Overview
The TPA3001D1, produced by Texas Instruments, is a 20-W monaural bridge-tied load (BTL) class-D audio power amplifier. This high-efficiency amplifier eliminates the need for heat sinks and is designed to drive 4-Ω or 8-Ω speakers with only a ferrite bead filter required to reduce EMI. The amplifier features a differential input stage that provides high common-mode rejection and improved power-supply rejection. It is available in a 24-pin thermally enhanced TSSOP package (PWP), which enhances thermal performance without the need for an external heat sink.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Maximum Output Power | 20 W | - |
| Supply Voltage Range | 8 to 18 V | V |
| Load Impedance | 3.6 Ω to 8 Ω | Ω |
| Operating Temperature Range | -40 to 85 °C | °C |
| Package Type | HTSSOP (PWP) | - |
| Number of Pins | 24 | - |
| Typical Supply Current | 8 mA at 12 V | mA |
| Shutdown Current | < 1 µA | µA |
| Signal-to-Noise Ratio (SNR) | 95 dB | dB |
Key Features
- 20 W into 8-Ω load from 18-V supply (10% THD+N)
- Short-circuit protection (short to VCC, short to GND, short between outputs)
- Third-generation modulation technique: replaces large LC filter with small, low-cost ferrite bead filter in most applications
- Improved efficiency and signal-to-noise ratio (SNR)
- Low supply current: 8 mA typical at 12 V
- Shutdown control: < 1 µA typical
- Space-saving, thermally-enhanced PowerPAD™ packaging
- Depop circuitry to reduce pop at power-up and when cycling SHUTDOWN
- Configurable gain: 12, 18, 23.6, or 36 dB via GAIN1 and GAIN0 input terminals
Applications
- LCD Monitors/TVs
- Hands-Free Car Kits
- Powered Speakers
Q & A
- What is the maximum output power of the TPA3001D1?
The TPA3001D1 can deliver up to 20 W into an 8-Ω load from an 18-V supply with 10% THD+N.
- What is the operating temperature range of the TPA3001D1?
The operating temperature range is -40 to 85 °C.
- What type of package does the TPA3001D1 come in?
The TPA3001D1 is available in a 24-pin thermally enhanced TSSOP package (PWP).
- What is the typical supply current of the TPA3001D1 at 12 V?
The typical supply current is 8 mA at 12 V.
- Does the TPA3001D1 have short-circuit protection?
- What modulation technique does the TPA3001D1 use?
The TPA3001D1 uses a third-generation modulation technique that replaces large LC filters with small, low-cost ferrite bead filters.
- How can the gain of the TPA3001D1 be configured?
The gain can be configured to 12, 18, 23.6, or 36 dB using the GAIN1 and GAIN0 input terminals.
- What is the shutdown current of the TPA3001D1?
The shutdown current is less than 1 µA.
- What are some common applications of the TPA3001D1?
Common applications include LCD monitors/TVs, hands-free car kits, and powered speakers.
- Does the TPA3001D1 include depop circuitry?
