參數(shù)資料
型號： TLV320AIC3110IRHBR
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)： 47/126頁
文件大?。?/td> 1528K
代理商： TLV320AIC3110IRHBR
W0002-01
Decay Time
Target
Level
Input
Signal
Output
Signal
AGC
Gain
Attack
Time
www.ti.com
SLAS647 – DECEMBER 2009
Figure 5-2. AGC Characteristics
The AGC settings should be set based on user and system conditions, such as microphone selection and
sensitivity, acoustics (plastics) around the microphone which affect the microphone pattern, expected
distance and direction between microphone and sound source, acoustic background noise, etc.
One example of AGC code follows, but actual use of code should be verified based on application usage.
Note that the AGC code should be set up before powering up the ADC.
####################### AGC ENABLE EXAMPLE CODE #####################
## Switch to page 0
w 30 00 00
# Set AGC enable and Target Level = -10 dB
# Target level can be set lower if clipping occurs during speech
# Target level is adjusted considering Max Gain also
w 30 56 A0 # AGC hysteresis=DISABLE, noise threshold = -90dB
# Noise threshold should be set at higher level if noisy background is present in application
w 30 57 FE # AGC maximum gain= 40 dB
# Higher Max gain is a trade off between gaining up a low sensitivity MIC, and the background
# acoustic noise
# Microphone bias voltage (MICBIAS) level can be used to change the Microphone Sensitivity
w 30 58 50
# Attack time=864/Fs w 30 59 68
# Decay time=22016/Fs
w 30 5A A8
# Noise debounce 0 ms
# Noise debounce time can be increased if needed
w 30 5B 00
# Signal debounce 0 ms
# Signal debounce time can be increased if needed
w 30 5C 00
######################## END of AGC SET UP #################################
5.4.3
Delta-Sigma ADC
The analog-to-digital converter has a delta-sigma modulator with an oversampling ratio (AOSR) up to 128.
The ADC can support a maximum output rate of 192 kHz.
Copyright 2009, Texas Instruments Incorporated
APPLICATION INFORMATION
27
Product Folder Link(s): TLV320AIC3110
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參數(shù)描述
TLV320AIC3110IRHBT 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
TLV320AIC3111 制造商:TI 制造商全稱:Texas Instruments 功能描述:Low-Power Audio Codec With Embedded miniDSP and Stereo Class-D Speaker Amplifier
TLV320AIC3111_101 制造商:TI 制造商全稱:Texas Instruments 功能描述:Low-Power Audio Codec With Embedded miniDSP and Stereo Class-D Speaker Amplifier
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