|
|
PDF AK4319A Data sheet ( Hoja de datos )
| Número de pieza | AK4319A | |
| Descripción | 18Bit SCF DAC | |
| Fabricantes | AKM | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de AK4319A (archivo pdf) en la parte inferior de esta página. Total 18 Páginas | ||
|
No Preview Available !
www.DataSheet4U.com
ASAHI KASEI
[AK4319A]
AK4319A
18Bit SCF DAC
General Description
The AK4319A is a high performance 1bit stereo DAC for digital audio systems. A 1bit DAC can achieve
monotonicity and low distortion with no adjustment. On chip SCF filter makes the device less affected to the
clock jitter and also suppresses the undesirable radio emission noise. The device equips differentially
configurated output pins, but either of the pins can be used as single-end. The AK4319A achieves lower Out-
band noise characteristic and it is suitable for digital broadcasting tuner and other digital audio applications.
Features
Sampling Rate Ranging from 8kHz to 54kHz
128 times Oversampling
18bit 8 times Digital Filter
2nd order SCF with High Tolerance to Clock Jitter
Differential outputs(Single-end use is available)
Digital de-emphasis for 32, 44.1, 48kHz sampling
Soft mute
I/F format : MSB justified, LSB justified, IIS
THD+N: -87dB
DR: 92dB
Master Clock: 256fs or 384fs
Power supply: 4.5 to 5.5V
Small Package: 24pin SSOP
AK4319 Compatible
M0011-E-01
-1-
1998/6
1 page  
ASAHI KASEI
[AK4319A]
ANALOG CHARACTERISTICS
(Ta=25°C; AVDD,DVDD=5.0V; fs=44.1kHz; BICK=64fs; Signal Frequency=1kHz; 18bit Input Data;
Measurement Bandwidth=10Hz∼20kHz; RL≥5kΩ; unless otherwise specified)
Parameter
Resolution
Dynamic Characteristics
(Note 3 )
THD+N
(0dB Output)
Dynamic Range (-60dB Output, A weight)
S/N (A weight)
Interchannel Isolation(1kHz)
Interchannel Gain Mismatch
DC Accuracy
Gain Drift
Output Voltage
(Note 4 )
Load Resistance
Output Current
Power Supplies
Power Supply Current
Normal Operation (PD="H")
AVDD
DVDD
Power-Down-Mode (PD="L")
AVDD+DVDD
(Note 5 )
Power Dissipation (AVDD+DVDD)
Normal Operation
Power-Down-Mode
(Note 5 )
min
88
88
90
±2.60
5
typ
-87
92
92
100
0.15
100
±2.80
13
4
10
85
50
max Units
18 Bits
-80 dB
dB
dB
dB
0.3 dB
-
±3.00
300
ppm/°C
Vpp
kΩ
uA
20 mA
7 mA
uA
135 mW
uW
Power Supply Rejection
(Note 6 )
40
dB
Notes: 3. Measured by AD725C(SHIBASOKU). Averaging mode. Refer to the eva board manual.
4. Full-scale voltage(0dB). When summing the differential outputs by unity gain,
AOUT(typ.@0dB)=(AOUT+)-(AOUT-)= ±2.80Vpp*VREF/5.
5. In the power-down mode, all digital input pins including clock pins(XTI,,BICK,LRCK) are
held DVDD or DVSS.
6. PSR is applied to AVDD,DVDD with 1kHz, 100mVpp.
M0011-E-01
-5-
1998/6
5 Page 
ASAHI KASEI
De-emphasis filter
[AK4319A]
The AK4319A includes the digital de-emphasis filter(tc=50/15us) by IIR filter. This filter corresponds to
three sampling frequencies(32kHz,44.1kHz,48kHz). De-emphasis is enabled by the following two ways.
DEM1
0
0
1
DEM0
0
1
0
Mode
44.1kHz
OFF
48kHz
1 1 32kHz
Table 3 . De-emphasis filter control
Zero detection
After the input data at both channels are continuously zeros for 8192 LRCK cycles or when the muting
period exceeds 8192+1022 LRCK cycles, DZF goes to "H". DZF goes "L" immediately after non zero
data is input or soft mute is released.
Soft mute operation
When SMUTE goes "H", the output signal is attenuated into -∞ during 1022 LRCK cycles. SMUTE is
returned to "L", the mute condition is released and the output attenuation gradually changes to 0dB
during 1022 LRCK cycles. If the soft mute is released within 1022LRCK cycles, the attenuation is
recovered to 0dB with same gradient and cycles.
The soft mute function is effective when changing the signal source without stopping the signal
transmission.
Notes:
{1 The output signal is attenuated into -∞ during 1022 LRCK cycles(1022/fs).
{2 Analog output corresponding to digital input have the group delay(GD).
{3 If the soft mute is released within 1022 LRCK cycles, the attenuation is recovered to 0dB.
{4 When the input data at both channels are continuously zeros for 8192 LRCK cycles, DZF goes to
"H". DZF goes "L" immediately after non-zero data is input.
Figure 6 . Soft mute and zero detection
M0011-E-01
- 11 -
1998/6
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet AK4319A.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| AK4319A | 18Bit SCF DAC | AKM |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |