Analog Devices Inc./Maxim Integrated LM4050AEM3-5.0/V+T

Overview

LM4050AEM3-5.0/V+T from Analog Devices is a precision 5.000 V, 0.1% initial accuracy, 50 ppm/°C max temperature coefficient shunt voltage reference in SC70-3 package. It operates over -40°C to +125°C with 60 µA to 15 mA shunt current range and 80 µV_RMS wideband noise (10 Hz–10 kHz), enabling high-accuracy ADC/DAC biasing in automotive and industrial sensor signal chains.

For engineers reviewing the LM4050AEM3-5.0/V+T datasheet, LM4050AEM3-5.0/V+T pinout, LM4050AEM3-5.0/V+T application, or LM4050AEM3-5.0/V+T equivalent, key selection criteria include guaranteed AEC-Q100 qualification, no-output-capacitor stability, ultra-small 1.8 mm × 1.8 mm footprint, and ±5.0 mV reverse breakdown voltage tolerance at +25°C.

Technical Context

The LM4050AEM3-5.0/V+T implements a laser-trimmed bandgap shunt architecture that maintains stable 5.000 V reverse breakdown across 60 µA–15 mA operating current and -40°C to +125°C ambient. Its dynamic impedance is ≤1.1 Ω at 1 mA, ensuring minimal output voltage shift under load transients.

Unlike series references, it requires only an external source resistor (RS) for biasing and tolerates any capacitive load without oscillation-eliminating need for output stabilization capacitors while supporting direct connection to SAR ADC reference inputs or op-amp feedback nodes.

Key Specifications

Pinout & Package

LM4050AEM3-5.0/V+T uses the 3-pin SC70 surface-mount package (1.8 mm × 1.8 mm, 0.95 mm height), 50% smaller than SOT23. Pin 3 is NC and must be left unconnected or tied to Pin 2.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar shunt voltage reference applications.

Compared with TLVH431ACDBVR and MAX6008AEUR+T, LM4050AEM3-5.0/V+T delivers tighter 0.1% accuracy, lower 50 ppm/°C tempco, and certified AEC-Q100 qualification-making it the only option suitable for automotive-grade 5 V reference without design compromises.

Availability

LM4050AEM3-5.0/V+T is available at Aetrix Electronics and suitable for automotive engine control units, industrial pressure transmitters, portable medical devices, and cellular IoT modem power management requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LM4050AEM3-5.0/V+T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.

The LM4050/LM4051 product line delivers precision shunt voltage references optimized for space-constrained, high-reliability applications demanding AEC-Q100 qualification, ultra-low noise, and zero-output-capacitor operation.

FAQ

What is the exact output voltage tolerance of LM4050AEM3-5.0/V+T at +25°C?

The LM4050AEM3-5.0/V+T has a reverse breakdown voltage of 5.000 V ±5.0 mV (±0.1%) at +25°C, as specified in the Electrical Characteristics table for the LM4050A grade. This tight tolerance is achieved via laser trimming and guarantees absolute accuracy without post-production calibration. The LM4050AEM3-5.0/V+T maintains this specification across its full operating temperature range when combined with its 50 ppm/°C tempco rating.

Is LM4050AEM3-5.0/V+T qualified for automotive applications?

Yes, LM4050AEM3-5.0/V+T is explicitly AEC-Q100 qualified, as confirmed in the Features section and Ordering Information table. It meets stress testing requirements for Grade 1 (-40°C to +125°C) operation and is intended for use in automotive engine control units, ADAS sensors, and body electronics. The "/V" suffix in the part number denotes AEC-Q100 qualification, and the LM4050AEM3-5.0/V+T datasheet revision history confirms inclusion in automotive package listings since Revision 9 (November 2017).

Does LM4050AEM3-5.0/V+T require an external output capacitor for stability?

No, LM4050AEM3-5.0/V+T does not require an external output capacitor for stability. Its internal compensation ensures unconditional stability with any capacitive load-from 0 pF up to 10 µF-as verified in the Applications Information section and Typical Operating Characteristics. This eliminates capacitor-related drift, aging, and board space, making LM4050AEM3-5.0/V+T ideal for high-precision, low-maintenance systems like medical instruments and automotive sensors.

What is the minimum operating current for LM4050AEM3-5.0/V+T?

The minimum operating current for LM4050AEM3-5.0/V+T is 54 µA at +25°C and 80 µA across the full -40°C to +125°C temperature range, per the Electrical Characteristics table for the 5.000 V variant. Maintaining ≥54 µA ensures proper reverse breakdown regulation; falling below this threshold causes output voltage collapse. Designers must size the source resistor (RS) to guarantee this minimum shunt current under worst-case supply and load conditions.

What package type and dimensions does LM4050AEM3-5.0/V+T use?

LM4050AEM3-5.0/V+T uses the SC70-3 surface-mount package (outline number 21-0075), measuring 1.8 mm × 1.8 mm × 0.95 mm with 0.65 mm pin pitch. The "EM3" in the part number denotes SC70-3, and the "/V" suffix confirms AEC-Q100 qualification. This ultra-compact footprint is 50% smaller than equivalent SOT23 devices, enabling high-density PCB layouts in portable and automotive electronics where board space is constrained.