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參數(shù)資料
| 型號(hào)： | AKD4381 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 英文描述： | 108DB 192KHZ 24-BIT 2CH DAC |
| 中文描述： | 108DB 192kHz的24位2聲道數(shù)模轉(zhuǎn)換器 |
| 文件頁數(shù)： | 19/21頁 |
| 文件大?。?/td> | 232K |
| 代理商： | AKD4381 |
ASAHI KASEI
[AK4381]
MS0152-E-00
2002/5
- 19 -
1. Grounding and Power Supply Decoupling
VDD and VSS are supplied from analog supply and should be separated from system digital supply. Decoupling capacitor,
especially 0.1
μ
F ceramic capacitor for high frequency should be placed as near to VDD as possible. The differential
Voltage between VDD and VSS pins set the analog output range.
2. Analog Outputs
The analog outputs are full-differential outputs and 0.55 x VDD Vpp (typ) centered around the internal common voltage
(about AVDD/2). The differential outputs are summed externally, V
AOUT
=(AOUT+)-(AOUT-) between AOUT+ and
AOUT-. If the summing gain is 1, the output range is 5.5Vpp (typ @VREFH=5V). The bias voltage of the external
summing circuit is supplied externally. The input data format is 2’s complement. The output voltage (V
AOUT
) is a positive
full scale for 7FFFFF (@24bit) and a negative full scale for 800000H (@24bit). The ideal V
AOUT
is 0V for 000000H
(@24bit).
The internal switched-capacitor filter and external low pass filter attenuate the noise generated by the delta-sigma
modulator beyond the audio passband. DC offset on AOUT+/- is eliminated without AC coupling since the analog outputs
are differential. Figure 10 and 11 show the example of external op-amp circuit summing the differential outputs.
4.7k
4.7k
R1
4.7k
R1
4.7k
470p
Vop
470p
Vop
1k
1k
47u
0.1u
BIAS
AOUT-
AOUT+
3300p
When R1=200
fc=93.2kHz, Q=0.712, g=-0.1dB at 40kHz
When R1=180
fc=98.2kHz, Q=0.681, g=-0.2dB at 40kHz
Analog
Out
Figure 10. External 2
nd
order LPF Circuit Example (using op-amp with single power supply)
4.7k
4.7k
R1
4.7k
R1
4.7k
470p
+Vop
470p
-Vop
AOUT-
AOUT+
3300p
When R1=200
fc=93.2kHz, Q=0.712, g=-0.1dB at 40kHz
When R1=180
fc=98.2kHz, Q=0.681, g=-0.2dB at 40kHz
Analog
Out
Figure 11. External 2
nd
order LPF Circuit Example (using op-amp with dual power supplies)
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PDF描述 |
|---|---|
| AK4381 | AB 3C 3#16 PIN RECP |
| AK4381VT | AB 3C 3#16 PIN WALL MT RECEP |
| AKD4382 | Circular Connector; No. of Contacts:22; Series:MS27484; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:12; Circular Contact Gender:Socket; Circular Shell Style:Straight Plug; Insert Arrangement:12-35 RoHS Compliant: No |
| AKD4386 | ECONOLINE: REC3-S_DRW(Z)/H4,H6 - Safety standards and approval: EN 60950 certified, rated for 250VAV (LVD test report)- Applied for Ul 1950 Component Recognised Certification- 3W DIP Package- 4kVDC & 6kVDC Isolation- Regulated Output- Continuous Short Circiut Protection Auto-Restarting |
| AK4386 | 100DB 96KHZ 24 BIT 2CH |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AKD4382 | 制造商:AKM 制造商全稱:AKM 功能描述:112dB 192kHz 24-BIT SCH DAC |
| AKD4382A-SB | 制造商:AKM 制造商全稱:AKM 功能描述:192kHz sampling 24Bit ツヒ DAC |
| AKD4383 | 制造商:AKM 制造商全稱:AKM 功能描述:192kHz 24-Bit 2ch ∆ DAC with DSD input |
| AKD4384 | 制造商:AKM 制造商全稱:AKM 功能描述:106dB 192kHz 24-Bit 2ch ツヒ DAC |
| AKD4384-SC | 制造商:AKM 制造商全稱:AKM 功能描述:192kHz sampling 24Bit ツヒ DAC |
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