BUF22821開發(fā)板套件編程器的評估演示板及套件規(guī)格書PDF中文資料

BUF22821屬于開發(fā)板套件編程器的評估演示板及套件。由德州儀器制造生產(chǎn)的BUF22821評估和演示板及套件該系列產(chǎn)品提供了一種方便的方法，在經(jīng)過驗證的實施環(huán)境中評估某些重點器件的性能或特性。評估方法通常有完善的文檔說明，并且視乎具體情況由評估軟件提供支持。產(chǎn)品通常由印刷電路板組成，板上已裝有重點器件以及必要或有用的支持元器件，另外也可能包括其他組件，例如電纜或電源。對于數(shù)量特別多或類別獨特的器件類別(如 ADC、DAC 和開關(guān)模式電源)，評估平臺可組合為一個單獨的產(chǎn)品系列。

1FEATURES

234? 10-BIT RESOLUTION

? 8-CHANNEL P-GAMMA

? 1-CHANNEL P-VCOM

? 16x REWRITABLE NONVOLATILE MEMORY

? TWO INDEPENDENT PIN-SELECTABLE

MEMORY BANKS

? RAIL-TO-RAIL OUTPUT:

300mV Minimum Swing-to-Rail (10mA)

> 300mA Maximum IOUT

? LOW SUPPLY CURRENT

? SUPPLY VOLTAGE: 9V to 20V

? DIGITAL SUPPLY: 2V to 5.5V

? I2C? INTERFACE: Supports 400kHz and

3.4MHz Clock Frequency

APPLICATIONS

? TFT-LCD REFERENCE DRIVERS

DESCRIPTION

The BUF08821 offers eight programmable gamma

channels plus one programmable VCOM channel.

The final gamma and VCOM values can be stored in

the on-chip, nonvolatile memory. To allow for

programming errors or liquid crystal display (LCD)

panel rework, the BUF08821 supports up to 16 write operations to the on-chip memory.

The BUF08821 has two separate memory banks,

allowing simultaneous storage of two different gamma

curves to facilitate switching between gamma curves.

All gamma and VCOM channels offer a rail-to-rail

output that typically swings to within 150mV of either

supply rail with a 10mA load. All channels are

programmed using an I2C interface that supports standard operations up to 400kHz and high-speed

data transfers up to 3.4MHz.

The BUF08821 is manufactured using Texas Instruments’ proprietary, state-of-the-art, high-voltage

CMOS process. This process offers very dense logic

and HIGH supply voltage operation of up to 20V. The

BUF08821 is offered in a HTSSOP-20 PowerPAD?

package. It is specified from –40°C to +85°C.