Overview
The TAS5352A, produced by Texas Instruments, is a high-performance, integrated stereo digital amplifier power stage. This device is designed to drive a 4-Ω bridge-tied load (BTL) at up to 125 W per channel with low harmonic distortion, low integrated noise, and low idle current. It features a comprehensive protection system, including undervoltage protection, overtemperature protection, overload protection, short-circuit protection, and a PWM activity detector. The TAS5352A also includes a power-on-reset (POR) circuit to eliminate the need for power-supply sequencing, enhancing system reliability and performance.
Key Specifications
| Parameter | Test Conditions | Unit | Min | Max | |
|---|---|---|---|---|---|
| Maximum Power Output (BTL) | RL = 4 Ω, 10% THD+N, clipped input signal | W | 125 | ||
| RL = 6 Ω, 10% THD+N, clipped input signal | W | 100 | |||
| RL = 8 Ω, 10% THD+N, clipped input signal | W | 76 | |||
| Maximum Power Output (Single-Ended) | RL = 3 Ω, 10% THD+N, clipped input signal | W | 45 | ||
| RL = 4 Ω, 10% THD+N, clipped input signal | W | 35 | |||
| Total Harmonic Distortion + Noise (THD+N) | 0 dBFS, AES17 filter | % | 0.2 | 0.4 | |
| 1 W, AES17 filter | % | 0.09 | |||
| Signal-to-Noise Ratio (SNR) | A-weighted, AES17 filter, Auto mute disabled | dB | 110 | ||
| Output Integrated Noise | A-weighted, AES17 filter, Auto mute disabled | μV | 50 | ||
| Operating Junction Temperature | °C | 0 | 125 | ||
| Package Type | HTSSOP (44-pin) |
Key Features
- High-efficiency power stage with >90% efficiency and 80-mΩ output MOSFETs
- Integrated self-protection circuitry including undervoltage protection, overtemperature warning and error, overload protection, short-circuit protection, and PWM activity detector
- Stand-alone protection recovery and power-on-reset (POR) to eliminate system power-supply sequencing
- Resistor-programmable current limit and error reporting compliant with 3.3-V and 5-V systems
- Supports PWM frame rates from 192 kHz to 432 kHz
- Thermally enhanced 44-pin HTSSOP package
- EMI compliant when used with recommended system design
Applications
- Mini and micro audio systems
- DVD receivers
- Home theaters
Q & A
- What is the maximum power output of the TAS5352A in BTL configuration?
The TAS5352A can deliver up to 125 W per channel into a 4-Ω load at 10% THD+N in BTL configuration.
- What are the key protection features of the TAS5352A?
The device includes undervoltage protection, overtemperature protection, overload protection, short-circuit protection, and a PWM activity detector.
- What is the signal-to-noise ratio (SNR) of the TAS5352A?
The SNR is greater than 110 dB, A-weighted with AES17 filter and auto mute disabled.
- What is the operating junction temperature range of the TAS5352A?
The operating junction temperature range is from 0°C to 125°C.
- What package type is the TAS5352A available in?
The TAS5352A is available in a 44-pin HTSSOP package.
- Does the TAS5352A support multiple PWM frame rates?
Yes, it supports PWM frame rates from 192 kHz to 432 kHz.
- What are some typical applications of the TAS5352A?
Typical applications include mini and micro audio systems, DVD receivers, and home theaters.
- How does the TAS5352A handle power-on-reset (POR)?
The device includes a power-on-reset (POR) circuit to eliminate the need for power-supply sequencing, ensuring smooth system startup.
- Is the TAS5352A EMI compliant?
Yes, the TAS5352A is EMI compliant when used with recommended system design.
- What is the efficiency of the TAS5352A power stage?
The power stage of the TAS5352A has an efficiency of greater than 90%.
