AD7898ARZ-10REEL

Overview

The AD7898ARZ-10REEL is a 12-bit successive approximation analog-to-digital converter housed in an 8-lead SOIC package. It operates from a single 5 V supply and supports a maximum throughput rate of 220 kSPS. The device features an on-chip track/hold amplifier and accepts an analog input voltage range of ±10 V. It utilizes a flexible high-speed serial interface compatible with both 3 V and 5 V logic systems via the VDRIVE pin. Power consumption is limited to a maximum of 22.5 mW during operation, with a dedicated power-down mode reducing current draw significantly.

Feature Summary

• Integrated signal scaling allows direct interfacing with ±10 V analog signals while operating from a single 5 V supply.
• Dual-mode serial interface supports internal clocking for simplified control or external clocking for data access during conversion.
• VDRIVE pin enables the digital interface to operate independently at either 3 V or 5 V logic levels.

Applications

• Battery-powered equipment requiring low power consumption
• Portable or hand-held instrumentation applications
• Data acquisition systems utilizing microcontrollers

Procurement Notes

Verify that the specific ordering suffix matches the required packaging format, as the REEL designation indicates tape and reel configuration. Confirm RoHS compliance status corresponding to the Z suffix. Ensure the input range variant aligns with system requirements, as the -10 suffix specifies the ±10 V input capability. Cross-reference the temperature grade against environmental constraints.

Selection Notes

Select this component when a compact 8-lead solution is required for 12-bit resolution at high sampling rates. The AD7898-10 variant is appropriate for applications involving larger amplitude analog inputs without external attenuation. Consider the VDRIVE flexibility if the host processor operates at a different voltage level than the analog supply. Evaluate the power-down mode benefits for battery-operated designs.

Part Context

This part belongs to the AD7898 family of fast serial ADCs manufactured by Analog Devices. The series includes variants with different input ranges, such as the AD7898-3 for ±2.5 V inputs. The ARZ-10REEL designation specifically identifies the lead-free, industrial temperature grade version packaged in reels for automated assembly processes.

Replacement Considerations

The AD7898AR-10REEL serves as a non-RoHS compliant alternative within the same package and specification set. Designers should verify pin compatibility and electrical parameter equivalence before substituting parts from different manufacturers or families.