ADS7818E/250

Analog To Digital Converters (ADC) Overview

The ADS7818E/250 is a monolithic 12-bit successive approximation register (SAR) analog-to-digital converter manufactured by Texas Instruments. It integrates a high-speed sampling ADC, track-and-hold amplifier, and voltage reference within an 8-lead VSSOP package. The device operates with a single 5V supply and supports a maximum sampling rate of 500ksps. Data transfer utilizes a standard SPI-compatible serial interface. It features differential analog inputs and is designed for low-power applications, operating across a temperature range of -40°C to +85°C.

Analog To Digital Converters (ADC) Feature Summary

• Integrates a 12-bit SAR ADC with internal voltage reference and track-and-hold circuitry
• Supports high-speed data conversion at rates up to 500ksps
• Features a flexible SPI-compatible serial interface for microcontroller connectivity
• Accepts differential analog input signals for improved noise rejection

Analog To Digital Converters (ADC) Applications

• Portable instrumentation systems requiring low power consumption
• Battery-powered data acquisition devices
• Industrial process control signal conditioning
• Medical equipment requiring precise analog-to-digital conversion

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix E/250 corresponds to the tape and reel packaging format when ordering. Confirm that the 8-VSSOP package dimensions align with the target PCB footprint. Ensure the 5V supply requirement matches the system design constraints. Check RoHS3 compliance status for environmental regulations. Validate the operating temperature range against the intended application environment.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a single-channel, 12-bit resolution is sufficient for the application. Consider the 500ksps speed limit for dynamic signal requirements. Evaluate the VSSOP package size against available board space. Compare power consumption metrics if battery life is critical. Verify SPI compatibility with the host processor's digital interface capabilities.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADS78xx family of micro-power ADCs from Texas Instruments. It shares architectural similarities with other members like the ADS7822 and ADS7828 but differs in channel count and interface type. The ADS7818 specifically targets single-channel applications where moderate speed and high accuracy are required without the complexity of multiplexed inputs.

Analog To Digital Converters (ADC) Replacement Considerations

Direct pin-for-pin replacements within the same package may include other variants from the ADS78xx series, such as the ADS7822 or ADS7828, provided their channel counts and interfaces match the design requirements. Verify electrical specifications and software compatibility before substitution.