AD1990:  Class-D Audio Power Amplifier – 2 × 5W

The AD199x amplifiers, including the AD1990, AD1992, and AD1994, are single-chip devices containing an integrated stereo ∑∆ modulator and stereo "bridge-tied" load (BTL) power stage. The AD199x ...More

AD1990:  Class-D Audio Power Amplifier – 2 × 5W

Product Description

The AD199x amplifiers, including the AD1990, AD1992, and AD1994, are single-chip devices containing an integrated stereo ∑∆ modulator and stereo "bridge-tied" load (BTL) power stage. The AD199x amplifiers deliver audiophile sound quality (THD < 0.005 %; SNR > 101 dB; PSRR > 65 dB) with at least 50 % less heat than traditional linear amplifiers. The device’s breakthrough performance is achieved through the closed loop integration of a Sigma-Delta modulator with a bridge drive circuit and high power output stage. In addition to achieving superior audio performance, this novel ∑∆ architecture minimizes radiated and conducted EMI and RF emissions.

Output Power
AD1990: 2 × 5W
AD1992: 2 × 10W
AD1994: 2 × 25W (1 × 50W)

Applications

  • Automotive Amplifiers
  • Flat Panel Televisions
  • PC Audio Systems
  • Mini Components

Features

  • Integrated Stereo ∑∆ Modulator and Power Stage
  • 0.005% THD+N
  • 101.5 dB Dynamic Range
  • PSRR>65dB
  • RDS-ON < 0.3 Ω (per transistor)
  • Efficiency >80% @ 5 W/6 Ω
  • EMI Optimized Modulator
  • On-Off-Mute Pop Noise Suppression
  • Short Circuit Protection
  • Over-Temperature Protection
  • Low Cost DMOS Process
  • Package Options: 64-LFCSP

Diagrams

AD1990 Diagram
Functional Block Diagram for AD1990

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* The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.