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PDF AKD5381 Data sheet ( Hoja de datos )
| Número de pieza | AKD5381 | |
| Descripción | 24Bit 96kHz ADC | |
| Fabricantes | Asahi Kasei Microsystems | |
| Logotipo |  |
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ASAHI KASEI
[AK5381]
AK5381
24Bit 96kHz ∆Σ ADC
GENERAL DESCRIPTION
The AK5381 is a stereo A/D Converter with wide sampling rate of 4kHz ∼ 96kHz and is suitable for
High-end audio system. The AK5381 achieves high accuracy and low cost by using Enhanced dual bit ∆Σ
techniques. The AK5381 requires no external components because the analog inputs are single-ended.
The audio interface has two formats (MSB justified, I2S) and can correspond to many systems like music
instrument and AV receiver.
FEATURES
Stereo ∆Σ ADC
On-Chip Digital Anti-Alias Filtering
Single-ended Input
Digital HPF for DC-Offset cancel
S/(N+D): 96dB@5V for 48kHz
DR:
106dB@5V for 48kHz
S/N:
106dB@5V for 48kHz
Sampling Rate Ranging from 4kHz to 96kHz
Master Clock:
256fs/384fs/512fs/768fs (∼ 48kHz)
256fs/384fs
(∼ 96kHz)
Audio Interface: Master or Slave Mode selectable
Input level: TTL/CMOS selectable
AK5381 does not support TTL level mode at fs=48kHz to 96kHz.
Output format: 24bit MSB justified / I2S selectable
Power Supply: 4.5 ∼ 5.5V (VA)
2.7 ∼ 5.5V (VD at 48kHz)
3.0 ∼ 5.5V (VD at 96kHz)
Ta = −40 ∼ 85°C (VT), −20 ∼ 85°C (ET)
Small 16pin TSSOP Package
AK5380 Pin-compatible
VA AGND VD DGND
MCLK
AINL
AINR
VCOM
∆Σ
Modulator
∆Σ
Modulator
Voltage Reference
Decimation
Filter
Decimation
Filter
Clock Divider
Serial I/O
Interface
LRCK
SCLK
SDTO
CKS2 CKS1 CKS0
PDN
DIF
MS0200-E-02
-1-
2006/01
1 page  
ASAHI KASEI
[AK5381]
ANALOG CHARACTERISTICS
(Ta=25°C; VA=VD=5.0V; AGND=DGND=0V; fs=48kHz, 96kHz; SCLK=64fs; Signal Frequency=1kHz; 24bit Data;
Measurement frequency=20Hz ∼ 20kHz at fs=48kHz, 40Hz ∼ 40kHz at fs=96kHz; unless otherwise specified)
Parameter
min typ max Units
ADC Analog Input Characteristics:
Resolution
Input Voltage
(Note 4)
S/(N+D)
(−1dBFS)
fs=48kHz
fs=96kHz
DR
(−60dBFS)
fs=48kHz, A-weighted
fs=96kHz
S/N fs=48kHz, A-weighted
fs=96kHz
Input Resistance
fs=48kHz
fs=96kHz
Interchannel Isolation
Interchannel Gain Mismatch
Gain Drift
Power Supply Rejection
(Note 5)
2.7
88
82
100
94
100
94
10
6
90
24 Bits
3.0 3.3 Vpp
96 dB
90 dB
106 dB
102 dB
106 dB
102 dB
15 kΩ
9 kΩ
110 dB
0.1 0.5 dB
100 150 ppm/°C
50 - dB
Power Supplies
Power Supply Current
Normal Operation (PDN pin = “H”)
VA 16 24 mA
VD (fs=48kHz)
8 12 mA
VD (fs=96kHz)
14 21 mA
Power down mode (PDN pin = “L”)
VA+VD
(Note 6)
10 100 µA
Note 4. This value is the full scale (0dB) of the input voltage. Input voltage is proportional to VA voltage.
Vin = 0.6 x VA (Vpp).
Note 5. PSR is applied to VA and VD with 1kHz, 50mVpp.
Note 6. All digital input pins are held VD or DGND.
MS0200-E-02
-5-
2006/01
5 Page 
ASAHI KASEI
[AK5381]
LRCK
SCLK
SDTO
PDN
SDTO
PDN
tMSLR
dSCK
tSSD
Audio Interface Timing (Master mode)
tPDV
tPD
Power Down & Reset Timing
50%VD
50%VD
50%VD
VIH
VIL
50%VD
VIL
MS0200-E-02
- 11 -
2006/01
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet AKD5381.PDF ] | |
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