BUF18830 Datasheet, PDF (1/9 Pages) Texas Instruments – Programmable GAMMA-VOLTAGE GENERATOR with Two High Slew Rate VCOMs

BUF18830
www.ti.com
SBOS408A – MAY 2011 – REVISED JUNE 2011
Programmable GAMMA-VOLTAGE GENERATOR
with Two High Slew Rate V_COMs
Check for Samples: BUF18830
FEATURES
1
•2 10-BIT RESOLUTION
• 18-CHANNEL P-GAMMA:
– 300-mV Min Swing-to-Rail (10 mA)
• TWO-CHANNEL P-V_COM:
– 400-mA Typical I_OUT
• HIGH SLEW RATE V_COM: 45 V/μs
• RAIL-TO-RAIL OUTPUT
• LOW SUPPLY CURRENT
• SUPPLY VOLTAGE: 6.5 V to 20 V
• DIGITAL SUPPLY: 2.0 V to 5.5 V
• TWO-WIRE INTERFACE: Supports 400 kHz and
3.4 MHz
APPLICATIONS
• TFT-LCD AND OLED REFERENCE DRIVERS
DESCRIPTION
The BUF18830 offers 18 programmable gamma
channels and two programmable V_COM channels.
All gamma and V_COM channels offer a rail-to-rail
output that typically swings to within 300 mV of either
supply rail with a 10-mA load. All channels are
programmed using a two-wire interface that supports
standard operations up to 400 kHz and high-speed
data transfers up to 3.4 MHz.
The BUF18830 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 20 V. The
BUF18830 is offered in a QFN-38 package and is
specified from –40°C to +85°C.
BUF18830
V_SD
DAC
DAC
V_S
OUT0
OUT1
A0
SDA
SCL
Control
I/F
GND_D
DAC
DAC
DAC
DAC
OUT16
OUT17
GND_A
V_S-V_COM
V_COM-OUT1
V_COM-Feedback1
V_COM-OUT2
V_COM-Feedback2
GND-V_COM
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2011, Texas Instruments Incorporated