TAS2557YZR

Product Overview

• Category: Audio Amplifier
• Use: The TAS2557YZR is a digital input, closed-loop Class-D audio amplifier that is designed to drive speakers in portable applications such as smartphones, tablets, and portable gaming devices.
• Characteristics:
  • High efficiency
  • Low power consumption
  • Compact size
  • Integrated protection features
• Package: The TAS2557YZR comes in a small outline package (DSBGA) with dimensions of 1.63 mm × 1.63 mm.
• Essence: The TAS2557YZR is an essential component for delivering high-quality audio output in portable electronic devices.
• Packaging/Quantity: The TAS2557YZR is typically sold in reels containing 3000 units.

Specifications

• Power Supply Voltage Range: 2.5 V to 5.5 V
• Output Power: Up to 4 W per channel
• Total Harmonic Distortion + Noise (THD+N): <0.1%
• Signal-to-Noise Ratio (SNR): >100 dB
• Digital Audio Interface: I2S, TDM, or PDM
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The TAS2557YZR has the following pin configuration:

1. VDD: Power supply voltage
2. GND: Ground
3. SDZ: Shutdown control input
4. SDA: I2C serial data input
5. SCL: I2C serial clock input
6. LRCLK: Left/right channel clock input
7. BCLK: Bit clock input
8. DOUT: Serial audio data output
9. DIN: Serial audio data input
10. PVDD: Power supply voltage for the output stage

Functional Features

• Closed-loop architecture for improved audio performance
• Integrated digital-to-analog converter (DAC)
• Programmable gain control
• Automatic gain control (AGC)
• Dynamic range compression (DRC)
• Speaker protection features (overcurrent, overtemperature, undervoltage)
• Pop and click suppression during power-up and shutdown

Advantages and Disadvantages

Advantages: - High efficiency resulting in longer battery life - Compact size allows for integration into small devices - Integrated protection features ensure speaker safety - Excellent audio quality with low distortion and high signal-to-noise ratio

Disadvantages: - Limited output power compared to larger amplifiers - Requires external components for full functionality - Sensitive to electromagnetic interference (EMI)

Working Principles

The TAS2557YZR operates on the principle of Class-D amplification. It converts the digital audio input into a pulse-width modulated (PWM) signal that drives the speakers. The closed-loop architecture ensures accurate reproduction of the input audio signal while minimizing distortion and noise.

Detailed Application Field Plans

The TAS2557YZR is widely used in various portable electronic devices where space and power efficiency are crucial. Some application fields include:

1. Smartphones
2. Tablets
3. Portable gaming devices
4. Bluetooth speakers
5. Wearable devices

Detailed and Complete Alternative Models

1. TAS2560: Similar to TAS2557YZR but with higher output power capability.
2. TAS2770: Class-D audio amplifier with integrated DSP for advanced audio processing.
3. TPA3116D2: Class-D audio amplifier with higher output power and wider supply voltage range.

These alternative models offer different features and specifications to cater to specific application requirements.

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