AK4646_11 Datasheet, PDF (11/81 Pages) Asahi Kasei Microsystems – Stereo CODEC with MIC/SPK-AMP

[AK4646]
FILTER CHARACTERISTICS
(Ta = 25°C; AVDD =2.2 ∼ 3.6V, DVDD =1.6 ∼ 3.6V, SVDD =2.2 ∼ 4.0V; fs=44.1kHz; DEM=OFF)
Parameter
Symbol
min
typ
max
Units
ADC Digital Filter (Decimation LPF):
Passband (Note 25)
±0.16dB
PB
0
-
17.3
kHz
−0.66dB
−1.1dB
−6.9dB
-
19.4
-
kHz
-
19.9
-
kHz
-
22.1
-
kHz
Stopband
SB
26.1
-
-
kHz
Passband Ripple
PR
-
-
±0.1
dB
Stopband Attenuation
SA
73
-
-
dB
Group Delay (Note 26)
GD
-
19
-
1/fs
Group Delay Distortion
ΔGD
-
0
-
μs
DAC Digital Filter (LPF):
Passband (Note 25)
±0.05dB
PB
−6.0dB
0
-
20.0
kHz
-
22.05
-
kHz
Stopband
SB
24.1
-
-
kHz
Passband Ripple
PR
-
-
±0.02
dB
Stopband Attenuation
SA
54
-
-
dB
Group Delay (Note 26)
GD
-
20
-
1/fs
DAC Digital Filter (LPF) + SCF:
Frequency Response: 0 ∼ 20.0kHz
FR
-
±1.0
-
dB
Note 25. The passband and stopband frequencies scale with fs (system sampling rate).
For example, ADC is PB = 20.0kHz = 0.454*fs (@-1.0dB). Each response refers to that of 1kHz.
Note 26. The calculation delay time caused by digital filtering. This time is from the input of analog signal to setting of the
16-bit data of both channels to the output register of the ADC. This time includes the group delay of the HPF. For
the DAC, this time is from setting the 16-bit data of both channels from the input register to the output of analog
signal.
DC CHARACTERISTICS
(Ta = 25°C; AVDD =2.2 ∼ 3.6V, DVDD =1.6 ∼ 3.6V, SVDD =2.2 ∼ 4.0V)
Parameter
Symbol
min
typ
max
Units
High-Level Input Voltage
(DVDD ≥ 2.2V)
VIH 70%DVDD
-
-
V
(DVDD < 2.2V)
80%DVDD
-
-
V
Low-Level Input Voltage
(DVDD ≥ 2.2V)
VIL
-
-
30%DVDD V
(DVDD < 2.2V)
-
-
20%DVDD V
High-Level Output Voltage
(Iout=−80μA) VOH DVDD−0.4
-
-
V
Low-Level Output Voltage
(Iout= 80μA)
VOL
-
-
0.4
V
Input Leakage Current
Iin
-
-
±10
μA
MS0557-E-05
- 11 -
2011/01