AD5761ARUZ

Overview

The AD5761ARUZ is a single-channel, 16-bit serial input voltage output digital-to-analog converter (DAC) from Analog Devices. It operates from single supplies of +4.75 V to +30 V or dual supplies from −16.5 V to 0 V (VSS) and +4.75 V to +16.5 V (VDD). The device features an integrated output amplifier and reference buffer, supporting eight software-programmable output ranges including unipolar (0 V to +5 V/+10 V/+16 V/+20 V) and bipolar (±3 V/±5 V/±10 V, −2.5 V to +7.5 V) spans with 5% overrange capability. 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 7.5 μs. It utilizes a DSP/microcontroller-compatible serial interface operating at clock rates up to 50 MHz.

Feature Summary

• 16-bit resolution with guaranteed monotonicity (±1 LSB max DNL) and ±8 LSB max INL (A Grade)
• Eight software-programmable output ranges: 0 V to +5 V, +10 V, +16 V, +20 V, ±3 V, ±5 V, ±10 V, and −2.5 V to +7.5 V
• Integrated output amplifier and reference buffer for universal application support
• Serial interface compatible with DSP and microcontrollers, supporting asynchronous updating via LDAC

Applications

• Industrial automation systems
• Instrumentation and data acquisition
• Open-/closed-loop servo control and process control
• Programmable logic controllers (PLCs)

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and temperature range. Confirm that external reference requirements are met, as this variant does not include an internal precision reference. Ensure supply voltages align with the specified operational limits for the selected output range.

Selection Notes

Select the AD5761ARUZ when a 16-bit resolution with ±8 LSB INL accuracy is sufficient for the application. This version requires an external reference voltage source, unlike the AD5761R series which integrates a low-drift reference. Consider the power supply constraints, as bipolar ranges require negative supply rails down to −16.5 V.

Part Context

The AD5761 is part of the AD5761/AD5721 family of multi-range voltage output DACs. It is pin-compatible with the 12-bit AD5721 and the internal-reference AD5761R variants. The 'A' designation indicates the accuracy grade (±8 LSB INL), while 'U' denotes the 16-lead TSSOP package. It serves as a general-purpose solution for applications requiring flexible output voltage spans without the cost of an integrated reference.

Replacement Considerations

The AD5761RBRUZ offers similar functionality but includes an integrated 2 ppm/°C reference and B-grade accuracy (±2 LSB INL). The AD5721ARUZ provides 12-bit resolution with identical packaging and interface characteristics. Verify if the external reference requirement can be replaced by an internal reference variant to simplify board design.