DAC7565 - 12-Bit, Quad Channel, Ultra-Low Glitch, Voltage Output DAC with 2.5V, 2ppm/°C Internal Reference

Updated : 2020-01-09 14:29:42
Description

The DAC7565 is a low-power, voltage-output, four-channel, 12-bit digital-to-analog converter (DAC). The device includes a 2.5V, 2ppm/°C internal reference (enabled by default), giving a full-scale output voltage range of 2.5V. The internal reference has an initial accuracy of 0.02% and can source up to 20mA at the VREFH/VREFOUT pin. The device is monotonic, provides very good linearity, and minimizes undesired code-to-code transient voltages (glitch). The DAC7565 uses a versatile 3-wire serial interface that operates at clock rates up to 50MHz. The interface is compatible with standard SPI™, QSPI™, Microwire™, and digital signal processor (DSP) interfaces.

The DAC7565 incorporates a power-on-reset circuit that ensures the DAC output powers up at either zero-scale or mid-scale until a valid code is written to the device. The device contains a power-down feature, accessed over the serial interface, that reduces the current consumption of the device to 1.3µA at 5V. Power consumption is 2.9mW at 3V, reducing to 1.5µW in power-down mode. The low power consumption, internal reference, and small footprint make this device ideal for portable, battery-operated equipment.

The DAC7565 is drop-in and functionally compatible with the DAC8165 and DAC8565, and functionally compatible with the DAC7564, DAC8164 and DAC8564. All these devices are available in a TSSOP-16 package.

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Features

  • Relative Accuracy: 0.5LSB
  • Glitch Energy: 0.15nV-s
  • Internal Reference:
    • 2.5V Reference Voltage (enabled by default)
    • 0.004% Initial Accuracy (typ)
    • 2ppm/°C Temperature Drift (typ)
    • 5ppm/°C Temperature Drift (max)
    • 20mA Sink/Source Capability
  • Power-On Reset to Zero-Scale or Mid-Scale
  • Asynchronous Clear to Zero-Scale or Mid-Scale
  • Ultra-Low Power Operation: 1mA at 5V
  • Wide Power-Supply Range: +2.7V to +5.5V
  • 12-Bit Monotonic Over Temperature Range
  • Settling Time: 10µs to ±0.024% Full-Scale Range (FSR)
  • Low-Power Serial Interface with Schmitt-Triggered Inputs: Up to 50MHz
  • On-Chip Output Buffer Amplifier with Rail-to-Rail Operation
  • 1.8V to 5.5V Logic Compatibility
  • Temperature Range: –40°C to +105°C
  • APPLICATIONS
    • Portable Instrumentation
    • Closed-Loop Servo-Control
    • Process Control, PLCs
    • Data Acquisition Systems
    • Programmable Attenuation
    • PC Peripherals

    SPI, QSPI are trademarks of Motorola, Inc.
    Microwire is a trademark of National Semiconductor.
    All other trademarks are the property of their respective owners.