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
Key Features
- 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
Applications
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.
Specifications
| 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 |
Alternate & Equivalent Parts
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.
Related Guides
How to Choose a 3528 SMD Indicator LED for Blue Status Lighting: Selection Guide
A practical 3528 SMD indicator LED selection guide using 150141BS73100 and related Wurth 150141 variants for blue status lighting.
Jul 5, 2026
BAS70KFILM Design Guide for Low-Leakage Signal Clamping and RF Detector Inputs
Practical BAS70KFILM design guidance for signal clamps, RF detector inputs, leakage control, capacitance, layout, and sourcing alternatives.
Jul 5, 2026
How to Choose a BAS70 Schottky Diode for Signal Clamping: Selection Guide
A practical BAS70KFILM and BAS70-family Schottky diode selection guide for signal clamping, RF detection, leakage, and topology choices.
Jul 4, 2026
AMC1202DWVR Design Guide for Isolated Current Sensing
Practical AMC1202DWVR design guide covering shunt sizing, isolation layout, input filtering, ADC scaling, and sourcing choices.
Jul 4, 2026
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
“Response time is incredible — usually under 4 hours. They understand that production lines can't wait.”