FHP3350 FAIRCHILD [Fairchild Semiconductor], FHP3350 Datasheet - Page 14

• Manufacturer Part Number: FHP3350
• Description: Triple and Quad Voltage Feedback Amplifiers
• Manufacturer: FAIRCHILD [Fairchild Semiconductor]

www.fairchildsemi.com
Layout Considerations
General layout and supply bypassing play major roles in high
frequency performance. Fairchild has evaluation boards to use
as a guide for high frequency layout and as aid in device testing
and characterization. Follow the steps below as a basis for high
frequency layout:
• Include 6.8µF and 0.01µF ceramic capacitors
• Place the 6.8µF capacitor within 0.75 inches of the power pin
• Place the 0.01µF capacitor within 0.1 inches of the power pin
• Remove the ground plane under and around the part,
especially near the input and output pins to reduce parasitic
capacitance
• Minimize all trace lengths to reduce series inductances
Refer to the evaluation board layouts shown below for more
information.
Evaluation Board Information
The following evaluation boards are available to aid in the
testing and layout of thes devices:
Evalutaion Board Schematics
Figure 34. FHP3350 KEB019/KEB020 schematic
KEB019
KEB020
KEB012
KEB018
Evaluation
Board #
IN1
IN2
IN3
DISABLE 1
DISABLE 2
DISABLE 3
FHP3350IM14X
FHP3350IMTC14X
FHP3450IMTC14X
FHP3450IM14X
RIN1
RIN2
RIN3
RG1
RG2
RG3
Products
RF1
RF2
RF3
1
2
3
ROUT1
ROUT2
ROUT3
OUT1
OUT2
OUT3
14
Figure 35. FHP3350 KEB019 (top side)
Figure 36. FHP3350 KEB019 (bottom side)
FHP3350, FHP3450 Rev. 1A