- 您现在的位置：买卖IC网 > PDF目录98302 > TSC2300IPAGRG4 (TEXAS INSTRUMENTS INC) SPECIALTY CONSUMER CIRCUIT, PQFP64 PDF资料下载
参数资料
| 型号： | TSC2300IPAGRG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| 封装： | GREEN, PLASTIC, TQFP-64 |
| 文件页数： | 61/83页 |
| 文件大小： | 1268K |
| 代理商： | TSC2300IPAGRG4 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页当前第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页
www.ti.com
Default Bass-Boost Transfer Function 48 kHz Mode
1
10
100
1000
10000
100000
Frequency (Hz)
0
–0.5
–1
–1.5
–2
–2.5
–3
–3.5
Gain
(dB)
TSC2300
SLAS372 — NOVEMBER 2002
Figure 77. Transfer Function of Default Bass-Boost Filter Coefficients at 48-kHz Sampling Rate.
Audio ADC
The audio ADC consists of a 4th order multi-bit analog delta-sigma modulator, followed by a digital decimation filter.
The digital output data is then passed to the bus interface for transmission back to the CPU.
The analog modulator is a fully differential switched-capacitor design with multi-bit quantizer and dynamic element
matching to avoid mismatch errors. The modulator operates at an oversampling ratio of 128 for all sample rates. The
input to the ADC is filtered by a single-pole analog filter with -3-dB point at approximately 500 kHz for antialiasing. This
analog filter uses a single off-chip 1 nF cap per ADC (at the AFILT pins) and on-chip resistor.
The digital decimation filter block includes a high-pass IIR filter for the purpose of removing any dc or
sub-audio-frequency component from the signal. Since such a low frequency filter can have significant settling time, the
filter has an adjustable cutoff frequency, in order to allow the host to set a faster settling time initially, then later switch
it back to a level that does not affect the audio band. The settings for this high-pass filter are:
HPF -3-dB frequency:
0.000019 Fs (0.912 Hz at Fs=48 kHz)
0.000078 Fs (3.744 Hz at Fs=48 kHz)
0.1 Fs (4.8 kHz at Fs=48 kHz)
The filter block provides an audio passband ripple of +/-0.03 dB over a passband from 0 Hz to 0.454 Fs, and 70-dB
minimum stopband attenuation from 0.548 Fs to 64 Fs.
The ADC modulator and digital filter operate on a clock that changes directly with sampling frequency (Fs). This is in
contrast to the DAC, which keeps the modulator running at a high rate of 128 x 44.1 kHz or 128 x 48 kHz even if the
incoming data rate is much lower, such as 8 kHz. Group delay of the ADC path varies with sampling frequency and is
given by 28.7/Fs.
Audio ADC SNR performance is 88-dB-A typical over 20-Hz - 20-kHz bandwidth in 44.1/48-kHz mode with a 3.3-V
supply level.
The audio ADC is preceded by an analog volume control with gain programmable from 20 dB to -40 dB or mute in
0.5-dB steps using Reg 01h, Pg 2. The input to the volume control is selected as LLINEIN, RLINEIN, MICIN, or a mono
mix of LLINEIN and RLINEIN through the INM bits (Bits [13:12], Reg 00h, Pg 2). An additional preamp gain is
selectable on the MICIN input as 0 dB, 6 dB, or 12 dB using the MICG bits (Bits [9:8], Reg 00h, Pg 2).
64
相关PDF资料 |
PDF描述 |
|---|---|
| TSC2301IPAGR | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| TSC2301IPAG | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| TSC2301IGQZR | SPECIALTY CONSUMER CIRCUIT, PBGA120 |
| TSC2301IGQZ | SPECIALTY CONSUMER CIRCUIT, PBGA120 |
| TSC2301IZQZR | SPECIALTY CONSUMER CIRCUIT, PBGA120 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TSC2301 | 制造商:TI 制造商全称:Texas Instruments 功能描述:PROGRAMMABLE TOUCH SCREEN CONTROLLER WITH STEREO AUDIO CODEC |
| TSC2301EVM | 功能描述:触摸传感器开发工具 TSC2301 Eval Mod RoHS:否 制造商:Cypress Semiconductor 工具用于评估: 接口类型: 工作电压: 最大工作温度: |
| TSC2301IGQZ | 功能描述:触摸屏转换器和控制器 Prog 4-Wire w/20-Bit Stereo Audio Codec RoHS:否 制造商:Microchip Technology 类型:Resistive Touch Controllers 输入类型:3 Key 数据速率:140 SPS 分辨率:10 bit 接口类型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 电源电压:2.5 V to 5.25 V 电源电流:17 mA 工作温度:- 40 C to + 85 C 封装 / 箱体:SSOP-20 |
| TSC2301IGQZR | 功能描述:触摸屏转换器和控制器 Prog 4-Wire w/20-Bit Stereo Audio Codec RoHS:否 制造商:Microchip Technology 类型:Resistive Touch Controllers 输入类型:3 Key 数据速率:140 SPS 分辨率:10 bit 接口类型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 电源电压:2.5 V to 5.25 V 电源电流:17 mA 工作温度:- 40 C to + 85 C 封装 / 箱体:SSOP-20 |
| TSC2301IPAG | 功能描述:触摸屏转换器和控制器 Prog 4-Wire w/20-Bit Stereo Audio Codec RoHS:否 制造商:Microchip Technology 类型:Resistive Touch Controllers 输入类型:3 Key 数据速率:140 SPS 分辨率:10 bit 接口类型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 电源电压:2.5 V to 5.25 V 电源电流:17 mA 工作温度:- 40 C to + 85 C 封装 / 箱体:SSOP-20 |
发布紧急采购，3分钟左右您将得到回复。