AD5721BCPZ-RL7

Overview

The AD5721BCPZ-RL7 is a single-channel, 12-bit serial input voltage output digital-to-analog converter (DAC) from Analog Devices. It operates from single supply voltages 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 output amplifier and reference buffer, supporting eight software-programmable output ranges including unipolar and bipolar configurations with 5% overrange capability. Key electrical specifications include a maximum integral nonlinearity (INL) of ±0.5 LSB, a typical settling time of 7.5 μs, and low noise performance of 35 nV/√Hz. It utilizes a DSP/microcontroller-compatible serial interface operating at clock rates up to 50 MHz.

Feature Summary

• 12-bit resolution with guaranteed monotonicity and ±0.5 LSB maximum INL/DNL
• Eight software-selectable 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
• Integrated output amplifier and reference buffer for simplified system design
• Asynchronous updating via LDAC and asynchronous RESET to zero scale/midscale

Applications

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

Procurement Notes

Verify the specific package type upon ordering, as the AD5721 is available in both 16-lead LFCSP and 16-lead TSSOP packages. Confirm that the required output range and supply voltage configuration align with the device's operational limits. Ensure external reference voltage requirements are met if utilizing the external reference mode, as specified performance depends on VREFIN being within the 2 V to 3 V range.

Selection Notes

Select the AD5721BCPZ-RL7 when a single-channel 12-bit DAC with wide supply voltage flexibility is required. This component is suitable for applications needing programmable output spans up to ±10 V or 0 V to +20 V. Consider the 16-lead LFCSP package for compact surface-mount designs requiring optimal thermal performance via the exposed pad. Verify compatibility with the host microcontroller's serial interface standards, as the device supports clock rates up to 50 MHz.

Part Context

The AD5721BCPZ-RL7 belongs to the AD5761/AD5721 family of multi-range DACs. It shares pinout and functional architecture with the 16-bit AD5761 but offers 12-bit resolution. The 'B' grade indicates tighter linearity specifications compared to lower grades. The 'CPZ' suffix denotes the 16-lead LFCSP package, while 'RL7' indicates tape and reel packaging. This part is designed for industrial environments with an operating temperature range of −40°C to +125°C.

Replacement Considerations

The AD5761BCPZ-RL7 is a pin-compatible 16-bit version of this device. For lower resolution needs, verify if other 12-bit DACs from Analog Devices meet the specific range and accuracy requirements. Ensure any replacement maintains the same serial interface timing and supply voltage capabilities.