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BUF20800 데이터시트(Datasheet) 1 Page - Burr-Brown (TI)

[Old version datasheet] Texas Instruments acquired Burr-Brown Corporation. Click here to check the latest version.
부품명 BUF20800
상세내용  18-Channel GAMMA VOLTAGE GENERATOR with Two Programmable VCOM Channels
PDF  27 Pages
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제조사  BURR-BROWN [Burr-Brown (TI)]
홈페이지  http://www.burr-brown.com
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 1 page
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FEATURES
D 18-CHANNEL GAMMA CORRECTION
D 2-CHANNEL PROGRAMMABLE V
COM:
100mA IOUT
D 10-BIT RESOLUTION
D RAIL-TO-RAIL OUTPUT
D LOW SUPPLY CURRENT: 900µA/ch
D SUPPLY VOLTAGE: 7V to 18V
D DIGITAL SUPPLY: 2.0V to 5.5V
D INDUSTRY-STANDARD, TWO-WIRE
INTERFACE:
3.4MHz High-Speed Mode
D HIGH ESD RATING:
4kV HBM, 1kV CDM, 200V MM
D DEMO BOARD AND SOFTWARE AVAILABLE
REFH OUT
REFH
Digital
(2.0V to 5.5V)
Analog
(7V to 18V)
REFL
AO
LD
SCL
SDA
REFL OUT
OUT 18
OUT 17
Control IF
OUT 1
OUT 2
18 Output Channels plus
Two V
COM Channels
BUF20800
V
CO M OUT1
V
CO M OUT2
APPLICATIONS
D REPLACES RESISTOR-BASED GAMMA
SOLUTIONS
D TFT-LCD REFERENCE DRIVERS
D DYNAMIC GAMMA CONTROL
DESCRIPTION
The BUF20800 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 VCOM adjustment, each
with 10-bit resolution.
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 changes can also be easily implemented
without hardware changes.
The BUF20800 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 BUF20800 offers a high-speed
mode that allows clock speeds up to 3.4MHz.
For lower channel count, please contact your local sales
or marketing representative.
The
BUF20800
is
available
in
an
HTSSOP-38
PowerPAD
 package. It is specified from −40°C to +85°C.
BUF20800 RELATED PRODUCTS
FEATURES
PRODUCT
18-Channel Programmable, Two VCOM + OTP Memory
BUF20820
12-Channel Programmable Buffer, 10-Bit
BUF12800
Programmable VCOM
BUF01900
11-, 6-, 4-Channel Gamma Correction Buffer, 18V Supply
BUFxx704
High-Speed VCOM, 1 and 2 Channels
SN10501
Complete LCD DC/DC Solution
TPS65100
BUF20800
SBOS329D − JUNE 2005 − REVISED OCTOBER 2006
18-Channel GAMMA VOLTAGE GENERATOR
with Two Programmable VCOM Channels
PRODUCTION DATA information is current as of publication date. Products
conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
www.ti.com
Copyright
 2005−2006, 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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