AK4951EG Datasheet, PDF (14/30 Pages) Asahi Kasei Microsystems – 24bit Stereo CODEC with MIC/HP/SPK-AMP

[AK4951]
8. Electrical Characteristics
■ Analog Characteristics
(Ta=25C; AVDD=SVDD=3.3V, TVDD=DVDD=1.8V; VSS1=VSS2=VSS3=0V; fs=48kHz, BICK=64fs;
Signal Frequency=1kHz; 24bit Data; Measurement Bandwidth=20Hz  20kHz; unless otherwise specified)
Parameter
min
typ
max
Unit
MIC Amplifier: LIN1, RIN1, LIN2, RIN2, LIN3, RIN3 pins
Input Resistance
20
30
40
k
Gain
Gain Setting
0
-
+30
dB
Step Width
-
3
-
dB
MIC Power Supply: MPWR1, MPWR2 pins
Output Voltage
MICL bit = “0”
MICL bit = “1”
2.2
1.8
2.4
2.0
2.6
V
2.2
V
Output Noise Level (A-weighted)
-
-108
-
dBV
Load Resistance
1.0
-
-
k
Load Capacitance
-
-
30
pF
PSRR (f = 1kHz) (Note 12)
-
100
-
dB
ADC Analog Input Characteristics: LIN1, RIN1, LIN2, RIN2, LIN3, RIN3 pins → ADC (Programmable
Filter = OFF) → SDTO
Resolution
-
-
24
Bits
Input Voltage (Note 13)
(Note 14)
-
(Note 15)
1.86
0.261
2.07
-
Vpp
2.28
Vpp
(Note 14)
73
83
-
dBFS
S/(N+D) (-1dBFS) (Note 15: AK4951EN)
-
85
-
dBFS
(Note 15: AK4951EG)
-
84
-
dBFS
D-Range (60dBFS, A-weighted)
(Note 14)
(Note 15)
78
-
88
96
-
dB
-
dB
S/N (A-weighted)
(Note 14)
78
88
(Note 15)
-
96
-
dB
-
dB
Interchannel Isolation
(Note 14)
75
100
(Note 15)
-
110
-
dB
-
dB
Interchannel Gain Mismatch
(Note 14)
(Note 15)
-
-
0
0.5
dB
0
0.5
dB
PSRR (f = 1kHz) (Note 12)
-
80
-
dB
Note 12. PSRR applied to AVDD with 500mVpp sine wave.
Note 13. Vin = 0.9 x 2.3Vpp (typ) @MGAIN3-0 bits = “0000” (0dB)
Note 14. MGAIN3-0 bits = “0110” (+18dB)
Note 15. MGAIN3-0 bits = “0000” (0dB)
014004561-E-00-PB
- 14 -
2014/08