What is American Microsystems S10430?
AMI S10430 AMI S10430 Integrated Circuit - Divider-…. AMI S10430 AMI S10430 Integrated Circuit - Divider-Keyer American Microsystems (AMI) S10430 Divider-KeyerFeatures 22 Keyboard Inputs 88 DC Keyer Circuits 34 Binary Dividers Provides Four Pitch Outputs All Key Inputs Sustainable for Percussion All Dividers Resettable Provides "Any Key Down" Indicatio...
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Manufactured byAmerican Microsystems
Product groupDividers-Keyers
DescriptionAMI S10430 AMI S10430 Integrated Circuit - Divider-Keyer
Description 1598702478American Microsystems (AMI) S10430 Divider-KeyerFeatures 22 Keyboard Inputs 88 DC Keyer Circuits 34 Binary Dividers Provides Four Pitch Outputs All Key Inputs Sustainable for Percussion All Dividers Resettable Provides "Any Key Down" Indication Eliminates Multiple-Contact Key SwitchesTypical Applications Generation and Keying of Musical Tones Standard Spinet Organ Keying (37 or 44 note keyboards) Keying of Sustained Tones Percussive Effects Generating Stair-stepped Waveforms Electronic PianoThe 510430 divider-keyer is a monolithic integrated circuit fabricated with P-Channel ion-implanted MOS technology. It is intended for use in spinet organs or other electronic musical instruments having keyboards of up to 44 keys. This device has 22 key inputs, allowing all keying functions for a 44 note manual to be performed by two510430 circuits. Each510430 accepts six frequencies from a top octave synthesizer, such as a 550240, and provides square wave outputs at 16 foot, 8 foot, 4 foot, and 2 foot pitches. For example, if a C key is depressed by itself a low C frequency appears at the 16 foot output, and a C frequency one octave higher appears at the 8 foot out-put; similarly, the 4 foot and 2 foot outputs provide C frequencies one and two octaves higher, respectively, than the C frequency of the8 foot output. All appropriate frequency division is performed by the S10430, eliminating the need for external dividers. The circuit also eliminates the need for multiple-contact key switches and discrete diode or transistor keyers. Because of the high input impedance of the MOS keyers used in this circuit, long sustain envelopes may be obtained by connecting low-value capacitors to the keying inputs.
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