AD7893AN-10

Overview

The AD7893AN-10 is a 12-bit successive approximation analog-to-digital converter (ADC) housed in an 8-pin plastic DIP package. It operates from a single +5 V supply and features an on-chip track/hold amplifier with a conversion time of 6 μs and a throughput rate up to 117 kHz. The device accepts a bipolar analog input range of ±10 V and utilizes a high-speed two-wire serial interface for data output. Key electrical specifications include a signal-to-noise ratio of 70 dB, differential nonlinearity of ±1 LSB, and power dissipation typically at 25 mW.

Feature Summary

• Integrated signal scaling circuitry enables direct acquisition of ±10 V analog signals without external attenuation components.
• On-chip track/hold amplifier ensures accurate digitization of full-scale sine waves by maintaining signal integrity during the conversion cycle.
• Two-wire serial interface simplifies system integration by providing a straightforward connection to microcontrollers and DSP processors.

Applications

• Battery-powered instrumentation systems requiring low power consumption
• Industrial process control loops utilizing standard voltage sensor outputs
• Portable data acquisition devices needing compact form factors

Procurement Notes

Verify that the specific ordering suffix matches the required package type and temperature range. Confirm the analog input voltage range specification aligns with the application requirements before procurement. Ensure proper handling precautions are observed due to electrostatic sensitivity.

Selection Notes

Select this component when a single-supply operation is required alongside a wide bipolar input range. Consider the trade-off between throughput speed and dynamic performance if operating above the standard 117 kHz rate. Verify compatibility with the external reference voltage source to maintain specified accuracy levels.

Part Context

This part belongs to the AD7893 family of fast 12-bit ADCs. Variants within the series differ primarily in analog input ranges and packaging options. The AD7893AN-10 specifically denotes the ±10 V input version in a plastic dual-in-line package suitable for commercial temperature ranges.

Replacement Considerations

Direct pin-compatible replacements within the same manufacturer's portfolio may offer improved linearity or extended temperature ranges. Evaluate alternative packages such as SOIC for surface mount applications if board space constraints change.