AD7884BP

Overview

The AD7884BP is a 16-bit monolithic analog-to-digital converter featuring an internal sample-and-hold amplifier and a conversion time of 5.3 µs. It achieves a maximum throughput rate of 166 kSPS using a two-pass flash architecture. The device supports ±5 V and ±3 V input ranges and operates from ±5 V supplies with a 3 V reference. It utilizes a 16-bit parallel data output structure controlled by CS and RD inputs, providing results in two's complement code. The component is housed in a 44-lead Plastic Leaded Chip Carrier (PLCC) package.

Feature Summary

• Monolithic construction utilizing a two-pass flash architecture for high-speed operation
• Internal sample-and-hold amplifier with asynchronous CONVST initiation
• Integrated on-chip 16-bit accurate DAC for error correction
• Supports selectable ±5 V and ±3 V analog input ranges

Applications

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

Procurement Notes

Verify the specific suffix BP indicates the 44-lead PLCC package variant when sourcing. Confirm that the ordering part number matches the required temperature range and linearity specifications defined in the manufacturer's guide. Ensure compatibility with the required dual ±5 V power supply configuration and 3 V reference voltage setup before integration.

Selection Notes

Select this model for applications requiring 16-bit resolution at speeds up to 166 kSPS. The device necessitates a dual ±5 V power supply and a precise 3 V reference source. Consider the 44-lead PLCC package constraints for PCB layout. Evaluate system noise requirements against the typical 120 µV rms noise specification to ensure adequate signal integrity for the target application bandwidth.

Part Context

The AD7884BP belongs to the AD7884/AD7885 family of LC2MOS high-speed sampling ADCs. While the AD7885 offers an 8-bit byte-read structure, the AD7884 provides a full 16-bit parallel interface. This specific part represents the commercial grade version with enhanced linearity specifications compared to standard variants, designed for precision data acquisition tasks.

Replacement Considerations

The AD7885ABP serves as a functional equivalent within the same family, offering identical electrical specifications but utilizing an 8-bit byte-read structure instead of the 16-bit parallel interface found in the AD7884BP.