AK4641 Datasheet, PDF (7/51 Pages) Asahi Kasei Microsystems – 16 BIT CODEC WITH BLUETOOTH INTERFACE

ASAHI KASEI
[AK4641]
Parameter
Min
Typ
max
Units
Mono Line Output Characteristics: R_L=20kΩ, DAC of Stereo CODEC → MOUT+/MOUT− pins
Output Voltage
MOGN bit = “1”, −17dB
-
0.305
-
Vpp
(Note 9)
MOGN bit = “0”, +6dB
3.56
3.96
4.36
Vpp
S/(N+D) (0dBFS) ^{MOGN bit = “1”, −17dB}
-
74
MOGN bit = “0”, +6dB
76
86
-
dBFS
-
dBFS
S/N (A-weighted) ^{MOGN bit = “1”, −17dB}
-
77
MOGN bit = “0”, +6dB
83
93
-
dB
-
dB
Load Resistance
MOGN bit = “1”, −17dB
MOGN bit = “0”, +6dB
2
20
-
-
-
kΩ
-
kΩ
Load Capacitance
-
-
30
pF
AUX Input: AUXIN+, AUXIN− pins: AUXSI bit = “0”
Maximum Input Voltage (Note 10)
-
1.98
-
Vpp
Input Resistance
25
40
55
kΩ
Step Size
1
3
5
dB
Gain Control Range
Max (GN3-0 bits = “FH”)
Min (GN3-0 bits = “0H”)
-
-
+24
−21
-
dB
-
dB
Mono Output: R_L=10kΩ, DAC of Stereo CODEC → MIX → MOUT2 pin
Output Voltage (Note 11)
1.78
1.98
2.18
Vpp
S/(N+D)
(0dBFS)
76
86
-
dB
S/N
(A-weighted)
83
93
-
dB
Load Resistance
10
-
-
kΩ
Load Capacitance (Note 12)
-
-
30
pF
16bit Mono ADC Analog Input Characteristics: AUXIN pin → MIX → ADC of Mono CODEC: AUX Volume = 0dB
Resolution
-
-
16
Bits
Input Voltage (Note 13)
1.68
1.98
2.28
Vpp
S/(N+D)
(−1dBFS)
65
75
-
dB
S/N
79
89
-
dB
16bit Mono DAC Analog Output Characteristics: DAC of Mono CODEC → MOUT+/− pins: MOGN = +6dB
Resolution
-
-
16
Bits
Output Voltage (Note 14)
3.56
3.96
4.36
Vpp
S/(N+D)
68
78
-
dB
S/N
82
92
-
dB
Power Supplies
Power Up (PDN pin = “H”)
AVDD+DVDD+ BVDD
-
17
27
mA
Power Down (PDN pin = “L”) (Note 15)
AVDD+DVDD+BVDD
-
-
100
µA
Note 9. Output voltage is proportional to AVDD voltage.
Vout = 1.2 x AVDD (typ) @MOGN bit = “0”, 0.092 x AVDD (typ) @MOGN bit = “1” at differential Output.
Note 10. Maximum Input Voltage is proportional to AVDD voltage.
Vin = (AUXIN+) − (AUXIN−) = 0.6 x AVDD (typ) at AUXSI bit = “0”,
Vin = AUXIN+ = 0.6 x AVDD (typ) at AUXSI bit = “1”.
Note 11. Output Voltage is proportional to AVDD voltage. Vout = 0.6 x AVDD (typ).
Note 12. When the output pin drives a capacitive load, a resistor should be added in series between the output pin and
capacitive load.
Note 13. Input voltage is proportional to AVDD voltage. Vin = 0.6 x AVDD (typ).
Note 14. Output Voltage is proportional to AVDD voltage. Vout = 0.6 x AVDD (typ).
Note 15. All digital input pins are fixed to DVSS. When the voltage difference among DVDD, BVDD and AVDD is
larger than 0.3V, the power supply current at power down mode increases.
MS0301-E-00
-7-
2004/05