Global Mixed-mode Technology Inc.
DDR Termination Regulator
General Description
G2993
Features
ꢀOperation Supply Voltage: 1.6V to 5.5V
ꢀLow Supply Current: 280µA @ 2.5V
ꢀLow Output Offset
The G2993 is a linear regulator designed to meet the
JEDEC SSTL-2 and SSTL-3 (Series Stub Termination
Logic) specifications for termination of DDR-SDRAM.
It contains a high-speed operational amplifier that pro-
vides excellent response to the load transients. This
device can deliver 1.5A continuous current and tran-
sient peaks up to 3A in the application as required for
DDR-SDRAM termination.
ꢀSource and Sink Current
ꢀLow External Component Count
ꢀNo Inductor Required
ꢀNo external Resistors Required
ꢀThermal Shutdown Protection
ꢀSOP-8L package
The G2993 can easily provide the accurate VTT volt-
ages without external resistors that PCB areas can be
reduced. The quiescent current is as low as 280µA @
2.5V. So the power consumption can meet the low
power consumption applications.
Applications
ꢀDDR-SDRAM Termination Voltage
ꢀDDR-I / DDR-II Termination Voltage
ꢀSSTL-2
ꢀSSTL-3
Ordering Information
ORDER
NUMBER
G2993P1X
TEMP.
RANGE
-40°C to 85°C
MARKING
PACKAGE
G2993
SOP- 8L
Note: X Specify the packing type
U: Tape & Reel T: Tube
Pin Configuration
Typical Application Circuit
G2993
8
7
6
5
VDDQ
AVIN
PVIN
VTT
1
2
3
4
GND
GND
GND
GND
VDDQ
AVIN
PVIN
V
DDQ=2.5V
VDD=2.5V
VTT
VTT=1.25V
220µF
+
+
GND
47µF
SOP-8L
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.3
Jan 13, 2004
1