AD7893BR-10REEL

Overview

The AD7893BR-10REEL is a 12-bit successive approximation analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It operates from a single +5 V supply and features an on-chip track/hold amplifier, internal clock, and high-speed serial interface. The device accepts a bipolar analog input range of ±10 V and consumes typically 25 mW. It provides a signal-to-noise ratio of 72 dB with a conversion time of 6 μs and a maximum throughput rate of 117 kHz. The component is housed in an 8-pin SOIC package and supports an operating temperature range from -40 °C to +85 °C.

Feature Summary

• Integrates a fast 12-bit ADC, track/hold amplifier, and control logic within a compact 8-pin package for space-efficient designs.
• Operates from a single +5 V supply with low power consumption, making it suitable for battery-powered applications.
• Features a high-speed two-wire serial interface consisting of SCLK and SDATA lines for straightforward microcontroller connectivity.

Applications

• Battery-powered portable instrumentation systems
• Industrial data acquisition modules requiring single-supply operation
• Process control systems utilizing bipolar voltage inputs

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and temperature grade. Ensure that the REEL designation matches the required tape-and-reel specifications for automated assembly processes. Cross-reference the part number with official distributor catalogs to validate availability status and compliance certifications prior to procurement.

Selection Notes

Select this component when a 12-bit resolution and ±10 V input range are required within a minimal footprint. The BR variant offers improved linearity compared to the standard AR version. Consider the 117 kHz throughput limit and ensure the system timing allows for the necessary 600 ns acquisition window between conversions to maintain specified accuracy.

Part Context

This component belongs to the AD7893 family of LC2MOS 12-bit serial ADCs. The BR suffix indicates a specific binning for relative accuracy and SNR performance within the commercial temperature range. It shares the same functional architecture as the AN and AR variants but differs in electrical precision specifications and packaging options.

Replacement Considerations

AD7893ARZ-10REEL

FAQ

What is the output coding format for the AD7893BR-10?

The AD7893BR-10 uses Two's Complement binary output coding to represent bipolar input signals.

How is the conversion process initiated?

Conversion is initiated by applying a rising edge pulse to the CONVST pin, which triggers the track/hold amplifier to enter hold mode and starts the internal conversion sequence.

What is the maximum serial clock frequency allowed?

The maximum serial clock frequency is 8.33 MHz, which allows for the full 16-bit data word to be read out efficiently.