AD7893BR-10REEL7

Overview

The AD7893BR-10REEL7 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 and features an internal track/hold amplifier with a conversion time of 6 μs. The device supports a bipolar input voltage range of ±10 V and utilizes a high-speed two-wire serial interface for data output. Key electrical specifications include a typical power dissipation of 25 mW, a signal-to-noise ratio of 72 dB, and a relative accuracy of ±1/2 LSB. The operating temperature range extends from -40 °C to +85 °C.

Feature Summary

• 12-bit resolution with 6 μs conversion time and 117 kHz throughput rate
• Bipolar ±10 V analog input range with on-chip signal scaling
• High-speed serial interface requiring only SCLK and SDATA lines
• Low power consumption of 25 mW typical at +5 V supply

Applications

• Industrial process control systems
• Data acquisition modules
• Portable instrumentation
• Battery-powered measurement devices

Procurement Notes

Verify the specific suffix 'REEL7' against manufacturer documentation to confirm tape-and-reel packaging quantities and handling requirements. Ensure the ordering code matches the BR grade for ±1/2 LSB linearity and 72 dB SNR performance within the commercial temperature range.

Selection Notes

Select this component when a single-supply 12-bit ADC with a wide ±10 V input range is required. The BR variant offers tighter linearity specifications compared to the BN or AR grades. Consider the external reference requirement, as the part requires a stable +2.5 V reference source connected to the REF IN pin for optimal performance.

Part Context

This part belongs to the AD7893 family of fast, low-power serial ADCs. The 'BR' designation indicates the B-grade version with improved linearity (±1/2 LSB) and higher SNR (72 dB) compared to the A-grade. The '10' suffix specifies the ±10 V input range variant, while 'REEL7' denotes the reel packaging format.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should evaluate other members of the AD7893 family or newer Analog Devices SAR ADCs based on pin compatibility and performance requirements.