參數(shù)資料
型號： TLV320AIC31IRHBTG4
廠商： Texas Instruments
文件頁數(shù)： 29/84頁
文件大?。?/td> 0K
描述： IC STEREO AUDIO CODEC LP 32-VQFN
標(biāo)準(zhǔn)包裝： 250
類型： 立體聲音頻
數(shù)據(jù)接口： PCM 音頻接口
分辨率（位）： 24 b
ADC / DAC 數(shù)量： 2 / 2
三角積分調(diào)變： 是
S/N 比，標(biāo)準(zhǔn) ADC / DAC (db)： 92 / 100
動態(tài)范圍，標(biāo)準(zhǔn) ADC / DAC (db)： 92 / 100
電壓 - 電源，模擬： 2.7 V ~ 3.6 V
電壓 - 電源，數(shù)字： 1.65 V ~ 1.95 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 32-VFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝： 32-QFN 裸露焊盤（5x5）
包裝： 帶卷 (TR)
配用： 296-19476-ND - KIT EVAL/DEMO FOR TLV320AIC31
296-19475-ND - MODULE EVAL FOR TLV320AIC31
VOLUME
CONTROLS,
MIXING
PGA_L
PGA_R
DAC_L1
DAC_R1
DAC_L3
LEFT_LOP
LEFT_LOM
Gain=0dBto+9dB,
Mute
PGA_L
PGA_R
DAC_L1
DAC_R1
DAC_R3
RIGHT_LOP
RIGHT_LOM
Gain=0dBto+9dB,
Mute
DAC_L
DAC_L1
DAC_L2
DAC_L3
DAC_R
DAC_R1
DAC_R2
DAC_R3
STEREO
AUDIO
DAC
VOLUME
CONTROLS,
MIXING
0dBto
-78dB
0dBto
-78dB
0dBto
-78dB
0dBto
-78dB
+
PGA_L
PGA_R
DAC_L1
DAC_R1
www.ti.com ............................................................................................................................................. SLAS497C – AUGUST 2006 – REVISED DECEMBER 2008
Figure 29. Architecture of the Output Stage Leading to the Fully Differential Line Output Drivers
Figure 30. Detail of the Volume Control and Mixing Function Shown in Figure 25 and Figure 16
The DAC_L/R signals are the outputs of the stereo audio DAC, which can be steered by register control based
on the requirements of the system. If mixing of the DAC audio with other signals is not required, and the DAC
output is only needed at the stereo line outputs, then it is recommended to use the routing through path
DAC_L3/R3 to the fully differential stereo line outputs. This results not only in higher quality output performance,
but also in lower power operation, since the analog volume controls and mixing blocks ahead of these drivers
can be powered down. This connection path will attenuate the signal by a factor of 1 dB.
If instead the DAC analog output must be routed to multiple output drivers simultaneously (such as to
LEFT_LOP/M, and RIGHT_LOP/M) or must be mixed with other analog signals, then the DAC outputs should be
switched through the DAC_L1/R1 path. This option provides the maximum flexibility for routing of the DAC
analog signals to the output drivers
Copyright 2006–2008, Texas Instruments Incorporated
35
Product Folder Link(s): TLV320AIC31
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