REF35409YBHR

Overview

The REF35409YBHR is a fixed-output series voltage reference from Texas Instruments, providing a nominal output of 4.096V. It operates within an input voltage range from VREF + VDO up to 6V and features a typical quiescent current of 650nA in active mode. The device offers ±0.05% initial accuracy at 25°C and a maximum temperature coefficient of 10ppm/°C over the -40°C to 85°C range. It is housed in a 4-pin WCSP package with dimensions of 1.05mm x 0.84mm.

Feature Summary

• Ultra-low power consumption with 650nA typical quiescent current
• High precision with ±0.05% initial accuracy and low drift
• Integrated enable pin for shutdown control and noise reduction pin

Applications

• Flow transmitters
• Blood glucose monitors
• Servo drive control modules
• Power quality analyzers
• Oscilloscopes

Procurement Notes

Verify the specific ordering suffix YBHR corresponds to the 4-pin WCSP package configuration. Confirm that the required output voltage variant matches the 4.096V specification. Ensure the application environment stays within the recommended operating temperature range of -40°C to 85°C for the specified 10ppm/°C temperature coefficient performance.

Selection Notes

Select this component when space-constrained designs require a high-precision series reference. The 4-pin WCSP package provides the smallest footprint option available in the REF35 family. Consider the 10ppm/°C temperature coefficient limit if operating between -40°C and 85°C, as the wider industrial range utilizes a higher coefficient value.

Part Context

This part belongs to the REF35 family of nanopower, low-drift, high-precision series voltage references. The family is designed for portable and low-current applications requiring strong low-noise performance. It supports output voltages ranging from 1.024V to 5.0V and is available in both 6-pin SOT-23 and 4-pin WCSP packages.

Replacement Considerations

The REF35409QDBVR is a confirmed substitute part number offering the same 4.096V output but in a 6-pin SOT-23 package.