TCM1512B
Description
The TCM1501B, TCM1506B, TCM1512B, TCM1531, TCM1532, TCM1536, and TCM1539 are monolithicintegrated circuit telephone tone-ringer drivers that, when coupled with an appropriate transducer, replace theelectromechanical bell. These devices are designed using BIDFETtechnology for use with either a Piezotransducer or an inexpensive transformer-coupled speaker to produce a pleasing tone composed of a highfrequency (fH) alternating with a low frequency (fL) resulting in a warble tone. Each device is powered andactivated by the telephone line ring voltage, which may vary from 40 Vrms to 150 Vrms at frequencies from15.3 Hz to 68 Hz.
• Electronic Replacement for Electromechanical Telephone Bell When Used With Transducer
• Designed to Meet or Exceed FCC Part 68 Class B Ringer Requirements
• Low-Cost External Component Requirements
• Low External Component Count
• High Standby Input Impedance
1 MΩ Typ
• Low Ringer Equivalency Number
< 1 Typ
• Single-Ended High-Voltage Output Compatible With Piezo Transducer or Transformer-Coupled Speaker
• Reliable BIDFET‡ Process Technology Provides Efficient High-Voltage Operation
• On-Chip High-Voltage Full-Wave Diode Bridge Rectifier and Output Voltage Regulator
• On-Chip Circuitry Provides Ring Rejection of Rotary Dial Transients, Lightning, and Induced High-Voltage Transients
• On-Chip Thyristor Coupled With Additional External Components Provides Enhanced Rejection of Dial Pulses
• TCM1501B, TCM1512B, and TCM1506B Are Improved Direct Replacements for TCM1501A, TCM1512A, and TCM1506A,Respectively
• Requires Only a Single-Value Oscillator Resistor (Eliminates Binning Codes of the TCM15xxA Series)
Related Parts
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