ADS1118IDGST

Analog To Digital Converters (ADC) Overview

The ADS1118IDGST is a 16-bit delta-sigma analog-to-digital converter (ADC) housed in a 10-VSSOP package. It supports a maximum data rate of 860 samples per second and accepts differential or single-ended inputs via an integrated multiplexer. The device operates on a supply voltage ranging from 2 V to 5.5 V for both analog and digital domains. Key integrated features include a programmable gain amplifier, internal voltage reference, oscillator, and a high-precision temperature sensor. It communicates through a standard SPI interface and functions within a temperature range of -40°C to +125°C.

Analog To Digital Converters (ADC) Feature Summary

• Integrates a programmable gain amplifier with input ranges from ±256 mV to ±6.144 V for flexible signal conditioning.
• Includes an onboard precision temperature sensor suitable for system monitoring or thermocouple cold-junction compensation.
• Supports configurable input modes allowing measurement of two differential channels or four single-ended channels.
• Features ultra-low power consumption with automatic shutdown capabilities in single-shot conversion mode.

Analog To Digital Converters (ADC) Applications

• Battery-powered portable instrumentation requiring minimal board space.
• Industrial process control systems utilizing RTDs, thermistors, or strain gauges.
• Medical devices such as pulse oximeters and blood pressure monitors.
• Environmental monitoring stations measuring low-level sensor signals.

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix IDGST corresponds to the 10-VSSOP package variant when sourcing. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly line. Ensure the ordering part number matches the exact pinout and electrical specifications defined in the Texas Instruments datasheet to avoid integration errors.

Analog To Digital Converters (ADC) Selection Notes

Select this component when application constraints demand a small footprint combined with high resolution. It is appropriate for designs requiring an integrated temperature sensor to eliminate external components. Consider the trade-off between the 860 SPS maximum speed and the lower power consumption available at reduced data rates.

Analog To Digital Converters (ADC) Part Context

This device belongs to the ADS1x18 family of ultrasmall, low-power ADCs from Texas Instruments. It shares architectural similarities with the ADS1018 but offers higher 16-bit resolution. The series is designed to replace larger legacy converters in space-constrained environments while maintaining precision performance through sigma-delta modulation techniques.

Analog To Digital Converters (ADC) Replacement Considerations

ADS1118IDGSR: Same functional specifications but supplied in tape-and-reel packaging instead of cut tape.

Analog To Digital Converters (ADC) FAQ

Can the ADS1118IDGST measure both differential and single-ended signals simultaneously?

No, the internal multiplexer must be configured to select either two differential inputs or four single-ended inputs; these modes are mutually exclusive.

What is the purpose of the integrated temperature sensor?

The sensor provides system-level temperature monitoring and can be used for cold-junction compensation when measuring thermocouples.

How does the device manage power consumption during operation?

In single-shot mode, the ADS1118IDGST automatically powers down after completing a conversion, significantly reducing current draw during idle periods.