CAT8900B120TBGT3

Overview

The CAT8900B120TBGT3 is a precision analog voltage reference integrated circuit manufactured by onsemi. It provides a fixed output voltage of 1.2V with a tolerance of ±0.06%. The device operates within an input voltage range of 2.7V to 5.5V and draws a supply current of 800nA. It features a temperature coefficient of 50ppm/°C and low noise performance of 50µVp-p from 0.1Hz to 10Hz. The component is housed in a SOT-23-3 surface-mount package and supports an operating temperature range of -40°C to +85°C.

Feature Summary

• Delivers high-precision fixed voltage output with tight initial accuracy tolerance
• Operates with ultra-low quiescent current for efficient power management
• Provides stable reference performance across extended industrial temperature ranges

Applications

• Precision data acquisition systems requiring accurate voltage references
• Battery-powered instrumentation benefiting from low current consumption
• High-resolution analog-to-digital converter (ADC) reference inputs

Procurement Notes

Verify the specific suffix TBGT3 against official onsemi documentation to confirm package type, tape-and-reel specifications, and compliance status. Ensure the sourcing channel provides valid traceability for this precision component. Cross-reference the full part number with manufacturer databases to avoid confusion with similar variants in the CAT8900 series that may have different voltage outputs or tolerances.

Selection Notes

Select this component when a fixed 1.2V reference with ±0.06% accuracy is required. Consider the 800nA supply current for battery life optimization. Verify that the SOT-23-3 footprint fits the design constraints. Compare the 50ppm/°C temperature coefficient against system thermal stability requirements. Ensure the 2.7V minimum input voltage aligns with the available supply rails.

Part Context

This part belongs to the CAT8900 series of precision voltage references from onsemi. The series offers various fixed output voltages and accuracy grades. The B suffix typically denotes the ±0.06% tolerance grade. The 120 indicates the 1.2V output voltage. The TBGT3 suffix specifies the SOT-23-3 package and reel packaging configuration.

Replacement Considerations

Check for direct pin-compatible alternatives within the CAT8900 family offering different voltages or accuracies. Evaluate other manufacturers' precision references with similar 1.2V output, low noise, and SOT-23-3 packaging. Verify electrical parameter equivalence before substitution.