AD5668BRUZ-2

Overview

The AD5668BRUZ-2 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 guarantees monotonicity by design and includes a power-on reset circuit that initializes outputs to zero scale. It supports a versatile 3-wire serial interface compatible with SPI, QSPI, Microwire, and DSP standards, operating at clock rates up to 50 MHz. Key specifications include a settling time of 6 µs, differential nonlinearity of ±1 LSB, and integral nonlinearity of ±16 LSB.

Feature Summary

• Octal architecture with 16-bit resolution and rail-to-rail buffered voltage outputs
• Internal 2.5 V reference with 5 ppm/°C stability for 5 V full-scale output
• Power-down mode reduces current consumption to 400 nA at 5 V
• Hardware LDAC and CLR functions for simultaneous or asynchronous updates

Applications

• Process control systems
• Data acquisition systems
• Portable battery-powered instruments
• Digital gain and offset adjustment circuits
• Programmable voltage and current sources

Procurement Notes

Verify the specific suffix '2' indicates the internal 2.5 V reference configuration during procurement. Confirm package availability in TSSOP-16 format as required by the design. Ensure compatibility with the 2.7 V to 5.5 V supply range and check for any regional distribution restrictions associated with this part number.

Selection Notes

Select the AD5668BRUZ-2 when eight independent 16-bit channels are required with a 5 V output span. Choose this variant over the '-1' suffix if a 2.5 V reference is preferred over 1.25 V. Consider the TSSOP-16 package for through-hole or standard surface mount assembly. Verify that the 50 MHz serial clock rate meets the system's data throughput requirements.

Part Context

The AD5668BRUZ-2 belongs to the AD5628/AD5648/AD5668 denseDAC family, which offers pin-compatible options in 12-, 14-, and 16-bit resolutions. The BRUZ-2 designation specifically denotes the B grade performance level and the 2.5 V internal reference option within the 16-channel octal configuration. This family shares common interface logic and power management features across different resolution variants.

Replacement Considerations

Direct replacements within the same family include AD5668BRUZ-1 (1.25 V reference) or AD5668BRUZ-3 (midscale power-up). For lower resolution needs, AD5648BRUZ-2 (14-bit) or AD5628BRUZ-2 (12-bit) are pin-compatible alternatives. External reference designs may require additional components to match the internal reference performance.