- 您现在的位置：买卖IC网 > PDF目录98302 > TSC2301IZQZR (TEXAS INSTRUMENTS INC) SPECIALTY CONSUMER CIRCUIT, PBGA120 PDF资料下载
参数资料
| 型号： | TSC2301IZQZR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PBGA120 |
| 封装： | GREEN, PLASTIC, VFBGA-120 |
| 文件页数： | 71/95页 |
| 文件大小： | 1322K |
| 代理商： | TSC2301IZQZR |
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页当前第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页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页
www.ti.com
TSC2301
SLAS371D – SEPTEMBER 2002 – REVISED AUGUST 2004
The ADC modulator and digital filter operate on a clock that changes directly with 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.
Each 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 these volume controls are selected as LLINEIN, RLINEIN,
MICIN, or a mono mix of LLINEIN and RLINEIN through the INML 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).
Audio Bypass Mode
In audio bypass mode, the L/RLINEIN analog inputs can be routed to mix with the DAC output and play to the
line-outputs (VOUTL/R) as well as the headphone outputs (HPL/R) and mono output (MONO+/-). This path has a
stereo analog volume control associated with it, with range settings from 12.0 dB to -35.5 dB in 0.5-dB steps. If
the audio ADCs and DACs are not used while the bypass path is in use, the ADCs and DAC must be powered
down to improve noise performance and reduce power consumption.
This analog volume control has soft-stepping logic associated with it, so that when a volume change is made via
the SPI bus, the logic changes the actual volume incrementally, single-stepping the actual volume up or down
once every 20 sec until it reaches the desired volume level.
This volume control also has similar algorithms as the ADC/DAC volume controls, in that the volume starts at
mute upon power-up, then is slowly single-stepped up to the desired level. At a power-down request, the volume
is slowly single-stepped down to mute before the circuit is actually powered down.
Differential Monophonic Output (MONO+/-)
The differential mono output of the TSC2301 can be used to drive a power amplifier which drives a
low-impedance speaker. This block can output either a mono mix of the stereo line outputs, or the analog input to
the left-channel ADC. This is selected through the MONS bit (Bit 2, Reg 04h, Pg 2). The mono mix of the line
outputs is represented by the equation VOUTL/2 + VOUTR/2. Similarly, the mono mix of the analog line inputs is
represented by LLINEIN/2 + RLINEIN/2.
Microphone Bias Voltage (MICBIAS)
The TSC2301 provides an output voltage suitable for biasing an electret microphone capsule. This voltage is
always 1 V below the supply voltage of the part. This output can be disabled through the MIBPD bit (Bit 6, Reg
05h, Pg 2) to reduce power consumption if not used.
Power Consumption
The TSC2301 provides maximum flexibility to the user for control of power consumption. Towards that end, every
section of the TSC2301 audio codec can be independently powered down. The power down status of the
different sections is controlled by Reg 05h in Pg 2. The analog bypass path, headphone amplifier, mono output,
stereo DAC, left channel ADC, right channel ADC, microphone bias, crystal oscillator, and oscillator clock buffer
sections can all be powered down independently. It is recommended that the end-user power down all unused
sections whenever possible in order to minimize power consumption. Below is a table showing power
consumption in different modes of operation.
73
相关PDF资料 |
PDF描述 |
|---|---|
| TSC2301IZQZ | SPECIALTY CONSUMER CIRCUIT, PBGA120 |
| TSC2301IPAGG4 | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| TSC2301IPAGRG4 | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| TSC2302IRGZRG4 | SPECIALTY CONSUMER CIRCUIT, PQCC48 |
| TSDC4872IJT | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA8 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TSC2301PAG | 制造商:TI 制造商全称:Texas Instruments 功能描述:PROGRAMMABLE TOUCH SCREEN CONTROLLER WITH STEREO AUDIO CODEC |
| TSC2301PAGR | 制造商:TI 制造商全称:Texas Instruments 功能描述:PROGRAMMABLE TOUCH SCREEN CONTROLLER WITH STEREO AUDIO CODEC |
| TSC2302 | 制造商:BB 制造商全称:BB 功能描述:PROGRAMMABLE TOUCH SCREEN CONTROLLER WITH STEREO AUDIO CODEC |
| TSC2302IRGZ | 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 |
| TSC2302IRGZG4 | 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。