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Home » NEWEST Products » New by Manufacturer » Maxim Integrated » Maxim Integrated MAX9835x Audio Amplifiers
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Maxim MAX9835x Audio Amplifiers

Maxim MAX9835x Audio Amplifiers

Maxim MAX98355A/B Audi Amplifiers

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Additional Resources

Maxim Integrated's MAX98355A/MAX98355B Audio Amplifiers are digital pulse-code modulation (PCM) input Class D power amplifiers that provide Class AB audio performance with Class D efficiency. Both the MAX98355A and MAX98355B ICs from Maxim are supported by a highly flexible digital audio interface, with the MAX98355A supporting I²S data, the MAX98355B supporting left-justified data, and both ICs supporting time division multiplexed (TDM) data. Five selectable gain settings (3dB, 6dB, 9dB, 12dB, and 15dB) set by a single gain-select input (GAIN) are available with the MAX98355A and MAX98355B ICs, and the digital audio interface accepts sample rates ranging from 8kHz to 96kHz for all supported data formats.  These flexible ICs eliminate the need for the external MCLK signal that is usually needed for PCM communication, thus reducing EMI and possible board coupling issues as well as reducing the size and pin count of the ICs.  The MAX98355 Evaluation Kit (EV), a fully assembled and tested PCB that evaluates the MAX98355 PCM digital input Class D power amplifier, operates from a single 2.5V to 5.5V DC power supply and can deliver 3.2W into a 4Ω load.


MAX98355A/B IC Features
  • Single-supply operation (2.5V to 5.5V)
  • 3.2W output power into 4Ω at 5V
  • 2.2mA quiescent current
  • 92% efficiency (RL=8Ω, POUT=900mW, VDD=3.7V)
  • 25µVRMS output noise (AV=15dB)
  • Low 0.013% THD+N at 1kHz
  • No MCLK required
  • Sample rates of 8kHz to 96kHz
  • 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
MAX98355 Evaluation Kit Features
  • 2.5V to 5.5V single-supply operation
  • Only a single external component (VDD capacitor) required in many applications
  • I²S, Left-Justified, or TDM input
  • Five selectable gains
    (3dB, 6dB, 9dB, 12dB, and 15dB)
  • No MCLK required
  • Sample rates of 8kHz to 96kHz
  • Audio channel select (Left, Right, or 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

Applications
  • Cellular phones
  • Tablets
  • Portable media players
  • Notebook computers

Part Number VSUPPLY
(V)
Input
Type
Channels Fixed Gain
(dB)
PSRR
(dB) min
Interface Operating
Temperature
MAX98355A
New!

2.5 to 5.5 PCM 1
3
6
9
12
15
77 I²S TDM -40 to +85ºC
MAX98355B
2.5 to 5.5 PCM 1
3
6
9
12
15
77 Left-Justified TDM
-40 to +85ºC
MAX98355EVKIT#
2.5 to 5.5
PCM
-
3
6
9
12
15
-
-
-


MAX98355 Block Diagram


MAX98355 Eval Kit Block Diagram

Maxim MAX98356 PDM Input Audio Amplifier

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Additional Resources

Maxim Integrated'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.


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

MAX98355 Evaluation Kit

MAX98355 Evaluation Kit (EV), a fully assembled and tested PCB that evaluates the MAX98355 PCM digital input Class D power amplifier, operates from a single 2.5V to 5.5V DC power supply and can deliver 3.2W into a 4Ω load.


MAX98355 Evaluation Kit Features
  • 2.5V to 5.5V single-supply operation
  • Only a single external component (VDD capacitor) required in many applications
  • I²S, Left-Justified, or TDM input
  • Five selectable gains
    (3dB, 6dB, 9dB, 12dB, and 15dB)
  • No MCLK required
  • Sample rates of 8kHz to 96kHz
  • Audio channel select (Left, Right, or 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

MAX98356 Evaluation Kit

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.


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
  • Maxim Integrated