Overview
The TPA152DRG4 is a 75-mW stereo audio power amplifier produced by Texas Instruments. This device is designed to deliver high-fidelity audio output with minimal distortion. It is capable of producing less than 0.1% Total Harmonic Distortion plus Noise (THD+N) at 1 kHz when delivering 75 mW per channel into a 32-Ω load. The TPA152DRG4 is ideal for use in PC systems as an output buffer for audio CODECs and in applications requiring high-performance headphone or line-out amplifiers.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage, VDD | 4.5 | 5.5 | V | |
| Operating Free-Air Temperature, TA | –40 | 85 | °C | |
| Output Power (each channel), THD ≤ 0.03%, Gain = 1 | 75 | mW | ||
| THD+N, PO = 75 mW, 20 Hz–20 kHz, Gain = 1 | 0.2% | % | ||
| Supply Current, IDD | 5.5 | 14 | mA | |
| Input Impedance, ZI | >1 | MΩ | ||
| Mute Attenuation | 110 | dB | ||
| Signal-to-Noise Ratio | dB | |||
| Package Type | 8-SOIC |
Key Features
- High-fidelity line-out/headphone driver with less than 0.1% THD+N at 1 kHz and 75 mW per channel into a 32-Ω load.
- PC power supply compatible and internal mid-rail generation.
- Pop reduction circuitry to minimize transients during power up, power down, and mute mode.
- Thermal and short-circuit protection for enhanced reliability.
- Surface-mount packaging in an 8-pin SOIC (D) package, reducing board space and facilitating automated assembly.
- Externally configurable gain using two resistors per input channel, without requiring external compensation for settings of 1 to 10.
- Adequate power supply decoupling to ensure low THD and prevent oscillations.
Applications
- Output buffer for audio CODECs in PC systems.
- High-performance headphone or line-out amplifiers.
- Audio systems requiring low distortion and high fidelity.
Q & A
- What is the typical output power of the TPA152DRG4?
The TPA152DRG4 can deliver up to 75 mW per channel into a 32-Ω load with less than 0.1% THD+N at 1 kHz).
- What is the operating temperature range of the TPA152DRG4?
The operating free-air temperature range is from –40°C to 85°C).
- How is the gain of the TPA152DRG4 configured?
The gain is externally configured using two resistors per input channel, without requiring external compensation for settings of 1 to 10).
- What kind of protection does the TPA152DRG4 have?
The device features thermal and short-circuit protection).
- What is the package type of the TPA152DRG4?
The TPA152DRG4 is packaged in an 8-pin SOIC (D) package).
- How does the TPA152DRG4 reduce pop noise?
The device includes pop reduction circuitry to minimize transients during power up, power down, and mute mode).
- What is the recommended power supply decoupling for the TPA152DRG4?
Adequate power supply decoupling is recommended using a low ESR ceramic capacitor and a larger aluminum electrolytic capacitor to ensure low THD and prevent oscillations).
- What is the input impedance of the TPA152DRG4?
The input impedance is greater than 1 MΩ).
- What is the mute attenuation of the TPA152DRG4?
The mute attenuation is up to 110 dB).
- Is the TPA152DRG4 still available for purchase?
The TPA152DRG4 is discontinued and no longer carried by some distributors like DigiKey, but substitutes may be available).
