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參數(shù)資料
| 型號(hào)： | BUF20820AIDCPRE4 |
| 英文描述： | 18-Channel GAMMA VOLTAGE GENERATOR with Two Programmable VCOM Channels |
| 中文描述： | 18通道伽瑪雙通道可編程的VCOM電壓發(fā)生器 |
| 文件頁(yè)數(shù)： | 1/32頁(yè) |
| 文件大?。?/td> | 1826K |
| 代理商： | BUF20820AIDCPRE4 |
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FEATURES
18-CHANNEL GAMMA CORRECTION
2-CHANNEL PROGRAMMABLE V
COM
:
100mA I
OUT
ON-CHIP OTP MEMORY
10-BIT RESOLUTION
RAIL-TO-RAIL OUTPUT
LOW SUPPLY CURRENT: 900
μ
A/ch
SUPPLY VOLTAGE: 7V to 18V
DIGITAL SUPPLY: 2.0V to 5.5V
INDUSTRY-STANDARD, TWO-WIRE
INTERFACE: 3.4MHz HIGH-SPEED MODE
HIGH ESD RATING:
4kV HBM, 1kV CDM, 200V MM
DEMO BOARD AND SOFTWARE AVAILABLE
REFH OUT
7V18V
2V5.5V
REFL
AO
LD
SCL
SDA
OUT 1
OUT 18
REFL OUT
OUT 2
OUT 17
V
COMOUT1
V
COMOUT2
D
Control IF
…
…
18 Output Channels plus
Two V
COM
Channels
BUF20820
D
…
O
Digital
Analog
REFH
P
APPLICATIONS
REPLACES RESISTOR-BASED GAMMA
SOLUTIONS
TFT-LCD REFERENCE DRIVERS
DYNAMIC GAMMA CONTROL
DESCRIPTION
The BUF20820 is a programmable voltage reference
generator designed for gamma correction in TFT-LCD
panels. It provides 18 programmable outputs for gamma
correction and two channels for V
COM
adjustment, each
with 10-bit resolution. It offers on-chip One-Time
Programmable (OTP) memory that allows the user to store
the gamma voltages on-chip. This eliminates the need for
an external EEPROM.
This programmability replaces the traditional, time-
consuming process of changing resistor values to optimize
the various gamma voltages and allows designers to
determine the correct gamma voltages for a panel very
quickly. Required voltage changes can also be easily
implemented without hardware changes.
The BUF20820 uses TI’s latest, small-geometry analog
CMOS process, which makes it a very competitive choice
for full production, not just evaluation.
Programming of each output occurs through an industry-
standard, two-wire serial interface. Unlike existing
programmable buffers, the BUF20820 offers a high-speed
mode that allows clock speeds up to 3.4MHz.
For lower or higher channel count, please contact your
local sales or marketing representative.
The BUF20820 is available in an HTSSOP-38
PowerPAD
package. It is specified from 40
°
C to +85
°
C.
BUF20820 RELATED PRODUCTS
FEATURES
18-Channel Programmable, Two V
COM
12-Channel Programmable Buffer, 10-Bit
Programmable V
COM
with Memory
10-Channel Gamma Correction Buffer, Int V
COM
,
18V Operating Supply Voltage
High-Speed V
COM
, 1 and 2 Channels
Complete LCD DC/DC Solution
PRODUCT
BUF20800
BUF12800
BUF01900
BUF11704
SN10501
TPS651xx
BUF20820
SBOS330C DECEMBER 2005 REVISED OCTOBER 2006
18-Channel GAMMA VOLTAGE GENERATOR
with Two Programmable V
COM
Channels
!
!
www.ti.com
Copyright
20052006, Texas Instruments Incorporated
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments
semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPAD is a registered trademark of Texas Instruments. All other trademarks are the property of their respective owners.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| BUF20820EVM | 功能描述:放大器 IC 開(kāi)發(fā)工具 BUF20800-BUF20820 Eval Mod RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類型:Power Amplifiers 工具用于評(píng)估:IR4302 工作電源電壓:13 V to 23 V |
| BUF22821 | 制造商:TI 制造商全稱: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緩沖器 Prgrmbl Gam-Vltg Gen & Vcom Calibrator RoHS:否 制造商:Maxim Integrated 輸入補(bǔ)償電壓: 轉(zhuǎn)換速度: 電源電壓-最大:20 V 電源電壓-最小:9 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-38 封裝:Tube |
| BUF22821EVM | 功能描述:放大器 IC 開(kāi)發(fā)工具 BUF22821EVM Eval Mod RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類型:Power Amplifiers 工具用于評(píng)估:IR4302 工作電源電壓:13 V to 23 V |
| BUF22821EVM-USB | 功能描述:放大器 IC 開(kāi)發(fā)工具 BUF22821 Eval board Mod RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類型:Power Amplifiers 工具用于評(píng)估:IR4302 工作電源電壓:13 V to 23 V |
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