LM4250 Programmable Operational Amplifier IC

A programmable operational amplifier defined as an industry standard, frequency compensated operational amplifier, whose gain controlled by external digital or analog signals. The LM4250C is nearly just like the LM4250 except that the LM4250C has its performance guaranteed over 0˚C to +70˚C temperature range rather than the −55˚C to +125˚C temperature range of the LM4250. Since the device is in effect a special op amp for every externally programmed set current, it’s possible to use one stock item for a spread of circuit functions during a system. The LM4250 has two special features in comparison with other monolithic operational amplifiers. First of all, its ability to externally set the bias current levels of the amplifiers. Secondly, the utilization of PNP transistors because the differential input pair.

These programmable op-amps are widely utilized in the experimental design phase, where final specification’s are yet to be determined and also range of adjustment of key parameter’s is vital . These IC also utilized in variable frequency active filters, current controlled oscillators, and modulators.

PIN DESCRIPTION:

• Pin 1: OFFSET NULL 1: Offset Null Pin 1
• Pin 2: INV-INPUT: Inverting Input Pin
• Pin 3: NON-INV-INPUT: Non Inverting Input Pin
• Pin 4:  V-: Negative Power Supply
• Pin 5:  OFFSET NULL 2: Offset Null Pin 2
• Pin 6: OUTPUT: Output Pin
• Pin 7:  V+: Positive Power Supply
• Pin 8: QUS-CURRENT: Quiescent Current Set Pin/Quiescent State