MicroAmp MB-10 Circuit Board
For 5-pin SOT-23 Operational Amplifiers
F E A T U R E S
• Fits standard 5-pin SOT-23
op-amp packages
• Inverꢀng or non-inverꢀng configuraꢀon
• Opꢀonal DC blocks on input and output
• Uses standard 0603 passives
• RO-4350 board material
• Fits MicroAmp MH-series housings
The MicroAmp MB-10 circuit board is designed for rapid prototyping of operaꢀonal amplifier circuits using popular 5-pin SOT-23
packages with the output on pin 1, non-inverꢀng input on pin 3, and the inverꢀng input on pin 4. It can be configured as an inverꢀng
or non-inverꢀng topology with selectable input and feedback resistors and has a parallel feedback capacitor for filtering or compensa-
ꢀon. This board will fit the MicroAmp MH series of connectorized housings that allow it to be used as a single amplifier stage or
cascaded with other MicroAmp boards for added versaꢀlity. Boards are fabricated from a high-performance 13 mil thick RO-4350
laminate with RoHS compaꢀble ENIG plaꢀng (electroless nickel/immersion gold) on both the component side and the solid boꢁom
ground plane. The board measures 0.490" x 0.590" and mounts into the housing with four #1-72 screws. Amplifier circuits can be
easily designed and assembled with standard 0603 surface-mount passive components. It includes provisions for input and output DC
blocking capacitors, or these can be replaced with zero-ohm jumpers for DC operaꢀon. Pads for the input/output connectors allow
the SMA center pins to be easily soldered to the board aꢂer it is installed into the housing, as well as large pads to connect the bias
voltages to feed-throughs. Separate bias pads are provided for single and dual bias configuraꢀons. Use cauꢀon on the bias polarity
depending upon the specific op-amp being used.
R E F S I Z E F U N C T I O N
C1 0606
C2 0603
C3 0603
C4 0603
C5 0603
R1 0603
R2 0603
R3 0603
R4 0603
R5 0603
Block or jumper (not labeled)
Block or jumper (not labeled)
Bias bypass
Bias bypass
Inverꢀng feedback
Inverꢀng feedback gain
Input gain
Input divider
Input divider
Feedback gain
U1 SOT-23 Op-Amp
J1
J2
J3
J4
Signal input
Signal output (pin 1)
Bias or ground (pin 2)
Bias or ground (pin 5)
OP-AMP SCHEMATIC
ASSEMBLY
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Contact information: 925-866-8946 (phone) 925-866-8937 (fax) Sales@twinind.com