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STMicroelectronics TDA2004R
- Part No.:
- TDA2004R
- Manufacturer:
- STMicroelectronics
- Category:
- Audio Amplifiers
- Package:
- Multiwatt-11 (Vertical, Bent and Staggered Leads)
- Datasheet:
-
TDA2004R.pdf
- Description:
- IC AMP B STEREO 12W 11MULTIWATT
- Quantity:
- Payment:
- Shipping:
Inventory:1,675
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Product details
Overview
TDA2004R from STMicroelectronics is a Class B dual-channel audio power amplifier in Multiwatt11 package, delivering 10 W per channel into 4 Ω at 14.4 V supply with ≤0.2% THD, designed specifically for automotive radio systems. It supports low-impedance loads down to 1.6 Ω, integrates thermal shutdown and load-dump surge protection, and operates across 8–18 V DC supply range.
For engineers reviewing the TDA2004R datasheet, TDA2004R pinout, TDA2004R application, or TDA2004R equivalent, key selection criteria include output current capability (3.5 A peak), built-in open-ground and inductive-load protection, quiescent drain current (62–120 mA), and compatibility with compact car radio PCB layouts requiring minimal external components.
Technical Context
The TDA2004R implements dual independent Class B amplifier stages with internal biasing, fixed closed-loop gain of 50 dB (±0.5 dB matching), and integrated protection logic for thermal shutdown (145 °C junction), AC short-circuit to ground, polarity inversion (up to 10 A), and load-dump surges (withstandable up to 40 V peak). Its bootstrap-capable architecture enables stable operation into 1.6 Ω loads without external emitter followers.
It features high PSRR (45 dB typical at 100 Hz), low input noise (1.5 µV rms), and wide bandwidth (15 kHz –3 dB at 4 Ω), with input resistance of 70–200 kΩ and low-frequency response down to 35 Hz (4 Ω load). The device requires no electrical insulation between its tab (Pin 6) and heatsink, simplifying mechanical integration in space-constrained automotive head units.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Power (per channel) | 10 W @ 14.4 V, 4 Ω, 1 kHz, THD = 10% - sufficient for mid-power car stereo front channels |
| Total Harmonic Distortion | 0.2% typ. @ 14.4 V, 4 Ω, 50 mW–4 W - meets OEM audio fidelity requirements for broadcast band reception |
| Supply Voltage Range | 8–18 V DC - compatible with nominal 12 V automotive systems including cold-crank (up to 14.4 V) and load-dump transients (protected up to 40 V) |
| Peak Output Current | 3.5 A (repetitive) - enables direct drive of low-Z speakers (1.6 Ω minimum) without external current boosters |
| Thermal Shutdown Threshold | 145 °C junction temperature - prevents latch-up during sustained overload or poor heatsinking in enclosed dash environments |
| Input Noise Voltage | 1.5 µV rms (22 Hz–22 kHz) - ensures clean amplification of weak FM/AM tuner signals without audible hiss |
| Cross Talk | 50 dB @ 1 kHz - maintains stereo separation critical for spatial audio imaging in vehicle cabins |
Pinout & Package
Package: Multiwatt11 vertical, thermally enhanced with metal tab (Pin 6) electrically connected to GND and mechanically bonded to heatsink - no insulating pad required.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (BOOTSTRAP(1)) | Bootstrap capacitor connection for Channel 1 | Enables rail-to-rail output swing into low-Z loads by elevating upper driver supply |
| 2 (INPUT−(1)) | Inverting input for Channel 1 | Accepts differential or single-ended signal; sets closed-loop gain with R2/R3 |
| 3 (SVRR) | Supply voltage ripple rejection filter node | Connects external C3 (10 µF) to improve PSRR against alternator ripple |
| 4 (GND) | Analog ground reference | Common return for inputs, feedback, and bias networks; separate from power ground path |
| 5 (INPUT−(2)) | Inverting input for Channel 2 | Dual-channel symmetry allows identical gain-setting resistor network as Channel 1 |
| 6 (INPUT+(2)) | Non-inverting input for Channel 2 | Used for unity-gain buffer or differential input configuration; tied to GND for single-ended |
| 7 (OUTPUT(2)) | Channel 2 output terminal | Delivers amplified audio to right-channel speaker; capable of 3.5 A peak into 1.6 Ω |
| 8 (+VS) | Positive supply input | Accepts 8–18 V DC; internal clamp protects against 40 V load-dump transients |
| 9 (OUTPUT(1)) | Channel 1 output terminal | Delivers amplified audio to left-channel speaker; shares same thermal and current specs as Pin 7 |
| 10 (INPUT+(1)) | Non-inverting input for Channel 1 | Configurable for differential input or referenced to GND for standard single-ended use |
| 11 (TAB) | Heatsink interface / GND connection | Electrically tied to Pin 6; must be mounted directly to chassis/heatsink without insulator |
Key Features
| Feature | Design Value |
|---|---|
| Integrated load-dump protection | Withstands 40 V/50 ms pulses on +VS pin - eliminates need for external TVS in basic automotive designs |
| Open-ground fault tolerance | Internal diodes prevent latch-up or destruction if ground trace opens during operation - critical for field-repair reliability |
| Inductive load safeguard | Built-in flyback diode clamps back-EMF from speaker voice coils - avoids oscillation or MOSFET failure in bass-heavy systems |
| Thermal foldback | Automatically reduces output power above 145 °C junction - preserves device integrity without hard shutdown |
| No isolation required | Tab (Pin 6) is GND-connected; direct metal-to-heatsink mounting saves assembly cost and improves thermal resistance by ~3 °C/W |
Applications
| Car Radio Audio Amplifier | Compact Rear-Seat Entertainment System |
|---|---|
|
Use Scenario: Integrated stereo amplifier in OEM or aftermarket dashboard-mounted AM/FM/CD head unit. IC Role / Device Role / Timing Role: Dual-channel Class B power stage driving 4 Ω front speakers with <0.2% THD at 10 W/channel. Use Value: Eliminates need for external current boosters or discrete protection circuits, reducing BOM count by ≥7 components. |
Use Scenario: Low-profile audio subsystem powering rear-seat speakers in minivans or SUVs with limited enclosure depth. IC Role / Device Role / Timing Role: Compact 10+10 W stereo amplifier operating from vehicle battery with integrated thermal management. Use Value: Enables PCB-mount design with no heatsink insulation, achieving 30 W total dissipation in <25 cm² board area. |
| Aftermarket Speaker Booster Module | Marine Audio Distribution Unit |
|
Use Scenario: Add-on power booster placed between factory head unit and upgraded speakers in retrofit installations. IC Role / Device Role / Timing Role: High-current output stage accepting line-level input and delivering 3.5 A peak into 2 Ω marine speakers. Use Value: Survives salt-humidity environments via robust internal protection against polarity reversal and open-ground faults. |
Use Scenario: Waterproof audio distribution module powering multiple cabin zones on boats or RVs with unstable 12 V supplies. IC Role / Device Role / Timing Role: Dual-channel amplifier tolerant of 28 V cranking surges and 120 V/2 ms load-dump transients via LC filtering. Use Value: Reduces external protection component count by 4× (no separate TVS, reverse-polarity MOSFET, or thermal sensor needed). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel automotive audio amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDA2030A | Single-channel, 14 W @ 4 Ω, no bootstrap, higher THD (0.5%) | Requires two devices for stereo; lacks load-dump and open-ground protection | Select only when board space allows dual placement and external protection is acceptable |
| LM4990 | Class D, 11 W ×2, 90% efficiency, requires external MOSFETs and LC filters | Lower heat generation but needs more layout area and EMI mitigation | Prefer for thermally constrained enclosures where efficiency >70% is mandatory |
Compared with TDA2030A, the TDA2004R delivers true stereo integration and automotive-grade protection in one package; compared with LM4990, it offers simpler layout and lower EMI risk at the cost of 20% lower efficiency - making it optimal for cost-sensitive, space-limited car radio designs.
Availability
TDA2004R is available at Aetrix Electronics and suitable for automotive infotainment systems, aftermarket speaker amplifiers, and marine audio distribution units requiring stable component supply across extended temperature and voltage transients.
Supply support for TDA2004R 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, Switzerland, specializing in automotive, industrial, and power management ICs with broad manufacturing and quality certifications.
The TDA2004R belongs to ST's automotive audio amplifier product line, engineered specifically for cost-effective, robust stereo amplification in 12 V vehicle environments - emphasizing protection, thermal resilience, and minimal external component count.
FAQ
What is the maximum safe load impedance for continuous operation?
The TDA2004R is rated for continuous operation into loads as low as 1.6 Ω, verified per datasheet Figure 8 and Table 4. Driving 1.6 Ω loads requires proper heatsinking (Rth-j-case ≤ 3 °C/W) and adherence to the recommended LC network for load-dump suppression. Operation below 1.6 Ω risks thermal shutdown or current-limit activation.
Can the TDA2004R be used in bridged-tied-load (BTL) mode?
No - the TDA2004R is not designed for BTL operation. Its output stage lacks complementary symmetry and internal bootstrap control for push-pull bridge configurations. Attempting BTL will cause severe distortion, overheating, and potential device failure. Use dedicated BTL amplifiers like TDA7388 for such topologies.
Is external heatsinking mandatory, and what thermal resistance is required?
Yes - external heatsinking is mandatory for any continuous output power >1 W per channel. With Rth-j-case = 3 °C/W and max Tj = 145 °C, a heatsink with Rth-heatsink-ambient ≤ 4 °C/W is required to sustain 10 W/channel at 25 °C ambient (per Figure 18). No insulator is needed due to GND-connected tab.
Does the TDA2004R support single-supply operation with virtual ground?
No - the TDA2004R requires a true split or single-ended ground-referenced supply. Its input stage is not biased for virtual-ground operation, and the GND pin (Pin 4) serves as the sole analog reference. Using virtual ground will cause DC offset instability, clipping, and possible protection activation.
TDA2004R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- Multiwatt-11 (Vertical, Bent and Staggered Leads)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- Class B
- Output Type:
- 2-Channel (Stereo)
- Max Output Power x Channels @ Load:
- 12W x 2 @ 2Ohm
- Voltage - Supply:
- 8V ~ 18V
- Features:
- Short-Circuit and Thermal Protection
- Mounting Type:
- Through Hole
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 11-Multiwatt
TDA2004R FAQ
1.How can I place an order for TDA2004R through Aetrix?
Please submit a Request for Quotation (RFQ) for TDA2004R 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 TDA2004R reliable?
The price and inventory of TDA2004R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA2004R is usually 5 days.
3.What payment methods are accepted for TDA2004R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA2004R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TDA2004R?
TDA2004R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TDA2004R 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 TDA2004R?
For technical support, including TDA2004R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA2004R requirements.
6.How does Aetrix verify that TDA2004R is sourced from the original manufacturer or authorized distributors?
All TDA2004R 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 TDA2004R meets industry standards.
7.What is the process for return or replacement of TDA2004R?
All TDA2004R units undergo pre-shipment inspection (PSI). If there is an issue with TDA2004R, 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 TDA2004R part is unused and in its original packaging.
Return procedure for TDA2004R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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