5Wx2 10Wx2 25Wx2 40Wx2 Dual BTL class-D power audio amplifier AD199x

GENERAL DESCRIPTION:

The AD199x is a two channel Bridge Tied Load (BTL) switching audio power amplifier with integrated ∑∆ modulator. The modulator accepts a 1Vrms input signal (maximum power) and generates a switching waveform to drive speakers directly. One of the two modulators can control both output stages providing twice the current for single-channel applications. A digital, microcontroller-compatible interface provides control of reset, mute and PGA gain as well as output signals for thermal and over-current error conditions. The output stage can operate from supply voltages ranging from 8V to 20V. The analog modulator and digital logic operate from a 5V supply.

AD1990: 5Wx2 (10Wx1)
AD1992: 10Wx2 (20Wx1)
AD1994: 25Wx2 (50Wx1)
AD1996: 40Wx2 (80Wx1)

FEATURES:

Integrated Stereo Modulator & Power Stage
0.005% THD+N
101.5dB Dynamic Range
PSRR > 65 dB
RDS-ON < 0.3 Ω (per transistor)
Efficiency > 80% @ 5W/6 Ω
EMI Optimized Modulator
On-Off-Mute Pop Noise Suppression
Short Circuit Protection
Over-Temperature Protection
Low Cost DMOS Process

APPLICATIONS:

Flat Panel Televisions
Automotive Amplifiers
PC Audio Systems
Mini Components

Circuit Diagram:

Dual BTL class-D power audio amplifier AD199x

Datasheet for AD199x: Download

Comments

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