AK4566 Datasheet, PDF (6/45 Pages) Asahi Kasei Microsystems – 20bit Stereo CODEC with built-in IPGA & HP-AMP

ASAHI KASEI
AKM CONFIDENTIAL
[AK4566]
ANALOG CHARACTERISTICS
(Ta=25°C; AVDD=DVDD=HVDD=3.0V, AVSS =DVSS=HVSS=0V; fs=44.1kHz; BOOST OFF; Signal Frequency
=1kHz; Measurement band width=20Hz ∼ 20kHz; unless otherwise specified)
Parameter
min
Typ
max
Units
ADC Resolution
20
bit
IPGA Characteristics: (AINL1, AINR1 pins) (LINE IN)
Input Voltage
Input Resistance
Step Size
Gain Control Range
1.5
Vpp
25
50
kΩ
0.5
dB
-31
+20
dB
IPGA Characteristics: (AINL2, AINR2 pins) (MIC IN)
Input Voltage
Input Resistance
Step Size
Gain Control Range
1.5
Vpp
6
12.5
kΩ
0.5
dB
-19
+32
dB
ADC Characteristics:
(Note 6)
S/(N+D)
(-1dB Input)
82
dB
D-Range
(-60dB Input, A-weighted))
88
dB
S/N
(A-weighted)
88
dB
Interchannel Isolation
80
dB
Interchannel Gain Mismatch
0.2
dB
Power Supply Rejection
(Note 11)
50
dB
DAC Resolution
20
bit
Headphone-Amp: (HPL/HPR pins) (Note 7) Load impedance is a serial connection with R_L =22.8Ω and C_L=100µF.
S/(N+D)
(0dBFS Output)
50
dB
D-Range
(-60dBFS Output, A-weighted)
90
dB
S/N
(A-weighted)
90
dB
Interchannel Isolation
80
dB
Interchannel Gain Mismatch
0.2
dB
Load Resistance
(Note 8)
20
Ω
Load Capacitance (C1 in Figure 2)
30
pF
(C2 in Figure 2)
(Note 9)
300
pF
Output Voltage
1.5
Vpp
Power Supply Rejection
(Note 11)
50
dB
Mono Output: (MOUT pin)
(Note 10)
S/(N+D)
(0dBFS Output)
S/N
(A-weighted)
Load Resistance
Load Capacitance
Output Voltage
Power Supply Rejection
80
88
(Note 8)
10
1.5
(Note 11)
50
dB
dB
kΩ
30
pF
Vpp
dB
Output Volume: (MOUT pin)
Step Size
Gain Control Range
2
-30
dB
0
dB
Note 6. The signal inputs are AINL1/AINR1 or AINL2/AINR2. The value of IPGA is set to 0dB. On-chip HPF cancels the
offset of IPGA and ADC.
Note 7. DACL=DACR= “1”, MINL=MINR=LIN=RIN= “0”, and ATTL=ATTR=0dB.
Note 8. AC Load
Note 9. The resistor larger than 6.8Ω is inserted in series.
Note 10. DACM= “1”, LINM=RINM=MINM= “0”, ATTL=ATTR=ATTM=0dB, and common mode signal is input to
L/Rch of DAC.
Note 11. PSR is applied to AVDD, DVDD and HVDD with 1kHz, 50mVpp.
REV 0.5
2002/2
-6-