AK4687 AKM [Asahi Kasei Microsystems], AK4687 Datasheet - Page 8

• Manufacturer Part Number: AK4687
• Description: Asynchronous Stereo CODEC with Capless Stereo Selector
• Manufacturer: AKM [Asahi Kasei Microsystems]

Power Supplies
Parameter
Power Supply Current
Note 7. PDN1-2 and TEST1-2 pins are held at VSS3, and all digital inputs including clock pins (MCLK1-2, BICK1-2,
(Ta=25°C; AVDD1=AVDD2= DVDD= 3.3V; fs=48kHz)
Parameter
ADC Digital Filter (Decimation LPF):
Passband
Stopband
Stopband Attenuation
Group Delay
Group Delay Distortion
ADC Digital Filter (HPF):
Frequency Response
DAC Digital Filter:
Passband
Stopband
Passband Ripple
Stopband Attenuation
Group Delay
De-emphasis Filter (DEM = ON)
De-emphasis Error
(DC Reference)
DAC Digital Filter + Analog Filter: (DEM = OFF)
Frequency Response
Note 8. The passband and stopband frequencies scale with fs.
Note 9. The passband and stopband frequencies scale with fs (system sampling rate).
Note 10. The calculating delay time occurred at digital filtering. This time is from setting the input of analog signal to
MS1307-E-00
Normal Operation (PDN1 pin = PDN2 pin = “H”)
Power-Down Mode (PDN1 pin = PDN2 pin = “L”;
LRCK1-2, SDTI, SDA, SCL, MSN and CAD0 pins) are held at DVDD or VSS3. However, the LRCK and BICK
pins should be open since these pins become output state when the MSN pin is fixed to DVDD.
For example, 21.8kHz at –0.1dB is 0.454 x fs (DAC). The reference frequency of these responses is 1kHz.
For example, PB=0.4535×fs(@±0.05dB), SB=0.546×fs.
setting the 24bit data of both channels to the output register of PORT1. For DAC, this time is from setting the
20/24bit data of both channels on input register of PORT2 to the output of analog signal.
(Note
(Note
9)
AVVD1
AVDD2
DVDD
DVDD+AVDD1+AVDD2
DVDD+AVDD1+AVDD2
(Note
±0.05dB
-6.0dB
10)
(Note
8)
fs = 32kHz
fs = 44.1kHz
fs = 48kHz
(Note
20.0kHz
40.0kHz
80.0kHz
(Note
8)
10)
9)
fs=44.1kHz
fs=96kHz
fs=192kHz
-3dB
-0.1dB
±0.1dB
-0.2dB
-3.0dB
FILTER CHARACTERISTICS
Symbol
Note
ΔGD
GD
GD
PB
SB
SA
FR
PB
SB
PR
SA
FR
FR
FR
- 8 -
7)
min
28.5
26.3
min
73
64
0
0
-
-
-
-
-
-
-
-
-
-
typ
11
13
27
± 0.2
± 0.3
± 1.0
21.1
21.7
24.0
3
1
typ
1.0
7.1
17
24
0
-
-
-
–0.2/+0.2
± 0.05
–1.5/0
0/+0.6
max
max
18.8
21.7
40
20
-
-
-
-
-
-
-
-
-
-
[AK4687]
Units
Units
2011/05
kHz
kHz
kHz
kHz
kHz
kHz
kHz
mA
mA
mA
mA
1/fs
1/fs
μA
dB
Hz
Hz
dB
dB
dB
dB
dB
dB
dB
dB
µs