AD5761RARUZ-RL7

Overview

The AD5761RARUZ-RL7 is a single-channel, 16-bit serial input voltage output digital-to-analog converter (DAC) from Analog Devices. It operates on a single supply of +4.75 V to +30 V or dual supplies ranging from −16.5 V to 0 V and +4.75 V to +16.5 V. The device features an integrated low-drift 2.5 V reference with ±2 ppm/°C typical drift and supports eight software-programmable output ranges including unipolar and bipolar spans. Key electrical specifications include a maximum integral nonlinearity (INL) of ±8 LSB for the A grade, ±1 LSB differential nonlinearity (DNL), and a typical settling time of 9 μs for a 20 V step. It utilizes a DSP-compatible serial interface operating up to 50 MHz.

Feature Summary

• Integrated low-drift 2.5 V reference with ±2 ppm/°C typical temperature coefficient
• Eight software-programmable output ranges: 0 V to +5 V, 0 V to +10 V, 0 V to +16 V, 0 V to +20 V, ±3 V, ±5 V, ±10 V, and −2.5 V to +7.5 V
• A Grade accuracy with ±8 LSB maximum INL and ±1 LSB maximum DNL
• Typical settling time of 9 μs for a 20 V step to 1 LSB at 16-bit resolution

Applications

• Industrial automation systems
• Instrumentation and data acquisition
• Open-/closed-loop servo control
• Process control applications
• Programmable logic controllers

Procurement Notes

Verify the specific grade (A or B) required for your application, as the datasheet specifies different INL tolerances. Confirm that the TSSOP-16 package with tape-and-reel packaging matches your assembly line requirements. Ensure power supply rails are within the specified limits (+4.75 V to +30 V for VDD, −16.5 V to 0 V for VSS) to maintain guaranteed performance over the industrial temperature range of −40°C to +125°C.

Selection Notes

Select the AD5761RARUZ-RL7 when high precision and wide dynamic range are necessary. The A grade variant offers ±8 LSB INL, suitable for general-purpose applications, while the B grade provides tighter ±2 LSB INL for higher accuracy needs. Consider the 9 μs settling time for speed requirements and ensure the load impedance meets the stability criteria (1 kΩ or 2 kΩ depending on range). The integrated reference simplifies design but requires a 10 nF capacitor for optimal noise performance.

Part Context

This component belongs to the AD5761R/AD5721R family of multi-range DACs. The 'R' suffix indicates the inclusion of an integrated low-drift reference, distinguishing it from the standard AD5761 which requires an external reference. The 'A' denotes the accuracy grade, and 'RL7' signifies the tape-and-reel packaging format. It shares functional similarities with the 12-bit AD5721R but offers superior resolution and specific grading options.

Replacement Considerations

For direct pin-compatible replacements with similar functionality, consider the AD5761RBRUZ (B grade, tube packaging) or the AD5761ARUZ (A grade, tube packaging). If an external reference is acceptable, the standard AD5761 series may be used. For lower resolution needs, the AD5721R series is compatible but offers only 12-bit resolution.