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BUF08821 Status: ACTIVE

Programmable Gamma-Voltage Generator and Vcom Calibrator with Integrated Two-Bank Memory


      
         
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Datasheet

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Functional Block Diagram


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 BUF08821
# Gamma Buffers9  
# Vcom Channels1  
Vs(Min)(V)9  
Vs(Max)(V)20  
Iq per channel(Typ)(mA)0.5  
Vcom-Output Current(Typ)(mA)100  
Gamma-Output Current(Typ)(mA)30  
Operating Temp Range(Celsius)-40 to 85  
Pin/Package20HTSSOP  
 Samples
 Inventory

Customers Who Evaluated This Product Also Evaluated

  • BUF08832: Programmable Gamma-Voltage Generator and High Slew Rate Vcom with Integrated Two-Bank Memory

Product Information

Features

  • 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.

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Pricing / Packaging / CAD Design Tools / Samples

PricePackagingSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSamples
BUF08821AIPWPRACTIVE-40 to 851.90 | 1kuHTSSOP (PWP) | 20 View 2000 | LARGE T&RContact TI Distributor or Sales Office
BUF08821AIPWPRG4ACTIVE-40 to 851.90 | 1kuHTSSOP (PWP) | 20 View 2000 | LARGE T&RContact TI Distributor or Sales Office
BUF08821BIPWPRACTIVE-40 to 851.90 | 1kuHTSSOP (PWP) | 20 View 2000 | LARGE T&R

* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.

Inventory

Reported Distributor Inventory as of 12:14 PM GMT, 24 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 20 WeeksBUF08821AIPWPR
AsiaWPI >1k
WorldwideDigiKey >1k
TI Lead Time*: 20 WeeksBUF08821AIPWPRG4
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksBUF08821BIPWPR
WorldwideDigiKey 812
View all Distributors  

** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.

Quality & Lead (Pb)-Free Data

 Product ContentDPPM / MTBF / FIT Rate
DeviceEco Plan* Lead / Ball FinishMSL Rating / Peak ReflowDetailsDetails
BUF08821AIPWPR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
BUF08821AIPWPRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
BUF08821BIPWPR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView

* The planned eco-friendly classification: Pb-Free (RoHS) or Pb-Free (RoHS Exempt) or Green (RoHS & no Sb/Br) - please click on the Product Content Details "View" link in the table above for the latest availability information and additional product content details.

If the information you are requesting is not available online at this time, contact one of our Product Information Centers regarding the availability of this information.

Technical Documents

Most useful technical documents for BUF08821 Help

Datasheet

Application Notes

User Guides

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SPICE-Based Analog Simulation ProgramTINA-TITexas InstrumentsSimulators
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Customers Who Evaluated This Product Also Evaluated...
Part # Name Product Family Comments
BUF08832 Programmable Gamma-Voltage Generator and High Slew Rate Vcom with Integrated Two-Bank Memory PRECISION AMPLIFIER-LCD GAMMA BUFFER TI customers also evaluated this product.

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