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參數資料
型號: TLV320DAC3120IRHBT
廠商: TEXAS INSTRUMENTS INC
元件分類: DAC
英文描述: SERIAL INPUT LOADING, 24-BIT DAC, PQCC32
封裝: 5 X 5 MM, PLASTIC, QFN-32
文件頁數: 24/110頁
文件大小: 1230K
代理商: TLV320DAC3120IRHBT
SLAS659 – NOVEMBER 2009
www.ti.com
DOSR = 384, Processing Block = PRB_P12 (Interpolation Filter B)
Power consumption = 14.42 mW
Table 5-4. PRB_P12 Alternative Processing Blocks, 14.42 mW
Processing Block
Filter
Estimated Power Change (mW)
PRB_P4
A
0.16
PRB_P5
A
0.3
PRB_P6
A
0.2
PRB_P13
B
0.15
PRB_P14
B
0.07
PRB_P15
B
0.18
PRB_P16
B
0.09
5.5
Analog Signals
The TLV320DAC3120 analog signals consist of:
Microphone bias (MICBIAS)
Analog inputs AIN1 and AIN2, which can be used to pass-through or mix analog signals to output
stages
Analog outputs class-D speaker driver and headphone/lineout driver providing output capability for the
DAC, AIN1, AIN2, or a mix of the three
5.5.1
MICBIAS
The TLV320DAC3120 includes a microphone bias circuit which can source up to 4 mA of current, and is
programmable to a 2-V, 2.5-V, or AVDD level. The level can be controlled by writing to page 1 /
register 46, bits D1–D0. This functionality is shown in Table 5-5.
Table 5-5. MICBIAS Settings
D1
D0
FUNCTIONALITY
0
MICBIAS output is powered down.
0
1
MICBIAS output is powered to 2 V.
1
0
MICBIAS output is powered to 2.5 V.
1
MICBIAS output is powered to AVDD.
During normal operation, MICBIAS can be set to 2.5 V for better performance. However, depending on the
model of microphone that is selected, optimal performance might be obtained at another setting, so the
performance at a given setting should be verified.
The lowest current consumption occurs when MICBIAS is powered down. The next-lowest current
consumption occurs when MICBIAS is set at AVDD.
5.5.2
Analog Inputs AIN1 and AIN2
AIN1 (pin 13) and AIN2 (pin 14) are inputs to the output mixer along with the DAC output. Page 1 /
register 36 provides control signals for determining the signals routed through the output mixer. The output
of the output mixer then can be attenuated or amplified through the class-D and/or headphone/lineout
drivers.
20
APPLICATION INFORMATION
Copyright 2009, Texas Instruments Incorporated
Product Folder Link(s): TLV320DAC3120
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相關代理商/技術參數
參數描述
TLV320DAC3120IRHBT 制造商:Texas Instruments 功能描述:D/A Converter (D-A) IC 制造商:Texas Instruments 功能描述:IC, DAC, 32BIT, 192KSPS, QFN-32
TLV320DAC32 制造商:BB 制造商全稱:BB 功能描述:LOW POWER STEREO AUDIO DAC FOR PORTABLE AUDIO/TELEPHONY
TLV320DAC3202 制造商:TI 制造商全稱:Texas Instruments 功能描述:LOW POWER HIGH FIDELITY I2S INPUT HEADSET IC
TLV320DAC3202BYZJR 功能描述:音頻數/模轉換器 IC Lo Pwr Hi Fidelity I2S Input Headset IC RoHS:否 制造商:Texas Instruments 轉換器數量: 分辨率:16 bit 接口類型:I2S, UBS 轉換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel
TLV320DAC3202CYZJR 功能描述:音頻放大器 Low Pwr Hi Fidelity I2S Input Headset IC RoHS:否 制造商:STMicroelectronics 產品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
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