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參數(shù)資料
| 型號： | AK4387 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 英文描述： | 106dB 192kHz 24-Bit 2ch ツヒ DAC |
| 中文描述： | 一零六分貝192kHz的24位2通道ツヒ數(shù)模轉(zhuǎn)換器 |
| 文件頁數(shù)： | 19/21頁 |
| 文件大?。?/td> | 257K |
| 代理商： | AK4387 |
ASAHI KASEI
[AK4387]
MS0429-E-00
2005/09
- 19 -
1. Grounding and Power Supply Decoupling
AVDD, DVDD 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 AVDD, DVDD
as possible. The differential Voltage between AVDD 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
2.95Vpp (typ@AVDD=5V). The phase of the analog outputs can be inverted channel independently by INVL/INVR bits.
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 11 shows an example of the external LPF with 2Vrms output.
390p
3.3k
3.0k
3.9k
470p
+Vop
3.3k
-Vop
AOUT
22u
fc=108.6kHz, Q=0.706, g=-0.08dB at 40kHz
Analog
Out
22k
Figure 11. External 2
nd
order LPF Circuit Example (using op-amp with dual power supplies)
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| 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(zhuǎn)換器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:50 系列:- 設(shè)置時(shí)間:4µs 位數(shù):12 數(shù)據(jù)接口:串行 轉(zhuǎn)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(yīng)商設(shè)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) |
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