MOSA - MS6821

Echo Processor

General Purpose OP Amp

Headphone Driver

Audio Power Amplifier

Audio DAC

Audio DAC with HP

Audio DAC with HP and
Volume Control

Audio DAC with PA

Audio Volume Controller

Audio Volume Controller
with HP

Audio Volume Controller
with PA

Audio Processor

Audio Processor(Low Cost)

Audio Combo mosa

MS6821

DTMF

Selection Guide

Products > Audio Combo > MS6821

MS6821
4 Stereo inputs / 2W PA output integrated Audio DAC and Volume Control

4 stereo inputs (mixed with an audio DAC)
Low Voltage, Low Power Consumption
Flexibility Power Managementce

Datasheet

TSSOP28

Block Diagram

Application Circuit

Features

‧Operation range: 2.4V~6.5V
‧Volume control range
    Gain: 0 to 21dB, 3dB/step
    Attenuation: 0 to –77.5dB, 1.25dB/step
‧4 stereo inputs (mixed with an audio DAC)
‧Output mode : Speaker( BTL)/Headphone(SE)
‧BTL Output power, THD+N=1%, Stereo Input
    RL=4Ω, 2W at 5V, 0.8W at 3.3V, 360mW at 2.4V
    RL=8Ω, 1.3W at 5V, 0.53W at 3.3V, 250mW at 2.4V
‧BTL Output power, DAC Input
    RL=4Ω, 1.6W at 5V, 0.70W at 3.3V, 340mW at 2.4V
    RL=8Ω, 0.83W at 5V, 0.35W at 3.3V, 170mW at 2.4V
‧Built-in 16-bit Audio DAC
‧Audio format : I2S, Right justified, Left justified
‧Control interface : I2C
‧Excellent Power Supply Rejection Ratio(PSRR)
‧Flexibility power management‧Component less
‧Reduce pop noise circuit
‧Housed in TSSOP28 package, enhanced thermalPAD

Application

‧Multimedia system
‧Portable Digital Audio

Description

The MS6821 is a 16-bits voltage-output Digital-to-Analog Converter (DAC) integrated class AB stereo headphone driver and stereo speaker power amplifier. It can drive 2W of continuous average power into a dual 4Ω bridged-tied (BTL) speaker or 2 * 90mW into stereo 32Ω single ended (SE) headphone. The 16-bit DAC supports general and popular formats as I2S, Right justified. The volume control offers wide range of gain and attenuation for 4-set stereo input. All of the functions are set by I2C interface.

The MS6821 has good feature for portable equipment, including wide voltage operation 2.4V~5.5V, low power consumption, flexible power management, component less and small package TSSOP28, make the MS6821 ideally suitable for use in the portable digital audio equipments.