AK4633 Datasheet, PDF (12/82 Pages) Asahi Kasei Microsystems – 16-Bit Mono CODEC with ALC & MIC/SPK-AMP

ASAHI KASEI
[AK4633]
FILTER CHRACTERISTICS
(Ta = 25°C; AVDD =2.2 ∼ 3.6V, DVDD =1.6 ∼ 3.6V, SVDD =2.2 ∼ 4.0V; fs=8kHz)
Parameter
Symbol
min
typ
ADC Digital Filter (Decimation LPF):
Passband
(Note 19) ±0.16dB
PB
0
-
−0.66dB
-
3.5
−1.1dB
-
3.6
−6.9dB
-
4.0
Stopband
(Note 19)
SB
4.7
-
Passband Ripple
PR
-
-
Stopband Attenuation
SA
73
-
Group Delay
(Note 20)
GD
-
16
Group Delay Distortion
∆GD
-
0
DAC Digital Filter (Decimation LPF):
Passband
(Note 19) ±0.16dB
PB
0
-
−0.54dB
-
3.5
−1.0dB
-
3.6
−6.7dB
-
4.0
Stopband
(Note 19)
SB
4.7
-
Passband Ripple
PR
-
-
Stopband Attenuation
SA
73
-
Group Delay
(Note 20)
GD
-
16
Group Delay Distortion
∆GD
-
0
DAC Digital Filter + Analog Filter:
Frequency Response: 0 ∼ 3.4kHz
FR
-
±1.0
max
Units
3.0
kHz
-
kHz
-
kHz
-
kHz
-
kHz
±0.1
dB
-
dB
-
1/fs
-
µs
3.0
-
-
-
-
kHz
±0.1
dB
-
dB
-
1/fs
-
µs
-
dB
Note 19. The passband and stopband frequencies are proportional to fs (system sampling rate).
For example, ADC is PB=3.6kHz (@-1.0dB)= 0.45 x fs. A reference of frequency response is 1kHz.
Note 20. The calculated delay time caused by digital filtering. This time is from the input of analog signal to setting of the
16-bit data of a channel from the input register to the output register of the ADC.
For the DAC, this time is from setting the 16-bit data of a channel from the input register to the output of analog
signal.
In case of selected the path through the programming filter (1^st HPF + 2-band Equalizer + ALC), the Group
Delay should be increased to 2/fs without the phase changing by IIR filter.
DC CHRACTERISTICS
(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
MS0447-E-03
- 12 -
2006/04