O'Reilly logo

Consumer Electronics by S. P. Bali

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

THE TAA320 INTEGRATED CIRCUIT

The TAA320 is a monolithic integrated circuit comprising three components mounted in a T0–18 envelope: a MOS transistor of the p-channel enhancement type, an npn silicon transistor and a resistor. Its circuit is given in Fig. 20.6.

The biasing resistor R adjusts the operating current, Is, of the MOS transistor. Since its transconductance is proportional to Is, resistor R must be as small as possible to obtain maximum gain; on the other hand a low value reduces amplification of the silicon transistor. A value of about 1 KΩ gives optimum overall transconductance of the whole integrated circuit.

The TAA320 has advantages in that it combines a high transconductance with a high input impedance and low noise level.

 

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required