ak7770eq ETC-unknow, ak7770eq Datasheet - Page 11

• Manufacturer Part Number: ak7770eq
• Description: Audio With Multi-channel Audio Codec
• Manufacturer: ETC-unknow

■
MS0699-E-01-PB
Parameter
Analog Volume Control Characteristics OPGA):
Gain
Step size
Headphone-Amp Characteristics: DAC → HPL/HPR pins, RL=16Ω
Output Voltage
S/(N+D)
S/N
Inter channel Isolation
Inter channel Gain Mismatch
Load Resistance
Load Capacitance
Load Capacitance
(Ta=25°C; AVDD=HVDD=DVDD=3.3V; DVDD18=1.8V; VSS1=VSS2=VSS3=0V;
Signal frequency = 1kHz; Measurement bandwidth =20Hz~20kHz , fs=48kHz fs; SRC reset; fs=48kHzs)
DAC3 + HP Amp
(A-weighted)
Maximum
Minimum
+0dB ∼ -16dB
-16dB ∼ -38dB
-38dB ∼ -50dB
(−3dBFS)
−
+
HP-Amp
(OPGA[4:0] bits= “1FH”)
(OPGA[4:0] bits= “01H”)
Figure 3. Headphone amplifier output circuit
(RL,
Figure
(C1,
(C2,
HPR pin
HPL pin
3)
Figure
Figure
C1
3)
3)
- 11 -
1.53
min
0.1
0.1
63
80
60
16
-
-
-
-
-
-
Measurement
0.22μF
10Ω
+
Point
47μF
C2
typ
-50
1.7
0.1
+0
73
86
80
1
2
4
-
-
-
max
1.87
300
0.5
30
-
-
-
-
-
-
-
-
-
RL
[AK7770]
2008/06
Units
Vpp
dB
dB
dB
dB
dB
dB
dB
dB
dB
pF
pF
Ω