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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:
Š 10 Bits Resolution for Each Channel
Š 25mA Output Current for Each Channel
Š BK_SEL for Switching Stored Data Sets
---1 Channel Rail-to-Rail VCOM Buffer:
Š 7 Bits Adjustable Output
Š ±100mA Output Current
Š ±260mA Output Short-Circuit Current
Š 20V/μs Slew Rate
„ 2-Wire I2C 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
Ordering Information
ORDER
NUMBER
G1630Q51U
Note: Q5:QFN4X4-24
1: Bonding Code
U: Tape & Reel
Pin Configuration
MARKING
1630
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
I2C 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.
TEMP.
RANGE
-40°C to 85°C
PACKAGE
(Green/Halogen-Free)
QFN4X4-24
Typical Application Circuit
SDA
A0
NC
DVDD
A1
AGND_AMP
1
2
3
4
5
6
Thermal
Pad
18 GMA6
17 GMA5
16 GMA4
15 GMA3
14 GMA2
13 GMA1
G1630 QFN4X4-24
Note: Recommend connecting the Thermal Pad to
the Ground for excellent power dissipation.
AVDD
10µF
DVDD
4.7K
SCL
10µF
4.7K
SDA
A0, A1
nWR
AVDD or HVDD
10µF
To VCOM
From T-CON
AVDD
BK_SEL
DVDD
SCL
SDA
A0 G1630
A1
nWR
AVDD_AMP
VCOM
AGND_AMP
EP PAD
GMA1
GMA2
GMA3
GMA4
HVDD
GMA5
GMA6
GMA7
GMA8
To Source Driver
To HVDD or AVDD
To Source Driver
Ver: 0.2
Sep 27, 2013
TEL: 886-3-5788833
http://www.gmt.com.tw
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