DAC7551-Q1 - Automotive 12-Bit, Ultralow Glitch, Voltage Output Digital to Analog Converter

The DAC7551-Q1 device is a single-channel, voltage-output digital-to-analog converter (DAC) with exceptional linearity and monotonicity, and a proprietary architecture that minimizes glitch energy. The low-power DAC7551-Q1 device operates from a single 2.7- to 5.5-V supply. The DAC7551-Q1 output amplifiers can drive a 2-kΩ, 200-pF load rail-to-rail with 5-µs settling time. The output range is set using an external voltage reference.

The 3-wire serial interface operates at clock rates up to 50 MHz and is compatible with SPI™, QSPI™, microwire, and DSP interface standards. The device incorporates a power-on-reset (POR) circuit to ensure that the DAC output powers up to 0 V and remains at that voltage until a valid write cycle to the device occurs. The device contains a power-down feature that reduces the current consumption of the device to under 2 µA.

Small size and low-power operation make the DAC7551-Q1 device ideally suited for battery-operated, portable applications. The power consumption is typically 0.5 mW at 5 V, 0.23 mW at 3 V, and reduces to 1 µW in power-down mode.

The DAC7551-Q1 device is available in a 12-pin USON package and is specified over –40°C to +105°C. The Z-suffix offers reduced delamination compared to standard device.

• Qualified for Automotive Applications
• Relative Accuracy (INL): ±0.35 LSB
• Ultra-Low Glitch Energy: 0.1 nV-s
• Low-Power Operation: 100 µA at 2.7 V
• Power-On Reset-to-Zero Scale
• Power Supply: 2.7- to 5.5-V Single Supply
• Power-Down: 0.05 µA at 2.7 V
• 12-Bit Linearity and Monotonicity
• Rail-to-Rail Voltage Output
• Settling Time: 5 µs (Max)
• SPI-Compatible Serial Interface With Schmitt-
  Trigger Input: Up to 50 MHz
• Daisy-Chain Capability
• Asynchronous Hardware Clear-to-Zero Scale
• Specified Temperature Range:
  –40°C to +105°C
• Small, 2-mm × 3-mm, 12-Lead USON Package
• Z-Suffix Offers Improved Delamination