Overview
The TPA3111D1PWPR from Texas Instruments is a 10-W, efficient, Class-D audio power amplifier designed for driving a bridge-tied speaker. This device is notable for its high efficiency, filter-free operation, and advanced EMI suppression technology. It operates within a wide supply voltage range of 8 to 26 V, making it versatile for various applications. The TPA3111D1PWPR also features the SpeakerGuard™ speaker protection system, which includes an adjustable power limiter and DC detection circuit, ensuring robust protection and reliability.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Power | 10 W into 8 Ω at 10% THD+N from a 12-V supply | - |
| Output Power (Alternative) | 7 W into 4 Ω at 10% THD+N from an 8-V supply | - |
| Efficiency | 94% into 8 Ω load | % |
| Supply Voltage Range | 8 to 26 V | V |
| Gain Settings | Four selectable, fixed gain settings | - |
| Input Type | Differential inputs | - |
| Package Type | HTSSOP (28 pins) | - |
| Package Size | 4.40 mm × 9.70 mm | mm |
| Quiescent Supply Current | 20 mA at VCC = 12 V, no load | mA |
| Thermal Resistance (Junction-to-Ambient) | 30.3 °C/W | °C/W |
Key Features
- Filter-free operation with advanced EMI suppression technology
- SpeakerGuard™ speaker protection system with adjustable power limiter and DC detection circuit
- High efficiency (>90%) eliminating the need for an external heat sink
- Wide supply voltage range (8 to 26 V)
- Flow-through pinout for easy board layout
- Robust pin-to-pin short-circuit protection and thermal protection with auto-recovery option
- Excellent THD+N and pop-free performance
- Differential inputs and four selectable, fixed gain settings
Applications
- Televisions
- Monitors and laptops
- Consumer audio equipment
Q & A
- What is the maximum output power of the TPA3111D1PWPR? The maximum output power is 10 W into an 8 Ω load at 10% THD+N from a 12-V supply.
- What is the efficiency of the TPA3111D1PWPR? The efficiency is 94% into an 8 Ω load.
- What is the supply voltage range for the TPA3111D1PWPR? The supply voltage range is from 8 to 26 V.
- Does the TPA3111D1PWPR require an external heat sink? No, due to its high efficiency (>90%), it does not require an external heat sink.
- What type of speaker protection does the TPA3111D1PWPR offer? It offers the SpeakerGuard™ speaker protection system with an adjustable power limiter and DC detection circuit.
- What are the gain settings available on the TPA3111D1PWPR? There are four selectable, fixed gain settings.
- What type of inputs does the TPA3111D1PWPR have? It has differential inputs.
- What is the package type and size of the TPA3111D1PWPR? It is packaged in an HTSSOP (28 pins) with dimensions of 4.40 mm × 9.70 mm.
- What are some common applications for the TPA3111D1PWPR? Common applications include televisions, monitors and laptops, and consumer audio equipment.
- Does the TPA3111D1PWPR have thermal protection? Yes, it has robust thermal protection with an auto-recovery option.
