README.md
Video Splitter

This design is UNTESTED - the pcb was sent to the fab house 16.10.2016.

This is a simple 2 channel video splitter for FPV use (but can be use with any analog signal).
It uses servo connectors for video in/out but you can solder wires directly to
the pads. Power pin is just a passthru between the 3 connectors (and it powers
the regulator).

Design

This is really a mashup of 2 reference designs - IA171 and LP2985 so no big
innovation here. According to the datasheet the IA171 can drive to 75ohm loads.

Power supply

The splitter was designed to be powered by 5-16v if a 3.3v voltage regulator is used (LP2985 or mic5205). 
The IA171 can be powered by 2.8-5.5V so its possible to use it without any voltage regulator if you have a stable 
power supply in that range - bridge pins 1 and 5 (top pins) of the VREG and
applu 2.8-5.5v to any of the 3 pin connectors (middle pin).

BOM




  
"Qty"
  
"Value"
  
"Device"
  
"Package"
  
"Parts"
  
"Description"
  
"Link"




  
"3"
  
""
  
"M03LOCK"
  
"1X03_LOCK"
  
"VIN, VOUT1, VOUT2"
  
"Header 3"
  
""


  
"1"
  
"0.1uF"
  
"CAP0805"
  
"0805"
  
"C1"
  
"Capacitor"
  
""


  
"1"
  
"100uF"
  
"CAP_POL3528"
  
"EIA3528"
  
"C3"
  
"Capacitor Polarized"
  
""


  
"1"
  
"10nF"
  
"CERAMIC-10NF-50V-5%-X7R(0805)"
  
"C0805"
  
"C7"
  
"302010175"
  
""


  
"3"
  
"22uF"
  
"CAP_POL1206"
  
"EIA3216"
  
"C2, C4, C6"
  
"Capacitor Polarized"
  
""


  
"3"
  
"75R"
  
"RESISTOR0805-RES"
  
"0805"
  
"R1, R2, R3"
  
"Resistor"
  
""


  
"1"
  
"IA171"
  
"IA171"
  
"SOT23-6"
  
"U$1"
  
""
  
""


  
"1"
  
"LP2985-33DBVR"
  
"PMIC-LP2985-33DBVR(SOT23-5)"
  
"SOT-23-5"
  
"VREG"
  
"310030033"
  
""