ADC128D818CIMTX/NOPB

Analog To Digital Converters (ADC) Overview

The ADC128D818CIMTX/NOPB is a 12-bit delta-sigma analog-to-digital converter designed for system monitoring applications. It features an I²C serial interface supporting standard (100 kbps) and fast (400 kbps) modes. The device integrates eight configurable single-ended or pseudo-differential input channels, a local temperature sensor, and a watchdog window comparator with interrupt output. It operates on a supply voltage range of 3 V to 5.5 V for both analog and digital domains. Key performance metrics include ±1 LSB integral nonlinearity (INL), ±1 LSB differential nonlinearity (DNL), and a total unadjusted error range of -0.45% to +0.2%. The component functions within a temperature range of -40°C to +125°C and is housed in a 16-pin TSSOP package.

Analog To Digital Converters (ADC) Feature Summary

• Integrates a 12-bit delta-sigma ADC with eight multiplexed input channels supporting single-ended and pseudo-differential configurations.
• Includes a built-in local temperature sensor with specified accuracy ranges and a watchdog window comparator for status monitoring.
• Features an I²C-compatible serial interface with timeout reset functionality to prevent bus lockup and nine selectable addresses.
• Supports independent channel shutdown for power reduction and includes a deep shutdown mode to minimize current consumption.

Analog To Digital Converters (ADC) Applications

• Communication infrastructure equipment monitoring
• Server system health and environmental monitoring
• Industrial process control systems
• Medical instrumentation data acquisition

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix NOPB indicates lead-free compliance and RoHS adherence when sourcing. Confirm the CIMTX designation corresponds to the TSSOP-16 surface-mount package variant. Ensure the supplier provides official datasheets matching the Texas Instruments part number to validate the I²C interface speed and operating voltage specifications before integration into the design.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a multi-channel system monitor with integrated thermal sensing is required. The delta-sigma architecture offers high resolution suitable for precision measurements. Consider the I²C interface constraints regarding bus speed and address availability. Evaluate the power consumption requirements against the available shutdown modes if battery operation is critical.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADC128D818 series of system monitor ADCs from Texas Instruments. It shares the core architecture with variants like the ADC128S052 but differs significantly in interface type, utilizing I²C instead of SPI. The series is designed for applications requiring simultaneous monitoring of multiple analog signals and internal temperature without external reference components.

Analog To Digital Converters (ADC) Replacement Considerations

Direct substitutes must match the 12-bit resolution, I²C interface, and 16-TSSOP package. Verify pin compatibility for the SDA and SCL lines. Check if alternative parts support the same 3V to 5.5V supply range and -40°C to +125°C operating temperature. Ensure the replacement includes similar integrated features such as the internal reference and temperature sensor.