AD5675ARUZ-REEL7

Overview

The AD5675ARUZ-REEL7 is an octal, 16-bit buffered voltage output digital-to-analog converter (DAC) from Analog Devices Inc. It features a 2-wire I2C-compatible serial interface with clock rates up to 400 kHz and operates on a single 2.7 V to 5.5 V supply. The device guarantees monotonicity and includes a user-selectable gain of 1 or 2 via the GAIN pin or bit, allowing full-scale outputs of VREF or 2 × VREF respectively. Key static performance metrics include a maximum integral nonlinearity (INL) of ±3 LSB for B Grade and ±1.8 LSB for A Grade, a total unadjusted error (TUE) of ±0.14% FSR max, and offset errors ranging from ±1.5 mV to ±2 mV depending on grade and gain setting.

Feature Summary

• Octal 16-bit resolution with I2C interface supporting 400 kHz clock rates
• User-selectable gain configuration (×1 or ×2) for flexible output ranges
• High accuracy specifications including ±3 LSB INL (B Grade) and ±0.14% TUE max
• Integrated power-on reset circuit with RSTSEL pin for zero or midscale startup

Applications

• Optical transceivers
• Base station power amplifiers
• Process control PLC input/output cards
• Industrial automation systems
• Data acquisition systems

Procurement Notes

Verify the specific grade (A or B) required for your application's linearity and error tolerances, as specifications differ between grades. Confirm the package type matches your PCB footprint; the 'RU' suffix indicates a 20-lead TSSOP package. Ensure the 'REEL7' designation aligns with your automated assembly equipment requirements for tape-and-reel quantities. Cross-reference the datasheet revision (Rev. C) for any updates to timing or electrical characteristics compared to older versions.

Selection Notes

Select the A Grade variant if tighter integral nonlinearity (±1.8 LSB) and lower offset drift are critical for system precision. Choose the B Grade if cost optimization is prioritized while maintaining standard industrial accuracy (±3 LSB INL). Consider the GAIN pin connection to determine if the application requires a 0–VREF or 0–2×VREF output swing. Verify that the load impedance and capacitive load requirements fall within the stability limits specified in the AC characteristics table.

Part Context

The AD5675 belongs to the nanoDAC+ family of octal DACs. It shares functional similarities with the AD5676 but differs in its serial interface; the AD5676 uses SPI, whereas the AD5675 utilizes an I2C-compatible interface. This distinction affects the microprocessor interfacing logic and address configuration. The device is part of a broader portfolio that includes 12-bit variants like the AD5671R, offering different resolution and performance trade-offs for multi-channel applications.

Replacement Considerations

For direct interface replacement, consider the AD5675R which may offer minor packaging or grading variations. For SPI-based designs requiring similar functionality, the AD5676 series serves as a functional equivalent but requires hardware changes to the serial bus. No other I2C octal 16-bit DACs are listed as direct substitutes in the provided documentation.