MicroAmp MB-16 Circuit Board
For Hittite Tunable Filters in SP4E Packages
F E A T U R E S
• Fits Hiꢀte Microwave tunable filters
with LP4E packages
• Usable with HMC895-898
tunable bandpass filters
• Uses standard SMD passive parts
• RO-4350 board material
• Fits MicroAmp MH-series housings
The MicroAmp MB-16 circuit board is designed for rapid prototyping of tunable bandpass filters using Hiꢀte Microwave devices in
LP4E packages with RF inputs on pin 3, RF outputs on pin 16, and control connecꢁons on pins 8-10. Filter MMICs are available at
various frequencies throughout the 6.8 to 21 GHz range. This board will fit the MicroAmp MH series of connectorized housings that
allow it to be used as a stand-alone mulꢁplier or cascaded with other MicroAmp boards for added versaꢁlity. Boards are fabricated
from a high-performance 13 mil thick RO-4350 laminate with RoHS compaꢁble ENIG plaꢁng (electroless nickel/immersion gold) on
both the component side and the solid boꢂom ground plane. The board measures 0.490" x 0.590" and mounts into the housing with
four or eight #1-72 screws for opꢁmal high frequency grounding. Filter circuits can be easily assembled with standard surface-mount
passive components. The MB-16 includes provisions for control bias bypassing. Pads for the input/output RF connectors allow the
SMA center pins to be easily soldered to the board aꢃer it is installed into the housing, as well as large pads to connect the control
voltages to feed-throughs. Check the specific data sheet for the filter being used. Many of the pins are unused and need not be
soldered to the ground plane.
R E F S I Z E
C1 0402
C2 0402
C3 0402
U1 LP4E
J1
F U N C T I O N
Bias bypass (not labeled)
Bias bypass (not labeled)
Bias bypass (not labeled)
Tunable Filter
RF input (pin 3)
J2
RF output (pin 16)
Control bias (pin 8)
Control bias (pins 9,10)
J3
J4
TUNABLE FILTER SCHEMATIC
ASSEMBLY
For additional product information, please visit www.twinind.com
Contact information: 925-866-8946 (phone) 925-866-8937 (fax) Sales@twinind.com