G1620 Datasheet, PDF (1/1 Pages) Global Mixed-mode Technology Inc – Programmable 14+1 Channel Voltage Buffers with NVM for TFT LCD

Global Mixed-mode Technology
G1620
Programmable 14+1 Channel Voltage Buffers with
NVM for TFT LCD
Features
„ Supply Operation Range : 6.5V to 18V
„ 14+1 Channels :
---14 Channel Rail-to-Rail Programmable
Gamma Buffers
Š 10 bits Resolution for each Channel
Š 25mA Output Current for each Channel
Š 2 Banks Registers Using Bank_Sel to Select
which Bank Data Output
---1 Channel Rail-to-Rail Vcom Buffer:
Š 7 Bits Adjustable Output
Š ±100mA Output Current
Š ±140mA 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)
„ TQFN5X5-32 Package
Ordering Information
ORDER
NUMBER
G1620RA1U
Note: RA: TQFN5X5-32
1: Bonding Code
U: Tape & Reel
MARKING
1620
Pin Configuration
Applications
„ TFT-LCD Monitors
„ LCD Televisions
General Description
The G1620 consists of 14+1 channel buffers target
toward the needs of thin film transistor liquid crystal
display (TFT LCD). This device incorporates one
Vcom buffer and 14 gamma buffers, and are pro-
grammed through I²C interface. It contains two register
banks which can store two different sets of gamma
reference values. Each buffer is capable of driving
heavy capacitive loads and offering large current load-
ing (Vcom: 100mA, Gammas: 25mA).
The G1620 is available in the TQFN5X5-32 package.
TEMP.
RANGE
-40°C to +85°C
PACKAGE
(Green)
TQFN5X5-32
Typical Application Circuit
200Ω
OUT1 1
OUT2 ²
OUT3 ³
OUT4 4
OUT5 ⁵
OUT6 ⁶
OUT7 ⁷
AVDD 8
Thermal
Pad
24 OUT14
23 OUT13
22 OUT12
21 OUT11
20 OUT10
19 OUT9
18 OUT8
17 DVDD
G1620 TQFN5X5-32
Note: Recommend connecting the Thermal Pad to
the Ground for excellent power dissipation.
Ver: 0.2
Nov 07, 2013
AVDD
10µF
AVDD
10µF
DVDD
10µF
SCL
4.7kΩ
3.3V
SDA
4.7kΩ
3.3V
nWR
4.7kΩ
3.3V
0.1µF
24.9kΩ
A0
STATIC_Hi _OUT1
AVDD
DVDD
OUT14
10Ω
10Ω
0.1µF
to Source
Driver
0.1µF
SCL
SDA
BANK_SEL
VCOM_FB
VCOM_OUT
nWR
From T-CON or
Connect 200Ω to GND
10Ω
10µF 10µF 10µF 0.1µF
AVDD
To Panel
100kΩ
SET VCOM_ADJ
AGND DGND
100kΩ
TEL: [phone]
http://www.gmt.com.tw
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