CAT8900B300TBGT3

Overview

The CAT8900B300TBGT3 is a precision analog voltage reference integrated circuit manufactured by onsemi. It provides a fixed output voltage of 3.0V with an initial accuracy 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 low noise performance of 50µVp-p in the 0.1Hz to 10Hz frequency band and a temperature coefficient of 50ppm/°C. The component supports a maximum load current of 10mA and functions reliably across a junction temperature range of -40°C to +125°C. It is housed in a compact SOT-23-3 surface-mount package.

Feature Summary

• Delivers high-precision fixed voltage output with tight initial accuracy tolerance for sensitive measurement applications
• Operates with ultra-low quiescent current consumption suitable for battery-powered systems
• Provides stable reference performance with low low-frequency noise characteristics
• Features wide operating temperature range ensuring reliability in harsh environments

Applications

• Precision data acquisition systems requiring stable reference voltages
• Battery-powered instrumentation and portable measurement devices
• High-resolution analog-to-digital converter (ADC) reference inputs
• Calibration equipment requiring long-term voltage stability

Procurement Notes

Verify the specific suffix TBGT3 to confirm the tape-and-reel packaging format and ensure compatibility with automated assembly processes. Confirm that the B-grade accuracy rating aligns with your design's tolerance requirements. Check for RoHS compliance status and lead-free certification as required by your manufacturing standards. Ensure the SOT-23-3 footprint matches your PCB layout constraints. Validate that the 3.0V output level meets the input specifications of your downstream components.

Selection Notes

Select this component when a fixed 3.0V reference is required with higher accuracy than standard A-grade variants. Consider the 800nA supply current for power-sensitive designs where minimal quiescent drain is critical. The SOT-23-3 package offers space efficiency for compact boards. Evaluate the 50ppm/°C temperature coefficient against your system's thermal environment to ensure drift remains within acceptable limits over the full operating range.

Part Context

This part belongs to the CAT8900 series of precision voltage references from onsemi, designed for applications demanding high accuracy and low power consumption. The series includes various output voltages and accuracy grades, with the B-grade offering tighter tolerances than the standard A-grade. These devices are commonly used in industrial, medical, and communications equipment where signal integrity depends on a stable voltage baseline.

Replacement Considerations

Direct substitutes include other CAT8900 series parts with different output voltages or accuracy grades, such as CAT8900B250TBGT3 or CAT8900A300TBGT3, provided the electrical parameters meet the design requirements. Verify pinout compatibility and thermal performance when swapping between different accuracy grades or voltage outputs within the same family.