AK4537 Datasheet, PDF (8/76 Pages) Asahi Kasei Microsystems – 16-Bit ΔΣ Stereo CODEC with MIC/HP/SPK-AMP

ASAHI KASEI
[AK4537]
ANALOG CHARACTERISTICS
(Ta=25°C; AVDD, DVDD, PVDD, HVDD=3.3V; AVSS=DVSS=PVSS=HVSS=0V; fs=44.1kHz, BICK=64fs;
Signal Frequency=1kHz; 16bit Data; Measurement frequency=20Hz ∼ 20kHz; unless otherwise specified)
Parameter
min
typ
max
Units
MIC Amplifier:
Input Resistance
20
30
40
kΩ
Gain
(MGAIN bit = “0”)
-
0
-
dB
(MGAIN bit = “1”)
-
20
-
dB
MIC Power Supply:
Output Voltage (Note 4)
2.22
2.47
2.72
V
Output Current
-
-
1.25
mA
Input PGA Characteristics:
Input Resistance
(LIN1, RIN1 pins)
5
10
15
kΩ
(Note 5)
(LIN2, RIN2 pins)
30
60
90
kΩ
Step Size
0.1
0.5
0.9
dB
Gain Control Range (LIN1, RIN1 pins)
−8
-
+27.5
dB
(LIN2, RIN2 pins)
−23.5
-
+12
dB
ADC Analog Input Characteristics: ALC1=OFF
Resolution
16
Bits
Input Voltage (Note 6)
(Note 7)
(Note 8)
0.168
1.68
0.198
1.98
0.228
Vpp
2.28
Vpp
S/(N+D)
(−1dBFS)
(Note 7)
71
79
(Note 8)
-
88
-
dBFS
-
dBFS
D-Range
(−60dBFS, A-weighted)
(Note 7)
(Note 8)
75
-
83
91
-
dB
-
dB
S/N
(A-weighted)
(Note 7)
75
(Note 8)
-
83
91
-
dB
-
dB
Interchannel Isolation
(Note 7)
75
90
(Note 8)
-
100
-
dB
-
dB
Interchannel Gain Mismatch
(Note 7)
-
(Note 8)
-
0.1
0.5
dB
0.1
0.5
dB
DAC Characteristics:
Resolution
-
-
16
Bits
Stereo Line Output Characteristics: R_L=10kΩ, DAC → LOUT, ROUT
Output Voltage (Note 9)
1.74
1.94
2.14
Vpp
S/(N+D)
(-3dBFS)
78
88
-
dBFS
S/N
(A-weighted)
85
92
-
dB
Interchannel Isolation
-
100
-
dB
Interchannel Gain Mismatch
-
0.1
0.5
dB
Load Resistance
10
-
-
kΩ
Load Capacitance
-
-
30
pF
Note 4. Output voltage is proportional to AVDD voltage. Vout = 0.75 x AVDD.
Note 5. When IPGA Gain is changed, this typical value changes between 8kΩ and 11kΩ (LIN1, RIN1), 48kΩ and 66kΩ
(LIN2, RIN2).
Note 6. Input voltage is proportional to AVDD voltage. Vin = 0.06 x AVDD)@Mic In, Vin = 0.6 x AVDD(typ)@Line In.
Note 7. MIC Gain=20dB, IPGA=0dB, ALC1=OFF, INT(MICL)/EXT(MICR) → IPGA → ADC
Note 8. IPGA=0dB, ALC1=OFF, LIN2/RIN2 → IPGA → ADC
Note 9. Output voltage is proportional to AVDD voltage. Vout = 0.588 x AVDD.
MS0202-E-04
-8-
2005/04