Texas Instruments LM158H

Overview

LM158H from Texas Instruments is a dual, low-power, internally frequency-compensated operational amplifier designed for single-supply operation from 3 V to 32 V (or ±1.5 V to ±16 V), featuring 100 dB DC voltage gain, 1 MHz unity-gain bandwidth, 2 mV input offset voltage, and rail-to-ground output swing - enabling direct sensing of signals at ground in industrial sensor interfaces and 4–20 mA transmitter circuits.

For engineers reviewing the LM158H datasheet, LM158H pinout, LM158H application, or LM158H equivalent, this page delivers verified electrical parameters, TO-CAN (8) package mapping, functional pin roles, real-world use cases in single-supply signal conditioning, and two validated alternative op-amps with documented performance trade-offs.

Technical Context

The LM158H implements a PNP-input differential pair architecture enabling input common-mode voltage range down to ground and output swing to ground under single-supply conditions. Its bias network delivers supply-independent quiescent current (500 μA typ.) across 3–32 V, and its temperature-compensated unity-gain crossover frequency ensures stable AC response over −55°C to +125°C.

Each amplifier features independent input stages with no internal clamping diodes - allowing differential input voltages exceeding V+ without damage - while maintaining 70 dB typical CMRR and 65 dB PSRR. The output stage operates in class-A for small signals and transitions to class-B for higher current drive, supporting up to 40 mA sink/source into resistive loads.

Key Specifications

Pinout & Package

LM158H is packaged in an 8-pin TO-CAN (metal can) housing with 9.08 mm × 9.09 mm body size, hermetically sealed for high-reliability military and aerospace applications. Pin layout follows standard dual-op-amp configuration with shared power and ground terminals.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual operational amplifier applications.

Compared with LM358H and LM2904H, the LM158H uniquely combines military-grade temperature range (−55°C to +125°C), lowest input offset voltage in the family, and hermetic TO-CAN packaging - making it the sole choice for high-reliability aerospace, defense, and downhole oilfield electronics where long-term parametric stability and environmental resilience are mandatory.

Availability

LM158H is available at Aetrix Electronics and suitable for industrial sensor interfaces, 4–20 mA transmitter designs, and military-grade DC gain blocks requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LM158H 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and communications markets.

The LM158H belongs to TI's legacy high-reliability linear amplifier product line, specifically engineered for demanding military, aerospace, and industrial applications where extended temperature operation, hermetic packaging, and long-term parameter stability are essential design requirements.

FAQ

What is the maximum operating temperature range for the LM158H?

The LM158H is specified for operation from −55°C to +125°C, meeting MIL-PRF-38535 Class H requirements. This extended range is enabled by its TO-CAN (8) metal-can package and internal process hardening. Unlike commercial variants such as LM358H, the LM158H maintains guaranteed performance across this full range - critical for avionics, space systems, and downhole drilling electronics where thermal cycling is severe. Always refer to the absolute maximum ratings table for junction temperature limits.

Does the LM158H support true rail-to-rail input and output operation?

The LM158H supports rail-to-ground input and output operation but not full rail-to-rail. Its input common-mode voltage range extends from ground (0 V) to V+ −1.5 V, and its output swings to ground and within 1.5 V of V+. This enables direct interfacing with grounded sensors and low-side current sensing, but does not support input signals at V+ or output saturation at V+. For full rail-to-rail performance, consider modern alternatives like TLV2462 or OPA2333 - though these lack the LM158H's military temperature rating and hermetic packaging.

Can the LM158H be used with a single 3.3-V supply?

Yes, the LM158H operates reliably from a single 3.3-V supply, as confirmed in TI's recommended operating conditions (min. 3 V). At 3.3 V, it delivers usable output swing (0 V to ~1.8 V), 100 dB open-loop gain, and 500 μA supply current per amplifier. This makes it suitable for interfacing with 3.3-V microcontrollers and ADCs in low-power industrial IoT nodes. However, output headroom shrinks at lower supplies, so verify load requirements and closed-loop gain margins in final design validation.

What is the purpose of the TO-CAN (8) package used in the LM158H?

The TO-CAN (8) package is a hermetically sealed metal can that provides superior moisture resistance, EMI shielding, and mechanical robustness compared to plastic SOIC or PDIP packages. It enables long-term reliability in harsh environments - including high-humidity, salt fog, and radiation-exposed applications - and supports MIL-STD-883 testing. The LM158H's TO-CAN construction directly contributes to its −55°C to +125°C qualification and makes it suitable for mission-critical aerospace and defense systems where package integrity is non-negotiable.

How does the LM158H differ from the LM358 in terms of input bias current?

The LM158H specifies a maximum input bias current of 50 nA at 25°C (typ. 20 nA), significantly lower than the LM358's 250 nA max (typ. 45 nA). This difference arises from process optimization in the LM158H's PNP input stage, reducing base current leakage. In high-impedance sensor applications - such as piezoelectric transducers or pH electrodes - the LM158H's lower bias current minimizes voltage drop across source impedances, preserving signal fidelity and reducing calibration drift over time. Always verify bias current impact using worst-case calculations in your specific circuit.