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PDF AK4355 Data sheet ( Hoja de datos )
| Número de pieza | AK4355 | |
| Descripción | 192kHz 24-Bit 6ch DAC | |
| Fabricantes | Asahi Kasei Microsystems | |
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ASAHI KASEI
[AK4355]
AK4355
192kHz 24-Bit 6ch DAC for DVD-Audio
GENERAL DESCRIPTION
The AK4355 offers the perfect mix for cost and performance based multi-channel audio systems. AKM's
advanced multi-bit architecture delivers a wide dynamic range and low outband noise. The AK4355 has
full differential SCF outputs, removing the need for AC coupling capacitors and increasing performance
for systems with excessive clock jitter. The 24 Bit word length and 192kHz sampling rate make this part
ideal for a wide range of application including DVD-Audio.
FEATURES
o Sampling Rate: 8kHz to 192kHz
o 24Bit 8 times Digital Filter with Slow roll-off option
o THD+N: -90dB
o DR, S/N: 106dB
o High Tolerance to Clock Jitter
o Low Distortion Differential Output
o Digital De -emphasis for 32, 44.1 & 48kHz sampling
o Zero Detect Pin
o Channel Independent Digital Attenuator with soft-transition
o Soft Mute
o I/F format: 24-Bit MSB justified, 24/20/16 -Bit LSB justified or I2S
o Master Clock
Normal Speed: 256fs, 384fs, 512fs or 768fs
Double Speed: 128fs, 192fs, 256fs or 384fs
Quad Speed: 128fs, 192fs
o Power Supply: 4.75 to 5.25V
o 28pin VSOP Package
DZF
LOUT1+
LOUT1-
ROUT1+
ROUT1-
LOUT2+
LOUT2-
ROUT2+
ROUT2-
LOUT3+
LOUT3-
ROUT3+
ROUT3-
Audio AK4355
SCF DAC DATT
I/F
SCF DAC DATT
SCF DAC DATT
SCF DAC DATT
Control
Register
SCF DAC DATT
SCF DAC DATT
MCLK
LRCK
BICK
CSN
CCLK
CDTI
SDTI1
SDTI2
SDTI3
MS0063-E-01
- 1-
2002/07
1 page  
ASAHI KASEI
[AK4355]
ANALOG CHARACTERISTICS
(Ta=25°C; AVDD, DVDD=5V; VREF=AVDD; fs=44.1kHz; BICK=64fs; Signal Frequency=1kHz; 24bit Input Data;
Measurement frequency=20Hz ∼ 20kHz; RL≥4kΩ ; unless otherwise specified)
Parameter
min typ max Units
Resolution
24 Bits
Dynamic Characteristics
(Note 4)
THD+N
fs=44.1kHz
0dBFS
-90 -86 dB
BW=20kHz
-60dBFS
-42 - dB
fs=96kHz
0dBFS
-88 -84 dB
BW=40kHz
-60dBFS
-39 - dB
fs=192kHz
0dBFS
-86 - dB
BW=40kHz
-60dBFS
-39 - dB
Dynamic Range (-60dBFS with A-weighted) (Note 5) 100 106
dB
S/N (A-weighted)
(Note 6)
100 106
dB
Interchannel Isolation (1kHz)
90 100
dB
Interchannel Gain Mismatch
0.2 0.5 dB
DC Accuracy
Gain Drift
Output Voltage
Load Resistance
(Note 7)
(Note 8)
100 - ppm/°C
±3.0 ±3.2 ±3.4 Vpp
4 kΩ
Power Supplies
Power Su pply Current (AVDD+DVDD)
Normal Operation (PDN = “H”, fs ≤96kHz)
49 75 mA
Normal Operation (PDN = “H”, fs=192kHz)
55 80 mA
Power-Down Mode (PDN = “L”)
(Note 9)
10 100 µA
Notes: 4. Measured by Audio Precision (System Two) or UPD. Refer to the evaluation board manual.
5. 100dB at 16bit data.
6. S/N does not depend on input bit length.
7. Full-scale voltage (0dB). Output voltage scales with the voltage of VREF,
AOUT (typ.@0dB)=(AOUT+)-(AOUT-)=±3.2Vpp × VREF/5.
8. For AC-load. 4kΩ for DC-load.
9. All digital inputs including clock pins (MCLK, BICK and LRCK) are held DVDD or DVSS.
MS0063-E-01
- 5-
2002/07
5 Page 
ASAHI KASEI
[AK4355]
MCLK
512fs
768fs
256fs
384fs
128fs
192fs
Sampling Speed
Normal
Double
Quad
Table 5. Sampling Speed (Auto Setting Mode)
LRCK
fs
32.0kHz
44.1kHz
48.0kHz
88.2kHz
96.0kHz
176.4kHz
192.0kHz
128fs
-
-
-
-
-
22.5792
24.5760
192fs
-
-
-
-
-
33.8688
36.8640
MCLK (MHz)
256fs
384fs
--
--
--
22.5792 33.8688
24.5760 36.8640
--
--
512fs
16.3840
22.5792
24.5760
-
-
-
-
768fs
24.5760
33.8688
36.8640
-
-
-
-
Sampling Speed
Normal
Double
Quad
Table 6. System Clock Example (Auto Setting Mode)
n Audio Serial Interface Format
Data is shifted in via these SDTI1, SDTI2,and SDTI3 pins using BICK and LRCK inputs.The DIF0-2 as shown in Table7 can
select five serial data modes . In all modes the serial data is MSB-first,2 ’s compliment format and is latched on the rising edge
of BICK. Mode 2 can be used for 16/20 MSB justified formats by zeroing the unused LSBs.
Mode
0
1
2
3
4
DIF2
0
0
0
0
1
DIF1
0
0
1
1
0
DIF0
0
1
0
1
0
SDTI Format
16bit LSB Justified
20bit LSB Justified
24bit MSB Justified
24bit I2S Compatible
24bit LSB Justified
BICK
≥32fs
≥40fs
≥48fs
≥48fs
≥48fs
Figure
Figure 1
Figure 2
Figure 3
Figure 4
Figure 2
Default
Table 7. Audio Data Formats
LRCK
BICK
(32fs)
SDTI
Mode 0
BICK
(64fs)
SDTI
Mode 0
01
10 11 12 13 14 15 0 1
15 14
01
6 5 4 3 2 1 0 15 14
14 15 16 17
31 0 1
Don’t care
15 14
15:MSB, 0:LSB
Lch Data
0 Don’t care
Figure 1. Mode 0 Timing
10 11 12 13 14 15 0 1
6 5 4 3 2 1 0 15 14
14 15 16 17
31 0 1
15 14
0
Rch Data
MS0063-E-01
- 11 -
2002/07
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet AK4355.PDF ] | |
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