AD5761BCPZ-RL7

Overview

The AD5761BCPZ-RL7 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 of −16.5 V to 0 V and +4.75 V to +16.5 V. The device features eight software-programmable output ranges including unipolar and bipolar options with 5% overrange capability. Key electrical specifications include a maximum integral nonlinearity (INL) of ±2 LSB for the B grade, differential nonlinearity (DNL) of ±1 LSB, and a typical settling time of 7.5 μs. It integrates reference buffers and offers low noise performance of 35 nV/√Hz.

Feature Summary

• 16-bit resolution with guaranteed monotonicity (±1 LSB max DNL) and ±2 LSB max INL (B Grade).
• Eight 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.
• Fast settling time of 7.5 μs typical for 10 V steps and 9 μs typical for 20 V steps to 1 LSB accuracy.
• Low glitch impulse of 1 nV-sec (0 V to 5 V range) and low output noise spectral density of 35 nV/√Hz.

Applications

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

Procurement Notes

Verify the specific package variant, as the AD5761 is available in both 16-lead TSSOP and 16-lead LFCSP packages. Ensure the external reference voltage connected to the VREFIN pin is within the specified 2 V to 3 V range for optimal performance. Confirm that the power supply voltages adhere to the absolute maximum ratings to prevent damage.

Selection Notes

Select the AD5761BCPZ-RL7 when bipolar or wide-range unipolar outputs are required, unlike the internal reference variants. Verify that the system can accommodate the necessary analog supply rails (up to +30 V and down to −16.5 V). Consider the thermal dissipation characteristics if operating at high temperatures or with significant load currents, noting the exposed pad requirement for thermal management in the LFCSP package.

Part Context

This component belongs to the AD5761/AD5721 family of nanoDACs. The AD5761 provides 16-bit resolution, while the AD5721 offers 12-bit resolution. Both share similar architectures but differ in precision grades and resolution. The 'RL7' suffix indicates reel packaging, and 'BCPZ' denotes the B-grade performance level in an LFCSP package.

Replacement Considerations

The AD5761RBCPZ-RL7 is a pin-compatible alternative featuring an integrated internal reference, eliminating the need for an external VREFIN source. For lower resolution requirements, the AD5721 series offers 12-bit performance with similar interface and supply characteristics.