General Description

The MAX5800/MAX5801/MAX5802 2-channel, low-power, 8-/10-/12-bit, voltage-output digital-to-analog converters (DACs) include output buffers and an internal reference that is selectable to be 2.048V, 2.500V, or 4.096V. The MAX5800/MAX5801/MAX5802 accept a wide supply voltage range of 2.7V to 5.5V with extremely low power (1.5mW) consumption to accommodate most low-voltage applications. A precision external reference input allows rail-to-rail operation and presents a 100kI (typ) load to an external reference.

Benefits and Features

♦ Two High-Accuracy DAC Channels

    ◇ 12-Bit Accuracy Without Adjustment

    ◇ ±1 LSB INL Buffered Voltage Output

    ◇ Monotonic Over All Operating Conditions

    ◇ Independent Mode Settings for Each DAC

♦ Three Precision Selectable Internal References

    ◇ 2.048V, 2.500V, or 4.096V

♦ Internal Output Buffer

    ◇ Rail-to-Rail Operation with External Reference

    ◇ 4.5µs Settling Time

    ◇ Outputs Directly Drive 2kI Loads

♦ Small 5mm x 3mm 10-Pin µMAX or Ultra-Small 3mm x 3mm 10-Pin TDFN Package

♦ Wide 2.7V to 5.5V Supply Range

♦ Separate 1.8V to 5.5V VDDIO Power-Supply Input

♦ Fast 400kHz I2C-Compatible, 2-Wire Serial Interface

♦ Power-On-Reset to Zero-Scale DAC Output

♦ CLR For Asynchronous Control

♦ Three Software-Selectable Power-Down Output Impedances

    ◇ 1kI, 100kI, or High Impedance

♦ Low 350µA Supply Current at 3V VDD

Applications

    Programmable Voltage and Current Sources

    Gain and Offset Adjustment

    Automatic Tuning and Optical Control

    Power Amplifier Control and Biasing

    Process Control and Servo Loops

    Portable Instrumentation

    Data Acquisition