E-TDA7375AV - 4x45W Quad Audio Amplifier | STMicroelectronics
MPN： E-TDA7375AV ✓ 啟用中E-TDA7375AV 概覽
An audio power amplifier is an electronic device that increases the amplitude of low-power audio signals to a level sufficient to drive loudspeakers. In the signal chain, the audio amplifier sits between the preamplifier (or head unit) and the speakers, providing the necessary voltage and current gain. The TDA7375AV belongs to the class of analog linear amplifiers, specifically a class AB amplifier, which offers a good balance between efficiency and linearity, minimizing distortion while maintaining reasonable power dissipation.
Key features of the E-TDA7375AV include a high output power of 45W per channel, a wide supply voltage range, and a low distortion of 0.03% at 1kHz. It also incorporates standby and mute functions for power management, and a pop-free turn-on/off sequence to eliminate audible clicks. The device is protected against short circuits, thermal overload, and overvoltage, ensuring reliable operation in harsh automotive environments.
The amplifier uses a complementary output stage with a bipolar junction transistor (BJT) architecture, providing high current capability and low saturation voltage. The device is available in a Multiwatt-15 package, which offers excellent thermal performance through a large exposed metal tab that can be soldered to the PCB for heat dissipation. The package is designed for easy mounting and is compatible with standard through-hole assembly processes.
Typical applications include car radio amplifiers, multimedia systems, and aftermarket audio upgrades. The high output power and low distortion make it ideal for driving 4-ohm speakers in a car cabin, delivering clear and powerful sound. The standby and mute functions allow for efficient power management, reducing battery drain when the audio system is not in use.
When designing with the E-TDA7375AV, it is essential to provide adequate heatsinking to manage the thermal dissipation, especially when driving high power levels. The device's thermal shutdown protection prevents damage from overheating, but proper PCB layout with a large copper area under the package is recommended to maintain junction temperature within safe limits.
直接替換替代品，適用於 E-TDA7375AV — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： E-TDA7375AV （相同外形與佔位） — 差異在於 Mounting Type, Package, Input Impedance, Number of Channels, Operating Temperature Range.
TDA7375V
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
TDA7375A
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
TDA7375
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
E-TDA7375AV 最大額定值與電氣特性
| Output Power | 45W per channel (4 channels, 4 ohm, 14.4V) |
| Supply Voltage Range | 8V to 18V |
| 靜態電流 | 120 mA |
| Total Harmonic Distortion (THD) | 0.03% at 1kHz |
| Signal-to-Noise Ratio | 90 dB |
| Channel Separation | 60 dB |
| Input Impedance | 30 kOhm |
| Output Offset Voltage | 50 mV |
| Standby Current | 10 uA |
| 工作溫度範圍 | -40C to +105C |
| 封裝 | Multiwatt-15 |
| 安裝類型 | Through Hole |
| RoHS 狀態 | Compliant |
| Number of Channels | 4 |
| 輸出類型 | Class AB |
E-TDA7375AV 腳位配置
| 腳位 1 | OUT1 — Output channel 1 |
| 腳位 2 | GND — Ground |
| 腳位 3 | OUT2 — Output channel 2 |
| 腳位 4 | VCC — Power supply |
| 腳位 5 | OUT3 — Output channel 3 |
| 腳位 6 | GND — Ground |
| 腳位 7 | OUT4 — Output channel 4 |
| 腳位 8 | IN1 — Input channel 1 |
| 腳位 9 | IN2 — Input channel 2 |
| 腳位 10 | IN3 — Input channel 3 |
| 腳位 11 | IN4 — Input channel 4 |
| 腳位 12 | SVR — Supply voltage ripple rejection |
| 腳位 13 | STBY — Standby control |
| 腳位 14 | MUTE — Mute control |
| 腳位 15 | GND — Ground |
典型應用
E-TDA7375AV 適用於 6 應用s: Car Radio Amplifier, Multimedia System, Aftermarket Audio Upgrade, Home Theater System, Portable PA System, Marine Audio System.
Car Radio Amplifier
The E-TDA7375AV is ideal for car radio amplifiers due to its high output power of 45W per channel and low distortion. It can drive 4-ohm speakers directly, providing clear and powerful audio in the car cabin. The wide supply voltage range (8V to 18V) ensures stable operation during battery voltage fluctuations. The standby and mute functions help reduce battery drain when the audio system is not in use, making it a practical choice for automotive applications.
推薦
Multimedia System
In multimedia systems, the E-TDA7375AV provides high-fidelity audio amplification for multiple channels. Its low THD of 0.03% ensures accurate sound reproduction, while the high SNR of 90dB minimizes background noise. The device's compact Multiwatt-15 package allows for space-efficient PCB layouts, making it suitable for integrated multimedia units. The pop-free turn-on/off sequence enhances user experience by eliminating audible clicks.
推薦
Aftermarket Audio Upgrade
For aftermarket audio upgrades, the E-TDA7375AV offers a cost-effective solution to boost audio output power. Its 45W per channel capability can significantly improve sound quality and volume compared to factory head units. The device's thermal protection ensures reliable operation even under heavy load, and the standby function helps preserve battery life. The Multiwatt-15 package is easy to mount on existing PCBs, simplifying installation.
推薦
Home Theater System
The E-TDA7375AV can be used in home theater systems to drive multiple speakers. Its quad-channel configuration allows for 4.0 or 4.1 surround sound setups. The low distortion and high SNR ensure immersive audio experiences. The device's wide supply voltage range makes it adaptable to various power supplies, and the standby function reduces power consumption when not in use.
推薦
Portable PA System
In portable PA systems, the E-TDA7375AV provides reliable amplification for public address applications. Its high output power ensures clear voice reproduction over long distances. The device's low quiescent current and standby function are beneficial for battery-powered operation, extending battery life. The thermal shutdown protection prevents damage from overheating during prolonged use.
推薦
Marine Audio System
The E-TDA7375AV is suitable for marine audio systems due to its robust design and wide operating temperature range (-40C to +105C). It can withstand harsh environmental conditions, making it ideal for boats and other marine vehicles. The device's protection features, including short-circuit and thermal overload, ensure reliable operation in demanding applications.
推薦
推薦產品摘要
工程參考資料，適用於 E-TDA7375AV — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | TDA7375V | TDA7375A | TDA7375 | TDA7377 |
|---|---|---|---|---|---|
| Package | Multiwatt-15 | Multiwatt-15 | Multiwatt-15 | Multiwatt-15 | Multiwatt-15 |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Output Power per Channel | 45W | 45W | 40W | 45W | 38W |
| Number of Channels | 4 | 4 | 4 | 4 | 2 |
| Supply Voltage Range | 8V to 18V | 8V to 18V | 8V to 18V | 8V to 18V | 8V to 18V |
| THD at 1kHz | 0.03% | 0.03% | 0.03% | 0.03% | 0.03% |
| Signal-to-Noise Ratio | 90 dB | 90 dB | 90 dB | 90 dB | 90 dB |
| Quiescent Current | 120 mA | 120 mA | 120 mA | 120 mA | 120 mA |
主要差異化特點
- Higher output power than TDA7375A (對比TDA7375A)
- Quad-channel configuration vs TDA7377 (對比TDA7377)
- Identical to TDA7375V (對比TDA7375V)
設計說明
The E-TDA7375AV can dissipate significant power when driving high output levels. For example, at 45W per channel into 4 ohms, the power dissipation can exceed 20W. The Multiwatt-15 package's metal tab must be soldered to a large copper area on the PCB to act as a heatsink. A thermal resistance of 2 C/W or lower is recommended for the heatsink to keep the junction temperature below 150C.
Place the power supply decoupling capacitors (100uF electrolytic and 100nF ceramic) as close as possible to the VCC pin. The input capacitors (0.1uF) should be placed near the input pins to filter high-frequency noise. Use a star-ground topology to minimize ground loops and reduce noise coupling between channels.
Do not operate the amplifier without a load connected, as this can cause output stage damage. Ensure the standby and mute pins are properly controlled to avoid pop noise during power-up. The SVR pin should be bypassed with a 10uF capacitor to improve ripple rejection and reduce turn-on transients.
合規資訊
RoHS compliant per STMicroelectronics product page. Not AEC-Q100 qualified as it is not a digital IC.
