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

Overview

LM4050AEM3-5.0+T from Analog Devices is a precision 5.000V, 0.1% initial accuracy, 50ppm/°C max temperature coefficient shunt voltage reference in SC70-3 package. It operates from 60µA to 15mA shunt current, delivers 80µVRMS wideband noise (10Hz–10kHz), and maintains stable regulation across –40°C to +125°C without external capacitors - ideal for high-accuracy ADC/DAC biasing in portable instrumentation.

For engineers reviewing the LM4050AEM3-5.0+T datasheet, LM4050AEM3-5.0+T pinout, LM4050AEM3-5.0+T application, or LM4050AEM3-5.0+T equivalent, key selection criteria include guaranteed 0.1% initial tolerance at +25°C, ±5.0mV total tolerance over full temperature range, low dynamic impedance (≤1.1Ω), no-output-capacitor stability, and AEC-Q100 qualification for automotive-grade designs.

Technical Context

The LM4050AEM3-5.0+T implements a laser-trimmed bandgap core with two-terminal shunt topology, functioning as a precision zener-like reference that clamps at 5.000V when reverse-biased between 60µA and 15mA. Its internal architecture eliminates need for series pass transistors or external compensation networks.

Guaranteed performance includes ±15ppm/°C typical temperature coefficient (max 50ppm/°C), 120ppm long-term stability after 1000 hours, and stable operation into any capacitive load - enabling direct integration into space-constrained, battery-powered systems requiring metrology-grade voltage references.

Key Specifications

Pinout & Package

LM4050AEM3-5.0+T uses the 3-pin SC70 surface-mount package (1.8mm × 1.8mm), 50% smaller than SOT23. Pin 3 is NC (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+T provides superior 0.1% initial accuracy, 50ppm/°C tempco, 80µVRMS noise, and AEC-Q100 qualification - making it the optimal choice for high-reliability, metrology-grade, and automotive applications demanding minimal calibration overhead and long-term stability.

Availability

LM4050AEM3-5.0+T is available at Aetrix Electronics and suitable for portable instrumentation, automotive sensor interfaces, and industrial process controllers requiring stable component supply with guaranteed long-term availability and traceable sourcing.

Supply support for LM4050AEM3-5.0+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.

The LM4050/LM4051 product line delivers precision shunt voltage references optimized for space-constrained, low-power, and high-reliability applications - especially where AEC-Q100 qualification, zero-output-capacitor operation, and sub-1% total error over temperature are critical.

FAQ

What is the guaranteed initial accuracy of LM4050AEM3-5.0+T at +25°C?

The LM4050AEM3-5.0+T guarantees ±0.1% initial accuracy at +25°C, corresponding to ±5.0mV tolerance around its nominal 5.000V output. This is verified during 100% production testing and applies to all units shipped. The LM4050AEM3-5.0+T achieves this via laser trimming of internal resistors, eliminating need for system-level calibration in most precision applications.

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

No, LM4050AEM3-5.0+T does not require an external output capacitor and remains stable with any capacitive load - including direct connection to ADC input capacitors or long PCB traces. This is confirmed by design and guaranteed across its full operating current range (60µA to 15mA) and temperature range (–40°C to +125°C). The LM4050AEM3-5.0+T achieves this through internal compensation, simplifying layout and improving reliability.

What is the maximum shunt current rating for LM4050AEM3-5.0+T?

The absolute maximum shunt current for LM4050AEM3-5.0+T is 20mA, but the recommended operating range is 60µA to 15mA for guaranteed regulation performance. Exceeding 15mA may increase power dissipation beyond safe thermal limits in the SC70-3 package, especially at high ambient temperatures. The LM4050AEM3-5.0+T must always maintain ≥60µA shunt current to ensure proper regulation.

Is LM4050AEM3-5.0+T qualified for automotive applications?

Yes, LM4050AEM3-5.0+T is AEC-Q100 qualified for automotive applications, with guaranteed operation from –40°C to +125°C and validated reliability per stress-test requirements. This qualification covers the specific /V versions (e.g., LM4050AEM3-5.0/V+T), and the LM4050AEM3-5.0+T shares identical die and process - making it suitable for engine control, body electronics, and ADAS sensor interfaces where automotive-grade assurance is required.

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

LM4050AEM3-5.0+T uses the 3-pin SC70 surface-mount package with outline number 21-0075 and land pattern 90-0208. Its physical dimensions are 1.8mm × 1.8mm × 0.9mm (L × W × H), making it 50% smaller than comparable SOT23 devices. Pin 1 is the anode (+), Pin 2 is the cathode (–), and Pin 3 is NC (no connection) - must be left floating or tied to Pin 2 per datasheet guidance.