AD1582WBRTZ-R7

Voltage Reference Overview

The AD1582WBRTZ-R7 is a micropower, precision series mode voltage reference manufactured by Analog Devices Inc. It provides a stable 2.5 V output with an initial accuracy of 0.8% and a temperature coefficient of 100 ppm/°C. The device operates within a supply range from VOUT + 200 mV to 12 V, drawing a maximum quiescent current of 70 µA. It supports a load current capability of ±5 mA and features wideband noise of 50 µV rms (10 Hz to 10 kHz). The component is housed in a compact SOT-23-3 package and is specified for operation across the industrial temperature range of −40°C to +125°C.

Voltage Reference Feature Summary

• Series mode architecture eliminates input series resistor waste for improved power efficiency
• Patented temperature drift curvature correction minimizes nonlinearities in voltage output
• Low dropout design allows operation with only 200 mV headroom above output voltage
• High ripple rejection capability attenuates line voltage fluctuations effectively

Voltage Reference Applications

• Portable battery-powered equipment such as notebook computers and cellular phones
• Smart industrial transmitters requiring precise signal conditioning
• Automotive electronic systems
• Hard disk drive control circuits
• PCMCIA cards and GPS devices

Voltage Reference Procurement Notes

Verify that the WB suffix corresponds to the specific automotive qualification or grade variant required for your application. Confirm the RT package designation matches the SOT-23-3 footprint on your PCB layout. Ensure the REEL7 packaging format aligns with your automated assembly equipment specifications before finalizing procurement orders.

Voltage Reference Selection Notes

Select this part when low quiescent current is critical for extending battery life in portable devices. The series configuration is preferred over shunt references to minimize power dissipation across varying supply voltages. Verify that the 0.8% initial accuracy meets system tolerance requirements, considering the 100 ppm/°C temperature drift over the full operating range.

Voltage Reference Part Context

This component belongs to the AD158x family of micropower precision references, which includes the AD1583, AD1584, and AD1585 variants offering different fixed output voltages. All members share identical pinouts, package styles, and general performance characteristics while differing primarily in their nominal output voltage levels and specific electrical grades.

Voltage Reference Replacement Considerations

Direct substitutes include AD1582ARTZ, AD1582BRTZ, and AD1582WRTZ. These parts maintain the same 2.5 V output and SOT-23-3 package but may differ in initial accuracy grades or automotive qualification status.