Telefunken Licences GmbH
Quasi Parallel Sound Processing with Quadrature Intercarrier Demodulator
Temic Semiconductors
Three-Tone Ringer for Telephone Sets
Atmel Corporation
Monolithic Integrated Feature Phone Circuit EMI Improved
Temic Semiconductors
Tone Ringer Interface with DC/DC Converter
Temic Semiconductors
Three-Tone Ringer for Telephone Sets
Temic Semiconductors
Tone Ringer Interface
Atmel Corporation
Programmable Telephone Audio Processor
Atmel Corporation
Programmable Telephone Audio Processor
Micross Components
Linear Systems replaces discontinued Siliconix U401 with LSU401
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