AD5761ACPZ-RL7

Overview

The AD5761ACPZ-RL7 is a single-channel, 16-bit serial input voltage output digital-to-analog converter (DAC) from Analog Devices. It operates on single supplies of +4.75 V to +30 V or dual supplies ranging from −16.5 V to 0 V for VSS and +4.75 V to +16.5 V for VDD. The device features an integrated output amplifier and reference buffer, supporting eight software-programmable output ranges including unipolar (0 V to +20 V) and bipolar (±10 V) spans with 5% overrange capability. Key electrical specifications include a maximum integral nonlinearity (INL) of ±8 LSB for Grade A, a typical settling time of 9 μs for a 20 V step, 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

• 16-bit resolution with guaranteed monotonicity (±1 LSB max DNL) and ±8 LSB max INL (Grade A).
• Eight software-selectable 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; supports external reference voltages between 2 V and 3 V.
• Serial interface compatible with DSP and microcontrollers, featuring asynchronous updating via LDAC and RESET functions.

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) and package variant (LFCSP vs. TSSOP) against the datasheet ordering guide, as the base model number may correspond to multiple configurations. Confirm that the external reference voltage source meets the 2 V to 3 V specification range for optimal performance. Ensure power supply decoupling and thermal pad connection adhere to the layout guidelines in the application information section.

Selection Notes

Select this component when a single-channel, high-precision 16-bit DAC with wide supply voltage flexibility is required. The AD5761 is suitable for applications needing multiple output voltage spans without external scaling circuitry. Compare against the AD5721 if 12-bit resolution is sufficient, or the AD5761R if an internal precision reference is preferred over an external one. Verify that the 50 MHz serial clock speed and double buffering capabilities meet the system update rate requirements.

Part Context

The AD5761 belongs to the AD5761/AD5721 family of multi-range, bipolar/unipolar voltage output DACs. It is pin-compatible with the 12-bit AD5721 and the internal-reference versions AD5761R/AD5721R. The 'ACPZ' suffix indicates the Grade A temperature range and LFCSP package, while '-RL7' denotes the tape and reel packaging format. This part serves as a universal solution for industrial analog output stages requiring high accuracy and flexible supply options.

Replacement Considerations

The AD5761BCPZ-RL7 offers the same functionality but with Grade B accuracy (±2 LSB INL). The AD5761RACPZ-RL7 includes an internal low-drift 2.5 V reference, eliminating the need for an external reference component. For lower resolution needs, the AD5721ACPZ-RL7 provides 12-bit performance in the same package.