ALFA

The AS16M1 analog switch with serial digital interface offers 16 pairs individually controlled single-pole-change-over (SPCO) switches. All switches conduct equally in either direction and on-resistance (170Ω) is constant over the analog signal range. These CMOS switches can operate continuously with power supply +5V and switch input currents in any combination to output node (summing) or ground them. Upon power-up, all summing switches are off, grounding switches are on and the internal serial and parallel shift registers are reset to zero. The AS16M1 is controlled by a serial interface. The interface is compatible with the SPI interface standard. QFN-28.

The AS177D op-amp has a very small offset voltage, which is achieved by trimming the microcircuit at the manufacturing stage and a wide range of supply voltages. The AS177 op-amp has low input currents and a high gain. Low offset voltage (Uio) and high gain (Au) make this op amp particularly attractive for use in instrumentation circuits. SOIC-8.

The ALFA AS194H (TO5-8) is a junction matched monolithic NPN transistor pair with an order of magnitude improvement in matching over conventional transistor pair.

The ALFA AS2164 (SOIC-16) contains four independent voltage controlled amplifiers (VCAs) in a single package. High performance (100 dB dynamic range, 0.02% THD) is provided at a very low cost-per-VCA, resulting in excellent value for cost sensitive gain control applications.

The ALFA AS3046 (PDIP-14) consists of five general purpose silicon NPN transistors on a common monolithic substrate. Two of the transistors are internally connected to form a differentially-connected pair.

The ALFA AS3052 consists of 8 NPN transistors, 2 diodes and 1 buried zener on a common monolithic substrate. Transistor array allows variety of connections: differential pairs, different type of current sources, different kind of multipliers/dividers, etc. SOIC-24.

The ALFA AS3080ED is a gain block which is the operational-transconductance amplifier (OTA). SOIC-8.

The ALFA AS3280A (PDIP-16) consists of two variable operational amplifiers that are designed to substantially reduce the initial input offset voltage and the offset voltage variation with respect to changes in programming current. This design results in reduced AGC thump, an objectionable characteristic of many AGC systems. Low Offset Voltage Drift: 5uV/'C (Max), Low Initial Input Offset Voltage: 500uV (Max).

The ALFA AS3280D (SOIC-16) consists of two variable operational amplifiers that are designed to substantially reduce the initial input offset voltage and the offset voltage variation with respect to changes in programming current. This design results in reduced AGC thump, an objectionable characteristic of many AGC systems.

The ALFA AS3310D (SOIC-16) is a high performance voltage-controlled analog ADSR envelope generator that is pin-for-pin compatible with the CEM3310.

The ALFA AS3320 (SOIC-18) is a high performance voltage-controlled four-pole filter modelled after the CEM3320, with on-chip voltage-controllable resonance. The chip can be configured as an lowpass, highpass, bandpass, or all pass filter. It has an exponential (V/Oct) frequency control input which can cover more than ten octaves with little control voltage feedthrough.

The AS3330 is a dual general purpose voltage controlled amplifier. The chip is Alfa's modern pin-for-pin compatible clone of the CEM3330 dual voltage-controlled amplifier. It can also be used to build voltage-controlled filters and waveform generators.

The AS3340A chip is Alfa's modern equivalent of the famous CEM3340 voltage-controlled oscillator. It provides Ramp, Pulse/Square, and Triangle outputs, has inputs for oscillator sync, is temperature compensated and stable, and provides excellent 1V/Oct tracking. In short, it's everything you need from an analog oscillator, on a chip. There hasn't been a better design than the 3340.

The AS3340D (SOIC-16) chip is Alfa's modern equivalent of the famous CEM3340 voltage-controlled oscillator. It provides Ramp, Pulse/Square, and Triangle outputs, has inputs for oscillator sync, is temperature compensated and stable, and provides excellent 1V/Oct tracking. In short, it's everything you need from an analog oscillator, on a chip. There hasn't been a better design than the 3340.

AS3345 oscillator

The ALFA AS3350 (PDIP-16). is a dual voltage controlled state-variable filter intended for electronic musical instruments and other signal processing applications.

The AS3360 is a dual general purpose voltage controlled amplifier. The chip is Alfa's modern pin-for-pin compatible clone of the CEM3360 dual voltage-controlled amplifier. It can also be used to build voltage-controlled filters and waveform generators.

The ALFA AS3363 (PDIP-16) contains three VCA blocks, which are intended for use in musical synthesizer applications (VCA blocks, voltage polarizer, multiplexers, morphing, ring modulators etc.).

The ALFA AS3364 (PDIP-16) is a quad general purpose voltage linearly controlled VCA intended for such applications as voltage controlled amplifiers, filters, and waveform generators. Each VCA independently provides linear control scaling over greater than a 100 dB range. Complete with virtual ground summing inputs, wide voltage compliance current outputs, and control inputs referenced to ground, The ALFA AS3364 requires exceptionally few external components and is extremely easy to use.

AS3365 contains three VCA blocks, which are intended for use in musical synthesizer applications (VCA blocks, faders, panners, multiplexers, ring modulators etc.). VCA1 and VCA2 implement function of controlling amplification. A direct signal CVMix1 is supplied to the VCA1 control, an inverted CVMix2 signal is supplied to the VCA2 control.

AS3381 is a dual low noise voltage controlled amplifier, with linear scale, intended for applications requiring high audio performance in a small space. AS3381 contains two gain cells with extremely low noise for signal-tonoise ratio better than 100 dB, low distortion with less than 0.3% THD, and low control feedthrough for pop free performance when gain modulated. AS3381 is also extremely easy to use, requiring few external components and no external trimming to meet their excellent performance. T

The AS3397 is a complete system for the generation and processing of audio waveforms in electronic musical instruments. Intended to be driven from digitally generated square or pulse timing signals, the device includes two independent waveform converters, a mixer for voltage controlling the relative balance between the two waveform converter outputs, a dedicated four-pole low - pass voltage controlled filter with voltage controllable resonance, a VCA for allowing one converter output to frequency modulate the filter, and panoramic output VCAs.

The ALFA AS394CH (TO5-8) is a junction matched monolithic NPN transistor pair with an order of magnitude improvement in matching over conventional transistor pair.

Matched PNP transistor pair.