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PDF AK4452 Data sheet ( Hoja de datos )
| Número de pieza | AK4452 | |
| Descripción | 115dB 768kHz 32-bit 2ch Premium DAC | |
| Fabricantes | AKM | |
| Logotipo |  |
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[AK4452]
= Preliminary =
AK4452
115dB 768kHz 32-bit 2ch Premium DAC
1. General Description
The AK4452 is a 32-bit 2ch Premium DAC, which achieves industry’s best low distortion characteristics by a
newly developed low distortion technology. It corresponds to a 768kHz PCM input and an 11.2MHz DSD
input at maximum, suitable for play backing high resolution audio sources that are becoming widespread in
network audios, USB-DACs and Car Audio Systems. In addition, “OSR-Doubler” technology is newly
adopted, making the AK4452 capable of supporting wide range signals and achieving low out-of-band noise
while realizing low power consumption. Moreover, the AK4452 has five types of 32-bit digital filters,
realizing simple and flexible sound making in wide range of applications.
Application: AV Receivers, CD/SACD Players, Network Audios, USB DACs, USB Headphones, Sound
Plate/Bars, Car Audios, Automotive External Amplifiers, Measuring Instruments and Control
Systems.
2. Features
(1) 256x Over sampling
(2) Sampling Rate: 8kHz 768kHz
(3) 32Bit 8x Digital Filter
- Ripple: 0.0032dB, Attenuation: 80dB
- High Quality Sound Short Delay Option; GD=6.25/fs and GD=5.3/fs
- Sharp Roll-Off Filter
- Slow Roll-Off Filter
- Super Slow Roll Off
(4) High Tolerance to Clock Jitter
(5) Low Distortion Differential Output
(6) DSD data input
(7) Daisy Chain
(8) Digital De-emphasis for 32, 44.1, 48kHz sampling
(9) Soft Mute
(10) Digital Attenuator (255 levels and 0.5dB step)
(11) Stereo Mode
(12) THD+N: -107dB
(13) DR, S/N: 115dB
(14) I/F Format:
- 24/32bit MSB justified
- 16/20/24/32bit
- LSB justified
- I2S
- DSD
- TDM
(15) 3-wire Serial and I2C μP I/F
(16) Master Clock:
- 30kHz ~ 32kHz: 1152fs
- 30kHz ~ 54kHz: 512fs or 768fs
- 30kHz ~ 108kHz: 256fs or 384fs
- 108kHz ~ 216kHz: 128fs or 192fs
~ 384kHz:64fs or 128fs
~ 768kHz:64fs
Rev. 0.1
2014/04
-1-
1 page  
[AK4452]
■ Block Diagram
4. Block Diagram and Functions
BICK/DCLK
LRCK/DSDL1
SDTI1/DSDR1
TST!
TST2
LDOE
TVDD
VDD18 DVSS
LDO
PCM
Data
Interface
De-empha
sis
DATT
Soft Mute
DSD Filter
PDN
8X
Interpolator
DATT
Soft Mute
Modulator
Noise
Rejection
Filter
AVDD AVSS
Bias
SCF
Vref
SCF
DSD
Data
Interface
DZF
CAD1/SMUTE
TDMO1
I2C
CAD0_I2C/ CSN
SCL/ CCLK/TDM1
SDA/ CDTI/TDM0
Control
Register
CAD0_SPI
Clock
Divider
MCLK
AOUTLP1
AOUTLN1
VREFH1
VREFL1
AOUTRP1
AOUTRN1
TST3
TST4
TST5
TST6
TST7
TST8
Figure 1. Block Diagram
Rev. 0.1
2014/04
-5-
5 Page 
[AK4452]
8. Electrical Characteristics
■ Analog Characteristics
(1) AVDD = 5.0V
(Ta=25C: TVDD=3.3V, AVDD=5.0V: AVSS= DVSS=0V: VREFH1=AVDD, VREFL1= AVSS:
fs=44.1kHz: BICK=64fs: Signal Frequency=1kHz: 24-bit Input Data: RL 2k: measurement bandwidth =
20Hz ~ 20kHz: External Circuit: (Figure 79), unless otherwise specified.)
Parameter
min typ max Unit
Resolution
- - 32 bit
Dynamic Characteristics (Note 10)
THD+N
fs=44.1kHz 0dBFS
BW=20kHz 60dBFS
- -107 -100 dB
- -52 - dB
fs=96kHz 0dBFS
- -104 - dB
BW=40kHz 60dBFS
- -49 - dB
fs=192kHz 0dBFS
-104 - dB
BW=40kHz 60dBFS
-49 - dB
BW=80kHz 60dBFS
-46 - dB
Dynamic Range (60dBFS with A-weighted) (Note 11) 111
115
-
dB
S/N (A-weighted)
(Note 12) 111
115
-
dB
Interchannel Isolation (1kHz)
100 110 - dB
DC Accuracy
Interchannel Gain Mismatch
Gain Drift
Output Voltage
Load Resistance
Load Capacitance
- 0 0.3 dB
(Note 13)
-
20
- ppm/C
(Note 14) 2.65 2.8 2.95 Vpp
(Note 15)
2
-
- k
(Note 15)
-
- 30 pF
Power Supplies
Power Supply Current
Normal operation (PDN pin = “H”, input opposite phase
to each Lch and Rch)
AVDD
TVDD (fs = 44.1kHz)
TVDD (fs = 96kHz)
TVDD (fs = 192kHz)
Power down (PDN pin = “L”)
(Note 16)
AVDD+TVDD
-
-
-
-
-
11(TBD)
3(TBD)
5(TBD)
8(TBD)
15(TBD)
4(TBD)
7(TBD)
11(TBD)
1 100
mA
mA
mA
mA
A
Rev. 0.1
- 11 -
2014/04
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet AK4452.PDF ] | |
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