AD7895BRZ-2

Overview

The AD7895BRZ-2 is a 12-bit successive approximation analog-to-digital converter (ADC) from Analog Devices, housed in an 8-pin SOIC package. It operates on a single +5 V supply with a maximum power dissipation of 20 mW. The device features a serial interface and accepts a unipolar analog input range of 0 V to +2.5 V. Key electrical specifications include a conversion time of 3.8 μs in high sampling mode, a signal-to-noise ratio of 70 dB, and linearity errors of ±1 LSB for both differential and integral nonlinearity. It functions within a temperature range of -40 °C to +85 °C.

Feature Summary

• Integrates a track/hold amplifier, internal clock, and serial interface logic within an 8-pin package.
• Supports automatic power-down mode after conversion completion to minimize energy consumption.
• Provides a two-wire serial interface utilizing separate clock and data lines for microcontroller connectivity.

Applications

• Battery-powered portable instrumentation systems
• Industrial process control data acquisition
• Portable medical devices requiring low power ADCs

Procurement Notes

Verify the specific suffix 'BRZ' against the manufacturer's current ordering guide to confirm the exact package type and lead-free status. Ensure the required input voltage range matches the AD7895-2 variant specifications before finalizing procurement orders.

Selection Notes

Select this component when a single-ended 0 V to +2.5 V input range is required alongside strict space constraints due to the 8-pin form factor. Consider the auto sleep mode if the application involves intermittent sampling to maximize battery life efficiency.

Part Context

This part belongs to the AD7895 family of fast 12-bit ADCs. It serves as a cost-effective alternative to higher pin-count solutions by integrating essential peripheral functions directly onto the silicon die, reducing external component count and board area requirements.

Replacement Considerations

The AD7895AN-2 and AD7895AR-2 are pin-compatible alternatives within the same series offering identical electrical performance but differing in package style or temperature grade variations.