AD7894ARZ-3REEL

Analog To Digital Converters (ADC) Overview

The AD7894ARZ-3REEL is a 14-bit successive approximation analog-to-digital converter (ADC) housed in an 8-lead SOIC package. It operates from a single +5 V supply and features a serial interface with a maximum clock frequency of 16 MHz. The device includes an on-chip track/hold amplifier and accepts a bipolar input voltage range of -2.5 V to +2.5 V. Typical power consumption is 20 mW, with a maximum conversion time of 5 µs in high sampling mode. It provides a signal-to-noise ratio of 77 dB minimum and supports throughput rates up to 160 kHz.

Analog To Digital Converters (ADC) Feature Summary

• Integrated on-chip track/hold amplifier for accurate signal acquisition
• High-speed two-wire serial interface for data output
• Automatic power-down mode for low-power applications
• Single +5 V supply operation

Analog To Digital Converters (ADC) Applications

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

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix REEL indicates tape and reel packaging when sourcing this component. Confirm that the AD7894-3 designation matches the required -2.5 V to +2.5 V input range for your application. Ensure the external reference voltage connected to REF IN is within the specified 2.375 V to 2.625 V range to maintain accuracy specifications.

Analog To Digital Converters (ADC) Selection Notes

Select this part if a 14-bit resolution and bipolar input range are required in a compact 8-lead package. Compare against the AD7894-10 for wider input ranges or the AD7894-2 for unipolar inputs. Consider the 160 kHz maximum throughput rate and ensure the system timing allows for the necessary read and settling periods between conversions.

Analog To Digital Converters (ADC) Part Context

This component belongs to the AD7894 family of fast, 14-bit ADCs from Analog Devices. It serves as a pin-compatible upgrade to the 12-bit AD7895. The family includes variants with different input ranges (-10 V, -2.5 V, and 0 V to +2.5 V) and temperature grades, all sharing the same core architecture and 8-lead SOIC form factor.

Analog To Digital Converters (ADC) Replacement Considerations

The AD7894BRZ-3 is a verified alternative within the same series offering improved linearity specifications. Other family members like the AD7894ARZ-10 share the same package but require different input scaling.