Overview
The TAS5261DKDR, 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 detection. The TAS5261DKDR supports Pulse-Width Modulation (PWM) frame rates of 192 kHz to 384 kHz and includes a power-on reset (POR) circuit to eliminate power-supply sequencing issues. The device is packaged in a thermally-enhanced 36-pin PSOP3 package and is EMI compliant when used with recommended system design.
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 | ||
| Maximum Operating Junction Temperature | 0 | 150 | °C |
Key Features
- Complete protection circuitry including short-circuit protection, overcurrent protection, undervoltage protection, and overtemperature warning and error detection.
- Supports Pulse-Width Modulation (PWM) frame rates of 192 kHz to 384 kHz.
- Power-on reset (POR) circuit to eliminate power-supply sequencing issues.
- Resistor-programmable current limit.
- Integrated self-protection circuit.
- Thermally-enhanced package (36-pin PSOP3).
- EMI compliant when used with recommended system design.
- Error reporting 3.3-V and 5-V compliant.
- PWM Activity Detector to monitor individual PWM inputs.
- 110-dB SNR (A-Weighted) with TAS5518 modulation input signal.
Applications
- AV Receivers
- DVD Receivers
- Mini/Micro Component Systems
- Home Theater Systems
Q & A
- What is the maximum output power of the TAS5261DKDR into an 8-Ω load?
The maximum output power into an 8-Ω load is 125 W at less than 0.09% THD+N.
- What are the supported PWM frame rates for the TAS5261DKDR?
The device supports PWM frame rates of 192 kHz to 384 kHz.
- What types of protection does the TAS5261DKDR offer?
The device includes short-circuit protection, overcurrent protection, undervoltage protection, and overtemperature warning and error detection.
- What is the purpose of the Power-On Reset (POR) circuit in the TAS5261DKDR?
The POR circuit eliminates the need for power-supply sequencing, ensuring all circuits are fully operational when the GVDD_x and VDD supply voltages reach the specified levels.
- How does the TAS5261DKDR handle thermal protection?
The device has a two-level temperature-protection system that asserts an active-low warning signal (OTW) when the junction temperature exceeds the OTW level, and it shuts down if the temperature exceeds the OTE level.
- What is the recommended modulation index for the TAS5261DKDR?
The recommended modulation index is 96.1% when driving the TAS5261.
- What is the significance of the PWM Activity Detector in the TAS5261DKDR?
The PWM Activity Detector monitors individual PWM inputs and shuts down the device if any input is stuck in either a high or low state for more than a defined length of time.
- How does the TAS5261DKDR ensure EMI compliance?
The device is EMI compliant when used with the recommended system design.
- What is the package type of the TAS5261DKDR?
The device is packaged in a thermally-enhanced 36-pin PSOP3 package.
- What are some common applications for the TAS5261DKDR?
Common applications include AV Receivers, DVD Receivers, Mini/Micro Component Systems, and Home Theater Systems.
