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Product Overview
Voltage Controlled Envelope Generator

The CEM3310 is a self contained, precision ADSR type of envelope generator intended for electronic music and other sound generation applications.
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Voltage Controlled Filter

The CEM3320 is a high performance voltage controlled four-pole filter complete with on-chip voltage controllable resonance.
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Dual Voltage Controlled Amplifier

The CEM3330 and CEM3335 are dual, high performance, voltage controlled amplifiers intended for electronic musical instrument and professional audio applications.
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Voltage Controlled Oscillator

The CEM3340 and CEM3345 are completely self contained, precision voltage controlled oscillators, featuring both exponential and linear control scales and up to four buffered output waveforms: triangle, sawtooth, square, and pulse with voltage controllable pulse width.
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Fast Dual DAC Multiplier

The CEM 3365 is a dual high speed on quandrant multiplier intended to scale the output of fast bipolar DACs in digital audio applications. Each half of the 3365 contains a very fast op ampl and a high speed current input / current output gain cell whose gain is controlled by the output of the op amp; a full scale multiplication with settling of the cell output to 12 bits can occur in 150 nS (200 nS max.). This response is in contrast to the many microseconds which would result from changing the reference input of even the fastest bipolar multiplying DACs.
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Dual Low Rise VCA

The CEM 3381 and CEM 3382 are low cost dual voltage controlled amplifiers intended for applications requiring high audio performance in a small space. Both independently contained in a standard 8 pin minidip, the two gain cells feature extremely low noise for signal-to-noise ratios better than 100dB, low distortion with less than 0.1% THD, and low control feedthrough for “pop” free performance with gain modulation.
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Dual Low Noise V.C. Filter

The CEM 3385 is a dual 4-pole low-pass voltage controlled filter intended for applications requiring high audio quality. Completely independent, each filter provides both frequency control over a 12 octave range and variable Q enhancement (resonance) from 0 to self-sustained oscillation, all with easily interfaceable voltage levels from 0 to +5 volts.
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Low Noise V.C. Signal Processor

The CEM 3387 is a general purpose audio signal processor intended for applications requiring high audio quality. Contained on-chip is a 3-pole low pass voltage controlled filter, cascaded to a 4-pole low pass V.C. filter with a voltage controlled feedback path for Q enhancement (resonance) ; also included is a final voltage controlled amplifier which drives two additional VCAs for voltage controlled pan into left and right outputs.
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Voltage Controlled Signal Processor

The CEM 3389 is a general purpose audio signal processing device intended for use in multi-channel systems. Included on-chip are a wide range four-pole low-pass voltage controlled filter with voltage controllable resonance, and three high quality voltage controlled amplifiers, two of which pan the output signal of the third between two outputs.
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CEM 5310 Hex ADSR and VCA

The CEM5310 is a hex ADSR type envelope modulator intended to produce keyed amplitude envelopes on the digital divider tones generated by organs and other keyboard instruments.
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CEM 5315 Quant ADSR and Octave Divider

The CEM 5315 is a quintuple ADSR Type envelope modulator and octave frequency divider intended for electronic musical instruments.
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Octal Sample & Hold

The CEM 5508 is an 8 channel multiplexed Sample and Hold intended for generating multiple system control voltages or moderate speed multiplexed digital audio. Containing an auto zeroing op amp, analog multiplexer, 3 bit decoder, and 8 individual Sample and Holds capable of settling to 12 bits in under 1.5 uS, the 5530 can sample a voltage from a DAC into any one of its 8 outputs with less than 2 mV error from –5 to +5 volts.
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Fast Octal Sample & Hold

The CEM 5510 is a high speed eight-channel multiplexed Sample and Hold intended for multiplexed digital audio applications. Containing a very fast op amp, analog multiplexer, and eight Sample and Holds capable of settling to 12 bits in less than 400 nS, the 5510 accepts a current input from any industry standard high speed bipolar DAC to generate 8 channels of digital audio in less than 2 uS (500 nS per channel).
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Octal Double Buffered Sample and Hold

The CEM 5512 is a high speed, eight channel multiplexed Sample and Hold with double sampling capability intended for digital audio applications. With all capacitors on chip, each channel consists of an input S&H with fast response for acquiring an input signal to 12 bits within 400 nS, and followed by an output S&H with independent track/hold enable signal; the addition of the second S&H allows precise timing control over the output sample regardless of when the multiplexed DAC data is available from the system. This structure, in combination with separate analog and digital supply pins and a novel design for the output S&H which effectively eliminates track-to-hold steps and signal feedthrough, provides exceptionally clean outputs for low noise and distortion.
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30 Channel Sample & Hold

The CEM 5530 is a 30 channel multiplexed Sample and Hold intended for generating multiple system control voltages or moderate speed multiplexed digital audio. Containing an auto zeroing op amp, analog multiplexer, 5 bit decoder, and 30 individual Sample and Holds capable of settling to 12 bits in under 2 uS, the 5530 can sample a voltage from a DAC into any one of its 30 outputs with less than 2 mV error from –5 to +5 volts.
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Bus Controlled Signal Processor

The CEM 5570 is an audio signal-processing block controllable directly through a uP bus. Included on-chip are a wide range four-pole filter with selectable low-pass or band pass response, a variable gain amplifiers with \separate inputs and outputs; also on-chip is a multiplying 12 bit DAC, five Sample & Holds, and associated latches and logic for controlling the four parameters – filter frequency, filter resonance, gain 1, and gain 2.
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