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TBA673
II II
RING (DE)MODULATOR FOR TELEPHONY AND INDUSTRIAL EQUIPMENT
The TBA673 is a monolithic integrated circuit comprising a 4-transistor modulator and demodulator circuit. The four transistors must be as identical as possible; the lay-out has been designed to achieve this and the best possible tracking of the transistor parameters with tempera ture.
QUICK REFERENCE DATA
Collector cut -off current
IE = 0; VCB = 5 V; Tamb = 25 °c
Base-emitter voltage differences between transistors 1, 2, 3, 4
VCB = 5 V; -IE = 150 IJA
D. C.
TBA673 Datasheet
