ADR3650BRMZ-R7

Overview

The ADR3650BRMZ-R7 is a precision, micropower voltage reference with a fixed 5.0 V output, housed in an 8-lead MSOP package. It features a maximum temperature coefficient of 3 ppm/°C and an initial output voltage error of ±0.04%. The device provides high current capacity, sourcing up to 70 mA and sinking up to 20 mA, with a low dropout voltage of 0.15 V at 10 mA load. Quiescent current is 70 µA, reducing to 1.5 µA in shutdown mode. It operates over a -40°C to +125°C range with a maximum input voltage of 16 V.

Feature Summary

• High current output capability allows direct replacement for standard LDO regulators
• DigiTrim technology ensures low thermal hysteresis and long-term stability
• Low noise performance suitable for sensitive signal paths
• Integrated enable pin supports power management applications

Applications

• Precision power supplies
• Portable instrumentation
• Process transmitters
• Remote sensors
• Medical instrumentation

Procurement Notes

Verify the specific B-grade suffix and R7 reel packaging against the official Analog Devices ordering guide. Confirm that the 8-lead MSOP footprint matches the target PCB design. Ensure the 16 V maximum input rating aligns with the system supply rails. Check for any recent product change notifications regarding manufacturing updates.

Selection Notes

Select this component when a stable 5 V reference requires significant load drive capability without external pass transistors. The B-grade specification is necessary for applications demanding the lowest possible temperature coefficient and initial accuracy. Consider the 0.1 µF minimum load capacitance requirement for circuit stability during layout.

Part Context

This part belongs to the ADR3625/ADR3630/ADR3650 family of micropower, high-current voltage references. While sharing the same package and core architecture, it differs from the ADR3625 (2.5 V) and ADR3630 (3.0 V) by its fixed 5.0 V output level. It serves as a high-performance alternative to standard LDO regulators in space-constrained designs.

Replacement Considerations

Direct substitutes within the same family include the ADR3625BRMZ-R7 and ADR3630BRMZ-R7, provided the output voltage difference is acceptable. Other series references like the ADR431 may be considered if lower current drive is sufficient.