ADSR envelope generator

A simple design offers very snappy attack times, and wide decay/release times. Two outputs of the envelope signal and two inverted outputs allow it to be patched to several modules without the use of a multiple.
The envelope generator is triggered by a 0 to 5 V rising edge.
Circuit activity is indicated by a white LED.

The fast attack time makes the envelope ideal for percussive sounds.

All I/O signals are available internally via a pinheader on the PCB for prepatching the module inside the case.

Tunable parameters:

• ATTACK (0.5ms – 3s)
• DECAY (7ms – 16s)
• SUSTAIN (0V – 6V)
• RELEASE (7ms – 16s)

Inputs:

• GATE IN

Outputs:

• OUT 1
• OUT2
• INV OUT1
• INV OUT2

Power:

• +12V 19mA / -12V 14mA

Dimensions:

• Width: 10TE (50,5mm)
• Depth: 13mm