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Número de pieza | AK4324 | |
Descripción | 96Khz Sampling 24-Bit DAC | |
Fabricantes | AKM | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de AK4324 (archivo pdf) en la parte inferior de esta página. Total 18 Páginas | ||
No Preview Available ! ASAHI KASEI
[AK4324]
AK4324
96kHz Sampling 24Bit ∆Σ DAC
General Description
The AK4324 is a high performance 1bit stereo DAC for the 96kHz sampling mode of DAT,DVD including
a 24bit digital filter. A 1bit DAC can achieve monotonicity and low distortion with no adjustment and is
superior to traditional R-2R ladder based DACs. In the AK4324, the analog outputs are filtered in the
www.DataSheet4U.caomnalog domain by switched-capacitor filter(SCF) with high tolerance to clock jitter. The digital I/F can
correspond to TTL levels.
Features
High Performance Stereo 1bit DAC
128x Oversampling
Sampling Rate up to 96kHz
24Bit 8 times Digital Filter
Ripple: ±0.005dB, Attenuation: 75dB
2nd Order SCF(LPF) with High Tolerance to Clock Jitter
Low Distortion Differential Output
Digital de-emphasis for 32, 44.1, 48kHz, 96kHz sampling
Soft Mute
I/F format : MSB justified, LSB justified, I2S
Dynamic Range: 105dB
Master Clock
Normal speed: 256fs or 384fs, Double speed: 128fs or 198fs
Power Supply: 4.5 to 5.5V
Small Package: 24pin VSOP
0168-E-01
-1-
1997/5
1 page ASAHI KASEI
[AK4324]
ANALOG CHARACTERISTICS (fs=44.1kHz)
(Ta=25°C; AVDD,DVDD=5.0V; VREF=AVDD; fs=44.1kHz; BICK=64fs;
Signal Frequency=1kHz; 24bit Input Data; Measurement Bandwidth=10Hz∼20kHz; RL≥5kΩ;
unless otherwise specified)
Parameter
min typ max Units
Resolution
24 Bits
Dynamic Characteristics (Note 4 )
THD+N
www.DataSheet4U.com
0dB Output
-20dB Output
-60dB Output
-94 -88 dB
-81 - dB
-41 - dB
Dynamic Range (-60dB Output, A weight) (Note5 ) 100
105
dB
S/N (A weight)
(Note 6 ) 100
105
dB
Interchannel Isolation(1kHz)
100 110
dB
DC Accuracy
Interchannel Gain Mismatch
0.15 0.3
dB
Gain Drift
(Note 7 )
20 - ppm/°C
DC Accuracy
Output Voltage
(Note 8 ) ±2.66 ±2.8 ±2.94 Vpp
Load Resistance
5 kΩ
Output Current
300 uA
Power Supplies
Power Supply Current
Normal Operation (PD="H")
AVDD
DVDD
Power-Down-Mode (PD="L")
AVDD+DVDD
(Note 9 )
43 64 mA
6 9 mA
10 50 uA
Power Dissipation (AVDD+DVDD)
Normal Operation
Power-Down-Mode
Power Supply Rejection
(Note 9 )
(Note 10 )
245 365 mW
50 250 uW
50 dB
Notes: 4. Measured by AD725C(SHIBASOKU). Averaging mode. Refer to the eva board manual.
5. 100dB at 16bit data and 105dB at 20bit data.
6. S/N does not depend on input bit length. 101dB at CCIR-ARM weighted.
7. The voltage on VREF pin is held +5V externally.
8. Full-scale voltage(0dB). Output voltage scales with the voltage of VREF pin.
AOUT(typ.@0dB)=(AOUT+)-(AOUT-)=±2.8Vpp*VREF/5.
9. Power Dissipation in the power-down mode is applied with no external clocks
(MCLK,BICK,LRCK held "H" or "L").
10. PSR is applied to AVDD,DVDD with 1kHz, 100mVpp. VREF pin is held +5V.
0168-E-01
-5-
1997/5
5 Page ASAHI KASEI
[AK4324]
www.DataSheet4U.com
Figure 2 . Mode 0 Timing
Figure 3 . Mode 1,4 Timing
Figure 4 . Mode 2 Timing
0168-E-01
Figure 5 . Mode 3 Timing
- 11 -
1997/5
11 Page |
Páginas | Total 18 Páginas | |
PDF Descargar | [ Datasheet AK4324.PDF ] |
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