參數(shù)資料
型號: ADAU1701JSTZ-RL
廠商: Analog Devices Inc
文件頁數(shù): 15/53頁
文件大?。?/td> 0K
描述: IC AUDIO PROC 2ADC/4DAC 48-LQFP
設(shè)計資源: Analog Audio Input, Class-D Output with ADAU1701, SSM2306, and ADP3336 (CN0162)
標準包裝: 2,000
系列: SigmaDSP®
類型: 音頻處理器
應(yīng)用: 車載,監(jiān)視器,MP3
安裝類型: 表面貼裝
封裝/外殼: 48-LQFP
供應(yīng)商設(shè)備封裝: 48-LQFP(7x7)
包裝: 帶卷 (TR)
配用: EVAL-ADAU1701MINIZ-ND - BOARD EVAL SIGMADSP AUD ADAU1701
ADAU1701
Rev. B | Page 21 of 52
AUDIO DACs
The ADAU1701 includes four Σ-Δ DACs. The SNR of the DAC
is 104 dB, and the THD + N is 90 dB. A full-scale output on
the DACs is 0.9 V rms (2.5 V p-p).
The DACs are in an inverting configuration. If a signal inversion
from input to output is undesirable, it can be reversed either by
using an inverting configuration for the output filter or by simply
inverting the signal in the SigmaDSP program flow.
The DAC outputs can be filtered with either an active or a
passive reconstruction filter. A single-pole, passive, low-pass
filter with a 50 kHz corner frequency, as shown in Figure 18,
is sufficient to filter the DAC out-of-band noise, although an
active filter may provide better audio performance. Figure 19
shows a triple-pole, active, low-pass filter that provides a steeper
roll-off and better stop-band attenuation than the passive filter.
In this configuration, the V+ and V pins of the AD8606 op
amp are set to VDD and ground, respectively.
To properly initialize the DACs, Bits[DS<1:0>] in the DAC
setup register (Address 2087) should be set to 01.
47F
+
560
DAC_OUT
5.6nF
FILTER_OUT
064
12
-01
8
Figure 18. Passive DAC Output Filter
47F
+
604
DAC_OUT
49.9k
3.3nF
FILTER_OUT
4.75k
150pF
AD8606
C8
470F
+
0
64
12
-01
9
Figure 19. Active DAC Output Filter
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ADAU1702JSTZ 功能描述:IC AUDIO PROC 2ADC/4DAC 48-LQFP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻處理 系列:SigmaDSP® 其它有關(guān)文件:STA321 View All Specifications 標準包裝:1 系列:Sound Terminal™ 類型:音頻處理器 應(yīng)用:數(shù)字音頻 安裝類型:表面貼裝 封裝/外殼:64-LQFP 裸露焊盤 供應(yīng)商設(shè)備封裝:64-LQFP EP(10x10) 包裝:Digi-Reel® 其它名稱:497-11050-6
ADAU1702JSTZ-RL 功能描述:IC AUDIO PROC 2ADC/4DAC 48-LQFP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻處理 系列:SigmaDSP® 其它有關(guān)文件:STA321 View All Specifications 標準包裝:1 系列:Sound Terminal™ 類型:音頻處理器 應(yīng)用:數(shù)字音頻 安裝類型:表面貼裝 封裝/外殼:64-LQFP 裸露焊盤 供應(yīng)商設(shè)備封裝:64-LQFP EP(10x10) 包裝:Digi-Reel® 其它名稱:497-11050-6
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