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Home » NEWEST Products » New by Manufacturer » Maxim Integrated » MAXIM MAX98356 PDM Input Audio Amplifiers
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Maxim MAX98356 PDM Input Audio Amplifier

Maxim MAX98356 PDM Input Audio Amplifier

Maxim's MAX98356 PDM Input Audio Amplifier is a digital pulse-density modulated (PDM) input Class D power amplifier that provides Class AB audio performance with Class D efficiency. The MAX98356 Audio Power Amplifier from Maxim takes a stereo pulse density modulated (SPDM) input signal directly into the DAC and can be configured to produce a left channel, right channel, or (left + right)/2 output from the stereo input data. This IC features an extremely robust digital audio interface with very high wideband jitter tolerance (12ns typ) on PDM_CLK.  The MAX98356 offers five selectable gain settings (3dB, 6dB, 9dB, 12dB, and 15dB) set by a single gain-select input (GAIN) and is available in a 9-pin WLP package (1.345mmx1.435mmx0.64mm).  Other MAX98356 features include 2.5V to 5.5V single supply voltage operation, 3.2W output power into 4Ω at 5V, and operating temperature range -40ºC to +85ºC.  The MAX98356 Evaluation Kit is a fully assembled and tested PCB that evaluates the MAX98356 PDM digital input Class D power amplifier. The MAX98356 Evaluation Kit operates from a single 2.5V to 5.5V power supply and is capable of delivering 3.2W into a 4Ω load with either filterless Class D outputs or with an optional Class D filter that eases evaluation.

Maxim MAX98356 Audio Amplifier

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MAX98356 IC Features
  • Single-supply operation (2.5V to 5.5V)
  • 3.2W output power into 4Ω at 5V
  • 1.7mA quiescent current
  • 92% efficiency (RL=8Ω, POUT=900mW, VDD=3.7V
  • 29µVRMS output noise (AV=6dB)
  • Low 0.013% THD+N at 1kHz
  • Exceptionally high jitter tolerance
  • Supported PDM_CLK rates of 1.84MHz-4.32MHz and 5.28MHz-8.64MHz
  • Supports left, right, or (left + right)/2 outputs
  • Sophisticated edge rate control enables filterless class D outputs
  • 77dB PSRR at 217Hz
  • Low RF susceptibility rejects TDMA noise from GSM radios
  • Extensive click-and-pop reduction circuitry
  • Robust short-circuit and thermal protection
  • Available in space-saving package: 1.345mm x 1.435mm WLP (0.4mm pitch)
MAX98356 Eval Kit Features
  • 2.5V to 5.5V single-supply operation
  • Only a single external component (VDD capacitor) required in many applications
  • PDM digital input
  • Five selectable gains (3dB, 6dB, 9dB, 12dB, and 15dB)
  • Supported PDM_CLK rates of 1.84MHz to 4.32MHz and 5.28MHz to 8.64MHz
  • Audio channel select (left, right, (left + right/2))
  • Filterless Class D outputs
  • Optional Class D output filters for ease of evaluation
  • Low-power shutdown mode
  • Low RF susceptibility rejects TDMA noise from GSM radios
  • Extensive click-and-pop reduction circuitry
  • Robust short-circuit and thermal protection
  • Proven PCB layout
  • Fully assembled and tested
Applications
  • Cellular phones
  • Notebook computers
  • Portable media players
  • Tablets
  • Ultrasonic devices
Part Numbers VSUPPLY (V) Input Type Channels Fixed Gain (dB) PSRR (dB) Interface Operating Temp.
MAX98356
2.5 to 5.5 PDM 1
3
6
9
12
15
77 SPDM -40 to +85ºC
MAX98356EVKIT#
2.5 to 5.5 PDM   -
3
6
9
12
15
- - -

MAX98356 Block Diagram



MAX98356 Eval Kit Block Diagram



 
  • Maxim Integrated
  • Semiconductors|Integrated Circuits|IC-Audio