REF35250YBHR

Overview

The REF35250YBHR is a nanopower, high-precision series voltage reference from the Texas Instruments REF35 family. It provides a fixed 2.5V output with ±0.05% initial accuracy and a maximum temperature coefficient of 10ppm/°C over the -40°C to 85°C range. The device operates on a typical quiescent current of 650nA and supports an input voltage up to 6V. It features low-frequency noise of 3.8ppmP-P (0.1Hz to 10Hz) and includes an enable pin for shutdown control. The component is housed in a compact 4-pin WCSP package.

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 reducing shutdown current
• Noise reduction capability via dedicated NR pin

Applications

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

Procurement Notes

Verify the specific YBH suffix indicates the 4-pin WCSP package configuration rather than the standard SOT-23 variant. Confirm that the required operating temperature range aligns with the -40°C to 85°C specification associated with this package type. Ensure input voltage requirements meet the minimum dropout voltage constraints for the selected load conditions.

Selection Notes

Select this part when space-constrained designs require a high-precision reference in a minimal footprint. The WCSP package offers superior thermal performance compared to larger packages but requires careful PCB layout to manage solder heat shift effects. Consider the 10ppm/°C temperature coefficient limit if the application operates strictly within the industrial temperature range.

Part Context

This component belongs to the REF35 family of ultra-low-power voltage references designed for portable and battery-operated applications. The family combines nanopower operation with high precision, making it suitable for powering precision sensors and data converters where energy efficiency and signal integrity are critical design parameters.

Replacement Considerations

REF35250QDBVR

FAQ

What is the difference between the YBH and DBV packages?

The YBH suffix denotes the 4-pin WCSP package, which has a smaller footprint (1.05mm x 0.84mm) compared to the 6-pin SOT-23 package (DBV). The WCSP package specifies a maximum temperature coefficient of 10ppm/°C over -40°C to 85°C.

How does the EN pin affect power consumption?

The EN (Enable) pin allows the device to be shut down. In shutdown mode, the quiescent current drops significantly to a typical value of 0.1µA at 25°C, extending battery life in portable applications.