[AK4671]
ANALOG CHARACTERISTICS (10bit SAR ADC)
(Ta=25°C; AVDD=PVDD=SAVDD=DVDD =TVDD2 =TVDD3=3.3V; VSS1=VSS2=VSS3=VSS4=0V; unless
otherwise specified)
Parameter
min
typ
max
Units
10bit SAR ADC Characteristics
Resolution
No Missing Codes
Integral Linearity Error
DNL
Analog Input Voltage Range
Offset Error
Gain Error
-
9
-
-
0
-
10
10
-
-
-
±2
Bits
Bits
LSB
LSB
V
LSB
LSB
%
-
SAVDD
±3
±1
-
-
-
-
-
-
±2
±1
Accuracy (Note 31)
Note 31. Accuracy is the difference between the output code when 1.1V is input to SAIN1, SAIN2 or SAIN3 pin and the
“ideal” code at 1.1V.
FILTER CHARACTERISTICS (CODEC)
(Ta=25°C; AVDD=PVDD =SAVDD=2.2 ∼ 3.6V; DVDD=TVDD2 =TVDD3=1.6 ∼ 3.6V; fs=44.1kHz; Programmable
Filter=OFF)
Parameter
Symbol
min
typ
max
Units
ADC Digital Filter (Decimation LPF):
Passband (Note 32)
PB
0
-
-
-
-
19.4
19.9
22.1
-
-
-
19
0
17.3
-
-
-
kHz
kHz
kHz
kHz
kHz
dB
dB
1/fs
μs
±0.16dB
−0.66dB
−1.1dB
−6.9dB
Stopband
Passband Ripple
Stopband Attenuation
Group Delay (Note 33)
Group Delay Distortion
SB
PR
SA
GD
ΔGD
25.9
-
-
69
-
±0.1
-
-
-
-
DAC Digital Filter (LPF):
Passband (Note 32)
PB
0
-
-
20.0
21.1
-
-
-
17.4
-
-
-
±0.1
-
-
kHz
kHz
kHz
kHz
dB
±0.1dB
−1.0dB
−3.0dB
-
25.7
-
68
-
Stopband
SB
PR
SA
GD
Passband Ripple
Stopband Attenuation
Group Delay (Note 33)
dB
1/fs
19
DAC Digital Filter (LPF) + SCF:
FR
-
-
dB
Frequency Response: 0 ∼ 20.0kHz
±1.4
Note 32. The passband and stopband frequencies scale with fs (system sampling rate).
For example, DAC is PB=0.454 x fs (@−0.7dB). Each response refers to that of 1kHz.
Note 33. 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 both channels from the input register to the output register of the ADC.
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.
MS0666-E-02
2010/06
- 12 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
