ak4555 AKM Semiconductor, Inc., ak4555 Datasheet - Page 6

• Manufacturer Part Number: ak4555
• Description: Low Power & Small Package 20bit ?? Codec
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
(Ta=25°C; VDD=1.6 ∼ 3.6V; fs=44.1kHz; DEM1 pin = “L”, DEM0 pin = “H”)
ADC Digital Filter (Decimation LPF):
Passband
Stopband
Passband Ripple
Stopband Attenuation
Group Delay
Group Delay Distortion
ADC Digital Filter (HPF):
Frequency Response
DAC Digital Filter:
Passband
Stopband
Passband Ripple
Stopband Attenuation
Group Delay
DAC Digital Filter + Analog Filter:
Frequency Response
Note 6. The passband and stopband frequencies scale with fs (sampling frequency). For examples, PB=20.0kHz(@ADC:
Note 7. This is the calculated delay time caused by digital filtering. This time is measured from the input of analog signal
(Ta=25°C; VDD=1.6 ∼ 3.6V)
High-Level Input Voltage
Low-Level Input Voltage
High-Level Output Voltage
Low-Level Output Voltage
Input Leakage Current
MS0363-E-01
−1.0dB, DAC: −0.1dB) are 0.454 x fs.
to setting the 20 bit data of both channels on input register to the output register of ADC. This time also includes
group delay of HPF. For DAC, this time is from setting the 20 bit data of both channels on input register to the
output of analog signal.
Parameter
Parameter
(Note 7)
(Note 6)
(Note 6)
(Note 7)
(Note 6)
0 ∼ 20.0kHz
2.2V≤VDD≤3.6V
1.6V≤VDD<2.2V
2.2V≤VDD≤3.6V
1.6V≤VDD<2.2V
(Iout= −20µA)
(Iout= 20µA)
±0.1dB
−1.0dB
−3.0dB
−3dB
−0.5dB
−0.1dB
±0.05dB
−6.0dB
FILTER CHARACTERISTICS
DC CHARACTERISTICS
Symbol
∆GD
GD
GD
SA
SA
PB
SB
PR
FR
PB
SB
PR
FR
Symbol
VOH
VOL
VIH
VIH
VIL
VIL
Iin
- 6 -
70%VDD
80%VDD
VDD−0.1
25.7
24.1
min
65
54
0
0
-
-
-
-
-
-
-
-
-
-
-
-
min
-
-
-
-
22.05
±0.5
20.0
21.1
17.0
19.0
typ
3.4
10
22
0
-
-
-
-
-
-
-
-
typ
-
-
-
-
-
-
-
±0.02
max
17.4
±0.1
20.0
30%VDD
20%VDD
-
-
-
-
-
-
-
-
-
-
-
-
-
-
max
±10
0.1
-
-
-
[AK4555]
Units
kHz
kHz
kHz
kHz
kHz
kHz
kHz
1/fs
1/fs
2005/08
dB
dB
Hz
Hz
Hz
dB
dB
dB
Units
µs
µA
V
V
V
V
V
V