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PDF AK4490 Data sheet ( Hoja de datos )
| Número de pieza | AK4490 | |
| Descripción | Premium 32-Bit 2ch DAC | |
| Fabricantes | AKM | |
| Logotipo |  |
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[AK4490]
AK4490
Premium 32-Bit 2ch DAC
1. General Description
AK4490 is a new generation Premium 32-bit 2ch DAC with new technologies, achieving industry’s leading
level low distortion characteristics and wide dynamic range. The AK4490 integrates a newly developed
switched capacitor filter “OSR Doubler”, making it capable of supporting wide range signals and
achieving low out-of-band noise while realizing low power consumption. Moreover, the AK4490 has five
types of 32-bit digital filters, realizing simple and flexible sound tuning in wide range of applications. The
AK4490 accepts up to 768kHz PCM data and 11.2MHz DSD data, ideal for a high-resolution audio source
playback that are becoming widespread in network audios, USB-DACs and Car Audio Systems.
Application: AV Receivers, CD/SACD player, Network Audios, USB DACs, USB Headphones, Sound
Plates/Bars, Car Audios, Automotive External Amplifiers, Measurement Equipment, Control
Systems, Public Audios (PA), Smart Cellular Phones, IC-Recorders, Bluetooth Headphones, HD
Audio/Voice Conference Systems
2. Features
256x Over sampling
Sampling Rate: 30kHz 768kHz
32-bit 8x Digital Filter
- Ripple: 0.005dB, Attenuation: 100dB
- Short Delay Sharp Roll-off, GD=6.25/fs
- Short Delay Slow Roll-off, GD=5.3/fs
- Sharp Roll-off
- Slow Roll-off
- Super Slow Roll-off
High Tolerance to Clock Jitter
Low Distortion Differential Output
2.8MHz, 5.6MHz and 11.2MHz DSD Input Support
- Filter (fc=50kHz, fc=150kHz, 2.8MHz mode)
Digital De-emphasis for 32, 44.1, 48kHz sampling
Soft Mute
Digital Attenuator (255 levels and 0.5dB step)
Mono Mode
External Digital Filter Mode
THD+N: -112dB
DR, S/N: 120dB (Mono mode: 123dB)
I/F Format: 24/32bit MSB justified, 16/20/24/32bit LSB justified, I2S, DSD
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
Power Supply: DVDD=AVDD=3.0 3.6V, VDD1/2=4.75 7.2V
Digital Input Level: CMOS
Package: 48-pin LQFP
MS1648-E-03
-1-
2014/11
1 page  
■ Ordering Guide
AK4490EQ
AKD4490
■ Pin Layout
5. Pin Configurations and Functions
40 +85C
48pin LQFP (0.5mm pitch)
Evaluation Board for AK4490
[AK4490]
NC
VCML
VREFLL
VREFLL
VREFHL
VREFHL
NC
AVDD1
AVSS1
MCLK
DVSS
DVDD
37
38
39
40
41
42
43
44
45
46
47
48
AK4490
Top View
24 NC
23 VCMR
22 VREFLR
21 VREFLR
20 VREFHR
19 VREFHR
18 NOCUTRP
17 ACKS/CAD1
16 DEM1
15 DEM0
14 I2C
13 PSN
MS1648-E-03
-5-
2014/11
5 Page 
[AK4490]
■ Sharp Roll-Off Filter Characteristics (fs=44.1kHz)
(Ta=25C; AVDD=DVDD=3.0~3.6V, VREFHL/R=VDDL/R=4.75 7.2V; Normal Speed Mode;
DEM=OFF; SD bit=“0” or SD pin = “L”, SLOW bit=“0” or SLOW pin = “L”)
Parameter
Symbol
min
typ
max
Digital Filter
Passband
(Note 13) 0.01dB
6.0dB
PB
0 20.0
- 22.05 -
Stopband
Passband Ripple
(Note 13)
SB
PR
24.1
0.005
Stopband Attenuation
SA 100
Group Delay
(Note 14) GD - 29.4 -
Digital Filter + SCF
Frequency Response: 0 20.0kHz
- +0.1/-0.2 -
Unit
kHz
kHz
kHz
dB
dB
1/fs
dB
■ Sharp Roll-Off Filter Characteristics (fs=96kHz)
Ta=25C; AVDD=DVDD=3.0~3.6V, VREFHL/R=VDDL/R=4.75 7.2V; Double Speed Mode; DEM=OFF;
SD bit=“0” or SD pin = “L”, SLOW bit=“0” or SLOW pin = “L”)
Parameter
Symbol
min
typ
max Unit
Digital Filter
Passband
(Note 13) 0.01dB
6.0dB
PB
0 43.5 kHz
- 48.0 - kHz
Stopband
(Note 13) SB
52.5
kHz
Passband Ripple
PR
0.005
dB
Stopband Attenuation
SA 100
dB
Group Delay
(Note 14) GD - 28.8 - 1/fs
Digital Filter + SCF
Frequency Response: 0 40.0kHz
- +0.1/-0.6 -
dB
■ Sharp Roll-Off Filter Characteristics (fs=192kHz)
(Ta=25C; AVDD=DVDD=3.0~3.6V, VREFHL/R=VDDL/R=4.75 7.2V; Quad Speed Mode; DEM=OFF;
SD bit=“0” or SD pin = “L”, SLOW bit=“0” or SLOW pin = “L”)
Parameter
Symbol
min
typ
max Unit
Digital Filter
Passband
(Note 13) 0.01dB
6.0dB
PB
0 87.0 kHz
- 96.0 - kHz
Stopband
Passband Ripple
(Note 13)
SB
PR
105
0.005
kHz
dB
Stopband Attenuation
SA 92
dB
Group Delay
(Note 14) GD - 28.8 - 1/fs
Digital Filter + SCF
Frequency Response: 0 80.0kHz
- +0.1/-0.2 -
dB
Note 13. The passband and stopband frequencies scale with fs. For example, PB=0.4535×fs (@0.01dB),
SB=0.546×fs.
Note 14. The calculating delay time which occurred by digital filtering. This time is from setting the
16/20/24/32 bit data of both channels to the output of analog signal.
MS1648-E-03
- 11 -
2014/11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet AK4490.PDF ] | |
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