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Texas Instruments LM1558H
- Part No.:
- LM1558H
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- TO-99-8 Metal Can
- Datasheet:
-
LM1558H.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT TO99-8
- Quantity:
- Payment:
- Shipping:
Inventory:127
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Product details
Overview
LM1558H from Texas Instruments is a military-grade dual operational amplifier in an 8-lead TO-99 metal can package, rated for −55°C to +125°C operation, with ±22V supply voltage capability, 500 mW power dissipation, and no external frequency compensation required. It delivers independent amplifier channels sharing bias and supply leads, suited for precision analog signal conditioning in aerospace telemetry interfaces and ruggedized industrial control feedback loops.
For engineers reviewing the LM1558H datasheet, LM1558H pinout, LM1558H application, or LM1558H equivalent, key selection considerations include its extended temperature range, TO-99 thermal performance, input offset voltage (1.0–6.0 mV), large-signal voltage gain (25–160 V/mV), and compatibility with legacy analog subsystems requiring MIL-PRF-38535-compliant amplifiers.
Technical Context
The LM1558H implements two fully independent op-amp cores sharing only a common bias network and dual ±VS supply pins. Its internal architecture avoids external compensation components, enabling stable unity-gain operation across its full military temperature range.
It supports rail-to-rail input common-mode voltage up to ±12 V with ±15 V supplies and provides output swing of ±10 V into 2 kΩ loads - critical for driving analog-to-digital converter front-ends and transducer signal chains in high-reliability systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Temp Range | −55°C to +125°C - qualified for aerospace, defense, and downhole industrial environments |
| Supply Voltage | ±22 V - enables wide dynamic range signal handling without external level-shifting |
| Power Dissipation | 500 mW - supports continuous operation in sealed TO-99 packages with conductive heat sinking |
| Input Offset Voltage | 1.0–6.0 mV - determines DC accuracy in precision sensor amplification and summing applications |
| Large-Signal Voltage Gain | 25–160 V/mV - ensures sufficient open-loop gain for stable closed-loop configurations at DC and low frequencies |
| Input Resistance | 0.3–1.0 MΩ - defines loading effect on high-impedance sources such as piezoelectric sensors |
| Output Short-Circuit Duration | Continuous - allows safe operation during transient overloads in motor control feedback paths |
Pinout & Package
LM1558H uses the 8-lead TO-99 metal can package (TI package code LMC), with hermetic sealing and low thermal resistance for high-reliability mounting. Pin 1 is identified by a dot or beveled edge; the can body serves as the exposed metal case connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Amplifier A) | Accepts negative feedback or signal inversion path for first op-amp channel |
| 2 | Non-Inverting Input (Amplifier A) | Reference or positive signal input for differential gain configuration |
| 3 | Output (Amplifier A) | Drives loads up to ±10 V into 2 kΩ; requires external decoupling for stability |
| 4 | V− Supply | Common negative rail for both amplifiers; must be bypassed to ground near package |
| 5 | Non-Inverting Input (Amplifier B) | Independent input for second channel; shares no internal nodes with Amplifier A |
| 6 | Inverting Input (Amplifier B) | Second channel's feedback or signal inversion node |
| 7 | Output (Amplifier B) | Fully independent output stage; supports simultaneous dual-channel signal processing |
| 8 | V+ Supply | Common positive rail; shared bias network derives quiescent current for both amplifiers |
Key Features
| Feature | Design Value |
|---|---|
| No frequency compensation required | Enables stable unity-gain operation without external capacitors - reduces BOM count and layout sensitivity |
| Wide common-mode input range | ±12 V with ±15 V supplies - accommodates unbuffered transducer outputs and high-side sensing |
| Short-circuit protection | Prevents latch-up or thermal runaway during output faults - essential for unattended field deployments |
| Hermetic TO-99 packaging | Provides moisture and particle immunity for long-term reliability in harsh environmental enclosures |
| High CMRR and PSRR | 70–90 dB CMRR and 77–96 dB PSRR - maintains signal integrity in electrically noisy avionics bays |
Applications
| Aerospace Telemetry Signal Conditioning | Industrial Temperature Sensor Interface |
|---|---|
Use Scenario: Amplifying low-level thermocouple and RTD signals in satellite payload telemetry modules operating across −55°C to +125°C. IC Role / Device Role / Timing Role: Dual-channel DC-coupled instrumentation amplifier providing gain and offset adjustment before ADC sampling. Use Value: Guaranteed parametric performance across full military temperature range eliminates calibration drift in orbital thermal cycling. | Use Scenario: Signal conditioning for 4–20 mA loop-powered temperature transmitters in oil & gas refinery control cabinets. IC Role / Device Role / Timing Role: Dual op-amp implementing current-to-voltage conversion and linearization circuitry. Use Value: TO-99 package withstands high ambient temperatures and EMI from nearby variable-frequency drives. |
| Military Radar Receiver Front-End | Downhole Drilling Instrumentation |
Use Scenario: Low-noise pre-amplification of IF signals in airborne radar receivers subject to shock, vibration, and wide thermal excursions. IC Role / Device Role / Timing Role: First-stage gain block with controlled bandwidth and minimal phase shift in heterodyne receiver chains. Use Value: No external compensation simplifies layout in constrained RF shielded enclosures while maintaining stability. | Use Scenario: Analog signal processing in borehole logging tools exposed to >125°C wellbore temperatures and high-pressure fluid ingress risk. IC Role / Device Role / Timing Role: Dual-channel buffer and filter driver for piezoresistive pressure and gamma-ray detector outputs. Use Value: Hermetic TO-99 construction prevents moisture-induced parameter shift during prolonged downhole deployment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM1558J | MIL-STD-883 Class B tested; identical electrical specs but with additional screening and traceability documentation | Required for DoD procurement contracts mandating Class B conformance and lot traceability | Select LM1558J when formal qualification evidence per RETS 1558V is contractually required |
| MC1558G | Same TO-99 package and −55°C to +125°C rating; manufactured by ON Semiconductor with identical pinout and electrical behavior | Used in legacy Motorola-design systems where second-source assurance is mandated | Choose MC1558G for cross-manufacturer supply chain resilience without design change |
Compared with LM1558J and MC1558G, the LM1558H offers identical core performance and TO-99 packaging but targets applications where full MIL-STD-883 Class B testing is not mandated - balancing cost, availability, and military-grade reliability.
Availability
LM1558H is available at Aetrix Electronics and suitable for aerospace telemetry signal conditioning, industrial temperature sensor interface, and military radar receiver front-end designs requiring stable component supply under extended temperature and high-reliability constraints.
Supply support for LM1558H 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 U.S.-based semiconductor company specializing in analog and embedded processing technologies, with leadership in high-reliability op-amps, data converters, and power management ICs.
The LM1558H belongs to TI's legacy military op-amp product line, designed specifically for analog signal conditioning in defense, aerospace, and industrial systems demanding guaranteed performance across extreme temperature ranges and long service life.
FAQ
What is the maximum supply voltage rating for LM1558H?
The LM1558H has an absolute maximum supply voltage rating of ±22 V, allowing operation with higher headroom than commercial-grade counterparts like the LM1458 (±18 V). This enables robust signal handling in high-voltage analog stages without external attenuation, and is confirmed in the Absolute Maximum Ratings table of the SNOSBU4D datasheet. The LM1558H maintains specified performance across its full −55°C to +125°C range at these supply levels.
Does LM1558H require external frequency compensation capacitors?
No, the LM1558H does not require external frequency compensation capacitors due to its internally compensated design. This feature is explicitly listed in the FEATURES section of the SNOSBU4D datasheet and verified across all operating conditions within its military temperature range. The absence of external compensation simplifies PCB layout, reduces component count, and improves reliability in mission-critical analog circuits where capacitor aging or failure is unacceptable.
What package type is used for LM1558H and how is pin 1 identified?
The LM1558H uses the 8-lead TO-99 metal can package (TI package code LMC), with hermetic sealing and a metal case that serves as a thermal and EMI shield. Pin 1 is identified by a dot or beveled edge on the package top surface, as shown in Figure 1 of the SNOSBU4D datasheet. The TO-99 outline drawing confirms lead diameter ≤0.055 inches and height ≤5.72 mm, ensuring compatibility with standard military socketing and soldering practices.
How does LM1558H differ from LM1458 in terms of temperature rating and specifications?
The LM1558H is rated for −55°C to +125°C operation with guaranteed specifications across that full range, whereas the LM1458 is specified only from 0°C to +70°C. Electrical parameters such as input offset voltage, supply current, and voltage gain are tested and warranted across their respective temperature ranges - meaning LM1558H maintains performance in extreme environments where LM1458 would be out-of-spec. Both share identical pinout and basic functionality.
Is LM1558H RoHS compliant and what is its lead finish?
The LM1558H is not RoHS compliant, as indicated in TI's PACKAGE OPTION ADDENDUM where its RoHS status is marked "No". Its lead finish is unspecified in public documentation and requires direct consultation with TI for material composition details; TI recommends contacting their sales office for compliance documentation and alternative RoHS-compliant variants if required for new designs.
LM1558H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- TO-99-8 Metal Can
- Packaging:
- Box
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 0.5V/µs
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 200 nA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 3mA (x2 Channels)
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 44 V
- Voltage - Supply Span (Max):
- 44 V
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-99-8
LM1558H FAQ
1.How can I place an order for LM1558H through Aetrix?
Please submit a Request for Quotation (RFQ) for LM1558H on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LM1558H reliable?
The price and inventory of LM1558H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM1558H is usually 5 days.
3.What payment methods are accepted for LM1558H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM1558H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM1558H?
LM1558H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM1558H order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LM1558H?
For technical support, including LM1558H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM1558H requirements.
6.How does Aetrix verify that LM1558H is sourced from the original manufacturer or authorized distributors?
All LM1558H products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LM1558H meets industry standards.
7.What is the process for return or replacement of LM1558H?
All LM1558H units undergo pre-shipment inspection (PSI). If there is an issue with LM1558H, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LM1558H part is unused and in its original packaging.
Return procedure for LM1558H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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