ak4642e AKM Semiconductor, Inc., ak4642e Datasheet - Page 11

• Manufacturer Part Number: ak4642e
• Description: Stereo Codec With Mic/hp/spk-amp
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
Parameter
DAC Characteristics:
Resolution
Stereo Line Output Characteristics: DAC → LOUT, ROUT pins, ALC=OFF, IVOL=0dB, DVOL=0dB, LOVL bit =
Output Voltage (Note 17)
S/(N+D)
S/N
Interchannel Isolation
Interchannel Gain Mismatch
Load Resistance
Load Capacitance
Headphone-Amp Characteristics: DAC → HPL/HPR pins, ALC=OFF, IVOL=0dB, DVOL=0dB
Output Voltage (Note 18)
S/(N+D)
S/N
Interchannel Isolation
Interchannel Gain Mismatch
Load Resistance
Load Capacitance
Note 17. Output voltage is proportional to AVDD voltage. Vout = 0.6 x AVDD (typ)@LOVL bit = “0”.
Note 18. Output voltage is proportional to AVDD voltage.
Note 19. HPG bit = “0”, HVDD=3.3V, R
Note 20. HPG bit = “1”, HVDD=5V, R
MS0420-E-00
HPG bit = “0”, 0dBFS, HVDD=3.3V, R
HPG bit = “1”, 0dBFS, HVDD=5V, R
HPG bit = “1”, 0dBFS, HVDD=3.3V, R
HPG bit = “0”, −3dBFS, HVDD=3.3V, R
HPG bit = “1”, −3dBFS, HVDD=5V, R
HPG bit = “1”, 0dBFS, HVDD=3.3V, R
Vout = 0.6 x AVDD(typ)@HPG bit = “0”, 0.91 x AVDD(typ)@HPG bit = “1”.
(A-weighted)
(−3dBFS)
(A-weighted)
HP-Amp
L
L
C1 in Figure 2
C2 in Figure 2
=16Ω (Po=62mW)
=16Ω (Po=62mW)
LOVL bit = “0”
LOVL bit = “1”
“0”, R
L
Figure 2. Headphone-Amp output circuit
=100Ω.
L
L
(Note 19)
(Note 20)
(Note 19)
(Note 20)
(Note 19)
(Note 20)
=100Ω
=22.8Ω.
L
L
=100Ω
L
=22.8Ω
L
=10kΩ
=22.8Ω
HPL/HPR pin
C1
- 11 -
1.78
2.25
min
1.58
2.40
78
82
80
10
60
80
65
16
-
-
-
-
-
-
-
-
-
-
-
-
10Ω
0.22µF
47µF
Measurement Point
6.8Ω
1.98
2.50
1.98
3.00
1.00
100
typ
0.1
0.1
0.1
88
92
70
80
20
90
90
75
80
-
-
-
-
-
-
C2
16Ω
max
2.18
2.75
2.38
3.60
300
0.5
0.8
0.8
30
30
16
-
-
-
-
-
-
-
-
-
-
-
-
-
[AK4642EN]
2005/09
dBFS
dBFS
dBFS
dBFS
Vrms
Units
Vpp
Vpp
Vpp
Vpp
Bits
kΩ
dB
dB
dB
dB
dB
dB
dB
dB
dB
pF
pF
pF
Ω