- 您現在的位置：買賣IC網 > PDF目錄98302 > TSC2111IRGZR (TEXAS INSTRUMENTS INC) 0.4 W, 1 CHANNEL, AUDIO AMPLIFIER, QCC48 PDF資料下載
參數資料
| 型號： | TSC2111IRGZR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 0.4 W, 1 CHANNEL, AUDIO AMPLIFIER, QCC48 |
| 封裝： | PLASTIC, QFN-48 |
| 文件頁數： | 77/99頁 |
| 文件大?。?/td> | 1143K |
| 代理商： | TSC2111IRGZR |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁當前第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁
TSC2111
SLAS495A JUNE 2006 REVISED OCTOBER 2007
www.ti.com
79
With this in mind, power to the TSC2111 should be clean and well bypassed. A 0.1
F ceramic bypass capacitor
should be placed as close to the device as possible. A 1
F to 10 F capacitor may also be needed if the
impedance of the connection between the TSC2111 supply pins and system power supply is high.
A 1
F bypass capacitor should be placed on the VREF pin if the SAR ADC is intended to be used with the
internal reference voltagel. If an external reference voltage originates from an op amp, make sure that it can
drive any bypass capacitor that is used without oscillation.
The TSC2111 architecture offers no inherent rejection of noise or voltage variation in regards to using an
external reference input. This is of particular concern when the reference input is tied to the power supply. Any
noise and ripple from the supply appears directly in the digital results. While high frequency noise can be filtered
out, voltage variation due to line frequency (50 Hz or 60 Hz) can be difficult to remove.
The ground pins should be connected to a clean ground point. In many cases, this is the analog ground. Avoid
connections, which are too near the grounding point of a microcontroller or digital signal processor. If needed,
run a ground trace directly from the converter to the power supply entry or battery connection point. The ideal
layout includes an analog ground plane dedicated to the converter and associated analog circuitry.
In the specific case of use with a resistive touch screen, care should be taken with the connection between the
converter and the touch screen. Since resistive touch screens have fairly low resistance, the interconnection
should be as short and robust as possible. Loose connections can be a source of error when the contact
resistance changes with flexing or vibrations.
As indicated previously, noise can be a major source of error in touch-screen applications (e.g., applications
that require a back-lit LCD panel). This EMI noise can be coupled through the LCD panel to the touch screen
and cause flickering of the converted ADC data. Several things can be done to reduce this error, such as utilizing
a touch screen with a bottomside metal layer connected to ground. This couples the majority of noise to
ground. Additionally, filtering capacitors, from Y+, Y–, X+, and X– to ground, can also help. Note, however, that
the use of these capacitors increases screen settling time and require longer panel voltage stabilization times,
as well as increased precharge and sense times for the PINTDAV circuitry of the TSC2111.
相關PDF資料 |
PDF描述 |
|---|---|
| TSC2111IRGZT | 0.4 W, 1 CHANNEL, AUDIO AMPLIFIER, QCC48 |
| TSC2111IRGZRG4 | 0.4 W, 1 CHANNEL, AUDIO AMPLIFIER, QCC48 |
| TSC2111IRGZTG4 | 0.4 W, 1 CHANNEL, AUDIO AMPLIFIER, QCC48 |
| TSC2117IRGZR | SPECIALTY CONSUMER CIRCUIT, QCC48 |
| TSC2117IRGZT | SPECIALTY CONSUMER CIRCUIT, QCC48 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TSC2111IRGZRG4 | 功能描述:觸摸屏轉換器和控制器 SMART 4-Wire with Audio RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數據速率:140 SPS 分辨率:10 bit 接口類型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 電源電壓:2.5 V to 5.25 V 電源電流:17 mA 工作溫度:- 40 C to + 85 C 封裝 / 箱體:SSOP-20 |
| TSC2111IRGZT | 功能描述:觸摸屏轉換器和控制器 SMART 4-Wire with Audio RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數據速率:140 SPS 分辨率:10 bit 接口類型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 電源電壓:2.5 V to 5.25 V 電源電流:17 mA 工作溫度:- 40 C to + 85 C 封裝 / 箱體:SSOP-20 |
| TSC2111IRGZTG4 | 功能描述:觸摸屏轉換器和控制器 SMART 4-Wire with Audio RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數據速率:140 SPS 分辨率:10 bit 接口類型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 電源電壓:2.5 V to 5.25 V 電源電流:17 mA 工作溫度:- 40 C to + 85 C 封裝 / 箱體:SSOP-20 |
| TSC-2-1-15 | 制造商:Micrel Inc 功能描述: |
| TSC2117 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Low-Power Audio Codec With Embedded miniDSP, Stereo Class-D Speaker Amplifier, and Smart Four-Wire Touch-Screen Controller |
發(fā)布緊急采購，3分鐘左右您將得到回復。