LT1013CDR

LT1013CDR application field and working principle

The LT1013CDR is a monolithic high speed rail-to-rail input output operational amplifier designed for use in 45V single power supply to +18V and ground. This device is designed for low voltage, high speed precision amplifier applications and yields rail-to-rail output drive with only 10mV overdrive, bandgap reference accuracy, and low offset voltage. It also provides excellent high speed characteristics, including a unity gain bandwidth of 13MHz with a 3V supply. LT1013CDR also includes higher common-mode rejection, lower distortion, and higher output current capability.

Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

The LT1013CDR is an ideal high speed, low voltage operational amplifier for use in instrumentation, buffer amplifiers and other high precision applications. It has a low input offset voltage of 5mV and a low distortion of 1.15nV/√Hz. The amplifier also offers a high input bias current of approximately 1.5nA, which is more than enough for measurement applications. It also has a high input impedance of 1MOhm at room temperature, ensuring high fidelity measurements.

In addition, the LT1013CDR has a high output current capability of a few milliamperes, ideal for driving loads with low impedance. The amplifier also provides excellent output stage linearity, low noise and fast slew rate, which is particularly beneficial when driving high speed circuits with large voltage swings.

The LT1013CDR is also suitable for use in audio-frequency applications due to its small output impedance, low distortion, and high slew rate. Its low input offset voltage and wide input common-mode voltage range also make it particularly suitable for applications in video filters and signal processing.

Working Principle

The LT1013CDR is based on the classic and well-established voltage transfer gain loop. This is the most commonly used active analog signal amplification circuit, in which an input signal is amplified by a voltage transfer gain of the differential amplifier. The LT1013CDR uses a Gilbert cell to achieve rail-to-rail performance. The gain is determined by the ratio of the resistor divider and the capacitive feedback loop. As the input signal sweeps through the range of several volts, the gain of the amplifier changes slightly, allowing for a very wide input dynamic range.

The LT1013CDR also incorporates an on-chip reference square wave generator, which is used to generate a reference current that sets the overall gain and bandgap accuracy of the circuit. The LT1013CDR also includes a thermal shut down circuit, which is used to protect the device from excessive temperatures. The output of the LT1013CDR is specified up to 18V, so it can also be used to drive higher voltage loads.

Conclusion

The LT1013CDR is a high speed, rail-to-rail input/output operational amplifier that is designed for small voltage, high speed, and high precision amplifier applications. It provides low input offset voltage, low distortion, high output current capability and wide input common-mode voltage range. It also includes a reference square wave generator, which is used to set the overall gain and bandgap accuracy of the amplifier. Overall, the LT1013CDR is an ideal amplifier for applications in instrumentation, buffer amplifiers and other high-precision applications.