ak4646 AKM Semiconductor, Inc., ak4646 Datasheet - Page 8

• Manufacturer Part Number: ak4646
• Description: Stereo Codec With Mic/spk-amp
• Manufacturer: AKM Semiconductor, Inc.

(Ta=25°C; AVDD, DVDD, SVDD=3.3V; AVSS=DVSS=SVSS=0V; fs=44.1kHz, BICK=64fs;
Note 10. The voltage difference between IN1/2+ and IN1/2− pins. AC coupling capacitor should be inserted in series at
Note 11. Output voltage is proportional to AVDD voltage. Vout = 0.8 x AVDD (typ)
Note 12. Input voltage is proportional to AVDD voltage Vin = 0.0636 x AVDD (typ)@MGAIN2-0 bits = “001” (+20dB),
Note 13. MGAIN2-0 bits = “001” (+20dB)
Note 14. MGAIN2-0 bits = “000” (0dB)
MS0557-E-02
Signal Frequency=1kHz; 16bit Data; Measurement frequency=20Hz ∼ 20kHz; unless otherwise specified)
Parameter
MIC Amplifier: LIN1, RIN1, LIN2, RIN2 pins; MDIF1 = MDIF2 bits = “0” (Single-ended inputs)
Input Resistance
Gain
MIC Amplifier: IN1+, IN1−, IN2+, IN2− pins; MDIF1 = MDIF2 bits = “1” (Full-differential input)
Input Voltage (Note 10)
MIC Power Supply: MPWR pin
Output Voltage (Note 11)
Load Resistance
Load Capacitance
ADC Analog Input Characteristics: LIN1/RIN1/LIN2/RIN2 pins → ADC → IVOL, IVOL=0dB, ALC=OFF
Resolution
Input Voltage (Note 12)
S/(N+D)
D-Range (−60dBFS, A-weighted)
S/N
Interchannel Isolation
Interchannel Gain Mismatch
each input pin. Full-differential mic input is not available at MGAIN2-0 bits = “000”. Maximum input voltage of
IN1+, IN1−, IN2+ and IN2− pins is proportional to AVDD voltage, respectively.
Vin = |(IN1/2+) − (IN1/2−)| = 0.073 x AVDD (max)@MGAIN2-0 bits = “001”, 0.037 x AVDD
(max)@MGAIN2-0 bits = “010”, 0.018 x AVDD (max)@MGAIN2-0 bits = “011”, 0.232 x AVDD
(max)@MGAIN2-0 bits = “100”, 0.104 x AVDD (max)@MGAIN2-0 bits = “101”, 0.052 x AVDD
(max)@MGAIN2-0 bits = “110”, 0.026 x AVDD (max)@MGAIN2-0 bits = “111”
Vin = 0.636 x AVDD (typ)@MGAIN2-0 bits = “000” (0dB)
(−1dBFS)
(A-weighted)
MGAIN2-0 bits = “000”
MGAIN2-0 bits = “001”
MGAIN2-0 bits = “010”
MGAIN2-0 bits = “011”
MGAIN2-0 bits = “100”
MGAIN2-0 bits = “101”
MGAIN2-0 bits = “110”
MGAIN2-0 bits = “111”
MGAIN2-0 bits = “001”
MGAIN2-0 bits = “010”
MGAIN2-0 bits = “011”
MGAIN2-0 bits = “100”
MGAIN2-0 bits = “101”
MGAIN2-0 bits = “110”
MGAIN2-0 bits = “111”
ANALOG CHARACTERISTICS
(Note 13)
(Note 14)
(Note 13)
(Note 14)
(Note 13)
(Note 14)
(Note 13)
(Note 14)
(Note 13)
(Note 14)
(Note 13)
(Note 14)
- 8 -
0.178
2.38
1.78
min
0.5
20
73
76
76
75
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
0.210
2.64
2.10
+20
+26
+32
+10
+17
+23
+29
100
typ
0.1
0.1
30
83
88
86
95
86
95
90
0
-
-
-
-
-
-
-
-
-
-
0.242
0.121
0.061
0.765
0.342
0.171
0.086
0.242
max
2.90
2.42
0.8
0.8
40
16
30
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
[AK4646]
dBFS
dBFS
2007/05
Units
Vpp
Vpp
Vpp
Vpp
Vpp
Vpp
Vpp
Vpp
Vpp
Bits
kΩ
kΩ
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
pF
V