Texas Instruments 12 Channel Gamma Buffer with Dual Memory Banks BUF12840EVM BUF12840EVM 데이터 시트
제품 코드
BUF12840EVM
V
SD
BKSEL
SCL
SDA
Control (IF and Memory)
OUT9
¼
¼
¼
BUF12840
DACRegisterBank1
DACRegisterBank0
OUT0
OUT1
1
¼
¼
OUT10
OUT11
V
S
External
Memory
Memory
Control
EN
EA1
EA0
A0
LD
SBOS519A
–
OCTOBER 2010
–
REVISED JULY 2011
Programmable Gamma-Voltage Generator
with Integrated Two-Bank Memory and External EEPROM
1
FEATURES
DESCRIPTION
The BUF12840 offers 12 programmable gamma
2
•
10-BIT RESOLUTION
channels
with
external
electrically
erasable
•
12-CHANNEL P-GAMMA
programmable read-only memory (EEPROM) read
•
READS FROM EXTERNAL EEPROM
capabilities.
•
TWO INDEPENDENT PIN-SELECTABLE
The BUF12840 has two separate memory banks that
MEMORY BANKS
allow simultaneous storage of two different gamma
•
RAIL-TO-RAIL OUTPUT:
curves to facilitate switching between gamma curves.
–
300mV Min Swing-to-Rail (10mA)
All gamma channels offer a rail-to-rail output that
–
200mV Min Swing-to-Rail (5mA)
typically swings to within 200mV of either supply rail
•
LOW SUPPLY CURRENT
with a 5mA load. All channels are programmed using
•
SUPPLY VOLTAGE: 9V to 20V
a two-wire interface that supports standard operations
up to 400kHz and high-speed data transfers up to
up to 400kHz and high-speed data transfers up to
•
DIGITAL SUPPLY: 2V to 5.5V
3.4MHz.
•
TWO-WIRE INTERFACE: Supports 400kHz and
3.4MHz Operation
3.4MHz Operation
The
BUF12840
is
manufactured
using
Texas
Instruments
’
proprietary, state-of-the-art, high-voltage
APPLICATIONS
CMOS process. This process offers very dense logic
and high supply voltage operation of up to 20V. The
and high supply voltage operation of up to 20V. The
•
TFT-LCD REFERENCE DRIVERS
BUF12840 is offered in a QFN-24 package, and is
specified from
specified from
–
40
°
C to +95
°
C.
RELATED PRODUCTS
FEATURES
PRODUCT
22-Channel Gamma Correction Buffer
12-Channel Gamma Correction Buffer
20-Channel Programmable Buffer, 10-Bit, V
COM
16-/20-Channel Programmable Buffer with Memory
Programmable V
COM
Driver
18V Supply, Traditional Gamma Buffers
22V Supply, Traditional Gamma Buffers
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.
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright
©
2010
–
2011, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.