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參數(shù)資料
| 型號： | AK4388 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 英文描述： | 192kHz 24-Bit 2ch ツヒ DAC |
| 中文描述： | 192kHz的24位2通道ツヒ數(shù)模轉換器 |
| 文件頁數(shù)： | 14/18頁 |
| 文件大?。?/td> | 198K |
| 代理商： | AK4388 |
ASAHI KASEI
[AK4388]
MS0485-E-01
2006/07
- 14 -
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 single-ended and centered around the VCOM voltage. The output signal range is typically
3.20Vpp (typ@VDD=5V). The internal switched-capacitor filter and continuous-time filter attenuate the noise generated
by the delta-sigma modulator beyond the audio passband. The output voltage is a positive full scale for 7FFFFFH
(@24bit) and a negative full scale for 800000H (@24bit). The ideal output is VCOM voltage for 000000H (@24bit).
DC offsets on analog outputs are eliminated by AC coupling since analog outputs have DC offsets of VCOM + a few mV.
Figure 8 shows an example of the external LPF with 3.20Vpp (1.13Vrms) output. Figure 9 shows an example of the
external LPF with 2Vrms output.
10u
220
AOUT
2.2nF
AK4388
22k
3.2Vpp (1.13Vrms)
Analog
Out
fc=328.8kHz, g=-0.064dB at 40kHz
Figure 8. External 1
st
order LPF Circuit Example (simple)
390p
3.9k
2.7k
3.9k
390p
+Vop
3.3k
-Vop
AOUT
10u
fc=125.8kHz, Q=0.752, g=0.058dB at 40kHz
Analog
Out
22k
AK4388
5.93Vpp (2.09Vrms)
Figure 9. External 2
nd
order LPF Circuit Example (using op-amp with dual power supplies)
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相關代理商/技術參數(shù) |
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| AK4388A | 制造商:AKM 制造商全稱:AKM 功能描述:192kHz 24-Bit 2ch ΔΣ DAC |
| AK4388AET | 制造商:AKM 制造商全稱:AKM 功能描述:192kHz 24-Bit 2ch ΔΣ DAC |
| AK4388AETP-E2 | 功能描述:IC DAC 24BIT PARALLEL 16TSSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉換器 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:50 系列:- 設置時間:4µs 位數(shù):12 數(shù)據(jù)接口:串行 轉換器數(shù)目:2 電壓電源:單電源 功率耗散（最大）:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應商設備封裝:8-uMAX 包裝:管件 輸出數(shù)目和類型:2 電壓，單極 采樣率（每秒）:* 產(chǎn)品目錄頁面:1398 (CN2011-ZH PDF) |
| AK4388ET | 制造商:AKM 制造商全稱:AKM 功能描述:192kHz 24-Bit 2ch ツヒ DAC |
| AK4388ETP-E2 | 制造商:Asahi Kasei Microsystems Co Ltd 功能描述: |
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