AD5668BRUZ-3REEL7

Overview

The AD5668BRUZ-3REEL7 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 internal 2.5 V reference with 5 ppm/°C temperature coefficient, providing a 5 V full-scale output range. The device includes a power-on reset circuit that initializes outputs to midscale upon startup. It supports a versatile 3-wire serial interface compatible with SPI, QSPI, Microwire, and DSP standards, with clock rates up to 50 MHz. Key specifications include ±1 LSB differential nonlinearity, rail-to-rail output swing, and power-down current consumption of 400 nA at 5 V.

Feature Summary

• Octal architecture with 16-bit resolution and rail-to-rail buffered voltage outputs
• Internal 2.5 V reference (5 ppm/°C) enabling 5 V full-scale output range
• Power-on reset function initializing all channels to midscale
• Low power consumption with 400 nA power-down current at 5 V

Applications

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

Procurement Notes

Verify the suffix 'REEL7' indicates tape-and-reel packaging containing 1000 units. Confirm the '-3' designation corresponds to the internal 2.5 V reference configuration for 5 V output spans. Ensure compatibility with the 16-lead TSSOP package dimensions for PCB layout.

Selection Notes

Select this component when eight independent 16-bit voltage outputs are required in a compact footprint. The internal 2.5 V reference simplifies design by eliminating external precision references. Verify that the midscale power-on reset aligns with system safety requirements, as other variants offer zero-scale initialization.

Part Context

This part belongs to the AD5628/AD5648/AD5668 denseDAC family, which shares pinouts and functionality across 12-, 14-, and 16-bit resolutions. The AD5668 represents the highest resolution variant in this series. The 'RUZ' suffix denotes the 16-lead TSSOP package, while 'B' indicates the industrial temperature grade (-40°C to +105°C).

Replacement Considerations

The AD5668ARUZ-3REEL7 offers identical electrical performance but falls under the A-grade accuracy specification. For lower resolution needs, the AD5648 or AD5628 provide pin-compatible alternatives with reduced bit depth.