[AK4675]
ANALOG CHARACTERISTICS (HP/SPK-Amp)
(Ta=25°C; AVDD=PVDD=SAVDD=DVDD=TVDD2=TVDD3=AVDDA=PVDDA=TVDDA=3.3V, SVDDA=3.6V;
VSS1=VSS2=VSS3=VSS4=VSS1A=VSS2A=VSS3A=0V; Input Signal Frequency =1kHz; Measurement band
width=10Hz ∼ 20kHz; Headphone-Amp: RL =16Ω; Speaker-Amp: RL =8Ω + 10μH; Charge Pump Circuit External
Capacitance: C1=C2= 2.2μF (Figure 3); unless otherwise specified)
Parameter
min
typ
max
Units
LIN1A, RIN1A pins
Input Resistance
25
50
110
kΩ
Input Analog Volume: L1V3-0, R1V3-0 bits
Step Size
1
−20
2
-
3
+10
dB
dB
Gain Control Range
Headphone-Amp: (LIN1A/RIN1A Æ HPL/HPR pins), HPGA = 0dB
Output Power (THD+N=1%) SVDDA=3.3V
THD+N 0.7Vrms Single-ended Input, Po = 30mW
Output Noise (A-weighted)
Interchannel Gain Mismatch
Load Resistance
Load Capacitance
Output Voltage: 0.7Vrms at single-ended Input
PSRR
-
-
-
-
16
-
64
-58
24
0.2
-
-
-
40
0.8
-
mW
dB
μVrms
dB
Ω
pF
-
300
0.76
0.62
0.69
Vrms
217Hz (Note 31)
1kHz (Note 31)
217Hz (Note 32)
1kHz (Note 32)
-
-
-
-
60
70
70
100
80
-
-
-
-
-
dB
dB
dB
dB
dB
Interchannel Isolation
80
Headphone Analog Volume 1 (HPGA4-0 bits)
Step Size
0.5
−50
2
-
3.5
+12
dB
dB
Gain Control Range
SPIN pins
Input Resistance
15
26
36
kΩ
Speaker Analog Volume: SPGA5-0 bits
Step Size
0.1
−12
0.5
-
0.9
+19.5
dB
dB
Gain Control Range
Class-D Speaker-Amp: SPIN Æ SPP/SPN; ALC = OFF, Input Volume=SPGA=0dB, BTL
Output Power (THD+N=10%)
SVDDA=5.0V
SVDDA=3.6V
-
-
1.6
0.8
-
-
W
W
Output Level (Note 33)
SVDDA = 5.0V, Input Level = 0.85Vrms
SVDDA = 3.6V, Input Level = 0.64Vrms
SVDDA = 3.6V, Input Level = 0.46Vrms
THD+N: Po=0.25W, Input Level=0.46Vrms(Note 33)
Output Noise (A-weighted)
Load Resistance
-
-
2.7
2.0
1.48
-65
71
-
-
-
Vrms
Vrms
Vrms
dB
μVrms
Ω
1.33
-
-
8
-
1.63
-40
150
-
Load Capacitance (Note 34)
PSRR
-
300
pF
217Hz (Note 35)
1kHz (Note 35)
217Hz (Note 36)
-
-
-
60
50
50
-
-
-
dB
dB
dB
1kHz (Note 36)
-
50
-
dB
Switching Frequency
Short Protection Current (Note 37)
Start-Up Time
150
250
40
30
400
120
48
kHz
mA
ms
18
MS0963-E-00
2008/05
- 15 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
