參數(shù)資料
型號： TLV320AIC3120IRHBR
廠商： TEXAS INSTRUMENTS INC
元件分類： 音頻／視頻放大
英文描述： AUDIO AMPLIFIER, PQCC32
封裝： 5 X 5 MM, GREEN, PLASTIC, QFN-32
文件頁數(shù)： 82/150頁
文件大?。?/td> 1507K
代理商： TLV320AIC3120IRHBR
Mono ADC
CIC Filter
Signal
Processing
Blocks
GPIO1
SDIN
ADC_MOD_CLK
D
IG_MIC_IN
DOUT
D S
-
ADC
MonoData
NoData
MonoData
NoData
MonoData
NoData
ADC_MOD_CLK
DIG_MIC_IN
www.ti.com
SLAS653 – FEBRUARY 2010
Figure 5-17. Digital Microphone in the TLV320AIC3120
The TLV320AIC3120 outputs internal clock ADC_MOD_CLK on the GPIO1 pin (page 0 / register 51, bits
D5–D2 = 1010). This clock can be connected to the external digital microphone device. The single-bit
output of the external digital microphone device can be connected to the DIN pin. Internally, the
TLV320AIC3120 latches the steady value of the mono ADC data on the rising edge of ADC_MOD_CLK.
Figure 5-18. Timing Diagram for Digital Microphone Interface
When the digital microphone mode is enabled, the analog section of the ADC can be powered down and
bypassed for power efficiency. The AOSR value for the ADC channel must be configured to select the
desired decimation ratio to be achieved, based on the external digital microphone properties.
5.5.7
DC Measurement
The TLV320AIC3120 supports a highly flexible dc measurement feature using the high-resolution
oversampling and noise-shaping ADC. This mode can be used when the ADC channel is not used for the
voice/audio record function. This mode can be enabled by programming page 0 / register 102, bit D7. The
converted data is 24 bits, using the 2.22 numbering format. The value of the converted data for ADC
channel can be read back from page 0 / register 104 through page 0 / register 106. Before reading back
the converted data, page 0 / register 103, bit D6 must be programmed to 1 in order to latch the converted
data into the read-back registers. After the converted data is read back, page 0 / register 103, bit D6 must
be immediately reset to 0. In dc-measurement mode, two measurement modes are supported.
Mode A
In dc-measurement mode A, a variable-length averaging filter is used. The length of averaging filter D can
be programmed from 1 to 20 by programming page 0 / register 102, bits D4–D0. To choose mode A, page
0 / register 102, bit D5 must be programmed to 0.
Copyright 2010, Texas Instruments Incorporated
APPLICATION INFORMATION
37
Product Folder Link(s): TLV320AIC3120
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TLV320AIC3120IRHBT 功能描述:接口—CODEC Low-Pwr Audio CODEC RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel
TLV320AIC31EVM 功能描述:音頻 IC 開發(fā)工具 TLV320AIC31 Eval Mod RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V
TLV320AIC31EVM-PDK 功能描述:音頻 IC 開發(fā)工具 TLV320AIC31-PDK Eval Mod RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V
TLV320AIC31IRHBR 功能描述:接口—CODEC Lo-Pwr Ster Codec for Port Aud/Teleph RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel
TLV320AIC31IRHBRG4 功能描述:接口—CODEC Lo-Pwr Ster Codec for Port Aud/Teleph RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel
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