Design contains obsolete parts

EVAL-SSM4321Z: 3.77W, 2.5 ~ 5.5V in, Class D

Summary

The SSM4321 is a fully integrated, high efficiency, Class-D audio amplifier with digitized output of output voltage, output current, and PVDD supply. It is designed to maximize performance for mobile phone applications.

The application circuit requires a minimum of external components and operates from a 2.5 V to 5.5 V supply for the amplifier and a 1.42 V to 3.6 V supply for IO. It is capable of delivering 2.2 W of continuous output power with less than 1% THD + N driving an 4 Ω load from a 5.0 V supply with a 0.1Ω V/I sense resistor.

The user guide describes how to configure and use the SSM4321 evaluation board. It is recommended that this user guide be read in conjunction with the SSM4321 data sheet, which provides specifications, internal block diagrams, and application guidance for the amplifier IC.

The SSM4321 evaluation board carries a complete application circuit for driving a loudspeaker and obtaining voltage and current data from the output.

Specifications

Manufacturer	Analog Devices Inc.
Category	Audio Amplifiers
Eval Board Part Number	EVAL-SSM4321Z-ND
Eval Board Supplier	Analog Devices Inc.
Eval Board	Normally In Stock
Amplifier Type	Class D
Number of Outputs	Mono
Output Power (RMS) @ Load	3.77 W @ 3 Ω
Voltage In	2.5 ~ 5.5 V
THD+N (1kHz) @ Conditions	< 0.01% @ 1 W (8 Ω, 5 V)
Features	Click and Pop Suppression Filterless Output I²S Interface Short Circuit Protection Shutdown, Enable, Standby Thermal Protection
Efficiency @ Conditions	>80%, 0.9 ~ 2.8 W @ 3 Ω , 5V >80%, 0.6 ~ 2.1 W @ 3 Ω , 3.6 V >75%, 300 ~ 700 mW @ 3 Ω , 2.5 V
Standby Current [Typical]	100 nA
Quiescent Current [Typical]	3.7 mA
Component Count + Extras	13 + 8
Application / Target Market	Audio: MP3 Players Cell Phones Handheld games Portable Devices Tablets
Design Author	Analog Devices
Main I.C. Base Part	SSM4321
Quiescent Current [Maximum]	- Not Given
Standby Current [Maximum]	- Not Given
Date Created By Author	2013-04
Date Added To Library	2013-08