AK4650 Datasheet, PDF (12/86 Pages) Asahi Kasei Microsystems – 16Bit ΔΣ CODEC with MIC/HP/SPK-AMP & TSC

[AK4650]
Parameter
min
typ
max
Units
Headphone-Amp Characteristics: R_L=16Ω, DAC → HPL/HPR pins, DATT=0dB
Output Voltage (Note 14)
0dBFS Input
-
0.82
-
Vrms
−6dBFS Input
0.32
0.41
0.50
Vrms
S/(N+D)
0dBFS Input
-
35
-
dB
−6dBFS Input
50
60
-
dB
S/N
(A-weighted)
80
90
-
dB
Interchannel Isolation (−6dBFS Input)
60
85
-
dB
Interchannel Gain Mismatch (−6dBFS Input)
-
0.1
-
dB
Load Resistance
16
-
-
Ω
Load Capacitance (Note 15)
-
-
300
pF
Headphone Detection: HDT pin
Comparator Voltage Level (Note 16)
0.99
-
2.31
V
Internal pull up Resistance
50
100
150
kΩ
Speaker-Amp Characteristics: R_L=8Ω, BTL, DAC → MOUT2 pin → MIN pin → SPP/SPN pins, ALC2=OFF
Output Voltage (Note 17)
−2.5dBFS Input
-
1.55
-
Vrms
−7.5dBFS Input
0.75
0.94
1.13
Vrms
S/(N+D)
−2.5dBFS Input
-
20
-
dB
−7.5dBFS Input
40
55
-
dB
S/N
(A-weighted)
80
90
-
dB
Load Resistance
8
-
-
Ω
Load Capacitance (Note 15)
-
-
30
pF
Mono Output: DAC → MIX → MOUT2 pin
Output Voltage (Note 18)
-
1.98
-
Vpp
Load Resistance (Note 19)
30
-
-
kΩ
Load Capacitance (Note 15, Note 19)
-
-
20
pF
Mono Input: MIN pin
Maximum Input Voltage (Note 20)
-
1.98
-
Vpp
Input Resistance (Note 21)
12
24
36
kΩ
BEEP Input: BEEP pin, External input resistance = 20kΩ
Maximum Input Voltage (Note 22)
-
1.98
-
Vpp
Feedback Resistance
-
20
-
kΩ
Output Voltage (0.8Vpp input)
BEEP pin → HPL/HPR pins
0.045
0.09
0.135
Vpp
BEEP pin → SPP/SPN pins, ALC2 bit = “0”
1.26
2.53
3.80
Vpp
Note 14. Output voltage is proportional to AVDD voltage. Vout = 0.12 x AVDD Vrms(typ)@−6dBFS.
Note 15. When the output pin drives a capacitive load, a resistor should be added in series between the output pin and
capacitive load.
Note 16. Comparator Voltage Level is proportional to HVDD voltage. Vth = 0.3 x HVDD(min), 0.7 x HVDD(max).
Note 17. Output voltage is proportional to HVDD voltage. Vout = 0.28 x AVDD Vrms(typ)@−6dBFS at Full-differential
output.
Note 18. Output Voltage is proportional to AVDD voltage. Vout = 0.6 x AVDD(typ).
Note 19. These values do not include the input resistance or capacitance of the MIN pin.
Note 20. Maximum Input Voltage is proportional to AVDD voltage. Vin = 0.6 x AVDD(typ).
Note 21. When ALC2 Gain is changed, this typical value changes between 22kΩ and 26kΩ.
Note 22. Maximum Input Voltage depends on AVDD voltage, internal feedback resistance (Rf) and external input
resistance (Ri). Vin = 0.6 x AVDD x Ri / Rf (typ).
MS0502-E-01
- 12 -
2007/04