8-Bit CODECs

 

Part Number	Replacement	Explanation

Description

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The MAX1102/MAX1103/MAX1104 CODECs provide both an 8-bit analog-to-digital converter (ADC) and an 8-bit digital-to-analog converter (DAC) with a 4-wire logic interface. The MAX1102/MAX1103 include an onboard +2V/+4V reference, providing a well-regulated, low noise reference for both the ADC and DAC. The MAX1104 offers ratiometric conversion, with the reference internally connected to V_DD.

The MAX1102/MAX1103/MAX1104 are low-cost, low-power CODECs for use with microcontrollers (µCs). They allow for greater flexibility when selecting µC. Less expensive µCs without onboard converters can be used while maintaining overall system performance.

The MAX1102 operates from a single +2.7V to +3.6V supply, the MAX1103 operates from a +4.5V to +5.5V supply, and the MAX1104 operates from a +2.7V to +5.5V supply. The MAX1102/MAX1103 incorporate a V_DD monitor in addition to AIN for power supply monitoring. All devices feature a low 18µA standby mode, where both data converters are disabled while the reference remains active, and three shutdown modes: ADC disabled, DAC disabled, and complete shutdown (1µA). A quick 10µs wake-up time allows the MAX1102/MAX1103/MAX1104 to cycle in and out of shutdown even during short-duration idle times.

The MAX1102/MAX1103/MAX1104 are available in a space-saving 8-pin µMAX® package.

MAX1102, MAX1103, MAX1104: Functional Diagram Enlarge+

Key Features

• 8-Bit ADC
  • ±1 LSB INL
  • Built-In Track-and-Hold
  • 48dB of SINAD
• 8-Bit DAC
  • ±1 LSB INL
  • 55dB of SFDR
• Internal Conversion Clock
• Single-Supply Operation
  • +2.7V to +3.6V (MAX1102)
  • +4.5V to +5.5V (MAX1103)
  • +2.7V to +5.5V (MAX1104)
• Low Power Consumption
  • 0.5mA at 25ksps
  • 1µA Shutdown Mode
• 6MHz 4-Wire SPI™, QSPI™, and MICROWIRE™ Compatible Interface
• Compact 8-Pin µMAX Package
• Internal Voltage Reference
  • +2V: MAX1102
  • +4V: MAX1103
• Power-Supply Monitor (MAX1102/MAX1103)
• Rail-to-rail DAC Output Buffer

Applications/Uses

• Analog I/O for Microcontrollers
• Analog System Signal Supervision
• Voice Recording and Playback