ALFA RPAR AS3310-SMT Voltage Controlled Envelope Generator (SOIC-16)

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The ALFA RPAR AS3310 is a self-contained, precision ADSR type of envelope generator intended for electronic music and other sound generation applications. It is pin-for-pin compatible with the CEM3310.

Attack, decay and release times are exponentially voltage controllable over a wide range, and the sustain level is linearly voltage controllable from 0 to 100% of the peak voltage Vp. All four control Inputs are isolated from the rest of the circuitry so that the control pins of tracking units may be simply tied together.

On the negative power output, there is an internal Zener diode at 7.4 volts ±10%, which allows the chip to supply a maximum voltage of ±15V with a current-limiting resistor REE, and a minimum positive supply voltage of +11 volts and a minimum negative supply voltage of -5 volts.

We also have this device in a DIL package.

Features

• CEM 3310 replacement
• Large Time Control Range: 50,000:1 min
• Full ADSR Response
• True RC Envelope Shape
• Exceptionally Low Control Voltage Feedthrough: 90µVmax
• Accurate Exponential Time Control Scales
• Isolated Control Inputs
• Good Repeatability and Tracking Between Units Without External Trim
• Independent Gate and Trigger
• Wide power supply range:
  • negative rail: -15V ÷ -9V (via external resistor)
  • positive rail: +11V ÷ +15V

Product Replacements

This device is compatible with original chips used in the following products. Note however that this device is in a surface mount package and thus cannot be used directly as a replacement without an adapter board. We also have this device in a DIL package for direct replacement applications. ^*

References