ak4538 AKM Semiconductor, Inc., ak4538 Datasheet - Page 7

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

ASAHI KASEI
(Ta=25 C; AVDD=DVDD=PVDD=HVDD=3.3V; AVSS=DVSS=PVSS=HVSS=0V; fs=44.1kHz, BICK=64fs;
Parameter
MIC Amplifier
Input Resistance
Gain
MIC Power Supply
Output Voltage
Output Current
MIC Detection
Comparator Voltage Level (Note 5)
Internal pull down Resistance
Input PGA Characteristics:
Input Resistance
Step Size
Gain Control Range
ADC Analog Input Characteristics: MIC Gain=20dB, IPGA=0dB, ALC1=OFF, MIC
Resolution
Input Voltage (MIC Gain=20dB, Note 7)
S/(N+D)
D-Range
S/N
DAC Characteristics:
Resolution
Stereo Line Output Characteristics: R
Output Voltage (Note 8)
S/(N+D) (-3dBFS)
S/N
Interchannel Gain Mismatch
Load Resistance
Load Capacitance
Mono Line Output Characteristics: R
Output Voltage (Note 9)
S/(N+D) (-3dBFS)
S/N
Load Resistance
Load Capacitance
Note 4. Output voltage is proportional to AVDD voltage. Vout = 0.75 x AVDD.
Note 5. Comparator Voltage Level is proportional to AVDD voltage. Vout = 0.05 x AVDD(min), 0.075 x AVDD(max).
Note 6. When IPGA Gain is changed, this typical value changes between 8k and 11k .
Note 7. Input voltage is proportional to AVDD voltage. Vin = 0.06 x AVDD.
Note 8. Output voltage is proportional to AVDD voltage. Vout = 0.588 x AVDD.
Note 9. Output voltage is proportional to AVDD voltage. Vout = 1.2 x AVDD(typ)@MOGN=0,
MS0198-E-01
Signal Frequency=1kHz; 16bit Data; Measurement frequency=20Hz 20kHz; unless otherwise specified)
0.094 x AVDD(typ)@MOGN=1 at Full-differential output.
Vout = 0.6 x AVDD(typ)@MOGN=0, 0.047 x AVDD(typ) @MOGN=1 at Single-end Output.
(A-weighted)
(A-weighted)
( 1dBFS)
( 60dBFS, A-weighted)
(A-weighted)
(Note 6)
(Note 4)
(MGAIN bit = “0”)
(MGAIN bit = “1”)
MOGN=1, -17dB
MOGN=0, +6dB
MOGN=1, -17dB
MOGN=0, +6dB
MOGN=1, -17dB
MOGN=0, +6dB
MOGN=1, -17dB
MOGN=0, +6dB
ANALOG CHARACTERISTICS
L
L
=20k , DAC
=10k , DAC
- 7 -
0.165
0.168
MOUT+/MOUT-
2.22
LOUT/ROUT
1.74
3.56
min
250
0.1
20
71
75
75
78
85
10
79
85
20
5
2
-
-
-
-
-
-
8
0.198
2.47
1.94
0.31
3.96
500
typ
0.5
0.1
30
20
10
79
83
83
88
92
76
89
79
95
0
-
IPGA
+27.5
0.247
0.228
max
2.72
1.25
2.14
4.36
750
0.9
0.5
40
15
16
16
30
30
-
-
-
ADC
[AK4538]
dBFS
dBFS
dBFS
Units
Vpp
Vpp
Vpp
Vpp
2003/5
Bits
Bits
mA
mV
k
k
k
k
k
k
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
pF
pF
V