Overview
The TPA3001D1PWPG4, produced by Texas Instruments, is a 20-W monaural bridge-tied load (BTL) class-D audio power amplifier. This device is known for its high efficiency, which eliminates the need for heat sinks. It can drive 4-Ω or 8-Ω speakers with only a ferrite bead filter required to reduce EMI. The amplifier features a third-generation modulation technique that replaces large LC filters with small, low-cost ferrite bead filters in most applications, enhancing efficiency and signal-to-noise ratio (SNR). The TPA3001D1 is available in a 24-pin thermally enhanced TSSOP package (PWP), which is space-saving and thermally efficient.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Maximum Output Power | 20 W | Into 8-Ω load from 18-V supply (10% THD+N) |
| Supply Voltage | 3.6 to 18 | V |
| Load Impedance | ≥ 3.6 Ω | Ω |
| Operating Temperature Range | -40 to 85 | °C |
| Supply Current | 8 mA (typ) at 12 V | mA |
| Shutdown Current | < 1 µA (typ) | µA |
| Signal-to-Noise Ratio (SNR) | 95 dB | dB |
| Package Type | 24-pin TSSOP (PWP) |
Key Features
- High Efficiency: Eliminates the need for heat sinks.
- Third-Generation Modulation Technique: Replaces large LC filters with small, low-cost ferrite bead filters.
- Short-Circuit Protection: Protection against short circuits to VCC, GND, and between outputs.
- Gain Control: Gain can be configured for 12, 18, 23.6, or 36 dB using GAIN1 and GAIN0 input terminals.
- Differential Input Stage: Provides high common-mode rejection and improved power-supply rejection.
- Depop Circuitry: Reduces pop at power-up and during shutdown cycling.
- Thermally-Enhanced Packaging: Space-saving, thermally-enhanced PowerPAD™ packaging.
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°C to 85°C.
- What type of protection does the TPA3001D1 offer?
The TPA3001D1 offers short-circuit protection against shorts to VCC, GND, and between outputs.
- How is the gain of the TPA3001D1 controlled?
The gain can be controlled using two input terminals, GAIN1 and GAIN0, allowing for gains of 12, 18, 23.6, or 36 dB.
- What is the typical supply current of the TPA3001D1 at 12 V?
The typical supply current is 8 mA at 12 V.
- What is the shutdown current of the TPA3001D1?
The shutdown current is less than 1 µA.
- What type of packaging does the TPA3001D1 use?
The TPA3001D1 is available in a 24-pin thermally enhanced TSSOP package (PWP).
- Does the TPA3001D1 require an external heat sink?
No, the TPA3001D1 does not require an external heat sink due to its high efficiency and thermally-enhanced packaging.
- What is the signal-to-noise ratio (SNR) of the TPA3001D1?
The SNR is 95 dB.
- What are some common applications of the TPA3001D1?
