MAX9850
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MAX9850

Stereo Audio DAC with DirectDrive® Headphone Amplifier

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1.8V Stereo Audio DAC with Built-In DirectDrive Headphone Amplifier Designed for High-Performance, Space-Constrained Portable Applications

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Info: : PRODUCTION tooltip
Part Details
Part Models 2
1ku List Price Starting From $2.92
Features
  • 1.8V to 3.6V Single-Supply Operation
  • 30mW Stereo Headphone Output Power with 1.8V Supply
  • DirectDrive Outputs Eliminate DC-Blocking Capacitors
  • 91dB PSRR at 1kHz
  • Any Master Clock Up to 40MHz
  • Flexible I²S-Compatible Digital Audio Interface
  • I²C Headphone Volume and Mute Control
  • Stereo Line Inputs and Outputs
  • Clickless/Popless Operation
  • 2-Wire (I²C)-Compatible Control Interface
  • Available in 28-Pin Thin QFN Package
Additional Details
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The MAX9850 is a low-power, high-performance stereo audio DAC with an integrated DirectDrive headphone amplifier. The MAX9850 is designed to meet the board space and performance requirements of portable devices such as cell phones and MP3 and portable DVD players.

The MAX9850 uses Maxim's DirectDrive headphone technology that produces a ground-biased analog audio output from a single supply, which allows for driving the headphones directly from the amplifier outputs without large DC-blocking capacitors. This feature saves board space, provides higher click/pop suppression, and improves low-frequency (bass) response. The architecture does not require the headphone jack to be biased to a DC voltage and thus allows for a conventional, grounded chassis design.

The MAX9850's flexible clocking circuitry utilizes any available system clock up to 40MHz, eliminating the need for an external PLL and multiple crystal oscillators. The DAC supports a wide range of sample rates from 8kHz to 48kHz in both master and slave modes, making the MAX9850 the easiest to use and most versatile audio DAC available. It can also be operated like traditional synchronous DACs, at any integer-oversampling ratio.

The audio DAC receives input data over a flexible 3-wire interface that supports left-justified, right-justified audio data, or I²S-compatible audio data. Stereo audio line inputs are provided to either mix analog audio with the digital input stream, or to drive the headphone outputs directly. Mode settings, headphone amplifier volume controls, and shutdown for both the headphone and line outputs are programmed through a 2-wire, I²C-compatible interface.

The MAX9850 is fully specified over the -40°C to +85°C extended temperature range and is available in a low-profile, 28-pin thin QFN package (5mm x 5mm x 0.8mm).

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Applications

  • Cell Phones/Smartphones
  • MP3/Portable Multimedia Players
  • Portable DVD Players
Part Models 2
1ku List Price Starting From $2.92

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Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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Product Lifecycle

PCN

Jun 20, 2016

- 1612

ASSEMBLY

MAX9850ETI+

PRODUCTION

MAX9850ETI+T

PRODUCTION

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ASSEMBLY

MAX9850ETI+

PRODUCTION

MAX9850ETI+T

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 2

MAX9850EVCMOD2

Evaluation System/Evaluation Kit for the MAX9850

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MAX9850EVCMOD2

Evaluation System/Evaluation Kit for the MAX9850

Evaluation System/Evaluation Kit for the MAX9850

Features and Benefits

  • 1.8V to 3.6V Single-Supply Operation
  • I²C-Compatible 2-Wire Serial Interface
  • Selectable Optical/Electrical S/PDIF Input
  • On-Board 12MHz Crystal Oscillator
  • On-Board Digital Audio Receiver
  • No Detectable Clicks or Pops
  • Easy-to-Use Menu-Driven Software
  • Assembled and Tested
  • Includes Windows 98/2000/XP-Compatible Software and Demo PCB

Product Detail

The MAX9850 evaluation system (EV system) consists of a MAX9850 evaluation kit (EV kit), a companion Maxim command module (CMOD232) interface board, and software.

The MAX9850 EV kit is a fully assembled and tested surface-mount printed circuit board (PCB) that evaluates the MAX9850 headphone stereo DAC with integrated headphone driver. The EV kit is designed to be driven by any digital audio Sony/Philips Digital Interface (S/PDIF) audio source and can be optionally configured to accept generic digital audio or I²S-compatible signals. The EV kit provides RCA jacks for connecting analog input signals. A 3.5mm headphone jack allows for easy connection of headphones to the PCB.

The Maxim command module interface board (CMOD232) allows a PC to use its serial port to emulate an I²C 2-wire interface. Windows® 98/2000/XP-compatible software, which can be downloaded from the Maxim website, provides a user-friendly interface to exercise the features of the MAX9850. The program is menu driven and offers a graphical user interface (GUI) with control buttons and a status display.

The MAX9850 EV system (MAX9850EVCMOD2#) includes both the EV kit and the CMOD232 interface board. Order the MAX9850 EV kit (MAX9850EVKIT#) if you already have a command module interface.

Applications

  • Cell Phones/Smartphones
  • MP3/Portable Multimedia Players
  • Portable DVD Players

MAX9850EVKIT

Evaluation System/Evaluation Kit for the MAX9850

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MAX9850EVKIT

Evaluation System/Evaluation Kit for the MAX9850

Evaluation System/Evaluation Kit for the MAX9850

Features and Benefits

  • 1.8V to 3.6V Single-Supply Operation
  • I²C-Compatible 2-Wire Serial Interface
  • Selectable Optical/Electrical S/PDIF Input
  • On-Board 12MHz Crystal Oscillator
  • On-Board Digital Audio Receiver
  • No Detectable Clicks or Pops
  • Easy-to-Use Menu-Driven Software
  • Assembled and Tested
  • Includes Windows 98/2000/XP-Compatible Software and Demo PCB

Product Detail

The MAX9850 evaluation system (EV system) consists of a MAX9850 evaluation kit (EV kit), a companion Maxim command module (CMOD232) interface board, and software.

The MAX9850 EV kit is a fully assembled and tested surface-mount printed circuit board (PCB) that evaluates the MAX9850 headphone stereo DAC with integrated headphone driver. The EV kit is designed to be driven by any digital audio Sony/Philips Digital Interface (S/PDIF) audio source and can be optionally configured to accept generic digital audio or I²S-compatible signals. The EV kit provides RCA jacks for connecting analog input signals. A 3.5mm headphone jack allows for easy connection of headphones to the PCB.

The Maxim command module interface board (CMOD232) allows a PC to use its serial port to emulate an I²C 2-wire interface. Windows® 98/2000/XP-compatible software, which can be downloaded from the Maxim website, provides a user-friendly interface to exercise the features of the MAX9850. The program is menu driven and offers a graphical user interface (GUI) with control buttons and a status display.

The MAX9850 EV system (MAX9850EVCMOD2#) includes both the EV kit and the CMOD232 interface board. Order the MAX9850 EV kit (MAX9850EVKIT#) if you already have a command module interface.

Applications

  • Cell Phones/Smartphones
  • MP3/Portable Multimedia Players
  • Portable DVD Players

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