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STMicroelectronics TDA7802PD
- Part No.:
- TDA7802PD
- Manufacturer:
- STMicroelectronics
- Category:
- Audio Special Purpose
- Package:
- -
- Datasheet:
-
TDA7802PD.pdf
- Description:
- IC AMP AB QUAD 72W POWERSO-36
- Quantity:
- Payment:
- Shipping:
Inventory:3,676
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Product details
Overview
TDA7802PD from STMicroelectronics is a quad-channel Class AB digital-input audio power amplifier in PowerSO36 package, integrating 24-bit DAC, I²S/TDM interface, programmable PLL, and full diagnostics. It delivers 4 × 28 W into 4 Ω at 14.4 V (THD = 10%), supports 6–18 V supply (start-stop compatible), and meets AEC-Q100 Rev. G for automotive infotainment systems.
For engineers reviewing the TDA7802PD datasheet, TDA7802PD pinout, TDA7802PD application, or TDA7802PD equivalent, key selection criteria include 110 dB A-weighted dynamic range, 1 Ω load driving capability (PowerSO36 only), I²C-configurable gain/mute modes, DC/AC speaker load detection, and thermal/clip diagnostics via dedicated open-drain CDdiag pin.
Technical Context
The TDA7802PD implements a fully integrated BCD-process quad bridge amplifier with on-chip 24-bit D/A conversion, achieving ≥115 dB SNR and >110 dB A-weighted dynamic range. Its SB-I high-efficiency architecture reduces average dissipation by up to 50% versus conventional Class AB under real music signals.
A programmable PLL locks to 64×Fs or 50×Fs input clocks across 44.1/48/96/192 kHz sample rates. Diagnostics include per-channel DC offset detection, AC load status, overcurrent, thermal warning, and POR reporting - all accessible via I²C bus or monitored on the open-drain CDdiag pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Channels | 4 independent bridge outputs (front left/right, rear left/right) |
| Max Output Power | 4 × 72 W into 2 Ω @ 14.4 V, enabling high-SPL cabin audio without external heatsinking |
| Dynamic Range | 110 dB (A-weighted), ensuring low-noise reproduction of quiet passages in automotive cabin environments |
| Supply Voltage Range | 6–18 V DC, supporting start-stop battery profiles down to 6 V without mute or dropout |
| Digital Input Interface | I²S, TDM-4Ch/8Ch/16Ch, 1.8 V/3.3 V logic compatible - direct connection to SoC/DSP without level-shifting |
| Diagnostics | Per-channel DC offset, short-to-rail, open-load, thermal warning, and clip detection reported via I²C or CDdiag pin |
| Package | PowerSO36 (slug-up), thermally optimized for PCB copper pour mounting and high-power dissipation |
Pinout & Package
PowerSO36 is a thermally enhanced slug-up surface-mount package with exposed die attach pad (TAB) for direct PCB thermal coupling. Pin 1 is TAB (thermal ground), and pins 14 & 24 are NC (no internal connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 TAB | Thermal ground / mechanical anchor | Must be soldered to large copper pour for thermal conduction; not electrically isolated |
| 2 CDdiag | Open-drain diagnostic output | Active-low indicator for thermal warning, overcurrent, DC offset, or POR - requires external pull-up |
| 3 OUT4−, 7 OUT4+, 32 OUT3+, 36 OUT3−, 12 OUT2+, 17 OUT2−, 19 OUT1−, 23 OUT1+ | Bridge output terminals | Each pair drives one speaker; no external bootstrap capacitors required |
| 4 & 6 VCC34, 13 & 16 VCC12 | Positive supply rails | Dual rail design isolates front/rear channel supplies to reduce crosstalk and improve PSRR |
| 5, 15, 22, 33 PWGNDx | Channel-specific power grounds | Separate ground returns per channel minimize ground bounce and inter-channel interference |
| 10 & 35 ADD1/ADD2 | I²C address select inputs | Set device I²C address (0x48–0x4F) for multi-amplifier bus configurations |
| 8 SDAlm, 9 SCLlen | I²C data/clock or legacy mute/enable | Hardware fallback: SDAlm = low mutes all channels; SCLlen = low disables I²C and enables H/W control mode |
| 20 LOAD1A, 21 LOAD1B | Load configuration inputs | Select 1 Ω or 2 Ω minimum load per channel pair - enables safe 1 Ω operation in PowerSO36 only |
Key Features
| Feature | Design Value |
|---|---|
| SB-I high-efficiency architecture | Reduces average power dissipation by up to 50% vs. Class AB under real-world music signals, easing thermal design |
| Integrated 24-bit D/A converter | Enables direct digital input without external DAC, delivering ≥115 dB SNR and >110 dB dynamic range |
| Per-channel diagnostics | Real-time detection of DC offset, open/short load, thermal overload, and clipping - reported per channel via I²C |
| Start-stop compatible operation | Stable operation from 6 V to 18 V supply, meeting OEM requirements for engine cranking and stop-start cycles |
| Flexible digital audio interface | Supports I²S, TDM-4/8/16 channel formats at 44.1–192 kHz, enabling scalable integration with multi-core audio SoCs |
Applications
| Automotive Infotainment Head Unit | Advanced Driver Assistance Display Audio |
|---|---|
Use Scenario: 4-speaker cabin audio system in premium head unit with digital signal processing and voice prompt feedback. IC Role / Device Role / Timing Role: Quad-channel Class AB amplifier receiving I²S audio streams from application processor; provides analog speaker drive with integrated diagnostics. Use Value: Eliminates external DAC and level shifters; diagnostics enable automated speaker fault logging during vehicle self-test sequences. | Use Scenario: Audio alert subsystem for ADAS warnings (lane departure, blind spot, forward collision) using discrete speakers near driver's ear. IC Role / Device Role / Timing Role: Low-latency, high-SNR audio driver for time-critical safety prompts; operates reliably during 6 V cranking events. Use Value: Start-stop compatibility ensures uninterrupted alert playback during engine restart; clip detection prevents distorted warnings. |
| Aftermarket Digital Car Stereo | Commercial Vehicle Cabin Entertainment |
Use Scenario: Retrofit stereo with digital optical/coaxial input supporting high-res audio (96/192 kHz) and multi-zone control. IC Role / Device Role / Timing Role: Digital-input quad amplifier with I²C-configurable gains and independent front/rear mute - controlled via MCU host. Use Value: Four selectable gains enable precise line-out matching to downstream amplifiers; TDM-16Ch support allows future expansion to 8+ channels. | Use Scenario: Multi-seat entertainment system in buses or coaches with zone-selectable audio and speaker monitoring. IC Role / Device Role / Timing Role: Central audio power stage with per-channel diagnostics feeding CAN bus fault reports to fleet management system. Use Value: Open/short load detection on each channel enables remote identification of broken speaker wires across long cable runs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-channel digital-input audio amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDA7801TR | Same die, Flexiwatt27 package; lacks LOAD1A/LOAD1B pins and 1 Ω driving capability | Lower thermal performance; limited to ≥2 Ω loads; no hardware load selection | Select when board space constraints favor through-hole mounting and 1 Ω operation is unnecessary |
| MAX9744ASA+ | Class D, 20 W × 4 into 4 Ω; I²C-only control; no integrated DAC or TDM support | No native digital audio format flexibility; requires external DAC for non-I²S sources | Select when peak efficiency (>90%) and minimal heatsink area are prioritized over SNR and diagnostic depth |
Compared with TDA7801TR and MAX9744ASA+, the TDA7802PD uniquely combines 110 dB dynamic range, 1 Ω load capability, per-channel diagnostics, and TDM-16Ch support - making it optimal for AEC-Q100-compliant automotive platforms requiring both fidelity and functional safety awareness.
Availability
TDA7802PD is available at Aetrix Electronics and suitable for automotive infotainment head units, ADAS audio alert systems, and aftermarket digital car stereos requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.
Supply support for TDA7802PD includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing microcontrollers, power ICs, sensors, and analog/mixed-signal devices for automotive, industrial, and consumer markets.
The TDA7802PD belongs to ST's automotive-grade audio power amplifier product line, engineered specifically for high-fidelity, diagnostics-rich infotainment systems in vehicles with start-stop functionality and stringent EMC/thermal requirements.
FAQ
What is the minimum supply voltage for continuous operation of the TDA7802PD?
The TDA7802PD operates continuously from 6 V to 18 V DC. At 6 V, it maintains full functionality including diagnostics, I²C communication, and audio playback - validated for engine cranking and start-stop battery profiles per AEC-Q100 requirements.
Does the TDA7802PD require external bootstrap capacitors for its output stage?
No. The TDA7802PD uses an internally compensated bridge output stage with integrated charge pumps. External bootstrap capacitors are not required - simplifying PCB layout and reducing BOM count compared to discrete Class AB solutions.
How is speaker load detection implemented on the TDA7802PD?
Speaker load status is determined via integrated DC and AC sensing circuitry per channel. DC detection identifies open/short conditions; AC detection verifies impedance magnitude and phase. Results are reported individually via I²C register reads or aggregated on the open-drain CDdiag pin.
Can the TDA7802PD operate without I²C communication enabled?
Yes. When SCLlen is held low, the device enters hardware control mode: SDAlm acts as a global mute, UNMUTEhw enables playback, and LOAD1A/LOAD1B set fixed load configuration. All diagnostics remain active and reportable via CDdiag pin.
TDA7802PD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Audio Amplifier
- Applications:
- Audio
- Number of Channels:
- 4
- Interface:
- I2C
- Voltage - Supply:
- -
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Specifications:
- 115dB
- Mounting Type:
- -
- Grade:
- Automotive
TDA7802PD FAQ
1.How can I place an order for TDA7802PD through Aetrix?
Please submit a Request for Quotation (RFQ) for TDA7802PD on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TDA7802PD reliable?
The price and inventory of TDA7802PD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA7802PD is usually 5 days.
3.What payment methods are accepted for TDA7802PD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA7802PD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TDA7802PD?
TDA7802PD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TDA7802PD order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TDA7802PD?
For technical support, including TDA7802PD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA7802PD requirements.
6.How does Aetrix verify that TDA7802PD is sourced from the original manufacturer or authorized distributors?
All TDA7802PD products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TDA7802PD meets industry standards.
7.What is the process for return or replacement of TDA7802PD?
All TDA7802PD units undergo pre-shipment inspection (PSI). If there is an issue with TDA7802PD, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TDA7802PD part is unused and in its original packaging.
Return procedure for TDA7802PD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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