AD7895BRZ-10REEL

Overview

The AD7895BRZ-10REEL 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 high-speed serial interface with a conversion time of 3.8 μs. The device includes an on-chip track/hold amplifier and accepts bipolar input signals within the ±10 V range. Key electrical specifications include a signal-to-noise ratio of 70 dB, differential nonlinearity of ±1 LSB, and integral nonlinearity of ±1 LSB. Maximum power dissipation is 20 mW, with a typical operating current of 4 mA.

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 to reduce consumption during idle periods

Applications

• Battery-powered portable instrumentation systems
• Industrial process control data acquisition
• Medical equipment requiring low-power ADC solutions

Procurement Notes

Verify that the specific suffix 'REEL' indicates tape-and-reel packaging rather than tube packaging when sourcing components. Confirm the '-10' designation corresponds to the required ±10 V input voltage range for your application design. Ensure compatibility with the external +2.5 V reference voltage requirement specified in the datasheet.

Selection Notes

Select this component if a single-channel, 12-bit resolution is sufficient for the system requirements. Consider the ±10 V input range capability which eliminates the need for external scaling resistors for standard industrial signals. Evaluate the 3.8 μs conversion speed against the maximum throughput rate of 192 kHz to ensure it meets the sampling frequency needs of the target application.

Part Context

This part belongs to the AD7895 family of fast, low-power 12-bit ADCs manufactured by Analog Devices. The BRZ variant specifically denotes the commercial temperature range (-40°C to +85°C) and lead-free construction. It serves as a compact solution for applications where space constraints and power efficiency are critical design factors.

Replacement Considerations

The AD7894 is a 14-bit pin-compatible upgrade option available within the same product family. Verify pinout compatibility before substitution, as higher-resolution variants may have different timing or power characteristics.