LT1013 Dual Precision Operational Amplifier

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LT1013 is a Dual precision operational amplifiers, featuring high gain, low supply current, low noise, and low-offset-voltage temperature coefficient. The IC can be operated from a single 5-V power supply; the common-mode input voltage range includes ground, and the output can also swing to within a few millivolts of ground. Crossover distortion is eliminated. The IC comes in an 8 – pin dual in line (DIP) IC packaging.

Precision Operational Amplifier

A Precision operational amplifier is an operational amplifier with better design specifications and topology than the conventional op-amp. Precision Op-amps are more accurate than your average general-purpose op-amps. In terms of design topology, Precision amplifiers have a better precision offset, zero-drift over time, lower internal noise (nV/√Hz), and input bias current. On the component scale, they have precise matching resistors etched in the substrate at the chip level.

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.

LT1013 Pinout

LT1013 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

LT1013 Features

Guaranteed Offset Current: 0.8nA Max
Guaranteed High Gain
Pin Compatible to 1458 and 324 with Precision Specs
Guaranteed Offset Voltage: 150μV Max
Guaranteed Low Supply Current: 500μA Max
Low Voltage Noise, 0.1Hz to 10Hz: 0.55μVp-p
Guaranteed Low Drift: 2μV/°C Ma
Low Current Noise—Better than 0P-07, 0.07pA/√Hz

Application

Battery-Powered Precision Instrumentation
- Strain Gauge Signal Conditioners
- Thermocouple Amplifiers
- Instrumentation Amplifiers
4mA–20mA Current Loop Transmitters
Multiple Limit Threshold Detection
Active Filters
Multiple Gain Blocks