ak4538 AKM Semiconductor, Inc., ak4538 Datasheet - Page 8

• Manufacturer Part Number: ak4538
• Description: 16bit ?? Codec With Mic/hp/spk-amp
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
Parameter
Headphone-Amp Characteristics: R
Output Voltage (Note 10)
S/(N+D)
S/N
Interchannel Isolation
Interchannel Gain Mismatch
Load Resistance
Load Capacitance
Speaker-Amp Characteristics: R
Output Voltage
S/(N+D)
S/N
Load Resistance
Load Capacitance
AUX Input: AUXIN+, AUXIN- pin
Maximum Input Voltage (Note 12)
Input Resistance
Step Size
Gain Control Range
BEEP Input: BEEPL, BEEPR, BEEPM pin
Maximum Input Voltage (Note 13)
Feedback Resistance
Mono Input: MIN pin
Maximum Input Voltage (Note 14)
Input Resistance
Mono Output: R
Output Voltage
Load Resistance
Load Capacitance (Note 17)
Note 10. Output voltage is proportional to AVDD voltage. Vout = 0.582 x AVDD.
Note 11. Output voltage is proportional to HVDD voltage. Vout = 0.897 x AVDD at Full-differential output.
Note 12. Maximum Input Voltage is proportional to AVDD voltage. Vin = 0.6 x AVDD.
Note 13. Maximum Input Voltage is proportional to AVDD voltage. Vin = 0.6 x AVDD.BEEP-AMP can’t output more
Note 14. Maximum Input Voltage is proportional to AVDD voltage. Vin = 0.6 x AVDD.
Note 15. When ALC2 Gain is changed, this typical value changes between 22k and 26k .
Note 16. Output Voltage is proportional to AVDD voltage. Vout = 0.588 x AVDD.
Note 17. When the output pin drives a capacitive load, a resistor should be added in series between the output pin and
MS0198-E-01
than this maximum voltage.
capacitive load.
(A-weighted)
( 3dBFS)
(A-weighted)
L
(Note 16)
=10k , DAC
(C2 of Figure 2)
(C1 of Figure 2)
(Note 15)
(Note 11)
HP-Amp
L
=8 , BTL, DAC
MIX
L
Figure 2. Headphone-amp output circuit
=22.8 , DAC
MOUT2
HPL/HPR pin
- 8 -
MOUT2
HPL/HPR, DATT=0dB
C1
1.54
2.37
min
47 F
60
80
70
20
50
82
25
14
12
10
8
1
21
> 6.8
MIN
C2
SPP/SPN, ALC2=OFF
1.92
2.96
1.94
typ
0.1
70
90
85
64
90
40
20
24
3
16
max
2.30
3.55
1.98
1.98
1.98
+24
300
0.5
30
30
55
26
36
30
5
[AK4538]
dBFS
Units
Vpp
Vpp
Vpp
Vpp
Vpp
Vpp
2003/5
k
k
k
k
dB
dB
dB
dB
dB
dB
dB
pF
pF
pF
pF