G3212

G3212
Global Mixed-mode Technology
Low Capacitance VGA 2:2 Dual-Graphics Crossover Switch
Features
General Description
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The G3212 integrates high-bandwidth analog
switches, level-shifting buffers and level-translating
FET switches. The device implements a complete
2:2 dual-graphics crossover solution for VGA signal
switching.
The
G3212
provides
12
very
high-frequency 700MHz SPST switches for RGB
signals, 4 low- frequency clamping switches for the
Display Data Channel(DDC) signals, 2 pairs of
level-shifting buffers for the HSYNC and VSYNC
signals, and also integrated extended ESD protection.
The G3212 is used to select one of two sources to
either of two destinations within a laptop computer.
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Low ON-Resistance 5Ω (Typical), RGB Signal
Low supply Current <5µA (Max)
High Bandwidth, 700MHz (Typical), RGB
DDC Level Shifting, Isolation with Internal Pullup
Termination, and Protection
Horizontal and Vertical Sync Level Shifting and
Buffering
Inputs Compatible with VL, Outputs TTL Compatible
Source/Sink ±10mA on Each SH_, SV_ Output
Independent Selectable Logic Inputs For
Switching
High ESD Protection on Outputs:
±15kV HBM ESD
±6kV IEC 61000-4-2 Contact Discharge
TQFN 5x5 40 pins Package with Exposed Pad
Horizontal and vertical synchronization (SH_/SV_)
inputs feature level-shifting buffers to support lowvoltage controllers and standard 5V TTL-level monitors. DDC, consisting of SDA_ and SCL_, are FET
switches that protect the low-voltage VGA source
from potential damage from high-voltage presence
on the monitor while reducing capacitive load.
Applications
„
Notebook Computer-Switchable Graphics
All 14 output terminals of the G3212feature high-ESD
protection to ±15kV Human Body Model (HBM) and
±6kV IEC 61000-4-2 Contact. All other pins are protected to ±2kV HBM.
Ordering Information
ORDER
NUMBER
MARKIN
G
G3212RG1U
3212
Note: RG: TQFN5X5-40
1: Bonding Code
U: Tape & Reel
TEMP.
RANGE
PACKAGE
(Green)
-40°C to 85°C
TQFN5X5-40
The G3212 is available in the TQFN5X5-40 package
with exposed pad.
RED1
GRN1
BLU1
33
32
31
SV1
36
SCL1
SH1
37
SDA1
S11
38
34
S10
39
35
S01
40
Pin Configuration
S00
1
30
EN
2
29
VCC
SHA
3
28
SH2
27
SV2
26
SCL2
SVA
4
SCLA
5
SDAA
6
REDA
Thermal
Pad
GND
16
17
18
19
20
REDB
GRNB
BLUB
GND
VCC
SDAB
21
15
10
SCLB
BLU2
GND
14
GRN2
22
SVB
23
9
13
8
BLUA
SHB
GRNA
11
RED2
12
24
VL
SDA2
7
NC
25
G3212 TQFN5X5-40
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
Mar 07, 2012
1