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Global Mixed-mode Technology
G1614
Programmable 12+1+1 Channel Voltage Buffers
with NVM for TFT LCD
Features
„ Supply Operation Range : 9V to 20V
„ 12+1+1 Channels :
---12 Channel Rail-to-Rail Programmable Gam-
ma Buffers
Š 10 bits Resolution for each Channel
Š 25mA Output Current for each Channel
---1 Channel Rail-to-Rail Vcom Buffer:
Š 10 Bits Adjustable Output
Š ±100mA Output Current
Š ±300mA Output Short-Circuit Current
Š 50V/μs Slew Rate
Š Programmable VCOM Limits
---1 Channel Rail-to-Rail Repair OP:
Š ±30mA Output Current
Š ±100mA Output Short-Circuit Current
Š 15V/μs Slew Rate
---2 Banks Registers Using BKSEL to Select
which Bank Data Output
„ 2-Wire I2C Slave Mode Interface
Ordering Information
ORDER
NUMBER
G1614Q51U
Note : Q5:QFN4X4-24
1: Bonding Code
U: Tape & reel
Pin Configuration
MARKING
1614
AGND
DVDD
SCL
SDA
BKSEL
A0
1
2
3
4
5
6
Thermal
Pad
18 GMA8
17 GMA7
16 OPO
15 OPI
14 GMA6
13 GMA5
G1614 QFN4X4-24
Note: Recommend connecting the Thermal Pad to
the Ground for excellent power dissipation.
REF
Bank1
GAMMA
VCOM
MTP
REG
DVDD
SCL
SDA
A0
2
3
4
6
„ Non-Volatile Memory (NVM) Store Setting (at
Least 100 Re-Write Times)
„ QFN4X4-24 Package
Applications
„ TFT-LCD Monitors
„ LCD Televisions
General Description
The G1614 consists of 12+1+1 channel buffers target
toward the needs of thin film transistor liquid crystal
display (TFT LCD). This device incorporates 12 gam-
ma buffers, one Vcom buffer and one repair op which
can be programmed through I2C interface. It contains
two register banks which can store two different sets
of gamma and VCOM values. Each buffer is capable
of driving heavy capacitive loads and offering large
current loading (Vcom: 100mA, Gammas: 25mA).
The G1614 is available in the QFN4X4-24 package.
TEMP.
RANGE
-40°C to 85°C
PACKAGE
(Green)
QFN4X4-24
Typical Application Circuit
18V
AVDD1
REF
Bank1
GAMMA
VCOM
Bank2
GAMMA
VCOM
I2C
REG
I2C
INTERFACE
8
REF
Bank1
GAMMA
VCOM
Bank2
GAMMA
VCOM
DAC
REG
MUX
DAC
Reference
VREF
10-BIT
DAC
10-BIT
DAC
10-BIT
DAC
10-BIT
DAC
10-BIT
DAC
10-BIT
DAC
15
OPI
10-BIT
DAC
10-BIT
DAC
10-BIT
DAC
10-BIT
DAC
10-BIT
DAC
10-BIT
DAC
10-BIT
DAC
9 GMA1
10 GMA2
11 GMA3
12 GMA4
13 GMA5
14 GMA6
16 OPO
18V
23 AVDD2
17 GMA7
18 GMA8
19 GMA9
20 GMA10
21 GMA11
22 GMA12
Source
Driver
24 VCOM
1,7
AGND
5
BKSEL
LCD
PANEL
Ver: 0.1
Jan 13, 2014
TEL: 886-3-5788833
http://www.gmt.com.tw
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