LT1057 Dual JFET Input Precision High Speed Op-Amp

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LT1057 is an industry-standard, frequency compensated high gain, dual JFET precision operational amplifier. LT1057 features a combination of outstanding high speed and precision specifications. It replaces all the popular bipolar and JFET input dual op-amps. The IC comes in an 8-pin hermetically sealed dual inline IC packaging (DIP) and is compatible with other CMOS, JFET, PMOS, and NMOS devices.

Precision Operational Amplifier

Precision amplifiers are op-amps with better design specifications in terms of precision offset, zero-drift over time, lower internal noise, and input bias current. They are used in analog filters where they do not distort or DC offset the signal of interest. Their functionality and mode of use are somewhat similar to conventional op-amps; but, the output is precise, accurate, and virtually free of any kind of noise.

For Example; an LM741 op-amp has an offset voltage of 5mV. The offset voltage signifies the voltage that the user has to apply between the +ve and -ve of the IC, in order to get an output of 0V. On configuring the op-amp to operate at a gain of 100. The gain will not only multiply the input signal, but it will also multiply the offset voltage. This will result in the output voltage being off-value by a factor of +/-0.5V. On considering the OP177; a precision op-amp, with an offset voltage of 25uV. The same gain value of 100, would produce an error of only 2.5mV in a signal that has been amplified by a factor of 100.

LT1057 Pinout

LT1057 Pin Configuration

Pin No	Pin Name	Description
1	OUTPUT A	Output Of Amplifier A
2	INV-INPUT A	Inverting Input Of Amplifier A
3	NON-INV-INPUT A	Non Inverting Input Of Amplifier A
4	V-	Negative Power Supply
5	NON-INV-INPUT B	Non Inverting Input Of Amplifier B
6	INV-INPUT B	Inverting Input Of Amplifier B
7	OUTPUT B	Output Of Amplifier B
8	V+	Positive Power Supply