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TAS2553

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Intelligenter 2,8-W-Verstärker mit Digital/Analog-Eingang und I/V-Erfassung zum Schutz der Lautsprec

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Datenblatt

TAS2553

AKTIV
Datenblatt Jetzt bestellen

Produktdetails

Audio input type Analog Input, Digital Input Architecture Class-D Boosted Speaker channels (max) Mono Rating Catalog Power stage supply (max) (V) 7.5 Power stage supply (min) (V) 2.7 Load (min) (Ω) 6 Output power (W) 2.8 SNR (dB) 94 THD + N at 1 kHz (%) 0.9 Iq (typ) (mA) 7.1 Control interface I2C Closed/open loop Closed Analog supply (min) (V) 2.7 Analog supply voltage (max) (V) 5.5 Sampling rate (max) (kHz) 192 PSRR (dB) 75 Operating temperature range (°C) -40 to 85
Audio input type Analog Input, Digital Input Architecture Class-D Boosted Speaker channels (max) Mono Rating Catalog Power stage supply (max) (V) 7.5 Power stage supply (min) (V) 2.7 Load (min) (Ω) 6 Output power (W) 2.8 SNR (dB) 94 THD + N at 1 kHz (%) 0.9 Iq (typ) (mA) 7.1 Control interface I2C Closed/open loop Closed Analog supply (min) (V) 2.7 Analog supply voltage (max) (V) 5.5 Sampling rate (max) (kHz) 192 PSRR (dB) 75 Operating temperature range (°C) -40 to 85
DSBGA (YFF) 30 5.71999999999999912 mm² 2.2 x 2.5999999999999996
  • Analog or Digital Input Mono Boosted Class-D Amplifier
  • 2.8 W into 8 Ω Load from 3.6 V Supply (1% THD+N)
  • Efficiency of 86% at Rated Power
  • I2S, Left-Justified, Right-Justified, DSP, PDM, and TDM
    Input and Output Interface
  • Input Sample Rates from 8 kHz to 192 kHz
  • High Efficiency Class-G Boost Converter
    • Automatically Adjusts Class-D Supply
  • Built-In Speaker Sense
    • Measures Speaker Current and Voltage
    • Measures VBAT and VBOOST Voltages
  • Built-In Automatic Gain Control (AGC)
    • Limits Battery Current Consumption
  • Adjustable Class-D Switching Edge-Rate Control
  • Power Supplies
    • Boost Input: 3.0 V to 5.5 V
    • Analog: 1.65 V to 1.95 V
    • Digital I/O: 1.5 V to 3.6 V
  • Thermal and Short-Circuit Protection
  • I2C Interface for Register Control
  • Stereo Configuration Using Two TAS2553s
    • I2C Address Select Terminal (ADDR)
  • 2.855 mm × 2.575 mm, 0.4 mm Pitch 30-Ball WCSP
  • Analog or Digital Input Mono Boosted Class-D Amplifier
  • 2.8 W into 8 Ω Load from 3.6 V Supply (1% THD+N)
  • Efficiency of 86% at Rated Power
  • I2S, Left-Justified, Right-Justified, DSP, PDM, and TDM
    Input and Output Interface
  • Input Sample Rates from 8 kHz to 192 kHz
  • High Efficiency Class-G Boost Converter
    • Automatically Adjusts Class-D Supply
  • Built-In Speaker Sense
    • Measures Speaker Current and Voltage
    • Measures VBAT and VBOOST Voltages
  • Built-In Automatic Gain Control (AGC)
    • Limits Battery Current Consumption
  • Adjustable Class-D Switching Edge-Rate Control
  • Power Supplies
    • Boost Input: 3.0 V to 5.5 V
    • Analog: 1.65 V to 1.95 V
    • Digital I/O: 1.5 V to 3.6 V
  • Thermal and Short-Circuit Protection
  • I2C Interface for Register Control
  • Stereo Configuration Using Two TAS2553s
    • I2C Address Select Terminal (ADDR)
  • 2.855 mm × 2.575 mm, 0.4 mm Pitch 30-Ball WCSP

The TAS2553 is a high efficiency Class-D audio power amplifier with advanced battery current management and an integrated Class-G boost converter. The device constantly measures the current and voltage across the load and provides a digital stream of this information.

The Class-G boost converter generates the Class-D amplifier supply rail. During low Class-D output power, the boost improves efficiency by deactivating and connecting VBAT directly to the Class-D amplifier supply. When high power audio is required, the boost quickly activates to provide significantly louder audio than a stand-alone amplifier connected directly to the battery.

The AGC automatically adjusts Class-D gain to reduce battery current at end-of-charge voltages, preventing output clipping, distortion and early system shutdown. The fixed gain is adjustable via I2C. The gain range is –7 dB to +24 dB in 1 dB steps.

In addition to a differential mono analog input, the TAS2553 has built-in a 16-bit D/A converter used with a digital input. Moving the D/A converter from the digital host processor into the integrated amplifier process provides better dynamic performance at lower system cost. Additionally, since the PCB routing is digital rather than analog, sensitivity to external perturbations such as GSM frame-rate noise is decreased at the system level.

The TAS2553 is a high efficiency Class-D audio power amplifier with advanced battery current management and an integrated Class-G boost converter. The device constantly measures the current and voltage across the load and provides a digital stream of this information.

The Class-G boost converter generates the Class-D amplifier supply rail. During low Class-D output power, the boost improves efficiency by deactivating and connecting VBAT directly to the Class-D amplifier supply. When high power audio is required, the boost quickly activates to provide significantly louder audio than a stand-alone amplifier connected directly to the battery.

The AGC automatically adjusts Class-D gain to reduce battery current at end-of-charge voltages, preventing output clipping, distortion and early system shutdown. The fixed gain is adjustable via I2C. The gain range is –7 dB to +24 dB in 1 dB steps.

In addition to a differential mono analog input, the TAS2553 has built-in a 16-bit D/A converter used with a digital input. Moving the D/A converter from the digital host processor into the integrated amplifier process provides better dynamic performance at lower system cost. Additionally, since the PCB routing is digital rather than analog, sensitivity to external perturbations such as GSM frame-rate noise is decreased at the system level.
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Technische Dokumentation

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Typ Titel Datum
* Data sheet TAS2553 2.8-W Class-D Mono Audio Amplifier with Class-G Boost and Speaker Sense datasheet (Rev. B) PDF | HTML 26 Feb 2014
Application note Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) 26 Aug 2019
Application note AN-1849 An Audio Amplifier Power Supply Design (Rev. C) 27 Jun 2019
Application note PLL and Clocking Configuration for Audio Devices PDF | HTML 26 Mär 2019
Application note AN-1737 Managing EMI in Class D Audio Applications (Rev. A) 01 Mai 2013

Design und Entwicklung

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Evaluierungsplatine

TAS2552EVM — TAS2552 – Evaluierungsmodul Audio-Leistungsverstärker der Klasse D, 4 W

The TAS2552EVM is a USB audio amplifier with an IV feedback, Boosted Class-D mono amplifier. Together with the TAS2552 control software and a customer supplied speaker and power supply, it allows easy evaluation of the TAS2552 audio amplifier. The TAS2552 control software is compatible with Windows (...)

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Simulationsmodell

TAS2553 IBIS Model

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PSpice® für TI ist eine Design- und Simulationsumgebung, welche Sie dabei unterstützt, die Funktionalität analoger Schaltungen zu evaluieren. Diese voll ausgestattete Design- und Simulationssuite verwendet eine analoge Analyse-Engine von Cadence®. PSpice für TI ist kostenlos erhältlich und (...)
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