MAX9768 Series Speaker Amplifiers


Maxim's MAX9768 series 10 W, mono, class D speaker amplifiers provides high-quality, efficient audio-power with an integrated volume control function

The MAX9768 mono, 10 W class D speaker amplifier provides high-quality, efficient audio-power with an integrated volume control function. The MAX9768 features a 64-step dual-mode (analog or digitally programmable) volume control and mute function. The audio amplifier operates from a 4.5 V to 14 V single-supply and can deliver up to 10 W into an 8 Ω speaker with a 14 V supply. A selectable spread-spectrum mode reduces EMI-radiated emissions, allowing the device to pass EMC testing with ferrite bead filters and cable lengths up to 1 m. The MAX9768 can be synchronized to an external clock, allowing synchronization of multiple class D amplifiers. The MAX9768 features high 77 dB PSRR, low 0.08% THD+N, and SNR up to 97 dB. Robust short-circuit and thermal-overload protection prevent device damage during a fault condition. The MAX9768 is available in a 24-pin, thin QFN-EP (4 mm x 4 mm x 0.8 mm) package and is specified over the extended -40°C to 85°C temperature range.

Long-Term Supply Program Lead (SnPb) Finish for COTS
Features
  • 10 W output (8 Ω, PVDD = 14 V, THD+N = 10%)
  • Spread-spectrum modulation
  • Meets EN55022B EMC with ferrite bead filters
  • Amplifier operation from 4.5 V to 14 V supply
  • 64-step integrated volume control (I²C or analog)
  • Low 0.08% THD+N (RL = 8 Ω POUT = 6 W)
  • High 77 dB PSRR
  • Two tON times offered; MAX9768—220 ms and MAX9768B—15 ms
  • Low-power shutdown mode (0.5 μA)
  • Short-circuit and thermal-overload protection

MAX9768 Series Speaker Amplifiers

Manufacturer Part Number Description Available Quantity Datasheets
MAX9768BETG+T IC AMP AUDIO 10W MONO D 24TQFN 7068
MAX9768ETG+ IC AMP AUDIO 10W MONO D 24TQFN 878
MAX9768EVKIT+ EVALUATION KIT FOR MAX9768 12