AD774BKNZ

Overview

The AD774BKNZ is a 12-bit successive approximation register (SAR) analog-to-digital converter manufactured by Analog Devices Inc. It features a parallel interface and supports single-ended inputs with a sampling rate of 125 kS/s. The device operates on dual power supplies, requiring an analog supply between 4.5 V and 5.5 V and a digital supply between 11.4 V and 16.5 V. It integrates both internal and external reference capabilities with a 10 V reference voltage. Key performance metrics include an integral nonlinearity (INL) of +/- 0.5 LSB and a maximum power dissipation of 825 mW. The component is housed in a 28-pin PDIP package and functions within a commercial temperature range of 0°C to +70°C.

Feature Summary

• 12-bit resolution with SAR architecture and 125 kS/s sampling rate
• Dual power supply operation: 4.5–5.5 V analog and 11.4–16.5 V digital
• Integrated internal/external reference support with 10 V reference voltage
• High accuracy with +/- 0.5 LSB INL specification

Applications

• Industrial process control systems requiring high-speed data acquisition
• Test and measurement equipment utilizing parallel ADC interfaces
• Data logging applications with single-ended input requirements

Procurement Notes

Verify the specific suffix KNZ indicates the PDIP-28 through-hole package variant when sourcing. Confirm RoHS compliance status via the manufacturer's official documentation prior to integration. Check for any product change notices (PCN) regarding assembly or fabrication site updates that may affect long-term availability or pin compatibility.

Selection Notes

Select this component when a 12-bit SAR ADC with a parallel interface is required for single-ended signals. Ensure the design accommodates the distinct analog (5 V) and digital (12–16.5 V) supply rails. Verify that the PCB layout supports the 28-PDIP footprint and that the thermal environment remains within the 0°C to +70°C operating range given the 825 mW power dissipation.

Part Context

The AD774BKNZ belongs to the AD774B series of high-speed, low-power 12-bit ADCs from Analog Devices. This series is designed for applications demanding moderate speed and high accuracy. The KNZ suffix specifically denotes the plastic dual in-line package (PDIP) version, distinguishing it from surface-mount variants like the BBRZ.

Replacement Considerations

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