Overview
The TPA3123D2 is a high-performance, 25W stereo Class-D audio power amplifier produced by Texas Instruments. This amplifier is designed to drive stereo speakers in a single-ended configuration or a mono speaker in a bridge-tied-load (BTL) configuration. It operates efficiently from a supply voltage range of 10V to 30V, eliminating the need for external heat sinks during typical music playback. The TPA3123D2 features advanced power-off pop reduction, thermal and short-circuit protection with auto recovery, and a space-saving 24-pin TSSOP package.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 10 | - | 30 | V |
| Output Power (per channel, SE) | - | - | 25 | W |
| Output Power (BTL) | - | - | 50 | W |
| Load Resistance | 4 | - | 8 | Ω |
| Gain Settings | 20, 26, 32, 36 | - | - | dB |
| Operating Temperature | -40 | - | 85 | °C |
| Junction-to-Ambient Thermal Resistance (qJA) | - | - | 30.2 | °C/W |
| Package Type | - | - | 24-Pin TSSOP | - |
Key Features
- Efficient Class-D operation eliminates the need for external heat sinks.
- Four selectable, fixed-gain settings (20, 26, 32, 36 dB) controlled by GAIN0 and GAIN1 pins.
- Internal oscillator with no external components required.
- Single-ended analog inputs.
- Thermal and short-circuit protection with auto recovery.
- Advanced power-off pop reduction to minimize pop noise in speakers.
- Space-saving 24-pin TSSOP package.
- Pin-to-pin compatible with TPA3120D2.
Applications
The TPA3123D2 is suitable for a variety of audio applications, including home audio systems, portable audio devices, automotive audio systems, and professional audio equipment. Its efficiency and compact design make it ideal for systems where space and heat dissipation are critical.
Q & A
- What is the operating voltage range of the TPA3123D2? The TPA3123D2 operates from 10V to 30V.
- What are the gain settings available for the TPA3123D2? The gain settings are 20, 26, 32, and 36 dB.
- What is the maximum output power per channel in single-ended configuration? The maximum output power per channel in single-ended configuration is 25W.
- What is the maximum output power in bridge-tied-load (BTL) configuration? The maximum output power in BTL configuration is 50W.
- What type of protection does the TPA3123D2 have? The TPA3123D2 has thermal and short-circuit protection with auto recovery.
- What package type is the TPA3123D2 available in? The TPA3123D2 is available in a 24-pin TSSOP package.
- Does the TPA3123D2 require external heat sinks? No, the TPA3123D2 does not require external heat sinks due to its efficient Class-D operation.
- How is the gain of the TPA3123D2 controlled? The gain is controlled by two input terminals, GAIN0 and GAIN1.
- What is the purpose of the internal oscillator in the TPA3123D2? The internal oscillator eliminates the need for external components.
- What is the operating temperature range of the TPA3123D2? The operating temperature range is from -40°C to 85°C.
