BUF22821AIDCPR
Active22-CH GAMMA-VOLTAGE GENERATOR AND VCOM CALIBRATOR WITH INTEGRATED TWO-BANK MEMORY
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BUF22821AIDCPR
Active22-CH GAMMA-VOLTAGE GENERATOR AND VCOM CALIBRATOR WITH INTEGRATED TWO-BANK MEMORY
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Technical Specifications
Parameters and characteristics for this part
| Specification | BUF22821AIDCPR |
|---|---|
| Current - Output / Channel | 30 mA |
| Current - Supply | 12 mA |
| Mounting Type | Surface Mount |
| Number of Circuits | 24 |
| Output Type | Rail-to-Rail |
| Package / Case | 0.173 in, 4.4 mm |
| Package / Case | 38-PowerTFSOP |
| Supplier Device Package | 38-HTSSOP |
| Voltage - Supply, Single/Dual (±) [Max] | 20 V |
| Voltage - Supply, Single/Dual (±) [Min] | 9 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 6.87 | |
| Digi-Reel® | 1 | $ 6.87 | ||
| Tape & Reel (TR) | 2000 | $ 3.76 | ||
| Texas Instruments | LARGE T&R | 1 | $ 5.26 | |
| 100 | $ 4.29 | |||
| 250 | $ 3.37 | |||
| 1000 | $ 2.86 | |||
Description
General part information
BUF22821 Series
The BUF22821 offers 22 programmable gamma channels, two programmable VCOMchannels, and two static gamma channels. It is ideal for the new 10-bit source drivers that require 22 gamma channels.
The final gamma and VCOMvalues can be stored in the on-chip, nonvolatile memory. To allow for programming errors or liquid crystal display (LCD) panel rework, the BUF22821 supports up to 16 write operations to the on-chip memory. The BUF22821 has two separate banks of memory, allowing simultaneous storage of two different gamma curves to facilitate switching between gamma curves.
All gamma and VCOMchannels offer a rail-to-rail output that typically swings to within 100mV 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.
Documents
Technical documentation and resources