AK4632 Datasheet, PDF (7/70 Pages) Asahi Kasei Microsystems – 16-Bit ΔΣ Mono CODEC with ALC & MIC/SPK/Video-AMP

ASAHI KASEI
[AK4632]
ANALOG CHRACTERISTICS
(Ta=25°C; AVDD, DVDD, SVDD, VVDD=3.3V; AVSS=DVSS=SVSS=0V; fs=8kHz, BICK=64fs; Signal
Frequency=1kHz; 16bit Data; Measurement frequency=20Hz ∼ 3.4kHz; EXT Slave Mode; unless otherwise specified)
Parameter
min
typ
max
Units
MIC Amplifier
Input Resistance
20
30
40
kΩ
Gain
(MGAIN1-0 bits = “00”)
(MGAIN1-0 bits = “01”)
-
0
-
dB
-
20
-
dB
(MGAIN1-0 bits = “10”)
(MGAIN1-0 bits = “11”)
-
26
-
dB
-
32
-
dB
MIC Power Supply: MPI pin
Output Voltage (Note 9)
2.22
2.47
2.72
V
Load Resistance
2
-
-
kΩ
Load Capacitance
-
-
30
pF
Input PGA Characteristics:
Input Resistance (Note 10)
5
10
15
kΩ
Step Size
0.05
0.5
0.9
dB
Gain Control Range
−8
-
+27.5
dB
ADC Analog Input Characteristics: MIC Æ IPGA Æ ADC, MIC Gain=20dB, IPGA=0dB, ALC1=OFF
Resolution
-
-
16
Bits
Input Voltage (MIC Gain=20dB, Note 11)
0.168
0.198
0.228
Vpp
S/(N+D)
(−1dBFS) (Note 12)
68
80
-
dB
D-Range
(−60dBFS)
75
85
-
dB
S/N
75
85
-
dB
DAC Characteristics:
Resolution
-
-
16
Bits
Mono Line Output Characteristics: AOUT pin, DAC → AOUT, R_L=10kΩ
Output Voltage (Note 13)
1.78
1.98
2.18
Vpp
S/(N+D)
(0dBFS) (Note 12)
73
85
-
dB
D-Range
(-60dBFS)
83
93
-
dB
S/N
83
93
-
dB
Load Resistance
10
-
-
kΩ
Load Capacitance
-
-
30
pF
Note 9. Output voltage is proportional to AVDD voltage. Vout = 0.75 x AVDD (typ)
Note 10. When IPGA Gain is changed, this typical value changes between 8kΩ and 11kΩ.
Note 11. Input voltage is proportional to AVDD voltage. Vin = 0.06 x AVDD (typ)
Note 12. When a PLL reference clock is FCK pin in PLL Slave Mode, S/(N+D) is 77dB (typ).
Note 13. Output voltage is proportional to AVDD voltage. Vout = 0.6 x AVDD (typ)
MS0396-E-00
-7-
2005/06