AO4840 Discrete Semiconductor Products

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
FET Type:	2 N-Channel (Dual)
FET Feature:	Logic Level Gate
Drain to Source Voltage (Vdss):	40V
Current - Continuous Drain (Id) @ 25°C:	6A
Rds On (Max) @ Id, Vgs:	30 mOhm @ 6A, 10V
Vgs(th) (Max) @ Id:	3V @ 250µA
Gate Charge (Qg) (Max) @ Vgs:	10.8nC @ 10V
Input Capacitance (Ciss) (Max) @ Vds:	650pF @ 20V
Power - Max:	2W
Operating Temperature:	-55°C ~ 150°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	8-SOIC

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AO4840 Application Field and Working Principle

The AO4840 is a type of field-effect transistor (FET) array designed for a wide range of applications. Specifically, it is a monolithic quad complementary MOSFET array. A field-effect transistor (FET) is a semiconductor device that controls current flow depending on the applied electric field. It is composed of an insulated gate that acts as an electrode between two semiconductor materials.The AO4840 works by controlling the transfer of electrons between the two MOSFETs. In this way, it regulates the flow of electric current from an input to an output. The two MOSFETs form a complementary pair, which means that one is configured for an enhancement mode and the other for a depletion mode. This enables the transistor to have multiple functions.The MOSFETs in the AO4840 have a frequency range of 20 MHz - 40 MHz, making them suitable for use in a wide range of applications. They are especially useful in radio-frequency (RF) applications such as amplifiers and oscillators; they can also be used in audio, video, and communications systems. They have a low on-resistance of 12 milliOhm, meaning that they can support high current without producing excess heat.The AO4840 is designed to be highly efficient and reliable. It has an operating temperature range of -55 to +150ºC and a high temperature storage range of -55 to +175ºC. It also has a low power consumption and can handle high voltage up to 1.225 kV.In terms of features, the AO4840 has two selectable rules. The first is the "on-level” rule, which dictates that the transistors must both be either turned on or turned off. The other option is the "floating” rule, which allows one of the transistors to stay in an off state while the other is turned on. This can be useful for situations requiring both voltage and current control.In conclusion, the AO4840 is an advanced type of FET array with many different applications. Its ability to support high current with a low on-resistance makes it suitable for high-frequency and audio applications. Its ability to be configured according to either the "on-level" or "floating" rule ensures that it can be adapted for multiple roles. Furthermore, its wide operating temperature range and high voltage tolerance make it capable of handling tough conditions.

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