Amp Characteristics: (Gain:0dB)
Maximum Output Voltage (Note 11)
-1
dBV
Load Resistance
1
kΩ
Load Capacitance (Note 11)
20
pF
HPF-Amp Characteristics: (Gain: 0dB)
Maximum Output Voltage (Note 10)
-1
dBV
Load Resistance
3
kΩ
Load Capacitance (Note 11)
20
pF
MIC Block Characteristics: Measured via HPF_O_L/HPF_O_R (Note 12)
S/(N+D) (-10dBV Output)
60
77
dB
Output Noise Voltage (No signal input, Rg = 1kΩ)
BW = 20Hz ∼ 20kHz, A-Weighted) (Note 13)
BW = 400Hz ∼ 30kHz (Note 14)
-93
-89
dBV
-92
-88
dBV
Interchannel Isolation
70
90
dB
MIC Power Supply Characteristics:
Output Voltage (No Load) (Note 15)
2.2
2.5
2.8
V
Output Current
3
mA
Note 9. INT_MIC_L, INT_MIC_R, EXT_MIC_L and EXT_MIC_R pins
Note 10. Maximum output voltage is typically (MVDD-1.3) V.
Note 11. When output pin drives some capacitive load, some resistor should be added in series between output pin and
capacitive load.
Note 12. These values are measured via the following path. EQ-Amp and HPF-Amp are a unity gain buffer.
Pre-Amp (Gain: +26dB → EQ-Amp (Gain: 0dB, Not add signal of other channel) → HPF-Amp (Gain: 0dB)
Note 13. In case of the following path, output noise voltage is suitable value for -59.4dB (typ) and -55.4dBV (min).
MIC Block (Gain: +26dB, Input from INT_MIC_L/INT_MIC_R pins) → IPGA (Gain: +26dB) + ADC →
DAC+LINEOUT (Gain: +7.5dB, Measured via LOUT1/ROUT1 pins)
Note 14. In the following path, if analog input signal is –70dBV (Then analog output level is –10.5dBV at LINEOUT),
output noise voltage except the fundamental wave is suitable value for 58.4dBV(typ.) and –54.4dBV(min.).
Because it is not possible that each block of IPGA, ADC, DAC and LINEOUT output a distortion when the small
signal level is input.
MIC Block (Gain: +26dB, Input from INT_MIC_L/INT_MIC_R pins) → IPGA (Gain: +26dB) + ADC →
DAC+LINEOUT (Gain: +7.5dB, Measured via LOUT1/ROUT1 pins)
Note 15. Output voltage is typically (MVDD - 1.4) V.
MS0028-E-00
-7-
2000/05