ADS7818E/2K5G4

Analog To Digital Converters (ADC) Overview

The ADS7818E/2K5G4 is a single-channel, 12-bit successive approximation register (SAR) analog-to-digital converter manufactured by Texas Instruments. It operates with a sampling rate of 500 kSPS and accepts differential analog inputs. The device utilizes an internal reference voltage and communicates via a high-speed SPI-compatible serial interface. It functions on a single 5 V supply, consuming 11 mW of power at full speed. Key performance metrics include a signal-to-noise ratio of 72 dB, integral nonlinearity of ±1 LSB, and differential nonlinearity of ±1 LSB. It is housed in an 8-pin VSSOP package and supports an operating temperature range from -40°C to +85°C.

Analog To Digital Converters (ADC) Feature Summary

• Integrates a 12-bit SAR ADC with a sample-and-hold circuit for high-speed data acquisition.
• Features an internal reference voltage source to simplify external component requirements.
• Supports flexible digital interfaces through a 3-wire or SPI-compatible serial communication protocol.
• Designed for low-power operation while maintaining high throughput capabilities.

Analog To Digital Converters (ADC) Applications

• Portable instrumentation systems requiring high resolution and low power consumption.
• Industrial process control loops utilizing differential input signals.
• Battery-powered data acquisition devices needing efficient power management.
• Medical equipment requiring precise analog signal digitization.

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'G4' against current manufacturer documentation to confirm lead-free compliance status and RoHS alignment. Ensure the ordering code matches the required tape and reel quantity specifications. Confirm package availability and moisture sensitivity level handling procedures prior to procurement.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a single-channel, 12-bit resolution is sufficient for the application. Consider the 500 kSPS sampling rate against system bandwidth requirements. Evaluate the need for an internal reference versus an external precision reference. Compare power consumption figures with alternative SAR ADCs if battery life is critical.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADS7818 family of high-speed, low-power ADCs from Texas Instruments. It shares architectural similarities with other members like the ADS7817 and ADS7819 but differs in channel count and specific interface configurations. The family targets applications balancing speed and power efficiency in compact form factors.

Analog To Digital Converters (ADC) Replacement Considerations

Direct pin-compatible alternatives within the same family include the ADS7818EB/250. Verify functional equivalence regarding input type and reference configuration before substitution. Cross-reference datasheets for any changes in electrical characteristics or packaging dimensions.