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參數(shù)資料
| 型號： | AK4385VT |
| 廠商： | ASAHI KASEI POWER DEVICES CORP |
| 元件分類： | DAC |
| 英文描述： | 108dB 192kHz 24-Bit 2ch ツヒ DAC |
| 中文描述： | SERIAL INPUT LOADING, 24-BIT DAC, PDSO16 |
| 封裝： | 6.40 X 5 MM, 0.65 MM PITCH, LEAD FREE, PLASTIC, TSSOP-16 |
| 文件頁數(shù)： | 19/21頁 |
| 文件大小： | 285K |
| 代理商： | AK4385VT |
ASAHI KASEI
[AK4385]
MS0246-E-00
2003/07
- 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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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AK4385VTP-E2 | 制造商:AKM Semiconductor Inc 功能描述:AK4385VTP-E2 |
| AK4386 | 制造商:AKM 制造商全稱:AKM 功能描述:100DB 96KHZ 24 BIT 2CH |
| AK4386ET | 制造商:AKM 制造商全稱:AKM 功能描述:100dB 96kHz 24-Bit 2ch ???￡ DAC |
| AK4386ETP-E2 | 功能描述:IC DAC 24BIT STEREO 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) |
| AK4386VT | 制造商:AKM 制造商全稱:AKM 功能描述:100DB 96KHZ 24 BIT 2CH |
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