Thông số kỹ thuật
| thuộc tính | Giá trị |
| Package / Case | Tape & Reel (TR) |
| Series | DirectDrive® |
| Part Status | Obsolete |
| Type | Class D |
| Output Type | 2-Channel (Stereo) with Stereo Headphones |
| Max Output Powerx Channels @ Load | 1.8W x 2 @ 4Ohm; 45mW x 2 @ 32Ohm |
| Voltage - Supply | 2.5V ~ 5.5V |
| Features | Depop, Differential Inputs, I²C, Mute, Short-Circuit and Thermal Protection, Shutdown |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Supplier Device Package | 28-TQFN (5x5) |
Tổng quan
Description
The MAX9702ETI+T is a high-efficiency, class D audio power amplifier designed by Maxim Integrated, now a part of Analog Devices. This component is tailored for portable audio applications and offers up to 2x20W output power. Key features include low electromagnetic interference (EMI) and high efficiency, which is beneficial for battery-powered devices. It incorporates spread-spectrum modulation, reducing EMI and improving audio quality. The device operates with a low quiescent current, further extending battery life. It has built-in protection features like short-circuit, thermal overload, and undervoltage lockout, enhancing reliability. The MAX9702ETI+T is housed in a thermally efficient, 32-pin TQFN package, making it suitable for compact designs. Its advanced design supports differential and single-ended inputs, providing flexibility in circuit integration. This audio amplifier is ideal for applications in consumer electronics, portable speakers, and other devices requiring efficient, high-quality audio output.
Equivalent
The MAX9702ETI+T is a Class D audio amplifier from Maxim Integrated, suitable for portable devices. Equivalent products include:
1. Texas Instruments TPA2005D1 - a 1.4W Class D amplifier.
2. Analog Devices SSM2306 - a 2W Class D audio amplifier.
3. NXP TFA9887 - a high-efficiency Class D audio amplifier with advanced audio processing.
4. STMicroelectronics TS4990 - a low-power Class D audio amplifier.
These alternatives offer similar functionality and efficiency for portable audio applications.
1. Texas Instruments TPA2005D1 - a 1.4W Class D amplifier.
2. Analog Devices SSM2306 - a 2W Class D audio amplifier.
3. NXP TFA9887 - a high-efficiency Class D audio amplifier with advanced audio processing.
4. STMicroelectronics TS4990 - a low-power Class D audio amplifier.
These alternatives offer similar functionality and efficiency for portable audio applications.
Features
The MAX9702ETI+T is a highly efficient, stereo class D audio amplifier with several key features. It operates with a supply voltage range of 4.5V to 5.5V and delivers up to 2 x 2.5W output power into a 4Ω load, making it suitable for compact and portable audio applications. The device features a high 85% efficiency, minimizing power dissipation and extending battery life in portable devices.
The amplifier supports filterless operation, simplifying design and reducing component count. It offers a low total harmonic distortion plus noise (THD+N) of 0.05%, ensuring high-quality audio output. The MAX9702ETI+T includes integrated click-and-pop suppression, reducing noise during power-up and shutdown. It also features a low-power shutdown mode with a typical current draw of 0.1µA, further conserving battery power when the device is not in use.
Additionally, the device is equipped with over-temperature and short-circuit protection, enhancing reliability and durability. Packaged in a 28-pin TQFN, the MAX9702ETI+T is designed for space-constrained applications.
The amplifier supports filterless operation, simplifying design and reducing component count. It offers a low total harmonic distortion plus noise (THD+N) of 0.05%, ensuring high-quality audio output. The MAX9702ETI+T includes integrated click-and-pop suppression, reducing noise during power-up and shutdown. It also features a low-power shutdown mode with a typical current draw of 0.1µA, further conserving battery power when the device is not in use.
Additionally, the device is equipped with over-temperature and short-circuit protection, enhancing reliability and durability. Packaged in a 28-pin TQFN, the MAX9702ETI+T is designed for space-constrained applications.
Pinout
The MAX9702ETI+T is a 20-pin TQFN (Thin Quad Flat No-Lead) package class D audio amplifier designed for portable audio applications. Its primary function is to drive stereo speakers efficiently with low distortion and high fidelity. The amplifier outputs can deliver up to 2x2W into 4Ω loads with a 5V supply.
The pin configuration includes inputs for the audio signals, outputs to the speakers, power supply pins, and various control and configuration pins. Notable pins include VDD for power, INL+ and INL- for the left audio input, INR+ and INR- for the right audio input, OUTL+ and OUTL- for the left channel output, and OUTR+ and OUTR- for the right channel output. Additionally, pins for shutdown control, gain settings, and other features are available to customize the amplifier's operation.
Overall, the MAX9702ETI+T integrates features such as low EMI emissions, short-circuit protection, and thermal overload protection, making it suitable for compact and efficient audio amplification in portable devices.
The pin configuration includes inputs for the audio signals, outputs to the speakers, power supply pins, and various control and configuration pins. Notable pins include VDD for power, INL+ and INL- for the left audio input, INR+ and INR- for the right audio input, OUTL+ and OUTL- for the left channel output, and OUTR+ and OUTR- for the right channel output. Additionally, pins for shutdown control, gain settings, and other features are available to customize the amplifier's operation.
Overall, the MAX9702ETI+T integrates features such as low EMI emissions, short-circuit protection, and thermal overload protection, making it suitable for compact and efficient audio amplification in portable devices.
Manufacturer
The MAX9702ETI+T is manufactured by Maxim Integrated, which is now part of Analog Devices, Inc. Maxim Integrated was known for designing, manufacturing, and selling analog and mixed-signal integrated circuits. Analog Devices is a global semiconductor company that specializes in data conversion, signal processing, and power management technology. They provide solutions for a wide range of industries, including communications, consumer electronics, healthcare, automotive, and industrial applications.
Application
The MAX9702ETI+T is a Class D audio amplifier commonly used in portable audio devices, such as smartphones, tablets, and MP3 players, due to its efficiency and small size. It is also suitable for use in battery-powered devices where energy efficiency is crucial. Other applications include personal media players, portable speakers, and handheld gaming devices. The amplifier provides high-quality sound output with reduced power consumption, making it ideal for compact audio systems needing extended battery life. Additionally, its low electromagnetic interference (EMI) makes it a good fit for applications requiring minimal noise interference.
Package
The MAX9702ETI+T is a QFN (Quad Flat No-Lead) package type. This specific package is designed for surface mounting and is typically compact, offering efficient heat dissipation and electrical performance.
