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:
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| Dual BTL class-D power audio amplifier AD199x |
Datasheet for AD199x: Download
