AD7893ARZ-10REEL7

Overview

The AD7893ARZ-10REEL7 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 fast conversion time of 6 μs with a maximum throughput rate of 117 kHz. The device includes an on-chip track/hold amplifier, internal clock, and a high-speed two-wire serial interface. Designed for the AD7893-10 variant, it accepts bipolar analog input signals within a ±10 V range. Typical power consumption is 25 mW, making it suitable for low-power applications.

Feature Summary

• Integrated signal scaling circuitry enables direct acquisition of ±10 V analog inputs while operating from a single +5 V supply.
• On-chip track/hold amplifier ensures accurate digitization of full-scale sine waves up to the Nyquist rate.
• Two-wire serial interface simplifies connection to microcontrollers and DSP processors using standard SCLK and SDATA lines.

Applications

• Battery-powered portable instrumentation systems
• Industrial process control data acquisition
• Medical equipment signal conditioning

Procurement Notes

Verify that the specific ordering suffix corresponds to the required temperature range and packaging format. Confirm the part number indicates the AD7893-10 variant to ensure compatibility with ±10 V input requirements. Check datasheet specifications for absolute maximum ratings to prevent damage during integration.

Selection Notes

Select this component when a single-supply operation is required for bipolar voltage monitoring. Ensure the system can accommodate the 6 μs conversion latency and 1.5 μs acquisition time. Verify that the external reference voltage matches the specified +2.5 V requirement for optimal linearity.

Part Context

This component belongs to the AD7893 family of LC2MOS 12-bit ADCs. The 'ARZ' designation identifies the industrial temperature grade (-40°C to +85°C) and lead-free RoHS-compliant SOIC-8 package. The '-10' suffix specifies the ±10 V input range configuration.

Replacement Considerations

AD7893BRZ-10REEL7 offers improved linearity specifications within the same package and input range.

FAQ

How is the conversion cycle initiated?

Conversion is triggered by the rising edge of the CONVST input pin, which switches the track/hold to hold mode and starts the internal clock sequence.

What is the output coding format for the AD7893-10?

The AD7893-10 uses two's complement binary output coding to represent bipolar input voltages.

Can the device operate at higher throughput rates than 117 kHz?

Yes, the device can operate up to 133 kHz, but reading data during conversion may degrade performance metrics such as SNR and increase code flicker.