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| 型号： | BUF20820AIDCPRE4 |
| 厂商： | Texas Instruments |
| 文件页数： | 14/29页 |
| 文件大小： | 0K |
| 描述： | IC 18CH PROG V-REF GEN 38-HTSSOP |
| 标准包装： | 2,000 |
| 应用： | TFT-LCD 面板：伽玛缓冲器，VCOM 驱动器 |
| 输出类型： | 满摆幅 |
| 电路数： | 18 |
| 电流 - 电源： | 18mA |
| 电流 - 输出 / 通道： | 100mA |
| 电压 - 电源，单路/双路(±)： | 7 V ~ 18 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 38-TFSOP （0.173"，4.40mm 宽）裸露焊盘 |
| 供应商设备封装： | 38-HTSSOP |
| 包装： | 带卷 (TR) |
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BUF20820
SBOS330E DECEMBER 2005 REVISED OCTOBER 2008
www.ti.com
21
TOTAL TI PANEL SOLUTION
In addition to the BUF20820 programmable voltage
reference, TI offers a complete set of ICs for the LCD panel
market, including gamma correction buffers, various
power-supply solutions, and audio power solutions. See
Figure 19 for the total IC solution from TI.
THE BUF20820 IN INDUSTRIAL
APPLICATIONS
The wide supply range, high output current, and very low
cost make the BUF20820 attractive for a range of medium
accuracy industrial applications such as programmable
power supplies, multi-channel data acquisition systems,
data
loggers,
sensor
excitation
and
linearization,
power-supply generation, and others. Each DAC channel
features 1LSB DNL and INL.
Many systems require different levels of biasing and power
supply for various components as well as sensor
excitation, control-loop set-points, voltage outputs, current
outputs, and other functions. The BUF20820, with its 20
total programmable DAC channels, provides great
flexibility to the entire system by allowing the designer to
change all these parameters via software.
Figure 20 provides various ideas on how the BUF20820
can be used in applications. A micro-controller with
two-wire serial interface controls the various DACs of the
BUF20820. The BUF20820 can be used for:
D sensor excitation
D programmable bias/reference voltages
D variable power-supplies
D high-current voltage output
D 4-20mA output
D set-point generators for control loops.
NOTE: At power-up, the output voltages of the BUF20820
DACs are configured to the programmed OTP memory
values, or (VREFH VREFL)/2 if the OTP values have not been
programmed.
2.7 V5 V
3.3 V
nn
26 V
14 V
15 V
TPA3005D2
TPA3008D2
Audio
Speaker
Driver
Logic and
Timing
Controller
HighResolution
TFTLCS Panel
Source Driver
Gamma Correction
BUF20820
V
COM
Ga
te
D
ri
v
e
r
TPS651xx
LCD
Supply
Figure 19. TI LCD Solution
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相关代理商/技术参数 |
参数描述 |
|---|---|
| BUF20820EVM | 功能描述:放大器 IC 开发工具 BUF20800-BUF20820 Eval Mod RoHS:否 制造商:International Rectifier 产品:Demonstration Boards 类型:Power Amplifiers 工具用于评估:IR4302 工作电源电压:13 V to 23 V |
| BUF22821 | 制造商:TI 制造商全称:Texas Instruments 功能描述:Programmable Gamma-Voltage Generator and VCOM Calibrator with Integrated Two-Bank Memory |
| BUF22821AIDCPR | 功能描述:LCD Gamma缓冲器 Prgrmbl Gam-Vltg Gen & Vcom Calibrator RoHS:否 制造商:Maxim Integrated 输入补偿电压: 转换速度: 电源电压-最大:20 V 电源电压-最小:9 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-38 封装:Tube |
| BUF22821EVM | 功能描述:放大器 IC 开发工具 BUF22821EVM Eval Mod RoHS:否 制造商:International Rectifier 产品:Demonstration Boards 类型:Power Amplifiers 工具用于评估:IR4302 工作电源电压:13 V to 23 V |
| BUF22821EVM-USB | 功能描述:放大器 IC 开发工具 BUF22821 Eval board Mod RoHS:否 制造商:International Rectifier 产品:Demonstration Boards 类型:Power Amplifiers 工具用于评估:IR4302 工作电源电压:13 V to 23 V |
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