AD7896JRZ

Overview

The AD7896JRZ is a 12-bit successive approximation register (SAR) analog-to-digital converter manufactured by Analog Devices Inc. It operates from a single supply voltage ranging from 2.7 V to 5.5 V, with both analog and digital supplies sharing this range. The device features a throughput rate of 100 kHz and an 8 µs conversion time in high sampling mode. It utilizes a serial interface for data output and includes an on-chip track-and-hold amplifier. The component is housed in an 8-lead SOIC package and supports a commercial operating temperature range of 0°C to +70°C.

Feature Summary

• Integrates a 12-bit SAR ADC, track-and-hold amplifier, and clock oscillator within an 8-lead package.
• Operates from a single 2.7 V to 5.5 V supply, utilizing VDD as the internal reference.
• Features a high-speed 2-wire serial interface for easy microcontroller connection.
• Includes an automatic power-down mode that activates after conversion completion.

Applications

• Battery-powered portable instrumentation
• Industrial process control systems
• Data acquisition subsystems

Procurement Notes

Verify the specific suffix 'JRZ' against current manufacturer documentation to confirm package type and temperature grade. Confirm end-of-life status or obsolescence notices prior to procurement planning. Ensure compatibility with existing PCB footprints for the 8-lead SOIC configuration.

Selection Notes

Select this component when a compact 12-bit resolution is required with low power consumption. The single-supply operation simplifies power design compared to dual-supply alternatives. Consider the 100 kHz throughput limit and serial interface timing constraints when designing the system clock architecture.

Part Context

The AD7896 belongs to a family of fast, low-power 12-bit ADCs designed for space-constrained applications. The JRZ designation typically indicates the commercial temperature grade variant housed in an 8-lead Small Outline Integrated Circuit (SOIC) package. This part integrates functions that previously required multiple discrete components.

Replacement Considerations

Direct replacement options include other variants within the AD7896 family, such as the AD7896ANZ or AD7896ARZ, which may offer different temperature ranges or packaging styles while maintaining functional compatibility.