Texas Instruments LM4040DIZ-10.0/NOPB

Overview

LM4040DIZ-10.0/NOPB from Texas Instruments is a precision micropower shunt voltage reference in TO-92 package, delivering a stable 10.0 V reverse breakdown voltage with ±1% initial tolerance (Grade D), 100 μA minimum operating current, 150 ppm/°C max temperature coefficient, and 35 μV_rms wideband noise (10 Hz–10 kHz). It serves as a compact, capacitor-free reference in analog input modules and field transmitters requiring high accuracy over −40°C to +85°C.

For engineers reviewing the LM4040DIZ-10.0/NOPB datasheet, LM4040DIZ-10.0/NOPB pinout, LM4040DIZ-10.0/NOPB application, or LM4040DIZ-10.0/NOPB equivalent, this page delivers verified specifications, TO-92 terminal mapping, automotive-grade thermal hysteresis (0.08%), and real-world substitution guidance for industrial data acquisition and energy infrastructure designs.

Technical Context

The LM4040DIZ-10.0/NOPB operates as a two-terminal shunt reference, sinking current through its cathode to maintain precise 10.0 V across external loads. Its Zener-zap trimmed bandgap architecture enables ±1% initial accuracy at 25°C and stable regulation across 100 μA–15 mA operating current range without output capacitance.

It features low dynamic impedance (≤1.1 Ω at 1 mA), curvature-corrected temperature drift compensation, and robust ESD immunity (±2000 V HBM), making it suitable for noisy industrial environments where supply headroom is limited and layout space constrained.

Key Specifications

Pinout & Package

LM4040DIZ-10.0/NOPB uses the 3-pin TO-92 (LP) package (4.30 mm × 4.30 mm body), with pins arranged bottom-view: Pin 1 = Cathode, Pin 2 = Anode, Pin 3 = NC (no connect, must float or tie to anode per TI recommendation).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TL431ACLP and MAX6012AEUR+T, LM4040DIZ-10.0/NOPB offers optimal balance of TO-92 mechanical robustness, no-resistor simplicity, and Grade D tolerance-making it ideal for cost-sensitive industrial transmitters where ±100 mV absolute error is acceptable and leaded assembly is preferred.

Availability

LM4040DIZ-10.0/NOPB is available at Aetrix Electronics and suitable for field transmitters, energy infrastructure monitoring, and analog input modules requiring stable component supply with long-term lifecycle support and traceable sourcing.

Supply support for LM4040DIZ-10.0/NOPB 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

Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision reference design and automotive qualification.

The LM4040-N series was engineered for space-constrained, low-power industrial and automotive systems demanding stable, capacitor-free voltage references-targeting applications like sensor signal chains, programmable logic controllers, and battery monitoring units.

FAQ

What is the operating temperature range for LM4040DIZ-10.0/NOPB?

The LM4040DIZ-10.0/NOPB is rated for industrial temperature operation from −40°C to +85°C (Grade I), as confirmed in Section 5.3 of the TI datasheet. It is not specified for extended −40°C to +125°C operation-only LM4040-N-Q1 variants carry AEC-Q100 Grade 1 qualification. This makes LM4040DIZ-10.0/NOPB appropriate for indoor industrial controls but not under-hood automotive use.

Does LM4040DIZ-10.0/NOPB require an external capacitor for stability?

No, LM4040DIZ-10.0/NOPB does not require an external capacitor for stability. Its internal design eliminates the need for output capacitance, and it remains stable with any capacitive load up to 10 nF-as verified in the "No output capacitor required" feature and Figure 8-1 of the TI datasheet. This simplifies layout in compact analog input modules.

What is the minimum cathode current needed for LM4040DIZ-10.0/NOPB to regulate at 10.0 V?

The LM4040DIZ-10.0/NOPB requires a minimum cathode current of 100 μA to maintain regulation at 10.0 V, as specified in Table 5.3 (Recommended Operating Conditions) for the 10.0 V variant. Below this, output voltage drops nonlinearly; design must ensure bias network delivers ≥100 μA across worst-case temperature and input voltage ranges.

How does the TO-92 package of LM4040DIZ-10.0/NOPB affect thermal performance?

The TO-92 (LP) package of LM4040DIZ-10.0/NOPB has a junction-to-ambient thermal resistance (R_θJA) of 166°C/W with 0.125″ lead length, per Section 5.4. At 15 mA max current and 10 V, power dissipation reaches 150 mW-resulting in ~25°C junction rise above ambient. This supports reliable operation in sealed enclosures up to +60°C ambient without heatsinking.

Is LM4040DIZ-10.0/NOPB pin-compatible with other LM4040 variants in TO-92?

Yes, all LM4040-N TO-92 variants-including LM4040DIZ-2.5, LM4040DIZ-5.0, and LM4040DIZ-10.0/NOPB-share identical pinout (Pin 1 = Cathode, Pin 2 = Anode, Pin 3 = NC) and mechanical footprint. This allows drop-in replacement across voltage grades during prototyping or BOM optimization without PCB revision.