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MAX8821EVKIT

Evaluation Kit for the MAX8821

Product Details

Key Features

Simplified Block Diagram

Technical Docs

Data Sheet Evaluation Kit for the MAX8821 Jun 18, 2008

Support & Training

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Filtered Search

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Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.

Key Features

  • Windows 2000/XP/Vista (32-Bit)-Compatible Software
  • CMAXQBUSB+ Interface Board with USB PC Connection (Cable Included)
  • Proven PCB Layout
  • Fully Assembled and Tested
  • White LED Inverting Charge Pump
    • Independent Adaptive Current Regulators for Each LED
    • Six Low-Dropout Current Regulators
    • Flexible I²C Dimming Control for Each LED
    • Ramp Up/Down Current Control for Each LED
    • Low 70µA (typ) Quiescent Current
    • TA Derating Function Protects LEDs
  • Mono 2W Class D Loudspeaker Amplifier
    • 85% Efficiency (RL = 8Ω, POUT = 600mW)
    • Low 0.05% THD+N at 1kHz
    • High 65dB PSRR at 1kHz
    • Fully Differential Inputs
    • -3dB to +24dB Gain Settings in 3dB Steps
    • Integrated Click-and-Pop Suppression
    • Low Quiescent Current
  • Dual Low-Noise LDO
    • 45µVRMS Output Noise, 73dB PSRR
    • Flexible I²C-Controlled Output Voltages
    • 200mA and 300mA Output Current Drive

Applications/Uses

  • Cell Phones and Smartphones
  • MP3 Players, GPS Devices
  • PDAs, Digital Cameras, Camcorders

Description

The MAX8821 evaluation kit (EV kit) is a fully assembled and tested circuit for evaluating the MAX8821 white LED charge pump with a mono Class D audio amplifier and dual LDOs. The MAX8821 EV kit operates from a 2.7V to 5.5V input supply range and is controlled by an I²C interface. The MAX8821 features a high-efficiency, adaptive-mode inverting charge pump that drives up to six LEDs with constant current for uniform brightness.

The EV kit also includes Windows® 2000/XP/Vista®-compatible software that provides a simple graphical user interface (GUI) for exercising the features of the MAX8821. The EV kit software features an I²C interface to control the LED current, ramp-up/ramp-down time, and blink on/off-time. An internal temperature derating function reduces the current above +40°C to protect the LEDs.

The MAX8821 also features a mono Class D audio amplifier with adjustable gain, through the I²C interface, from -3dB to +24dB in ten 3dB steps. The I²C control interface selects the audio amplifier fixed-frequency mode or spread-spectrum mode, in addition to selecting individual LDO output voltages.

Simplified Block Diagram

Technical Docs

Data Sheet Evaluation Kit for the MAX8821 Jun 18, 2008

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.