Overview
The TPA301DGNR is a 350-mW, mono, Class-AB audio power amplifier developed by Texas Instruments. This device is specifically designed for low-voltage applications where internal speakers are required, such as in cellular communications and other battery-powered equipment. The TPA301 operates with a wide power supply compatibility range of 2.5 V to 5.5 V and is fully specified for 3.3-V and 5-V operation. It features a bridge-tied load (BTL) configuration, which eliminates the need for external coupling capacitors on the output in most applications, making it particularly suitable for small, space-constrained devices.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Package | HVSSOP (DGN) | 8 pins |
| Operating Temperature Range | °C | -40 to 85 |
| Power Supply Range | V | 2.5 to 5.5 |
| Output Power (RL = 8 Ω) | mW | 350 mW at VDD = 5 V, BTL 250 mW at VDD = 3.3 V, BTL |
| Quiescent Current in Shutdown Mode | µA | 0.15 |
| Supply Current (SHUTDOWN = 0 V) | mA | 0.7 to 1.5 |
| Power Supply Rejection Ratio (PSRR) | dB | 85 |
| Thermal and Short-Circuit Protection | Yes |
Key Features
- Fully specified for 3.3-V and 5-V operation.
- Wide power supply compatibility range of 2.5 V to 5.5 V.
- Output power: 350 mW at VDD = 5 V, BTL and 250 mW at VDD = 3.3 V, BTL.
- Ultra-low quiescent current in shutdown mode: 0.15 µA.
- Thermal and short-circuit protection.
- Surface-mount packaging: SOIC and PowerPAD MSOP, reducing board space by 50% and height by 40%.
- BTL configuration eliminates the need for external coupling capacitors on the output in most applications.
Applications
The TPA301DGNR is ideal for low-voltage applications requiring internal speakers, such as:
- Cellular communications devices.
- Portable audio equipment.
- Battery-powered devices where power efficiency and compact design are crucial.
- Other applications requiring high audio quality in a small form factor.
Q & A
- What is the TPA301DGNR?
The TPA301DGNR is a 350-mW, mono, Class-AB audio power amplifier developed by Texas Instruments.
- What is the operating temperature range of the TPA301DGNR?
The operating temperature range is -40°C to 85°C.
- What is the power supply range for the TPA301DGNR?
The power supply range is 2.5 V to 5.5 V.
- What is the output power of the TPA301DGNR at different supply voltages?
The output power is 350 mW at VDD = 5 V, BTL and 250 mW at VDD = 3.3 V, BTL.
- What is the quiescent current in shutdown mode?
The quiescent current in shutdown mode is 0.15 µA.
- Does the TPA301DGNR have thermal and short-circuit protection?
- What types of packaging are available for the TPA301DGNR?
The TPA301DGNR is available in SOIC and PowerPAD MSOP packages.
- What are the benefits of the BTL configuration in the TPA301DGNR?
The BTL configuration eliminates the need for external coupling capacitors on the output in most applications.
- What are some typical applications for the TPA301DGNR?
Typical applications include cellular communications devices, portable audio equipment, and other battery-powered devices requiring high audio quality in a small form factor.
- How does the PowerPAD MSOP package benefit the design?
The PowerPAD MSOP package reduces board space by 50% and height by 40% compared to traditional packages.
