AD7884BPZ

Analog To Digital Converters (ADC) Overview

The AD7884BPZ is a 16-bit monolithic analog-to-digital converter utilizing LC2MOS technology and a two-pass flash architecture. It features an internal sample-and-hold amplifier, a conversion time of 5.3 µs, and a maximum throughput rate of 166 kSPS. The device operates from ±5 V power supplies with a 3 V reference input. It provides selectable analog input ranges of ±5 V or ±3 V and outputs data in twos complement code via a 16-bit parallel interface. The component is housed in a 44-lead Plastic Leaded Chip Carrier (PLCC) package and supports an operating temperature range from -40 °C to +85 °C.

Analog To Digital Converters (ADC) Feature Summary

• Monolithic construction integrating a 16-bit accurate DAC for error correction
• Internal oscillator controls the conversion process without external clocking
• Two-pass flash architecture enables high-speed sampling and low latency
• Selectable analog input ranges for flexible signal conditioning

Analog To Digital Converters (ADC) Applications

• Automatic Test Equipment
• Medical Instrumentation
• Industrial Control Systems
• Data Acquisition Systems
• Robotics

Analog To Digital Converters (ADC) Procurement Notes

Verify the ordering suffix BPZ corresponds to the 44-lead PLCC package and the B linearity grade. Confirm the temperature range matches the specified -40 °C to +85 °C industrial rating. Ensure the datasheet revision aligns with the required specifications for integral nonlinearity and gain error tolerances before finalizing procurement.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 16-bit resolution with high throughput is required. The AD7884 offers a parallel interface suitable for direct microprocessor connection. Consider the AD7885 if a byte-read structure is preferred over the full 16-bit parallel word output. Verify that the system can accommodate the dual ±5 V supply requirement and the specific 3 V reference voltage.

Analog To Digital Converters (ADC) Part Context

The AD7884 belongs to Analog Devices' LC2MOS family of high-speed sampling ADCs. It shares architectural similarities with the AD7885, differing primarily in the digital output interface configuration. The device utilizes a proprietary two-pass flash technique to achieve 16-bit accuracy at speeds up to 166 kSPS, distinguishing it from standard successive approximation register converters.

Analog To Digital Converters (ADC) Replacement Considerations

The AD7885ABP serves as a functional substitute with identical electrical specifications but utilizes an 8-bit byte-read interface instead of the 16-bit parallel output. Designers must adjust the software driver and hardware connections to accommodate the sequential byte reading mode when replacing the AD7884BPZ with the AD7885ABP.