ODHKGL4185KD-05
KGL4185KD
APPLICATION NOTE
1. For stable operation;
To prevent a dependence of “X-Point” on the supply voltage VD1,
Case 1 : VB2 is open
VB2 is biased at about 0.364 x VD1 (1.2V@VD1=3.3V) by the internal circuit.
Control VB1, so that the voltage difference “VB1–VB2” is constant.
Case 2 : VB2 is biased
Bias VB2 at about 1.2V by using the external voltage source independent of VD1.
Control VB1 by using the external voltage source independent of VD1.
2. Power-up/shut-down sequence;
For power-up, supply voltage (VD2) at first, next supply voltage (VD1), then control voltages ( VB1, (VB2),
VC1, VC2 ).
For shut-down, control voltages ( VB1, (VB2), VC1, VC2 ). at first, next VD1, then VD2.
Customer does not need to care about the sequence for the control voltages (VB1,(VB2),VC1,VC2).
TYPICAL PCB LAYOUT AND ASSEMBLING INFORMATION
Please request us the application note named GTD18791 and GTD18806.
ESD CONSIDERATIONS
This device can be damaged by ESD; therefore appropriate precautions must be taken to avoid
exposure to ESD and EOS during handling, assembly, and testing of these devices. Failure to adhere
to proper ESD/EOS precautions during handling and assembly of these devices can damage or
adversely affect device reliability.
SAFETY AND HANDLING INFORMATION ON GaAs DEVICES
Arsenic Compound (GaAs Devices)
The product contains arsenic (As) as a compound.
This material is stable for normal use, however, its dust or vapor may be potentially hazardous to the human
body.
Avoid ingestion, fracture, burning or chemical treatment to the product.
• Do not put the product in your mouth.
• Do not burn or destroy the product.
• Do not perform chemical treatment for the product.
Keep laws and ordinances related to the disposal of the products.
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OKI [ OKI ELECTRONIC COMPONETS ]
