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BUF22821AIDCPR The Texas Instruments BUF22821AIDCPR is a 22-channel programmable gamma voltage generator and VCOM calibrator. It features a 10-bit resolution and an I2C interface for easy integration.
Mfr Part #:

BUF22821AIDCPR

Available from 3 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments BUF22821AIDCPR is a 22-channel programmable gamma voltage generator and VCOM calibrator. It features a 10-bit resolution and an I2C interface for easy integration.
✓ Total Stock: 86,091 pcs
$ Price Range: $3.62

BUF22821AIDCPR Available from 3 distributors

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Unit Electronics Co.,Limited ✓
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82,859 pcs
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82859 pcs On Request 1 On Request On Request On Request On Request On Request
Smaxon Electronics ✓
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1,812 pcs
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1812 pcs On Request 1 On Request On Request 0914+ On Request On Request
Xingangxin ✓
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1,420 pcs
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1420 pcs On Request 1 On Request On Request On Request On Request On Request
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BUF22821AIDCPR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Applications
Display Type
Interface
Lead Style
Output Type
Resolution
Supply Current
Tape & Reel
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BUF22821AIDCPR Description

Short technical summary and product information.

The BUF22821AIDCPR from Texas Instruments is a versatile gamma voltage generator and VCOM calibrator designed for LCD display applications. It offers 22 programmable gamma channels and two programmable VCOM channels, along with two static gamma channels, making it ideal for new 10-bit source drivers requiring extensive gamma correction.

 

The device supports 10-bit resolution and features a 16x rewritable nonvolatile memory with two independent banks, allowing for simultaneous storage of different gamma curves. This facilitates easy switching between configurations. The output channels provide rail-to-rail performance, typically swinging within 100mV of the supply rails with a 10mA load.

 

Integration is simplified through an I2C interface supporting standard operations up to 400kHz. The BUF22821AIDCPR operates within a temperature range of -40°C to 95°C and is housed in an HTSSOP (DCP) package measuring 62.08 mm² (9.7 mm × 6.4 mm). It is suitable for display sizes ranging from 7 inches or less to 21 inches and above.

 

Key electrical specifications include a supply voltage range of 9V to 20V and a digital supply voltage range of 2V to 5.5V. The low supply current of 0.5mA per channel contributes to power efficiency in display systems.

BUF22821AIDCPR Quick Information

Product Type: Gamma Voltage Generator and Vcom Calibrator
Series: BUF22821
Canonical Name: Texas Instruments BUF22821 Programmable Gamma-Voltage Generator and Vcom Calibrator
Subcategory: VCOM Calibrator

BUF22821AIDCPR Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

BUF22821AIDCPR Estimated Pricing

Qty Low High
1+ $3.62 $3.62

Estimated market price range - modelled values for guidance only, not live distributor offers.

BUF22821AIDCPR Features

  • 22 programmable gamma channels
  • 10-bit resolution
  • 16x rewritable nonvolatile memory
  • Rail-to-rail output
  • I2C interface

BUF22821AIDCPR Applications

  • TFT-LCD reference drivers
  • Displays 7 inches or less
  • Displays 7 to 13 inches
  • Displays 13 to 21 inches
  • Displays 21 inches and above

BUF22821AIDCPR FAQs

6 frequently asked questions generated from this part’s specifications.
How many programmable gamma channels does the BUF22821AIDCPR offer?

The BUF22821AIDCPR offers 22 programmable gamma channels.

What is the resolution of the gamma voltage generator?

The gamma voltage generator has a 10-bit resolution.

What type of interface does the BUF22821AIDCPR use?

The BUF22821AIDCPR uses an I2C interface.

What is the operating temperature range for this device?

The operating temperature range is -40°C to 95°C.

What is the supply voltage range for the BUF22821AIDCPR?

The supply voltage range is 9V to 20V.

What package type is the BUF22821AIDCPR supplied in?

It is supplied in an HTSSOP (DCP) package.

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