TDA7803A-48X STMicroelectronics Integrated Circuit (Other) In Stock
The TDA7803A-48X is a high-efficiency digital-input automotive quad power amplifier with built-in diagnostics and start-stop compatibility by STMicroelectronics, delivering 4-channel audio amplification in a 48-pin power package. It integrates advanced protection features for in-vehicle infotainment systems. Available from stock with worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- Other
- Pin Count
- 27
- Lifecycle
- ACTIVE
- Datasheet
- TDA7803A-48X Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $6.4992(MOQ 100)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TDA7803A-48X?
- Quad-channel digital audio input architecture eliminates external DAC components in automotive head-unit and amplifier designs
- Start-stop system compatibility maintains audio output fidelity during 12 V bus voltage transients down to the automotive AEC-Q100 Grade 1 qualification range
- Built-in diagnostics detect load-open, short-to-battery, and short-to-ground faults on all 4 output channels, reducing in-vehicle debug time
- High-efficiency Class-D output stage minimizes heat dissipation in space-constrained automotive amplifier modules compared with Class-AB alternatives
What is TDA7803A-48X used for?
The TDA7803A-48X is designed for automotive infotainment head units, amplifier modules, and OEM door-speaker driver boards where 4 independent high-power audio channels are required from a 12 V vehicle bus. Its digital audio input path and integrated diagnostics reduce external component count and simplify compliance with ISO 26262 functional safety requirements. The start-stop compatibility ensures uninterrupted audio output during engine idle-stop events, which is mandatory for modern EU6 and CAFE-compliant vehicle platforms.
What are the specifications of TDA7803A-48X?
| Factory Lead Time | 25Weeks |
| Consumer IC Type | CONSUMER CIRCUIT |
| JESD-609 Code | e3 |
| Terminal Finish | Matte Tin (Sn) |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Mainland China |
Where can I find the TDA7803A-48X datasheet?
TDA7803A-48X Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for TDA7803A-48X?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the TDA7803A-48X maintain audio output during automotive start-stop events when the 12 V bus drops?
The TDA7803A-48X is specifically engineered for start-stop compatibility, sustaining stable 4-channel output during battery voltage sags that can momentarily drop the 12 V supply to as low as 6 V during engine cranking. Internal supply-voltage supervision and bootstrap capacitor management keep the Class-D output stage active through transients lasting up to 50 ms, preventing audible pop or mute events that would otherwise violate OEM audio quality standards.
What built-in diagnostic capabilities does the TDA7803A-48X provide for automotive production testing on a 4-channel amplifier board?
The device continuously monitors all 4 output channels for short-to-battery, short-to-ground, and load-open conditions, reporting fault status via a dedicated diagnostic pin that can be read by a host microcontroller over a standard SPI or I2C bus. During end-of-line testing, this eliminates the need for 4 external current-sense amplifiers, reducing test fixture cost and cutting per-unit test time by approximately 30%.
For an automotive door-speaker amplifier module, how does the Class-D topology of the TDA7803A-48X reduce thermal management requirements compared with a Class-AB quad amplifier?
A Class-D amplifier operating at 90% efficiency at 4 × 20 W output dissipates roughly 9 W total, while a comparable Class-AB device at 60% efficiency would dissipate approximately 53 W. For the TDA7803A-48X in a door-module application, this efficiency difference means a simple aluminum heat spreader of 20 cm² suffices instead of an extruded heatsink, saving 15 g of mass and 8 mm of module thickness in a space-critical door-panel installation.
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Why Buy from FindMyChip
About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 100+ | $7.4000 | $740.00 |
| 250+ | $7.0400 | $1760.00 |
| 357+ | $6.8400 | $2441.88 |
| 1428+ | $6.5669 | $9377.53 |
| 2856+ | $6.5331 | $18658.39 |
| 5712+ | $6.4992 | $37123.43 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
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