AK4958ECB Datasheet, PDF (14/35 Pages) Asahi Kasei Microsystems – 24bit Stereo CODEC with MIC/SPK/VIDEO-AMP & LDO

[AK4958]
アナログ特性
(Ta=25C; fs=48kHz, BICK=64fs; Signal Frequency=1kHz; 24bit Data; Measurement Bandwidth =20Hz  20kHz; unless
otherwise specified; AK4958EG: AVDD = 3.3V, DVDD = TVDD= 1.8V; VSS1=VSS2=VSS3=VSS4=0V,
AK4958ECB: AVDD = 3.3V, DTVDD = 1.8V; VSS1=VSS2=0V)
Parameter
min
typ
max
Unit
MIC Amplifier: LIN1, RIN1, LIN2, RIN2 pins
Input Resistance
20
30
42
k
MGAIN2-0 bits = “000”
Gain
MGAIN2-0 bits = “001”
1
0
+1
dB
+5
+6
+7
dB
MGAIN2-0 bits = “010”
+11
+12
+13
dB
MGAIN2-0 bits = “011”
+14
+15
+16
dB
MGAIN2-0 bits = “100”
+17
+18
+19
dB
MGAIN2-0 bits = “101”
+20
+21
+22
dB
MGAIN2-0 bits = “110”
+24
+25
+26
dB
MGAIN2-0 bits = “111”
+29
+30
+31
dB
MIC Power Supply: MPWR pin
Output Voltage
MICL bit = “0”
2.2
MICL bit = “1”
1.8
2.4
2.0
2.6
V
2.2
V
Output Noise Level (A-weighted)
-
108
-
dBV
Load Resistance
0.5
-
-
k
Load Capacitance
-
-
30
pF
PSRR (Sine Wave = 500mVpp, fin =1kHz)
-
100
-
dB
ADC Analog Input Characteristics:
AK4958EG: LIN1/RIN1/LIN2/RIN2 pins  ADC (Programmable Filter = OFF)
AK4958ECB: LIN1/RIN1 pins  ADC (Programmable Filter = OFF)
Resolution
-
Input Voltage (Note 12)
(Note 13)
-
(Note 14)
1.86
S/(N+D) (1dBFS)
(Note 13)
73
(Note 14)
-
D-Range (60dBFS, A-weighted)
(Note 13)
(Note 14)
78
-
S/N
(A-weighted)
(Note 13)
78
(Note 14)
-
Interchannel Isolation
(Note 13)
75
(Note 14)
-
Interchannel Gain Mismatch
(Note 13)
-
(Note 14)
-
PSRR (Sine Wave = 500mVpp, fin =1kHz)
-
Note 12. Vin = 0.9 x 2.3Vpp (typ) @MGAIN2-0 bits = “000” (0dB)
Note 13. MGAIN2-0 bits = “100” (+18dB)
Note 14. MGAIN2-0 bits = “000” (0dB)
-
0.261
2.07
83
85
88
96
88
96
90
100
0
0
80
24
Bits
-
Vpp
2.28
Vpp
-
dBFS
-
dBFS
-
dB
-
dB
-
dB
-
dB
-
dB
-
dB
0.5
dB
0.5
dB
-
dB
MS1558-J-01-PB
- 14 -
2013/10