DAC80504RTET

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1. Describe

The DAC80504RTET, DAC70504, and DAC60504 (DACx0504) are pin-compatible families of low power, quad, buffered voltage output, digital-to-analog converters (DACs) with 16-, 14-, and 12-bit resolutions. The DAC80504RTET includes a low drift, 2.5V internal reference, eliminating the need for an external precision reference in most applications. A user-selectable gain configuration provides a full-scale output voltage of 1.25 V (gain = ½), 2.5 V (gain = 1), or 5 V (gain = 2). These devices operate from a single 2.7-V to 5.5-V supply, are specified monotonic, and provide high linearity of ±1 LSB INL. Communication with the DAC80504RTET is performed through a 4-wire serial interface clocked at rates up to 50 MHz. The VIO pin enables serial interface operation from 1.7 V to 5.5 V. The flexible interface of the DAC80504RTET enables operation with a wide range of industry standard microprocessors and microcontrollers. The DAC80504RTET contains a power-on reset circuit that powers up and keeps the DAC output at zero-scale or mid-scale until a valid code is written to the device. These devices consume as little as 0.7 mA/channel at 5.5 V, making these devices an excellent choice for battery-powered devices. A per-channel power-down feature reduces device current consumption to 15 µA. The DAC80504RTET features operation over the –40°C to +125°C temperature range and is packaged in a small 3mm × 3mm QFN package.

2. Feature

    1. Performance

        – INL: ±1 LSB maximum at 16-bit resolution

        – TUE: ±0.1% of maximum FSR

    2. Integrated 2.5 V precision internal reference

        – Initial accuracy: ±5 mV, max

        – Low drift: 2 ppm/°C (typ.)

    3. High drive capability: 20 mA, 0.5 V from supply rail

    4. Flexible output configuration

        – User selectable gain: 2, 1 or ½

        – reset to zero or midscale

    5. Wide working range

        – Power supply: 2.7 V to 5.5 V

        – Temperature: –40˚C to +125˚C

    6. 50MHz, SPI-compatible serial interface

        – 4-wire mode, 1.7 V to 5.5 V operation

        – Daisy chain operation

        – CRC error checking

    7. Low power consumption: 0.7 mA/channel at 5.5 V

    8. Small package: 3mm × 3mm, 16-pin WQFN

3. Pin configuration

4. Pin Description

5. Application

    1. Optical Network

    2. Wireless infrastructure

    3. automated industry

    4. data collection system

6. Application Information

High linearity, small package size and wide temperature range make the DAC80504RTET suitable for various applications such as optical networking, wireless infrastructure, industrial automation and data acquisition systems. This The device contains a 2.5 V internal reference and an internal reference divider circuit that enables full-scale DAC output voltages of 1.25 V, 2.5 V, or 5 V.