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The PAM8965 is an extremely high-efficiency Class-D stereo audio power amplifier with an integrated synchronous boost converter. The PAM8965 can drive two channels with 12W each into 4Ω speakers. The integrated amplifier can achieve system efficiency of 92% (at VBAT = 7.4V). The device consumes exceptionally low quiescent current (10mA at VBAT = 7.4V) and very low shutdown current (0.7μA). The integrated current-mode boost converter provides regulated power to a feature-laden Class-D stereo amplifier. These include: Spread spectrum modulation (SSM) for EMI suppression (audio and boost), which enables the use of inexpensive ferrite bead filters. Non-clipping power limit, which uses 41-step automatic gain control. Thermal foldback, which reduces output power as the chip heats up. External audio feedback pins, which allow for customization of sound by using feedback network design. Alternatively, these pins can be used for Kelvin connection to speaker terminals. GAIN pin to program audio gain at 0.5dB steps such that external resistors are not required to adjust gain, which can result in gain error. Out-of-audio switching for the boost converter, which minimizes audible noise coming from components on the board. Protection features include under-voltage and over-voltage protection on VBAT, over-voltage protection on PVDD, short circuit protection on all audio outputs, cycle-by-cycle current limit on boost converter, thermal shutdown of the entire system, DC protection for speakers, and an FLT pin that provides a fault flag.
High-Capacitance Piezo Actuator Drive
Virtual Reality 3D Active Feedback
PDA, GPS, Game Machines
Operates from 2.8V to 5V Supply
2 x 12W (10% THD+N) into 4Ω Load with VBAT = 7.4V (2SxP)
2 x 8W (10% THD+N) into 6Ω Load with VBAT = 3.7V (1SxP)
Auto Gain Control Responds to:
Non-Clip Power Limit
Externally Adjustable Gain from 26dB to 6dB with 0.5dB Steps
Exceptionally High Overall System Efficiency (92% @ VBAT = 7.4V)
Very Low IQ = 10mA (VBAT = 7.4V) for Boost + Stereo
Very Low Shutdown Current = 0.7μA
DC Protection for Speaker
Auto-Recovery on Short-Circuit Protection & Thermal Shutdown
External Audio Feedback Pins
Totally Lead-Free & Fully RoHS Compliant
Halogen and Antimony Free. “Green” Device
For automotive applications requiring specific change control(i.e. parts qualified to AEC-Q100/101/200, PPAP capable, and manufactured in IATF16949 certified facilities), please contact us or your local Diodes representative.