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PDF AK4531A Data sheet ( Hoja de datos )
| Número de pieza | AK4531A | |
| Descripción | Audio CODEC | |
| Fabricantes | Asahi Kasei Microsystems | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AK4531A (archivo pdf) en la parte inferior de esta página. Total 23 Páginas | ||
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ASAHI KASEI
[AK4531A]
eet4U.com AK4531AAudio CODEC with 13ch Mixer & 18bit DAC
taSh General Description
.DaThe AK4531A is a two channel 16bit AUDIO Hi-Fi CODEC (ADC and DAC) with a sampling rate of 4kHz to
50kHz and includes a 2 channel 18bit DAC designed to work together with an extra sound source. Each
wconverter can also operate by independent sampling rates. Its internal recording and playback mixer has 5
w channel stereo and 3 channel mono with L/R, R/L, L/L and R/R switching. The AK4531A also has an
w internal 30dB microphone amplifier. Its master clock is 256 times of fs and an internal PLL can also
mautomatically generates 256fs for master clock from fs. The sampling ADC has an enhanced dual bit delta
osigma modulator. Both the 16bit and 18bit DAC have low outband noise and high jitter tolerance due to a
switched capacitor filter(SCF) and a continuous time filter(CTF). The AK4531A corresponds to a 3.3V digital
.cinterface, performing with a low power dissipation of 315mW. The package is a low profile 44pin LQFP.
UFeatures
t42ch Audio CODEC with low outband noise DAC
2ch 18bit Extra Audio DAC
eStandard Serial Interface for CODEC & DAC
eCODEC & DAC Dynamic Range: 87dB
High Jitter Tolerance
h5ch stereo & 3ch mono recording mixer
Swith L/R, R/L, L/L and R/R switching
5ch stereo & 3ch mono playback mixer
taInput PGA with 32levels & 2dB step
30dB microphone amplifier
a3-wire Serial Interface for Mixer Control
.DSampling Rate: 4kHz 50kHz
Independent Sampling Rates for Each Converter
Master Clock: 256fs
wOn chip PLL for deriving 256fs master clock from fs clock
wCorresponding to a 3.3V digital interface
Low Power Dissipation: 315mW
w omLow Profile Package: 44pin LQFP
.cAK4531 Pin Compatible
www.DataSheet4UM0003-E-01
-1-
1998/12
1 page  
ASAHI KASEI
[AK4531A]
No. Pin Name
Miscellaneous : 11pin
1 RST
11 BUSY
29 VRAD
I/O
I
O
O
25 VRDA1
O
22 VRDA2
O
21 VCOM
O
43 MAMP
O
42 MONO3 I
32 AINFL
O
31 AINFR
O
20 LOOPF
O
Power Supplies : 5pin
18 VA
19 AGND
16 VD
17 VT
15 DGND
-
-
-
-
-
Function
Reset Pin
Status Output
ADC Voltage Reference Pin
Connected to AGND with 0.1uF and 4.7uF capacitors.
CODEC-DAC Voltage Reference Pin
Connected to AGND with 0.1uF and 4.7uF capacitors.
Extra-DAC Voltage Reference Pin
Connected to AGND with 0.1uF and 4.7uF capacitors.
Voltage Common Output Pin
Connected to AGND with 0.1uF and 4.7uF capacitors.
MIC Amp Output Pin
Connected to MONO3 with 1uF capacitor.
MONO #3 Input Pin
Lch Antialias Filter Pin
Connected to AGND with 1.0nF capacitor.
Rch Antialias Filter Pin
Connected to AGND with 1.0nF capacitor.
Loop Filter Pin
Connected to AGND with 0.1uF capacitor.
Analog Power Supply Pin, 5V
Analog Ground Pin
Digital Power Supply Pin, 5V
Output Buffer Power Supply Pin, 3.3V
Digital Ground Pin
Note:
No load current may be taken from the VCOM, VRAD, VRDA1, VRDA2 pins for the external circuits.
All digital input pins except pull-down pins should not be left floating.
M0003-E-01
-5-
1998/12
5 Page 
ASAHI KASEI
Audio Data Formats
[AK4531A]
The data format of CODEC-ADC/DAC is MSB first & MSB justified with 16bit. The BCLK needs 32fs or more
than 32fs cycles. The data format of Extra-DAC is MSB first & MSB justified with 18bit. In this case, BCLK needs
36fs or more than 36fs cycles.
Timing Diagram
Clock Timing
M0003-E-01
Serial Audio Interface Timing
- 11 -
1998/12
11 Page | ||
| Páginas | Total 23 Páginas | |
| PDF Descargar | [ Datasheet AK4531A.PDF ] | |
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