Overview
The TAS5261DKDRG4, produced by Texas Instruments, is a high-performance, integrated mono digital amplifier power stage. This device is designed to drive 4-Ω to 8-Ω speakers with low harmonic distortion. It features complete protection circuitry, including short-circuit protection, overcurrent protection, undervoltage protection, and overtemperature warning and error protection. The TAS5261 requires only a simple, passive demodulation filter to deliver high-quality, high-efficiency audio amplification.
Key Specifications
| Parameter | Condition | Min | Max | Unit | |
|---|---|---|---|---|---|
| Output Power (RL = 8 Ω, f = 1 kHz, THD = 0.09%) | 125 | W | |||
| Output Power (RL = 6 Ω, f = 1 kHz, THD = 10%) | 220 | W | |||
| Output Power (RL = 4 Ω, f = 1 kHz, THD = 10%) | 315 | W | |||
| PVDD_x Supply Voltage | 0 | 50 | 52.5 | V | |
| GVDD_x Gate-Drive Power Supply | 10.8 | 12 | 13.2 | V | |
| VDD Digital Regulator Supply Voltage | 10.8 | 12 | 13.2 | V | |
| Resistive Load Impedance (BTL) | 4 | 16 | Ω | ||
| PWM Frame Rate | 192 | 384 | kHz | ||
| Minimum Output Filter Inductance | 5 | 10 | µH | ||
| Signal-to-Noise Ratio (SNR) A-Weighted | 110 | dB |
Key Features
- Complete protection circuitry including short-circuit protection, overcurrent protection, undervoltage protection, and overtemperature warning and error protection.
- Power-on reset (POR) circuit to eliminate power-supply sequencing.
- Supports Pulse-Width Modulation (PWM) frame rates of 192 kHz to 384 kHz.
- Resistor-programmable current limit.
- PWM Activity Detector to monitor individual PWM inputs.
- Thermally-enhanced package (36-pin PSOP3).
- EMI compliant when used with recommended system design.
- Error reporting 3.3-V and 5-V compliant.
Applications
- AV Receivers
- DVD Receivers
- Mini/Micro Component Systems
- Home Theater Systems
Q & A
- What is the maximum output power of the TAS5261 into an 8-Ω load at 0.09% THD+N?
The maximum output power is 125 W into an 8-Ω load at 0.09% THD+N.
- What are the key protection features of the TAS5261?
The key protection features include short-circuit protection, overcurrent protection, undervoltage protection, and overtemperature warning and error protection.
- What is the PWM frame rate supported by the TAS5261?
The TAS5261 supports PWM frame rates of 192 kHz to 384 kHz.
- What is the purpose of the Power-On Reset (POR) circuit in the TAS5261?
The POR circuit eliminates the need for power-supply sequencing and ensures all circuits are fully operational when the GVDD_x and VDD supply voltages reach the UVP level.
- How does the PWM Activity Detector work in the TAS5261?
The PWM Activity Detector monitors individual PWM inputs. If one or more inputs are stuck in either a high state or a low state for more than a defined length of time, the entire device is shut down.
- What is the recommended load impedance for the TAS5261?
The recommended resistive load impedance is 4-16 Ω for bridge-tied load (BTL) configurations.
- What is the signal-to-noise ratio (SNR) of the TAS5261?
The SNR is 110 dB A-Weighted when used with the TAS5518 modulation input signal.
- What package type is the TAS5261 available in?
The TAS5261 is available in a 36-pin PSOP3 thermally-enhanced package.
- Is the TAS5261 EMI compliant?
Yes, the TAS5261 is EMI compliant when used with the recommended system design.
- What are the typical applications of the TAS5261?
The TAS5261 is typically used in AV Receivers, DVD Receivers, Mini/Micro Component Systems, and Home Theater Systems.
