Maxim Integrated has introduced two digital-input Class-D power amplifiers that simplify designs, eliminate complicated programming, reduce noise, and hasten time to market. The MAX98355 (PCM) and MAX98356 (PDM) offer high clock-jitter tolerance in Class D audio amplifiers and deliver superior audio quality. Audio devices can now be simplified because unique internal circuitry in the MAX98355 and MAX98356 detects the input clock and automatically calculates the sample rate. This reduces complicated programming and the need for system software support.
Key Advantages
- Excellent audio quality with exceptionally high jitter tolerance: low 0.013% THD+N at 1 kHz and 99 dB dynamic range
- Lower power consumption: 92% efficiency (RL = 8 ?, POUT = 900 mW, VDD = 3.7 V)
- Smaller size and simplified design: 2.5 V to 5.5 V single-supply operation
Industry Commentary
"These digital-input Class-D amplifiers make system design nearly plug and play," says Robert Nicoletti, applications manager at Maxim Integrated. "This convenience reduces design complexity for the user."
"Market analysis firm Databeans projects that the Class-D audio-amplifier market is growing at a CAGR of 12%, well above the overall consumer semiconductor market. By integrating DACs into the Class-D audio amps, Maxim allows users to reduce size yet still reap all the benefits of a digital input," said Susie Inouye, Research director at Databeans.
Availability and Pricing
Available in a 9-pin WLP package (1.345 x 1.435 x 0.64 mm)
Specified over the -40 to +85 °C temperature range.
Pricing starts at $0.82 (1000-up, FOB USA).
Maxim Integrated
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