GMT G1630 Programmable 8 1 channel voltage buffers with 2 bank memory for tft lcd Datasheet

G1630
Global Mixed-mode Technology
Programmable 8 + 1 Channel Voltage Buffers with
2 Bank Memory for TFT LCD
Features
Applications
„ 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
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 between two register banks obtains rapid changes on
gamma curve. All of the channels are capable of driving 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
MARKING
TEMP.
RANGE
PACKAGE
(Green/Halogen-Free)
G1630Q51U
1630
-40°C to 85°C
QFN4X4-24
Note: Q5:QFN4X4-24
1: Bonding Code
U: Tape & Reel
SDA
1
AGND
GMA8
GMA7
HVDD
21
20
19
SCL
23
Typical Application Circuit
22
nWR
24
Pin Configuration
From T-CON
18
GMA6
AVDD
17
GMA5
16
GMA4
DVDD
10µF
4.7K
SCL
4.7K
SDA
A0
2
NC
3
DVDD
4
15
GMA3
A1
5
14
GMA2
AGND_AMP
6
13
GMA1
7
8
9
10
11
12
VCOM
NC
AVDD_AMP
AVDD
BK_SEL
AGND
Thermal
Pad
10µF
A0, A1
nWR
AVDD or HVDD
10µF
To VCOM
AVDD
BK_SEL
GMA1
DVDD
GMA2
SCL
GMA3
SDA
A0
G1630
A1
nWR
AVDD_AMP
GMA4
HVDD
To HVDD or AVDD
GMA5
GMA6
VCOM
To Source Driver
To Source Driver
GMA7
AGND_AMP
EP PAD
G1630 QFN4X4-24
GMA8
Note: Recommend connecting the Thermal Pad to
the Ground for excellent power dissipation.
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 0.2
Sep 27, 2013
1
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