AK4569 Datasheet, PDF (6/45 Pages) Asahi Kasei Microsystems – 20-Bit Stereo CODEC with IPGA & HP-AMP

ASAHI KASEI
[AK4569]
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
1.35
1.5
25
50
0.1
0.5
−31
1.65
Vpp
75
kΩ
0.9
dB
+20
dB
IPGA Characteristics: (AINL2, AINR2 pins) (MIC IN)
Input Voltage
Input Resistance
Step Size
Gain Control Range
1.35
1.5
6
12.5
0.1
0.5
−19
1.65
Vpp
19
kΩ
0.9
dB
+32
dB
ADC Characteristics:
(Note 6)
S/(N+D)
(−1dB Input)
74
84
dB
D-Range
(−60dB Input, A-weighted))
82
89
dB
S/N
(A-weighted)
82
89
dB
Interchannel Isolation
80
100
dB
Interchannel Gain Mismatch
0.2
0.5
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
70
dB
D-Range
(−60dBFS Output, A-weighted)
82
90
dB
S/N
(A-weighted)
82
90
dB
Interchannel Isolation
70
90
dB
Interchannel Gain Mismatch
0.2
0.5
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
1.35
1.5
1.65
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
70
84
82
90
(Note 8)
10
1.35
1.5
(Note 11)
-
50
dB
dB
kΩ
30
pF
1.65
Vpp
-
dB
Output Volume: (MOUT pin)
Step Size
Gain Control Range
1
2
−30
3
dB
0
dB
Note 6. The signal inputs are AINL1/AINR1 or AINL2/AINR2. The value of the IPGA is set to 0dB. On-chip HPF
cancels the IPGA and ADC offsets.
Note 7. DACL=DACR= “1”, MINL=MINR=LIN=RIN= “0”, and ATTL=ATTR=0dB.
Note 8. AC Load
Note 9. A resistor greater 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.
MS0292-E-01
-6-
2005/07