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TDA7377A Stereo Audio Amplifier IC ZIP-15 – High-Performance Car & DIY Audio
TDA7377A Stereo Audio Amplifier IC ZIP-15 – High-Performance Car & DIY Audio
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TDA7377A Stereo Audio Amplifier IC - ZIP-15 Package
The TDA7377A is a high-performance stereo audio power amplifier IC from STMicroelectronics in a ZIP-15 (Multiwatt15) package. Delivering 2x30W in stereo bridge mode or 4x10W in quad mode from a 14.4V supply, it is the standard IC for car audio head units, home audio amplifiers, and DIY speaker amplifier projects.
Key Specifications
| Parameter | Value |
|---|---|
| Part Number | TDA7377A |
| Package | ZIP-15 (Multiwatt15) |
| Supply Voltage | 8V - 18V DC |
| Output Power (Stereo Bridge) | 2x30W @ 14.4V, 4 ohm, 10% THD |
| Output Power (Quad) | 4x10W @ 14.4V, 4 ohm, 10% THD |
| Output Power (Music Power) | 2x22W @ 14.4V, 4 ohm, 1% THD |
| Frequency Response | 20Hz - 20kHz |
| THD (at 1W) | 0.05% typical |
| Signal-to-Noise Ratio | 100dB typical |
| Standby Mode | Yes (ST-BY pin, active-low) |
| Mute Function | Yes (MUTE pin) |
| Protection | Thermal shutdown, short-circuit, load dump |
Operating Modes
| Mode | Channels | Power per Channel | Load |
|---|---|---|---|
| Stereo Bridge (BTL) | 2 | 30W | 4 ohm |
| Quad (SE) | 4 | 10W | 4 ohm |
Why Choose TDA7377A?
- High Output Power - 2x30W bridge mode for powerful stereo audio from a single IC
- Low THD - 0.05% at 1W for clean, high-fidelity audio reproduction
- Standby and Mute - Built-in ST-BY and MUTE pins for power management and click-pop suppression
- Comprehensive Protection - Thermal shutdown, short-circuit, and load dump protection
- Minimal External Components - Requires only bypass capacitors and gain resistors
Typical Applications
- Car audio head unit amplifier stage
- DIY stereo speaker amplifier (2x30W)
- Home audio active speaker amplifier
- 4-channel surround sound amplifier
- Multimedia speaker system amplifier
- Subwoofer amplifier (bridge mode)
Typical Application Circuit
Supply: 12V-14.4V DC. Input: AC-coupled via 1uF capacitor. Gain set by external resistors (typical gain: 26dB). Bypass capacitors: 100uF on VS pin, 100nF on each supply bypass point. Heatsink required for sustained high-power operation.
FAQ
Q: Can TDA7377A drive 8 ohm speakers? Yes - output power reduces to approximately 2x15W at 8 ohm in bridge mode. THD improves at lower power levels.
Q: Does TDA7377A need a heatsink? Yes - at full power, thermal dissipation can reach 20W+. Use a heatsink with thermal resistance of 3C/W or lower for continuous operation.
Package Contents
- 1x TDA7377A ZIP-15 Stereo Audio Amplifier IC
- ★Product Description
- ★About us
- ★Custom cable
TDA7377A Stereo Audio Amplifier IC - ZIP-15 Package
The TDA7377A is a high-performance stereo audio power amplifier IC from STMicroelectronics in a ZIP-15 (Multiwatt15) package. Delivering 2x30W in stereo bridge mode or 4x10W in quad mode from a 14.4V supply, it is the standard IC for car audio head units, home audio amplifiers, and DIY speaker amplifier projects.
Key Specifications
| Parameter | Value |
|---|---|
| Part Number | TDA7377A |
| Package | ZIP-15 (Multiwatt15) |
| Supply Voltage | 8V - 18V DC |
| Output Power (Stereo Bridge) | 2x30W @ 14.4V, 4 ohm, 10% THD |
| Output Power (Quad) | 4x10W @ 14.4V, 4 ohm, 10% THD |
| Output Power (Music Power) | 2x22W @ 14.4V, 4 ohm, 1% THD |
| Frequency Response | 20Hz - 20kHz |
| THD (at 1W) | 0.05% typical |
| Signal-to-Noise Ratio | 100dB typical |
| Standby Mode | Yes (ST-BY pin, active-low) |
| Mute Function | Yes (MUTE pin) |
| Protection | Thermal shutdown, short-circuit, load dump |
Operating Modes
| Mode | Channels | Power per Channel | Load |
|---|---|---|---|
| Stereo Bridge (BTL) | 2 | 30W | 4 ohm |
| Quad (SE) | 4 | 10W | 4 ohm |
Why Choose TDA7377A?
- High Output Power - 2x30W bridge mode for powerful stereo audio from a single IC
- Low THD - 0.05% at 1W for clean, high-fidelity audio reproduction
- Standby and Mute - Built-in ST-BY and MUTE pins for power management and click-pop suppression
- Comprehensive Protection - Thermal shutdown, short-circuit, and load dump protection
- Minimal External Components - Requires only bypass capacitors and gain resistors
Typical Applications
- Car audio head unit amplifier stage
- DIY stereo speaker amplifier (2x30W)
- Home audio active speaker amplifier
- 4-channel surround sound amplifier
- Multimedia speaker system amplifier
- Subwoofer amplifier (bridge mode)
Typical Application Circuit
Supply: 12V-14.4V DC. Input: AC-coupled via 1uF capacitor. Gain set by external resistors (typical gain: 26dB). Bypass capacitors: 100uF on VS pin, 100nF on each supply bypass point. Heatsink required for sustained high-power operation.
FAQ
Q: Can TDA7377A drive 8 ohm speakers? Yes - output power reduces to approximately 2x15W at 8 ohm in bridge mode. THD improves at lower power levels.
Q: Does TDA7377A need a heatsink? Yes - at full power, thermal dissipation can reach 20W+. Use a heatsink with thermal resistance of 3C/W or lower for continuous operation.
Package Contents
- 1x TDA7377A ZIP-15 Stereo Audio Amplifier IC
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