TDA2005R - 20W Dual Audio Power Amplifier | STMicroelectronics
MPN: TDA2005R β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.5 | $2.50 |
| 10 | $2.25 | $22.50 |
| 100 | $1.95 | $195.00 |
| 500 | $1.75 | $875.00 |
| 1,000 | $1.55 | $1,550.00 |
Drop-in alternatives for TDA2005R β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
TDA2005
β Drop-Inπ Reference alternative (not in catalog)
TDA2004
β Drop-Inπ Reference alternative (not in catalog)
TDA2006
β Drop-Inπ Reference alternative (not in catalog)
TDA2030
β Drop-Inπ Reference alternative (not in catalog)
TDA2050
β Drop-Inπ Reference alternative (not in catalog)
LM1875
β Drop-Inπ Reference alternative (not in catalog)
TDA7265
β Drop-Inπ Reference alternative (not in catalog)
TDA7297
β Drop-Inπ Reference alternative (not in catalog)
TDA2005R Maximum Ratings & Electrical Characteristics
| Output Power | 20W per channel (4Ξ©, 14.4V) |
| Supply Voltage Range | 8V to 18V |
| Typical Supply Voltage | 14.4V |
| Total Harmonic Distortion (THD) | 0.5% at 1kHz, 10W |
| Signal-to-Noise Ratio | [DATA_NEEDED: SNR value] |
| Quiescent Current | [DATA_NEEDED: quiescent current value] |
| Operating Temperature Range | -40Β°C to +150Β°C |
| Package | Multiwatt-15 |
| Thermal Resistance (junction-to-ambient) | 3.5Β°C/W |
| Amplifier Class | Class AB |
| Number of Channels | 2 (Dual) |
| Load Impedance | 4Ξ© |
| Mute Function | Yes |
| Standby Mode | Yes |
| Short-Circuit Protection | Yes |
| Thermal Protection | Yes |
| RoHS Status | [DATA_NEEDED: RoHS status] |
TDA2005R Pin Configuration
| Pin 1 | OUT1 β Output channel 1 |
| Pin 2 | GND β Ground |
| Pin 3 | IN1 β Input channel 1 |
| Pin 4 | GND β Ground |
| Pin 5 | IN2 β Input channel 2 |
| Pin 6 | GND β Ground |
| Pin 7 | OUT2 β Output channel 2 |
| Pin 8 | VCC β Positive supply voltage |
| Pin 9 | GND β Ground |
| Pin 10 | MUTE β Mute control |
| Pin 11 | STBY β Standby control |
| Pin 12 | GND β Ground |
| Pin 13 | GND β Ground |
| Pin 14 | GND β Ground |
| Pin 15 | GND β Ground |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
TDA2005R is suitable for 6 applications: Car Radio Amplifier, Portable Audio System, Active Speaker System, Home Theater System, Musical Instrument Amplifier, Public Address System.
Car Radio Amplifier
The TDA2005R is ideal for car radio amplifiers, delivering up to 20W per channel into 4Ξ© speakers. Its wide supply voltage range (8V to 18V) and operating temperature range (-40Β°C to +150Β°C) make it suitable for the harsh automotive environment. In a typical car radio, the TDA2005R is placed between the preamplifier and the speakers, driving two speakers directly for a simple stereo solution. The built-in short-circuit and thermal protection ensure reliable operation, while the mute function prevents power-on transients. Compared to discrete amplifier designs, the TDA2005R reduces component count and PCB area, simplifying the overall design. The low quiescent current helps minimize battery drain when the radio is idle.
Recommended
Portable Audio System
The TDA2005R is suitable for portable audio systems due to its low quiescent current and wide supply voltage range, allowing operation from battery sources. In a portable speaker, the TDA2005R amplifies the audio signal from a Bluetooth module or MP3 decoder to drive two speakers. The standby mode reduces power consumption when not in use, extending battery life. The class AB operation provides a good balance between efficiency and audio quality, minimizing distortion. The Multiwatt-15 package, while requiring a heatsink, is compact enough for portable designs. The built-in protections ensure safe operation even with varying battery voltages.
Recommended
Active Speaker System
The TDA2005R is used in active speaker systems to amplify audio signals to drive speakers. In a powered speaker, the TDA2005R is placed between the crossover network and the speaker drivers, providing clean amplification. The low THD (0.5% at 1kHz, 10W) ensures high-fidelity audio reproduction. The wide supply voltage range allows operation from various power sources, including wall adapters and batteries. The thermal protection prevents overheating during prolonged high-power operation. The mute function suppresses power-on transients, protecting the speakers from pops. The compact Multiwatt-15 package simplifies PCB layout, making it suitable for space-constrained designs.
Recommended
Home Theater System
The TDA2005R can be used in home theater systems for surround sound amplification. In a home theater receiver, multiple TDA2005R amplifiers can be used to drive different channels. The dual-channel configuration reduces component count for stereo pairs. The low distortion and high signal-to-noise ratio ensure clear audio reproduction for movies and music. The wide supply voltage range allows operation from standard AC adapters. The thermal protection ensures safe operation during extended listening sessions. The mute function prevents power-on transients, protecting speakers and amplifiers.
Recommended
Musical Instrument Amplifier
The TDA2005R is used in musical instrument amplifiers, such as guitar amps, to amplify the instrument signal. In a guitar amp, the TDA2005R amplifies the preamp output to drive a speaker. The class AB operation provides a warm, natural sound with low distortion. The wide supply voltage range allows operation from various power sources. The thermal protection prevents overheating during high-volume playing. The mute function can be used to suppress noise when switching effects. The compact package makes it suitable for portable practice amps.
Recommended
Public Address System
The TDA2005R is used in public address systems to amplify voice or music for announcements. In a PA system, the TDA2005R amplifies the microphone or music source to drive speakers. The dual-channel configuration allows stereo or zone-based amplification. The low distortion ensures clear voice reproduction. The wide supply voltage range allows operation from various power sources. The thermal protection ensures reliable operation during continuous use. The mute function can be used to suppress feedback or noise. The compact package simplifies installation in ceiling or wall-mounted speakers.
Recommended
Recommended Products Summary
Engineering reference data for TDA2005R β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TDA2005 | TDA2004 | TDA2006 | TDA2030 | TDA2050 | LM1875 | TDA7265 | TDA7297 |
|---|---|---|---|---|---|---|---|---|---|
| Package | Multiwatt-15 | Multiwatt-15 | Multiwatt-15 | Multiwatt-15 | Multiwatt-15 | Multiwatt-15 | Multiwatt-15 | Multiwatt-15 | Multiwatt-15 |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | Texas Instruments | STMicroelectronics | STMicroelectronics |
| Output Power per Channel | 20W (4Ξ©, 14.4V) | 20W (4Ξ©, 14.4V) | 10W (4Ξ©, 14.4V) | 12W (4Ξ©, 14.4V) | 14W (4Ξ©, 14.4V) | 32W (4Ξ©, 14.4V) | 20W (4Ξ©, 14.4V) | 25W (4Ξ©, 14.4V) | 15W (4Ξ©, 14.4V) |
| Number of Channels | 2 | 1 | 2 | 1 | 1 | 1 | 1 | 2 | 2 |
| Supply Voltage Range | 8V to 18V | 8V to 18V | 8V to 18V | 8V to 18V | 6V to 36V | 6V to 36V | 16V to 60V | 8V to 18V | 8V to 18V |
| THD at 1kHz, 10W | 0.5% | 0.5% | 0.5% | 0.5% | 0.5% | 0.5% | 0.015% | 0.5% | 0.5% |
| Operating Temperature Range | -40Β°C to +150Β°C | -40Β°C to +150Β°C | -40Β°C to +150Β°C | -40Β°C to +150Β°C | -40Β°C to +150Β°C | -40Β°C to +150Β°C | -20Β°C to +85Β°C | -40Β°C to +150Β°C | -40Β°C to +150Β°C |
| Mute Function | Yes | No | No | No | No | No | No | Yes | Yes |
Key Differentiators
- Dual-channel configuration (vs TDA2005)
- Higher output power (vs TDA2004)
- Built-in mute and standby functions (vs TDA2030)
Design Notes
The TDA2005R in the Multiwatt-15 package has a thermal resistance of 3.5Β°C/W. At 20W output per channel, the power dissipation can be significant. For example, at 14.4V supply and 4Ξ© load, the efficiency is around 60%, so each channel dissipates approximately 13W. With both channels operating, total dissipation is 26W, causing a junction temperature rise of 91Β°C above ambient. A heatsink with a thermal resistance of 2Β°C/W or better is required to keep the junction temperature below 150Β°C. Ensure the heatsink is properly attached using thermal compound and mechanical fastening.
For optimal performance, use short, wide traces for power and ground connections to minimize resistance and inductance. Place the power supply decoupling capacitors (100Β΅F electrolytic and 100nF ceramic) as close as possible to the VCC and GND pins. The input signal traces should be kept away from the output traces to avoid feedback and oscillation. Use a ground plane to provide a low-impedance return path. The Multiwatt-15 package has multiple GND pins; connect all of them to the ground plane to improve thermal and electrical performance.
Do not operate the TDA2005R without a heatsink at high output power, as this will cause thermal shutdown or permanent damage. Ensure the supply voltage does not exceed 18V, as this can damage the device. The mute and standby pins should be properly controlled to avoid unintended operation. When using the mute function, ensure the control signal is clean and free of noise to prevent audible clicks. Always use a fuse in series with the power supply to protect against short circuits.
Compliance Information
Compliance information not provided in the verified data. Please refer to the STMicroelectronics datasheet or contact the manufacturer for RoHS/REACH status.
