AD5668BRUZ-2REEL7

Overview

The AD5668BRUZ-2REEL7 is an octal, 16-bit, buffered voltage-output digital-to-analog converter (DAC) from Analog Devices. It operates on a single 2.7 V to 5.5 V supply and features an on-chip 2.5 V reference with 5 ppm/°C temperature coefficient, providing a 5 V full-scale output range. The device supports a versatile 3-wire serial interface compatible with SPI, QSPI, Microwire, and DSP standards, with clock rates up to 50 MHz. It includes power-down modes reducing current to 400 nA at 5 V, rail-to-rail output amplifiers, and a power-on reset circuit ensuring outputs start at zero scale.

Feature Summary

• Octal architecture with 16-bit resolution and rail-to-rail buffered voltage outputs
• Integrated 2.5 V internal reference with 5 ppm/°C stability for 5 V full-scale range
• Versatile 3-wire serial interface supporting SCLK frequencies up to 50 MHz
• Power-down capability reduces consumption to 400 nA at 5 V with software-selectable output loads

Applications

• Process control systems
• Data acquisition systems
• Portable battery-powered instruments
• Programmable voltage and current sources

Procurement Notes

Verify the suffix '2' confirms the inclusion of the 2.5 V internal reference and 5 V full-scale output range. Confirm the 'RUZ' designation indicates the 16-lead TSSOP package and 'REEL7' specifies tape-and-reel packaging. Ensure compatibility with the required operating temperature range of -40°C to +105°C.

Selection Notes

Select this component when eight independent 16-bit channels are required in a compact footprint. The internal 2.5 V reference eliminates the need for external precision references if a 5 V output swing is acceptable. Verify that the 3-wire serial interface timing meets the system's microcontroller or DSP requirements.

Part Context

This part belongs to the AD5628/AD5648/AD5668 family of denseDACs. The AD5668 variant specifically provides 16-bit resolution. The '-2' suffix distinguishes it from the '-1' (1.25 V ref) and '-3' (midscale reset) variants. It shares pinouts and functionality with the AD5628 (12-bit) and AD5648 (14-bit) for design flexibility.

Replacement Considerations

Public confirmed substitute part numbers: AD5668BRUZ-3REEL7, AD5668ARUZ-2REEL7.