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PDF AK4620B Data sheet ( Hoja de datos )
| Número de pieza | AK4620B | |
| Descripción | 24-Bit 192kHz Audio CODEC | |
| Fabricantes | AKM | |
| Logotipo |  |
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ASAHI KASEI
[AK4620B]
AK4620B
24-Bit 192kHz Audio CODEC with IPGA
GENERAL DESCRIPTION
The AK4620B is a high performance 24-bit CODEC that supports up to 192kHz record and playback. The
on-board analog-to-digital converter has a high dynamic range due to AKM’s Enhanced Dual-Bit
architecture. The DAC utilizes AKM’s Advanced Multi-Bit architecture that achieves low out-of-band noise
and high jitter tolerance through the use of Switched Capacitor Filter (SCF) technology. The AK4620B has
an input Programmable Gain Amplifier and is ideal for Pro Audio sound cards, Digital Audio Workstations,
DVD-R, hard disk, CD-R recording/playback systems, and musical instrument recording.
FEATURES
• 24-bit 2-channel ADC
- Selectable Single-ended or Differential Input
- High Performance Linear Phase Digital Anti-Alias Filter
Passband: 0 ~ 20.25kHz (@fs=44.1kHz)
Ripple: ± 0.005dB
Stopband Attenuation: 100dB
- S/(N+D): 90dB (single-ended)
100dB (differential)
- S/N: 110dB (single-ended)
113dB (differential)
- Digital High-pass Filter for Offset Cancellation
- Input PGA: 0dB to +18dB, 0.5dB/step (for single-ended input)
- Input Digital Attenuator: 0dB to – 63dB, 0.5dB/step
- Overflow Flag
- Audio Interface Format: MSB justified or I2S
• 24-bit 2-channel DAC
- 24-bit 8 times Oversampling Linear Phase Digital Filter
Ripple: ±0.005dB
Stopband Attenuation: 75dB
- Switched-cap Low Pass Filter
- Differential Outputs
- S/(N+D): 97dB
- S/N: 115dB
- De-emphasis for 32kHz, 44.1kHz, 48kHz Sampling
- Output Digital Attenuator: Linear 255 steps
- Soft Mute
- Zero Detection Function
- Audio interface format: MSB justified, LSB justified, I2S, or DSD
• High Jitter Tolerance
• Sampling Rate: Up to 216kHz
• µP Interface: 3-wire Serial Interface
• Master Clock
- 128fs/192fs/256fs/384fs/512fs/768fs/1024fs
• Power Supply: 5V ± 5%(Analog), 3V~3.6V with 5V tolerant I/O(Digital)
• Small 30-pin VSOP package
• Ta: -10 to 70 °C
MS0401-E-00
-1-
2005/07
Free Datasheet http://www.Datasheet4U.com
1 page  
ASAHI KASEI
[AK4620B]
PIN/FUNCTION (Continued)
24 VT
25 VD
26 DGND
27 AOUTL-
28 AOUTL+
29 AOUTR-
30 AOUTR+
- Input Buffer Tolerant Pin, 3.0 ∼ 5.25V
- Digital Power Supply Pin, 3.0 ∼ 3.6V
- Digital Ground Pin
O Lch Negative Analog Output Pin
O Lch Positive Analog Output Pin
O Rch Negative Analog Output Pin
O Rch Positive Analog Output Pin
Note. Do not allow digital input pins (P/S, MCLK, LRCK/DSDR, BICK/DCLK, SDTI/DSDL, CDTI/CKS0,
CCLK/CKS1, CSN/DIF, DFS0, PDN, DEM0 and ADMODE pins) to float.
Handling of Unused Pin
The unused I/O pin should be processed appropriately as below.
Classification
Analog Input
Analog Output
Digital Input
Digital Output
Pin Name
AINL+, AINL-/NC, AINR+, AINR+NC
AINL+, AINL-/NC
AINR+, AINR-/NC
AOUTL+, AOUTL-, AOUTR+,
AOUTR-
DEM0
OVFL/DZFL, OVFR/DZFR
Setting
These pins should be open when ADMODE pin = “L”.
AINL+ pin is connected to AINL-/NC pin when
ADMODE pin = “H”.
AINR+ pin is connected to AINR-/NC pin when
ADMODE pin = “H”.
These pins should be open.
This pin should be connected to DVSS.
These pins should be open.
MS0401-E-00
-5-
2005/07
Free Datasheet http://www.Datasheet4U.com
5 Page 
ASAHI KASEI
[AK4620B]
DAC SLOW ROLL-OFF FILTER CHARACTERISTICS (fs = 44.1kHz)
(Ta = 25°C; VA=4.75 ∼ 5.25V; VD=3.0 ∼ 3.6V, VT=3.0 ∼ 5.25V; fs = 44.1kHz; Normal Speed Mode; DEM = OFF;
SLOW = “1”)
Parameter
Symbol
min
typ
max Units
Digital Filter
Passband
±0.04dB (Note 21)
-3.0dB
PB
0 8.1 kHz
- 18.2 - kHz
Stopband
Passband Ripple
(Note 21)
SB
PR
39.2
± 0.005
kHz
dB
Stopband Attenuation
SA 72
dB
Group Delay
(Note 20)
GD
-
28
- 1/fs
Digital Filter + SCF
Frequency Response: 0 ∼ 20.0kHz
- +0/-5 -
dB
DAC SLOW ROLL-OFF FILTER CHARACTERISTICS (fs = 96kHz)
(Ta = 25°C; VA=4.75 ∼ 5.25V; VD=3.0 ∼ 3.6V, VT=3.0 ∼ 5.25V; fs = 96kHz; Double Speed Mode; DEM = OFF; SLOW
= “1”)
Parameter
Symbol
min
typ
max Units
Digital Filter
Passband
±0.04dB (Note 21)
PB
0
17.7 kHz
-3.0dB
- 39.6 - kHz
Stopband
(Note 21)
SB
85.3
kHz
Passband Ripple
PR
± 0.005
dB
Stopband Attenuation
SA 72
dB
Group Delay
(Note 20)
GD
-
28
- 1/fs
Digital Filter + SCF
Frequency Response: 0 ∼ 40.0kHz
- +0/-4 -
dB
DAC SLOW ROLL-OFF FILTER CHARACTERISTICS (fs = 192kHz)
(Ta = 25°C; VA=4.75 ∼ 5.25V; VD=3.0 ∼ 3.6V, VT=3.0 ∼ 5.25V; fs = 192kHz; Quad Speed Mode; DEM = OFF; SLOW
= “1”)
Parameter
Symbol
min
typ
max Units
Digital Filter
Passband
±0.04dB (Note 21)
PB
0
35.5 kHz
-3.0dB
- 79.1 - kHz
Stopband
(Note 21)
SB
171
kHz
Passband Ripple
PR
± 0.005
dB
Stopband Attenuation
SA 72
dB
Group Delay
(Note 20)
GD
-
28
- 1/fs
Digital Filter + SCF
Frequency Response: 0 ∼ 80.0kHz
- +0/-5 -
dB
Note 21. The passband and stopband frequencies scale with fs.
For example, PB = 0.185×fs (@±0.04dB), SB = 0.888×fs.
MS0401-E-00
- 11 -
2005/07
Free Datasheet http://www.Datasheet4U.com
11 Page | ||
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| PDF Descargar | [ Datasheet AK4620B.PDF ] | |
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