BUF08821BIPWPR

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BUF08821BIPWPR

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

Packaging

Package | PIN: PWP | 20
Temp: S (-40 to 95)
Carrier: Cut Tape
Qty Price
1-9 $4.03
10-24 $3.63
25-99 $3.38
100-249 $2.96
250-499 $2.78
500-749 $2.36
750-999 $1.99
1000+ $1.90

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

Texas Instruments  BUF08821BIPWPR

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.