Global Mixed-mode Technology
G1630
Programmable 8 + 1 Channel Voltage Buffers with
2 Bank Memory for TFT LCD
Features
Supply Operation Range : 7V to 20V
8+1 Channels :
---8 Channel Rail-to-Rail Programmable Gamma
Buffers:
10 Bits Resolution for Each Channel
25mA Output Current for Each Channel
BK_SEL for Switching Stored Data Sets
---1 Channel Rail-to-Rail VCOM Buffer:
7 Bits Adjustable Output
±100mA Output Current
±260mA Output Short-Circuit Current
20V/μs Slew Rate
2-Wire I
2
C Slave Mode Interface
Using One Control Pin Enable to Store Data into
Non-Volatile Memory (NVM)
Non-Volatile Memory (NVM) Store Setting (at
Least 100 Re-Write Times)
QFN4X4-24 Package
Applications
TFT-LCD Monitors
LCD Televisions
General Description
The G1630 is 8+1 channel digital programed voltage
reference buffer suitable for TFT-LCD application. It
consists of 8 channels buffered voltage generator for
gamma curve adjustment and 1 greater channel for
VCOM reference voltage compensation. Each gamma
and VCOM channel has its own 10bit digital-to-analog
converter, and the digital data is programed through
I
2
C interface then store in the integrated NVM. The
NVM allows two sets of gamma and VCOM data to be
stored. The data sets can be dynamic switched be-
tween two register banks obtains rapid changes on
gamma curve. All of the channels are capable of driv-
ing heavy capacitive loads and offering large current
sufficiently. (VCOM: 100mA; Gamma: 25mA)
The G1630 is available in the QFN4X4-24 package.
Ordering Information
ORDER
NUMBER
G1630Q51U
Note: Q5:QFN4X4-24
1: Bonding Code
U: Tape & Reel
MARKING
1630
TEMP.
RANGE
-40°C to 85°C
PACKAGE
(Green/Halogen-Free)
QFN4X4-24
Pin Configuration
AGND
GMA8
GMA7
HVDD
Typical Application Circuit
nWR
SCL
From T-CON
BK_SEL
24
23
21
20
22
19
SDA
A0
NC
DVDD
A1
AGND_AMP
1
2
3
4
5
6
10
11
12
7
8
9
Thermal
Pad
18
17
16
15
14
13
GMA6
GMA5
GMA4
GMA3
GMA2
GMA1
AVDD
10µF
AVDD
DVDD
SCL
GMA1
GMA2
GMA3
GMA4
HVDD
GMA5
GMA6
GMA7
To Source Driver
To HVDD or AVDD
To Source Driver
DVDD
10µF
4.7K
SCL
4.7K
SDA
A0, A1
nWR
AVDD or HVDD
10µF
To VCOM
SDA
A0
G1630
A1
nWR
AVDD_AMP
VCOM
AGND_AMP
EP PAD
AVDD_AMP
VCOM
AVDD
BK_SEL
AGND
NC
GMA8
G1630 QFN4X4-24
Note: Recommend connecting the Thermal Pad to
the Ground for excellent power dissipation.
Ver: 0.2
Sep 27, 2013
TEL: 886-3-5788833
http://www.gmt.com.tw
1
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