AD5760ACPZ

Overview

The AD5760ACPZ is a true 16-bit, unbuffered voltage output digital-to-analog converter (DAC) from Analog Devices. It operates on bipolar supplies up to ±16.5 V and accepts reference inputs ranging from 5 V to VDD−2.5 V and VSS+2.5 V to 0 V. The device guarantees monotonicity with a maximum integral nonlinearity (INL) of ±0.5 LSB for the B grade and ±2 LSB for the A grade. Key electrical specifications include an output noise spectral density of 8 nV/√Hz, a settling time of 2.5 µs for a 10 V step, and a gain error temperature coefficient of ±0.018 ppm/°C. It features a 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards, operating at clock rates up to 35 MHz.

Feature Summary

• True 16-bit resolution with ±0.5 LSB INL (B Grade) and guaranteed monotonicity.
• Ultra-low noise performance with 8 nV/√Hz output noise spectral density.
• Wide supply range supporting up to ±16.5 V analog supplies.
• Integrated precision reference buffers and power-on reset circuitry ensuring 0 V startup.

Applications

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

Procurement Notes

Verify the specific grade suffix (A or B) when ordering, as the base model number does not distinguish between the ±2 LSB and ±0.5 LSB INL variants. Confirm the package type is LFCSP-24 (4 mm × 5 mm). Ensure compatibility with the required bipolar supply voltages and reference input ranges during procurement planning.

Selection Notes

Select the AD5760ACPZ-B for applications requiring high accuracy with ±0.5 LSB INL. Choose the AD5760ACPZ-A if cost sensitivity allows for ±2 LSB INL. Consider external buffering (e.g., ADA4898-1) if low output impedance is required, as the DAC output is unbuffered. Verify that the system logic levels are compatible with the IOVCC pin range of 1.71 V to 5.5 V.

Part Context

The AD5760 belongs to Analog Devices' high-performance DAC portfolio, positioned alongside the AD5780 (18-bit) and AD5790/AD5791 (20-bit) series. It serves as a specialized solution for applications demanding exceptional linearity stability and low noise without the complexity of higher-resolution converters. The device is designed for industrial and scientific environments requiring operation across the −40°C to +125°C temperature range.

Replacement Considerations

Public confirmed substitutes include the AD5781 (18-bit, 0.5 LSB INL) for higher resolution needs, or the AD5541A/AD5542A (16-bit, 5 V supply) for single-supply applications. Note that these alternatives differ in supply voltage requirements, resolution, and pinout configurations.

FAQ

What is the difference between the AD5760ACPZ-A and AD5760ACPZ-B?

The primary difference is the Integral Nonlinearity (INL) specification. The AD5760ACPZ-B guarantees a maximum INL of ±0.5 LSB, while the AD5760ACPZ-A guarantees a maximum INL of ±2 LSB. Both share the same 16-bit resolution and other electrical characteristics.

Is the AD5760 output buffered?

No, the AD5760 is an unbuffered voltage output DAC. It provides a high-impedance output (DC output impedance of 3.4 kΩ in normal mode). An external operational amplifier buffer is required for driving low-impedance loads.

How does the Power-On Reset feature function?

The device incorporates a power-on reset circuit that ensures the DAC output powers up to 0 V in a known output impedance state. The output remains in this state until a valid write operation is performed on the device.