Difference between revisions of "MIDI-IN-OUT"

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{| class="wikitable"
 
{| class="wikitable"
 
! Vcc
 
! Vcc
! 5
+
! 5.00
 
! V
 
! V
 
|-
 
|-
 
| Vf LED
 
| Vf LED
| 1.2
+
| 1.20
 
| V
 
| V
 
|-
 
|-
 
| Res ser
 
| Res ser
| 660
+
| 660.00
 
| Ohms
 
| Ohms
 
|-
 
|-
 
| If LED
 
| If LED
| 5.758
+
| 5.76
 
| mA
 
| mA
 
|-
 
|-
 
| CTR (min)
 
| CTR (min)
| 0.2
+
| 0.20
 
| A/A
 
| A/A
 
|-
 
|-
 
| Iout
 
| Iout
| 1.152
+
| 1.15
 
| mA
 
| mA
 
|-
 
|-
 
| Vout
 
| Vout
| 3.3
+
| 3.30
 
| V
 
| V
 
|-
 
|-
 
| R(min)
 
| R(min)
| 2.86458333333333
+
| 2.86
 
| Kohms
 
| Kohms
 
|-
 
|-
 
| Vout
 
| Vout
| 5
+
| 5.00
 
| V
 
| V
 
|-
 
|-
 
| R(min)
 
| R(min)
| 1.74545454545455
+
| 1.75
 
| Kohms
 
| Kohms
 
|-
 
|-
 
|}
 
|}

Revision as of 13:57, 29 September 2022

MIDI-IN-OUT REV1 FRONT 3D.png

Features

  • Module for Prototyping Synthesizer components
  • MIDI In/Out Jacks
  • Opto-isolated MIDI Input
  • 5V MIDI interface
  • 3.3V or 5V Serial connections
  • MIDI In is opto-isolated
  • (2) 4-40 Mounting holes

Connectors

J1 - MIDI In

MIDI IN SCHEMATIC.PNG

  • Opto-isolated input

J2 - MIDI Out

MIDI OUT SCHEMATIC.PNG

J3 - Serial/Power

  • Pinout
  1. V1 (3.3V or 5V
  2. 5V
  3. Receive data (out of card)
  4. Transmit (in to card)
  5. GND

J4 - Short V1 to 5V

  • Short J3-1 to J3-2
  • Used when Host Serial interface is 5V
  • Open when Host Serial interface is 3.3V

Drive Circuit

4N28-DC-TransferRatio.PNG

4N28-CurrentTransferRatio-curve.PNG

  • LED Current vs voltage

4N28-LED-IvsV.PNG

  • Output transistor capacitance

4N28-OutputCapacitance.PNG

  • Switching Time

4N28-SwitchingTime.PNG

Vcc 5.00 V
Vf LED 1.20 V
Res ser 660.00 Ohms
If LED 5.76 mA
CTR (min) 0.20 A/A
Iout 1.15 mA
Vout 3.30 V
R(min) 2.86 Kohms
Vout 5.00 V
R(min) 1.75 Kohms