CAT8900C120TBGT3

Overview

The CAT8900C120TBGT3 is a precision series voltage reference IC manufactured by onsemi. It provides a fixed output voltage of 1.2V with an initial accuracy tolerance of ±2.5%. The device operates within an input voltage range of 2.7V to 5.5V and draws a typical supply current of 450 nA. It features a low temperature coefficient of drift, specified as 20 ppm/°C in some documentation, while other sources cite 50 ppm/°C for the series. The component supports a maximum output current of 10 mA and functions reliably across a junction temperature range of -40°C to +85°C. It is housed in a compact SOT-23-3 surface-mount package.

Feature Summary

• Provides stable fixed voltage reference output
• Ultra-low quiescent current consumption
• Compact three-lead surface-mount packaging

Applications

• Portable battery-powered instrumentation
• Data acquisition systems
• Handheld meters

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm lot traceability and RoHS compliance status prior to integration. Note that availability may be restricted due to lifecycle status; check current stock levels and lead times carefully. Ensure storage conditions meet semiconductor handling standards to prevent damage during assembly.

Selection Notes

Select this part when a low-cost, low-power precision reference is required for space-constrained designs. Compare the 1.2V output against system ADC requirements. Evaluate the ±2.5% initial accuracy against application tolerance needs. Consider the SOT-23-3 footprint constraints versus thermal dissipation requirements for the specific PCB layout.

Part Context

This component belongs to the CAT8900 family of low-voltage precision references from onsemi. The family includes variants with different output voltages and accuracy grades, such as the CAT8900D300TBGT3 (3.0V) and CAT8900B120TBGT3 (1.2V). These devices are designed for applications requiring stable voltage sources in portable electronics and industrial sensors.

Replacement Considerations

Direct substitutes include CAT8900B120TBGT3 and CAT8900D120TBGT3 from the same manufacturer. Verify pinout compatibility and electrical parameter alignment before substitution.