AD5780BCPZ-REEL7

Overview

The AD5780BCPZ-REEL7 is a true 18-bit, unbuffered voltage output digital-to-analog converter (DAC) from Analog Devices. It features ±1 LSB integral nonlinearity error and operates with bipolar supplies up to ±16.5 V. The device includes integrated precision reference buffers, eliminating the need for external buffering. Key electrical specifications include an 8 nV/√Hz output noise spectral density, a gain error temperature coefficient of ±0.018 ppm/°C, and a settling time of 2.5 µs. It utilizes a versatile 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards, supporting clock rates up to 35 MHz.

Feature Summary

• True 18-bit resolution with ±1 LSB INL accuracy
• Integrated precision reference buffers for system readiness
• Low noise performance: 8 nV/√Hz spectral density
• Wide supply range: ±7.5 V to ±16.5 V
• Industrial temperature range: −40°C to +125°C

Applications

• Medical instrumentation
• Test and measurement equipment
• Industrial control systems
• Scientific and aerospace instrumentation
• Data acquisition systems

Procurement Notes

Verify the specific grade suffix 'B' against the datasheet Ordering Guide to confirm the INL specification (±1 LSB vs ±2 LSB). Ensure the reel packaging quantity matches the required production volume. Confirm that the LFCSP package thermal requirements are met by the target PCB design, as thermal dissipation depends on copper plane area.

Selection Notes

Select this component when high linearity and low drift are critical. The B-grade version guarantees ±1 LSB INL across the specified temperature range. Consider the external buffer options like ADA4898-1 if lower output impedance or higher drive capability is needed beyond the DAC's native output. Verify that the digital interface logic levels (IOVCC) match the host controller.

Part Context

The AD5780 belongs to the AD5780 family of high-precision DACs. It is often paired with companion products such as the AD8675 output amplifier buffer or external references like the ADR445. Related devices in the portfolio include the 20-bit AD5790 and the 18-bit AD5781, offering different accuracy and bit-depth trade-offs for similar applications.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.