Date: 01/10/2012

Digital i/p class D amplifiers from Maxim feature higher clock jitter tolerance

Maxim Integrated Products, Inc. has announced two digital-input Class D power amplifiers MAX98355 (pulse-code modulation, PCM) and MAX98356 (pulse-density modulation, PDM) offering better clock jitter tolerance.

The internal circuitry in MAX98355/MAX98356 detects the input clock and automatically calculates the sample rate saving the additional programming effort.

Specifications:
1. Jitter tolerance: low 0.013% THD+N at 1kHz and 99dB dynamic range
2. Power consumption: 92% efficiency (RL = 8 Ohm, POUT = 900mW, VDD = 3.7V)
3. Smaller solution size: 2.5V to 5.5V single-supply operation
4. Temperature range: -40 Deg C to +85 Deg C

“Market analysis firm Databeans projects that the Class D audio amplifier market is growing at a compound annual growth rate of 12 percent each year, well above the overall consumer semiconductor market. By integrating digital DACs into the Class D audio amps, Maxim allows users to reduce solution size while still reaping all the benefits of a digital input,” said Susie Inouye, Research Director at Databeans.

The devices are available in a 9-pin WLP package (1.345 x 1.435 x 0.64 mm) and the price begins at $0.82 (1000-up, FOB USA).