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參數(shù)資料
| 型號： | TLV320AIC23GQER |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | Codec |
| 英文描述： | Stereo Audio CODEC, 8-to 96-kHz, With Integrated Headphone Amplifier |
| 中文描述： | 立體聲音頻編解碼器，8到96千赫，具有集成耳機放大器 |
| 文件頁數(shù)： | 25/44頁 |
| 文件大?。?/td> | 236K |
| 代理商： | TLV320AIC23GQER |
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3
–
5
SR[3:0]
BOSR
Sampling rate control (see Sections 3.3.2.1 AND 3.3.2.2)
Base oversampling rate
USB mode:
0 = 250 f
s
Normal mode:
0 = 256 f
s
Clock mode select:
0 = Normal
Reserved
Digital Interface Activation (Address: 0001001)
1 = 272 f
s
1 = 384 f
s
1 = USB
USB/Normal
X
BIT
D8
D7
D6
D5
D4
D3
D2
D1
D0
Function
X
X
X
X
X
X
X
X
ACT
Default
0
0
0
0
0
0
0
0
0
ACT
X
Reset Register (Address: 0001111)
Activate interface
Reserved
0 = Inactive
1 = Active
BIT
D8
D7
D6
D5
D4
D3
D2
D1
D0
Function
RES
RES
RES
RES
RES
RES
RES
RES
RES
Default
0
0
0
0
0
0
0
0
0
RES
Write 000000000 to this register triggers reset
3.2
Analog Interface
3.2.1
Line Inputs
The TLV320AIC23 has line inputs for the left and the right audio channels (RLINEIN and LLINEIN). Both line inputs
have independently programmable volume controls and mutes. Active and passive filters for the two channels
prevent high frequencies from folding back into the audio band.
The line-input gain is logarithmically adjustable from 12 dB to
–
34.5 dB in 1.5-dB steps. The ADC full-scale range
is 1.0 V
RMS
at AV
DD
= 3.3 V. The full-scale range tracks linearly with analog supply voltage AV
DD
. To avoid distortions,
it is important not to exceed the full-scale range.
The gain is independently programmable on both left and right line-inputs. To reduce the number of software write
cycles required. Both channels can be locked to the same value by setting the RLS and LRS bits (see Section 3.1.3).
The line inputs are biased internally to VMID. When the line inputs are muted or the device is set to standby mode,
the line inputs are kept biased to VMID using special antithump circuitry. This reduces audible clicks that otherwise
might be heard when reactivating the inputs.
For interfacing to a CD system, the line input should be scaled to 1 V
RMS
to avoid clipping, using the circuit shown
in Figure 3-3.
R
2
R1
C1
C2
+
CDIN
LINEIN
AGND
Where:
R1 = 5 k
R2 = 5 k
C1 = 47 pF
C2 = 470 nF
Figure 3
–
3. Analog Line Input Circuit
R1 and R2 divide the input signal by two, reducing the 2 V
RMS
from the CD player to the nominal 1 V
RMS
of the AIC23
inputs. C1 filters high-frequency noise, and C2 removes any dc component from the signal.
3.2.2
Microphone Input
MICIN is a high-impedance, low-capacitance input that is compatible with a wide range of microphones. It has a
programmable volume control and a mute function. Active and passive filters prevent high frequencies from folding
back into the audio band.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TLV320AIC23IGQE | 功能描述:接口—CODEC LP Port Audio 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 |
| TLV320AIC23IGQER | 功能描述:接口—CODEC Low-Power Portable Aud Converter 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 |
| TLV320AIC23IPW | 功能描述:接口—CODEC LP Port Audio 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 |
| TLV320AIC23IPWG4 | 功能描述:接口—CODEC LP Port Audio 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 |
| TLV320AIC23IPWR | 功能描述:接口—CODEC Low-Power Portable Aud Converter 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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