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See Technical Specifications

TAS2553YFFR

2.8-W, digital/analog input smart amp with I/V sense for speaker protection & integ. 7.5-V boost

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

TAS2553YFFR
Datasheet:

TAS2553YFFR Datasheet (PDF)
Type:

Class D, Class G
Output Type:

1-Channel (Mono)
Max Output Power x Channels @ Load:

2.8W x 1 @ 8Ohm
Voltage - Supply:

1.65V ~ 1.95V
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TAS2553YFFR General Description

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.

Key Features

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

Specifications

Category	Integrated Circuits (ICs)LinearAmplifiersAudio Amplifiers	Series	-
Type	Class D, Class G	Output Type	1-Channel (Mono)
Max Output Power x Channels @ Load	2.8W x 1 @ 8Ohm	Voltage - Supply	1.65V ~ 1.95V
Features	Short-Circuit and Thermal Protection	Mounting Type	Surface Mount
Operating Temperature	-40°C ~ 85°C (TA)	Base Product Number	TAS2553