Voltage - Input Offset:	75µV
Base Part Number:	OP113
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Voltage - Supply, Single/Dual (±):	4 V ~ 36 V, ±2 V ~ 18 V
Current - Output / Channel:	40mA
Current - Supply:	3mA
Series:	--
Current - Input Bias:	240nA
Gain Bandwidth Product:	3.4MHz
Slew Rate:	1.2 V/µs
Output Type:	--
Number of Circuits:	1
Amplifier Type:	General Purpose
Part Status:	Obsolete
Packaging:	Tube

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OP113ES Application Field and Working Principle

Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

The OP113ES is a low power, single-ended Operational Amplifier (op amp) with a High Open Loop Frequency (HOLF) and High Open Loop Transimpedance (HOT). This component was designed to serve a broad range of audio applications, including direct-coupled audio amplifiers and low-noise audio instrumentation systems.The OP113ES was designed with an open loop bandwidth of 10MHz and a gain bandwidth of 8.5MHz, allowing it to deliver gains up to 1000V/V and dynamic ranges up to 110dB. It was also designed with a high open loop input impedance of 125kΩ, enabling it to drive capacitive loads of up to 4pF. The component also features a low slew rate of 0.013V/µs, enabling it to operate at rail-to-rail amplitudes accurately and without distortion.In terms of its application in audio amplifiers, the OP113ES is capable of producing both low THD (Total Harmonic Distortion) and low output impedance, both of which are essential for high-quality audio playback. The component is also compatible with single supply operation, allowing it to produce low-noise output with minimal power consumption. This makes the OP113ES well-suited for battery-powered audio applications.The OP113ES’s working principle is based on the use of an Operational Amplifying Element (OAE). This element consists of a differential pair of transistors arranged to amplify signals passing through it. The gain of the amplifier is determined by the biasing of the circuit, with the bias set to produce the desired output level. The component also includes a feedback network, which is used to adjust the amplifier’s transfer function and, thereby, its gain and frequency response.The component features an additional set of transistors, known as the power MOSFETs. These transistors are used to minimize the power dissipated by the component and to increase the component’s thermal stability. This is achieved by using an internal power MOSFET to disconnect the component’s input stage when it is not needed.In conclusion, the OP113ES is an excellent component for a wide variety of audio amplifiers, including direct-coupled audio amplifiers and low-noise audio instrumentation systems. Its wide open loop bandwidth, high input impedance, low slew rate and low power consumption make it well-suited for a variety of applications. The component is also highly accurate, with the bias settings allowing for precise control and adjustable gain and frequency response controlled by its feedback network. Its power MOSFETs also help to improve stability, thermal efficiency and reduce power consumption.

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