AD7895ARZ-2REEL

Overview

The AD7895ARZ-2REEL is a 12-bit successive approximation analog-to-digital converter (ADC) housed in an 8-pin SOIC package. It operates from a single +5 V supply and features a serial interface with a maximum throughput rate of 192 kHz. The device includes an on-chip track/hold amplifier and accepts a unipolar input voltage range of 0 V to +2.5 V. Key electrical specifications include a conversion time of 3.8 μs, a signal-to-noise ratio of 70 dB, and a maximum power dissipation of 20 mW. Differential nonlinearity is specified at ±1 LSB, while gain error is ±3 LSB.

Feature Summary

• Single-supply operation with low power consumption suitable for battery-powered applications
• Integrated high-speed serial interface requiring minimal external logic connections
• On-chip track/hold amplifier ensures accurate data acquisition at high sampling rates

Applications

• Battery-powered portable instrumentation systems
• Industrial process control data acquisition loops
• Medical equipment requiring isolated signal digitization

Procurement Notes

Verify the specific suffix REEL indicates tape-and-reel packaging when sourcing components. Confirm that the -2 designation corresponds to the required 0 V to +2.5 V unipolar input range for your circuit design. Ensure the ordering documentation matches the exact Analog Devices part number to avoid functional mismatches with other input range variants.

Selection Notes

Select this component when a compact 8-pin solution is required for 12-bit resolution tasks. The AD7895ARZ-2REEL is appropriate for designs needing a single 5 V supply and a simple serial communication protocol. Consider the 192 kHz throughput limit and the specific 0 V to +2.5 V input window during system architecture planning.

Part Context

This component belongs to the AD7895 family of fast 12-bit ADCs manufactured by Analog Devices. The family shares identical core architecture but varies by input voltage range and package type. The ARZ-2 variant specifically denotes the surface-mount SOIC package with the unipolar input configuration.

Replacement Considerations

The AD7894 serves as a 14-bit pin-compatible upgrade within the same package footprint. Other variants such as the AD7895AR-10 or AD7895AR-3 offer different input ranges but maintain the same physical interface.