MAX5382

PRODUCTION

Low-Cost, Low-Power, 8-Bit DACs with 2-Wire Serial Interface in SOT23

Lowest-Cost, Smallest DAC with On-Chip Reference

Data Sheet (Rev. 2) Product Selection Table
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Overview

  • 8-Bit Accuracy in a Miniature 5-Pin SOT23
  • Wide +2.7V to +5.5V Supply Range (MAX5382)
  • Low 230µA max Supply Current
  • 1µA Shutdown Mode
  • Buffered Output Drives Resistive Loads
  • Low-Glitch Power-On Reset to Zero DAC Output
  • Fast I²C-Compatible Serial Interface
  • <±5% Full-Scale Error (MAX5382)
  • <±1LSB max INL/DNL

The MAX5380/MAX5381/MAX5382 are low-cost, 8-bit digital-to-analog converters (DACs) in miniature 5-pin SOT23 packages, with a simple 2-wire serial interface that allows communication with multiple devices. The MAX5380 has an internal +2V reference and operates from a +2.7V to +3.6V supply. The MAX5381 has an internal +4V reference and operates from a +4.5V to +5.5V supply. The MAX5382 operates over the full +2.7V to +5.5V supply range and has an internal reference equal to 0.9 x VDD.

The fast-mode I²C*-compatible serial interface allows communication at data rates up to 400kbps, minimizing board space and reducing interconnect complexity in many applications. Each device is available with one of four factory-preset addresses (see Selector Guide). These DACs also include an output buffer, a low-power shutdown mode, and a power-on reset that ensures the DAC outputs are at zero when power is initially applied. In shutdown mode, supply current is reduced to less than 1µA and the output is pulled down to GND with a 10kΩ resistor.

Applications

  • Automatic Gain Control
  • Automatic Offset Adjustment
  • Automatic Tuning (VCO)
  • Power-Amp Bias Control
  • Programmable Threshold Levels
MAX5382
Low-Cost, Low-Power, 8-Bit DACs with 2-Wire Serial Interface in SOT23
MAX5380, MAX5381, MAX5382: Typical Operating Circuit
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Documentation

Data Sheet 1

Reliability Data 1

Technical Articles 1

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Software Resources

Device Drivers 1

Hardware Ecosystem

Parts Product Life Cycle Description
Digital to Analog Converters (DACs) 2
MAX5384
PRODUCTION Low-Cost, Low-Power, 8-Bit DACs with 3-Wire Serial Interface in SOT23
MAX5385
PRODUCTION Low-Cost, Low-Power, 8-Bit DACs with 3-Wire Serial Interface in SOT23
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Evaluation Kits

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schematic 1
MAX9611PMB1

MAX9611PMB1 Peripheral Module

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Features and Benefits

  • Programmable Current Limit Up to 1A
  • Two Current Ranges (Jumper Selectable)
  • Measure and Read Back Load Current, Load Voltage, and Set Point
  • Power Source Up to 30V
  • Jumper-Selectable I²C Address Setting for the MAX9611
  • 6-Pin Pmod-Compatible Connector (I²C)
  • Secondary Header Allows Daisy-Chaining of Additional Modules on the I²C Bus
  • Example Software Written in C for Portability
  • RoHS Compliant
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Details

The MAX9611PMB1 peripheral module provides the necessary hardware to interface the MAX9611 current-sense amplifier with 12-bit ADC and op amp, along with the MAX5380 8-bit DAC, to any system that utilizes Pmod™-compatible expansion ports configurable for I²C communication. The IC is configured with an external p-channel FET and a current-sense resistor to form a current-limiting circuit capable of handling currents up to 1A. An 8-bit DAC (U1) is used to set the current-limit point programmatically by the host through the I²C bus. In addition to providing a programmable current-limit function, the ADC within the IC measures the load current/voltage and the set-point voltage that can be read by the host through the I²C bus.
Refer to the MAX9611 IC data sheet for detailed information regarding operation of the IC.

Applications

  • Battery Operated Equipment
  • General Power Supply/Monitoring Applications
  • Handheld Devices
  • Server Backplanes
MAX9611PMB1
MAX9611PMB1 Peripheral Module
MAX9611PMB1 Board Photo

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