NTE7144

Integrated Circuit

BIMOS Operational Amplifier

Description:

The NTE7144 is an integrated circuit operational amplifier in an 8–Lead Mini–DIP type package that

combines the advantages of high–voltage PMOS transistors with high–voltage bipolar transistors on

a single monolithic chip. This device features gate–protected MOSFET (PMOS) transistors in the in-

put circuit to provide very–high–input impedance, very–low–input current, and high–speed perfor-

mance. The NTE7144 operates at supply voltages from 4V to 36V (either single or dual supply) and

is internally phase–compensated to achieve stable operation in unity–gain follower operation.

The use of PMOS field–effect transistors in the input stage results in common–mode input–voltage

capability down to 0.5V below the negative–supply terminal, an important attribute for single–supply

applications. The output stage uses bipolar transistors and includes built–in protection against dam-

age from load–terminal short–circuiting to either supply–rail or to GND.

Features:

D MOSFET Input Stage:

Very High Input Impedance

Very Low Input Current

Wide Common–Mode Input Voltage Range

Output Swing Complements Input Common–Mode Range

D Directly Replaces Industry Type 741 in Most Applications

Applications:

D Ground–Referenced Single–Supply Amplifiers in Automobile and Portable Instrumentation

D Sample and Hold Amplifiers

D Long–Duration Timers/Multivibrators (Microseconds – Minutes – Hours)

D Photocurrent Instrumentation

D Peak Detectors

D Active Filters

D Comparators

D Interface in 5V TTL Systems and other Low–Supply Voltage Systems

D All Standard Operational Amplifier Applications

D Function Generators

D Tone Controls

D Power Supplies

D Portable Instruments

D Intrusion Alarm Systems