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參數資料
型號: ADAU1401
廠商: Analog Devices, Inc.
元件分類: 數字信號處理
英文描述: SigmaDSP 28-/56-Bit Audio Processor with Two ADCs and Four DACs
中文描述: SigmaDSP的28-/56-Bit音頻處理器雙ADC和4個DAC
文件頁數: 18/52頁
文件大小: 785K
代理商: ADAU1401
ADAU1401
VOLTAGE REGULATOR
The digital voltage of the ADAU1401 must be set to 1.8 V. The
chip includes an on-board voltage regulator that allows the
device to be used in systems without an available 1.8 V supply
but with an available 3.3 V supply. The only external components
needed in such instances are a PNP transistor, a resistor, and a
few bypass capacitors. Only one pin, VDRIVE, is necessary to
support the regulator.
The recommended design for the voltage regulator is shown
in Figure 16. The 10 μF and 100 nF capacitors shown in this
configuration are recommended for bypassing, but are not
necessary for operation. Each DVDD pin should have its own
100 nF bypass capacitor, but only one bulk capacitor (10 μF to
47 μF) is needed for both DVDD pins. With this configuration,
3.3 V is the main system voltage; 1.8 V is generated at the
transistor’s collector, which is connected to the DVDD pins.
VDRIVE is connected to the base of the PNP transistor. If the
regulator is not used in the design, VDRIVE can be tied to ground.
Rev. 0 | Page 18 of 52
Two specifications must be considered when choosing a
regulator transistor: The transistor’s current amplification factor
(h
FE
or beta) should be at least 100, and the transistor’s collector
must be able to dissipate the heat generated when regulating
from 3.3 V to 1.8 V. The maximum digital current drawn from
the ADAU1401 is 60 mA. The equation to determine the
minimum power dissipation of the transistor is as follows:
(3.3 V 1.8 V) × 60 mA = 90 mW
There are many transistors, such as the FZT953 from Zetex
Semiconductors, with these specifications available in small
SOT-23 or SOT-223 packages.
3.3V
1k
VDRIVE
DVDD
10μF
100nF
ADAU1401
0
+
Figure 16. Voltage Regulator Configuration
相關PDF資料
PDF描述
ADAU1401YSTZ SigmaDSP 28-/56-Bit Audio Processor with Two ADCs and Four DACs
ADAU1401YSTZ-RL SigmaDSP 28-/56-Bit Audio Processor with Two ADCs and Four DACs
ADAU1513 Class-D Audio Power Stage
ADAU1513ACPZ Class-D Audio Power Stage
ADAU1513ACPZ-RL Class-D Audio Power Stage
相關代理商/技術參數
參數描述
ADAU1401A 制造商:AD 制造商全稱:Analog Devices 功能描述:SigmaDSP 28-/56-Bit Audio Processor with Two ADCs and Four DACs
ADAU1401AWBSTZ 功能描述:IC AUDIO PROC 28/56BIT 48LQFP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻處理 系列:SigmaDSP® 其它有關文件:STA321 View All Specifications 標準包裝:1 系列:Sound Terminal™ 類型:音頻處理器 應用:數字音頻 安裝類型:表面貼裝 封裝/外殼:64-LQFP 裸露焊盤 供應商設備封裝:64-LQFP EP(10x10) 包裝:Digi-Reel® 其它名稱:497-11050-6
ADAU1401AWBSTZ-RL 功能描述:IC AUDIO PROC 28/56BIT 48LQFP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻處理 系列:SigmaDSP® 其它有關文件:STA321 View All Specifications 標準包裝:1 系列:Sound Terminal™ 類型:音頻處理器 應用:數字音頻 安裝類型:表面貼裝 封裝/外殼:64-LQFP 裸露焊盤 供應商設備封裝:64-LQFP EP(10x10) 包裝:Digi-Reel® 其它名稱:497-11050-6
ADAU1401YSTZ 功能描述:IC AUDIO PROC 28/56BIT 48LQFP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻處理 系列:SigmaDSP® 其它有關文件:STA321 View All Specifications 標準包裝:1 系列:Sound Terminal™ 類型:音頻處理器 應用:數字音頻 安裝類型:表面貼裝 封裝/外殼:64-LQFP 裸露焊盤 供應商設備封裝:64-LQFP EP(10x10) 包裝:Digi-Reel® 其它名稱:497-11050-6
ADAU1401YSTZ-RL 功能描述:IC AUDIO PROC 28/56BIT 48LQFP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻處理 系列:SigmaDSP® 其它有關文件:STA321 View All Specifications 標準包裝:1 系列:Sound Terminal™ 類型:音頻處理器 應用:數字音頻 安裝類型:表面貼裝 封裝/外殼:64-LQFP 裸露焊盤 供應商設備封裝:64-LQFP EP(10x10) 包裝:Digi-Reel® 其它名稱:497-11050-6
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