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CD4440 IC: Datasheet, Amplifier Circuit Diagram, Pinout

更新時間： Aug 23, 2023 閲覧数： 6186

The CD4440 IC is a stereo audio power amplifier integrated circuit (IC) developed by Texas Instruments to provide amplification for audio signals. 6W means that the maximum output power of each channel is 6 watts, which means that under the proper supply voltage and load impedance conditions, CD4440 can provide 6 watts of power output to the connected speakers.

The CD4440 can work in two different amplification modes. In stereo mode, it provides amplification for the left and right channels independently. While in BTL (Bridge-Push-Pull) mode, it can connect two channels into a single amplified output, which can provide higher output power. BTL mode is useful for applications that require greater volume, such as some car audio systems.

CD4440 IC Specifications

Supply voltage	13.2V
Dual-mode Output power	6W
Bridge mode Output power	19W
Surge supply voltage	50V
Ripple rejection ratio	46dB
Allowable power dissipation	15W
Quiescent current	100 to 200mA
Maximum operating voltage	18V
Operating temperature	-20°C to 75°C

CD4440 IC Features

Two-Channel Power Amplifier: The CD4440 is a two-channel power amplifier for stereo audio applications.

Stereo Mode: In stereo mode, the typical output power is 6 watts per channel. This makes the CD4440 suitable for applications requiring moderate volume, such as small audio systems and portable speakers.

BTL mode: In BTL mode, CD4440 can provide higher output power up to 19 watts per channel. This is useful for applications that require higher volumes, such as car audio systems.

Few External Components: The CD4440 is designed to minimize the number of external components required, simplifying circuit design and assembly.

Low "porf" sound when powering on/off: The noise generated when the power is switched on and off is very small and will not significantly affect the audio quality.

Good Ripple Rejection Ratio: The CD4440 has a good Ripple Rejection Ratio, which helps maintain the clarity and accuracy of the output audio.

Good channel isolation: Channel isolation refers to the fact that the output of one channel does not interfere with another channel, which helps ensure accurate separation of stereo sounds.

Low Input Noise: With proper circuit settings, the CD4440 has very low input noise, which helps provide clear audio output.

Low Distortion: The CD4440 generally exhibits low levels of distortion, which helps maintain the high quality of the audio.

Convenient cooling plate design: In order to effectively dissipate heat, the design of CD4440 can be easily combined with the cooling plate to ensure proper temperature during operation.

Internal mute function: CD4440 usually has internal mute function, which can mute the output audio when needed.

Internal protection functions: CD4440 integrates multiple protection functions, including thermal protection, overvoltage protection, impact voltage protection and short circuit protection between circuit pins. These protection features help prevent damage to ICs and connected devices.

Package: CD4440 is often packaged in FSIP14, which is easy to integrate into the circuit board.

CD4440 IC Pinout

Pin	Function	Pin	Function
1	NC	8	IN2+ (Channel 2 Positive Input)
2	NC	9	NC
3	VCC (Power Supply)	10	BTL/SE (BTL/SE mode select)
4	NC	11	GND (Ground)
5	IN1- (Channel 1 Negative Input)	12	MUTE (Mute Control)
6	IN1+ (Channel 1 Positive Input)	13	STBY (Standby Control)
7	IN2- (Channel 2 Negative Input)	14	OUT (Output)

CD4440 IC Functional Block Diagram

Test Circuit

Stereo Mode

BTL mode 1

BTL mode 2

Characteristic Curve

Stereo Mode

BTL mode 1

BTL mode 2

Package Size (unit: mm)

CD4440 IC Application

The CD4440 IC is commonly used in a variety of audio amplifier applications due to its stereo power amplification capabilities and features. Here are some common applications where the CD4440 IC can be employed.

Portable Speakers: The CD4440 can be used to drive speakers in portable audio devices such as Bluetooth speakers, MP3 players, and portable radios, providing better sound quality and volume output.

Desktop Speakers: It can also be utilized in small desktop speaker systems for computers or other multimedia devices.

Car Audio Systems: The CD4440's ability to provide decent power output makes it suitable for car audio systems, where it can drive car speakers effectively.

Home Audio Systems: It can be incorporated into mini audio systems, bookshelf speakers, or home theater setups, providing audio amplification for improved audio performance.

DIY Audio Projects: Enthusiasts can integrate the CD4440 into various DIY audio projects like amplifiers, preamplifiers, and audio distribution systems.

Educational Projects: The IC is often used in educational projects to demonstrate basic audio amplifier principles and electronics.

Public Address Systems: The CD4440 can be employed in small-scale public address systems for events, presentations, or gatherings.

Musical Instruments: Some musical instruments and practice amplifiers can benefit from the amplification provided by the CD4440.

Gaming Consoles: The IC can be used in external speakers or audio enhancements for gaming consoles to enhance the audio experience.

Industrial Audio: In industrial settings, the CD4440 might be used in audio systems for intercoms, alarms, and announcements.

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Stella Brinkley

Stella Brinkley is a senior electronics engineer with 6 years of experience, specializing in the detailed study of resistor, transistor and package design. Her comprehensive knowledge allows her to drive innovation and excellence in the electronics industry.