ADAU1590

Class-D Audio Power Amplifier ADAU1590 FEATURES Integrated stereo modulator and power stage 0.005% THD + N 101 dB dynamic range PSRR >55 dB RDS-ON < 0.3 Ω (per transistor) Efficiency > 90% (8 Ω) EMI-optimized modulator On/off-mute pop-noise suppression Short-circuit protection Overtemperature protection GENERAL DESCRIPTION The ADAU1590 is a 2-channel, bridge-tied load (BTL) switching audio power amplifier with an integrated Σ-Δ modulator. The modulator accepts an analog input signal and generates a switching output to drive speakers directly. A digital, microcontroller-compatible interface provides control of reset, mute and PGA gain as well as output signals for thermal and overcurrent error conditions. The output stage can operate from supply voltages ranging from 9 V to 15 V. The analog modulator and digital logic operate from a 3.3 V supply. APPLICATIONS Flat panel televisions PC audio systems Mini-components FUNCTIONAL BLOCK DIAGRAM PGA0 PGA1 PVDD www.DataSheet4U.com AINL PGA A1 A2 OUTL+ PGND PVDD B1 SLC_TH SLICER Σ-Δ MODULATOR B2 OUTL– PGND PVDD LEVEL SHIFT AND DEAD TIME CONTROL C1 C2 AINR PGA OUTR+ PGND PVDD PGA0 AVDD PGA1 D1 D2 OUTR– PGND VREF AGND DVDD DGND VOLTAGE REFERENCE fCLK/2 CLOCK OSCILLATOR MODE CONTROL LOGIC TEMPERATURE OVERCURRENT PROTECTION XTI XTO MO/ST STDN MUTE ERR OTW Figure 1. Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its u...