STMicroelectronics TDA7240AH
| Parameters | |
|---|---|
| Supplier Device Package | 7-HEPTAWATT |
| Voltage - Supply | 8V ~ 18V |
| Max Output Power x Channels @ Load | 20W x 1 @ 4Ohm |
| Features | Short-Circuit and Thermal Protection, Standby |
| Package | Tube |
| Product Status | Obsolete |
| Base Product Number | TDA7240 |
| REACH Status | REACH Unaffected |
| Standard Package | 50 |
| ECCN | EAR99 |
| HTSUS | 8542.33.0001 |
| Series | - |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| RoHS Status | ROHS3 Compliant |
| Package / Case | Heptawatt-7 (Horizontal, Bent and Staggered Leads) |
| Mfr | STMicroelectronics |
| Mounting Type | Through Hole |
| Operating Temperature | -40°C ~ 150°C (TJ) |
| Type | Class AB |
| Output Type | 1-Channel (Mono) |
TDA7240AH Class AB Audio Chip, Automotive Power Amp IC
The TDA7240AH is a high-performance Class AB audio power amplifier IC designed for automotive and high-fidelity audio applications. This monolithic integrated circuit delivers up to 10W per channel (into 4Ω loads) with low distortion and high efficiency, making it ideal for car radios, multimedia systems, and professional audio equipment. The TDA7240AH features a wide operating voltage range (8V to 18V), ensuring reliable performance in varying automotive power conditions, while its thermal shutdown and short-circuit protection mechanisms enhance system reliability.
Engineered for superior sound quality, the TDA7240AH incorporates advanced biasing circuitry to minimize crossover distortion and optimize audio fidelity. The chip supports bridge-tied load (BTL) and parallel BTL (PBTL) configurations, allowing flexible system design for different power requirements. Its low quiescent current and high power supply rejection ratio (PSRR) ensure minimal power consumption and noise interference, even in noisy automotive environments. The TDA7240AH is housed in a compact Multiwatt15 package, optimizing heat dissipation while maintaining board space efficiency.
The TDA7240AH includes built-in mute and standby functions, enabling efficient power management during idle or low-power modes. Its high current capability (up to 3.5A peak output) ensures robust performance when driving demanding speaker loads, while its low output impedance guarantees efficient power transfer. The chip's advanced protection circuitry, including over-temperature and load-dump protection, makes it a dependable choice for automotive audio systems where reliability is critical. With its proven track record in professional audio applications, the TDA7240AH remains a top choice for engineers seeking high-quality sound amplification with minimal design complexity.
For applications requiring alternative audio amplifier ICs, consider the following comparable chips:
● TDA7388: A 4-channel Class AB amplifier (17W per channel) designed for car audio systems, offering higher power output and integrated diagnostics.
● TDA7498E: A 2x50W Class D stereo amplifier with high efficiency and low EMI, ideal for modern digital audio systems.
● STK4141II: A hybrid IC power amplifier (2x22W) with built-in protection circuits, suitable for high-end audio equipment.
