DAC7562 Dual, Low-Power, Voltage-Output DACs

DAC7562 Dual, Low-Power, Voltage-Output DACs

Texas Instruments' DAC7562 devices are low-power, voltage-output, dual-channel, 12-bit digital-to-analog converters (DACs). These devices include a 2.5 V, 4 ppm/°C internal reference, giving a full-scale output voltage range of 2.5 V or 5 V. The internal reference has an initial accuracy of ±5 mV and can source or sink up to 20 mA at the VREFIN/VREFOUT pin.

These devices are monotonic, providing excellent linearity and minimizing undesired code-to-code transient voltages (glitch). They use a versatile three-wire serial interface that operates at clock rates up to 50 MHz. The interface is compatible with standard SPI, QSPI, Microwire, and digital signal processor (DSP) interfaces. The DACxx62 devices incorporate a power-on-reset circuit that ensures the DACs' output powers up and remains at zero scale until a valid code is written to the devices. These devices contain a power-down feature that reduces current consumption to typically 550 nA at 5 V. The low-power consumption, internal reference, and small footprint make these devices ideal for portable, battery-operated equipment.

The DAC7562 devices are drop-in and function-compatible with other DACxx62 devices. These are available in MSOP-10 and SON-10 packages.

Features
  • Relative accuracy:
    • DAC756x (12-bit): 0.3 LSB INL
  • Glitch impulse: 0.1 nV-s
  • Bidirectional reference: input or 2.5 V output
    • Output disabled by default ±5 mV initial accuracy (max)
    • 4 ppm/°C temperature drift (typ)
    • 10 ppm/°C temperature drift (max)
    • 20 mA sink and source capability
  • Power-on reset to zero scale or mid-scale
  • Low-power: 4 mW (typ, 5 V AVDD, including internal reference current)
  • Wide power-supply range: 2.7 V to 5.5 V
  • 50 MHz SPI with Schmitt-triggered inputs
  • LDAC and CLR functions
  • Output buffer with rail-to-rail operation
  • Packages: WSON-10 (3 mm × 3 mm), VSSOP-10
  • Temperature range: -40°C to 125°C
Applications
  • Portable instrumentation
  • PLC analog output modules
  • Closed-loop servo controls
  • Voltage controlled oscillator tuning
  • Data acquisition systems
  • Programmable gain and offset adjustment
Manufacturer