AD1996

Preliminary Technical Data 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 Class-D Audio Power Amplifier AD1990/AD1992/AD1994/AD1996 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) APPLICATIONS Flat Panel Televisions Automotive Amplifiers PC Audio Systems Mini Components PGA0 PGA1 NFR+ 50 AINR NFL+ NFL- 62 63 www.DataSheet4U.com 53 32 31 60 LEFT CHANNEL PVDD 7,8 4,5,6 NFR51 AINL RIGHT CHANNEL PVDD2 DRIVER HIGH SIDE 41,42 PVDD2 43,44,45 OUTL+ 1,2,3 OUTR+ LEVEL SHIFT + DEAD TIME CONTROL PGND1 PVDD1 OUTL9,10 MODULATOR ...