[AK4141]
AUDIO CHARACTERISTICS
(Ta=25°C; AVDD=3.3V, DVDD=1.8V, TVDD=3.3V; GND1=GND2=GND3=GND4=GND5=0V; fs=48kHz;
SCLK=64fs; Signal Frequency=1kHz; 24bit Data; Measurement frequency=50Hz ∼ 13kHz; unless otherwise specified)
SIF & Demodulator Parameter
min
typ
max
Units
SIF Input Impedance
GSEL bit = 0
GSEL bit = 1
SIF Separation (Note 3)
AGC step width
4.05
5.09
40
4.50
5.66
kohm
kohm
dB
0.64
dB
Input Voltage
1 or 2 FM Carriers
GSEL bit = “0”
GSEL bit = “1”
0.1
0.1
1.4
1.0
Vpp
Vpp
1 FM and 1 NICAM Carrier
GSEL bit = “0”
0.1
0.1
1.4
1.0
Vpp
Vpp
GSEL bit = “1”
1 AM and 1 NICAM Carrier
GSEL bit = “0”
0.1
0.1
0.8
0.8
Vpp
Vpp
GSEL bit = “1”
1 NICAM Only
GSEL bit = “0”
GSEL bit = “1”
0.05
0.05
1.0
1.0
Vpp
Vpp
Max FM-deviation (approx.)
Normal
+/-180
+/-360
+/-540
max
kHz
kHz
kHz
Units
dB
High deviation
Very High Deviation
NICAM Characteristics
Output level (1kHz, 0dBr)
S/N
min
-1.5
74
typ
+1.5
80
dB
THD+N
0.05
0.15
1
+1
%
NICAM Bit Error Rate (FM+ NICAM, normal condition)
Frequency response (20 ~ 15kHz, -12dB, dual)
NICAM Crosstalk attenuation (dual)
Channel separation (stereo)
FM Characteristics (Note 4)
Output level (1kHz, 0dBr)
S/N
10-7
dB
-1
80
80
min
-1.5
67
dB
dB
Units
dB
dB
typ
max
+1.5
73
THD+N
0.1
0.3
+1
%
dB
dB
dB
Units
dB
Frequency response (20 ~ 12kHz, -12dB, dual)
FM Crosstalk attenuation (dual)
Channel separation (stereo)
AM Characteristics
S/N
-1
75
30
min
47
85
40
typ
62
max
THD+N
1.2
3
%
Frequency response (20 ~ 12kHz, -12dB, dual)
-2.5
+1
dB
Note 3. Selected SIF pin is connected to GND through 10nF capacitor.
Note 4. 1 FM-Carrier, 5.5MHz.
Rev. 0.3-PB
2008/01
- 7 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
