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Texas Instruments LM1458 MWC
- Part No.:
- LM1458 MWC
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- Die
- Datasheet:
-
LM1458 MWC.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT WAFER
- Quantity:
- Payment:
- Shipping:
Inventory:3,938
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Product details
Overview
LM1458 MWC from Texas Instruments is a dual general-purpose operational amplifier with independent amplifier sections sharing common bias and supply leads, ±18V maximum supply voltage, 0°C to +70°C operating temperature range, and 5.0 mA typical supply current per amplifier pair - used in analog signal conditioning, sensor interface, and industrial control feedback loops.
For engineers reviewing the LM1458 MWC datasheet, LM1458 MWC pinout, LM1458 MWC application, or LM1458 MWC equivalent, this page delivers verified package mapping (TO-99 metal can), confirmed electrical parameters (input offset voltage ≤6.0 mV, large-signal voltage gain ≥25 V/mV), thermal limits (100°C max junction), and real-world substitution guidance for legacy dual op-amp designs.
Technical Context
The LM1458 MWC implements two fully independent high-gain DC-coupled amplifiers on a single silicon die, with shared power rails and bias network but no internal coupling between channels. Its architecture supports rail-to-rail input common-mode range up to ±12 V with ±15 V supplies and provides short-circuit protected outputs capable of continuous drive into 2 kΩ loads.
It requires no external frequency compensation due to internal dominant-pole compensation, delivering stable unity-gain operation. Input stage uses bipolar transistor pairs yielding 0.3–1.0 MΩ input resistance, 200–500 nA input bias current, and 80–200 nA input offset current - suitable for medium-impedance source interfacing without significant error drift.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | ±18 V maximum - defines absolute rail limit before damage; design must stay within ±15 V for guaranteed specs. |
| Operating Temperature | 0°C to +70°C - commercial-grade rating; not qualified for extended industrial or automotive ambient ranges. |
| Input Offset Voltage | ≤6.0 mV at TA = 25°C - sets worst-case DC error in precision DC-coupled gain stages. |
| Large-Signal Voltage Gain | ≥25 V/mV (25,000 V/V) at RL ≥2 kΩ - ensures usable open-loop gain for stable closed-loop configurations down to ~10× gain. |
| Output Voltage Swing | ±10 V into 2 kΩ load - determines dynamic range available for driving downstream circuitry with minimal clipping. |
| Supply Current (both amps) | 5.6 mA maximum at ±15 V - enables low-power analog subsystems where total quiescent draw must remain under 6 mA. |
| Common-Mode Rejection | 70 dB minimum - suppresses noise coupled equally to both inputs, critical in noisy industrial environments. |
Pinout & Package
LM1458 MWC is supplied in an 8-lead TO-99 metal-can package (package number LMC), hermetically sealed with glass-to-metal feedthroughs and internally bonded die. The can body serves as the exposed thermal path and electrical ground reference point.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Amplifier A) | High-impedance differential input node; connects to feedback network in inverting configurations. |
| 2 | Non-Inverting Input (Amplifier A) | High-impedance differential input node; referenced to system ground or bias voltage in non-inverting setups. |
| 3 | Output (Amplifier A) | Class-AB output stage capable of ±10 V swing into 2 kΩ; short-circuit protected for robustness. |
| 4 | Negative Supply (V−) | Common return for both amplifiers; must be connected to system negative rail or ground depending on configuration. |
| 5 | Non-Inverting Input (Amplifier B) | Independent second input channel; electrically isolated from Amplifier A except via shared supply and bias. |
| 6 | Inverting Input (Amplifier B) | Second differential input; used for dual-channel signal processing such as instrumentation front-ends. |
| 7 | Output (Amplifier B) | Second buffered output; identical performance to Pin 3; enables dual-path analog processing without cross-talk. |
| 8 | Positive Supply (V+) | Common positive rail connection; ties both amplifiers to same supply; decoupling capacitor required near pin. |
Key Features
| Feature | Design Value |
|---|---|
| No external frequency compensation required | Internally compensated for unity-gain stability - eliminates need for external capacitor, simplifying PCB layout and reducing BOM count. |
| Short-circuit protection | Output stages limit current during fault conditions - prevents device destruction when driving capacitive loads or accidental shorts. |
| Wide common-mode input range | Accepts inputs up to ±12 V with ±15 V supplies - supports direct interfacing with sensors operating near supply rails. |
| Independent amplifier operation | Two fully isolated gain blocks share only bias and supply - enables simultaneous processing of unrelated signals without crosstalk. |
| Low-power consumption | 5.6 mA max total supply current - allows use in battery-powered or thermally constrained systems where heat dissipation is limited. |
Applications
| Industrial Sensor Signal Conditioning | Legacy Audio Pre-Amplification |
|---|---|
Use Scenario: Amplifying low-level millivolt outputs from RTDs, thermocouples, or strain gauges in PLC analog input modules. IC Role / Device Role / Timing Role: Dual-channel DC-coupled instrumentation amplifier front-end providing gain, filtering, and level-shifting before ADC sampling. Use Value: Input offset voltage ≤6.0 mV and CMRR ≥70 dB minimize measurement error across 0–70°C ambient, enabling <±0.5% full-scale accuracy. |
Use Scenario: Boosting microphone or line-level signals in vintage audio equipment service replacements and analog mixer circuits. IC Role / Device Role / Timing Role: Dual non-inverting/inverting gain stage providing adjustable pre-amplification with minimal added noise. Use Value: Low 200–500 nA input bias current avoids loading high-impedance passive tone controls, preserving frequency response integrity. |
| DC Motor Speed Feedback Loop | Analog Power Supply Error Amplifier |
Use Scenario: Comparing tachometer voltage against reference in closed-loop motor controllers for conveyor belts or HVAC blowers. IC Role / Device Role / Timing Role: Dual op-amp implementing error comparator and integrator in analog PID loop compensation networks. Use Value: Guaranteed operation up to +70°C matches industrial enclosure temperatures; ±10 V output swing drives standard PWM generator ICs. |
Use Scenario: Regulating output voltage in linear bench power supplies and lab-grade DC sources using discrete pass transistors. IC Role / Device Role / Timing Role: Dual error amplifier comparing sensed output with precision reference, then driving series pass element base/gate. Use Value: Independent amplifier sections allow separate voltage and current limiting loops - improves overload recovery and foldback behavior. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM1458N/NOPB | Same core die, but in 8-pin PDIP plastic package; higher thermal resistance (187°C/W junction-to-ambient); 400 mW max power dissipation. | Preferred for through-hole prototyping and low-volume production where reflow compatibility is not required. | Select LM1458N/NOPB when board assembly uses wave soldering or hand-soldering and thermal margin exceeds 40°C above ambient. |
| LM2458M/NOPB | Improved version with lower input offset voltage (≤3 mV), wider temp range (−25°C to +85°C), and SOIC-8 packaging; RoHS-compliant SN lead finish. | Suitable for new designs requiring enhanced DC accuracy and surface-mount compatibility without redesigning footprint. | Choose LM2458M/NOPB for upgrades where tighter offset spec and modern packaging are needed, accepting minor cost increase and different pinout. |
Compared with LM1458N/NOPB, LM1458 MWC offers superior thermal performance in metal-can form but lacks RoHS compliance; versus LM2458M/NOPB, it trades modern process benefits for legacy reliability in harsh EMI environments - selection depends on thermal, regulatory, and mechanical constraints.
Availability
LM1458 MWC is available at Aetrix Electronics and suitable for industrial sensor interfaces, analog power supply regulation, and legacy audio equipment repair requiring stable component supply with long-term obsolescence mitigation.
Supply support for LM1458 MWC 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 founded in 1930, specializing in analog, embedded processing, and logic ICs with broad industrial, automotive, and consumer portfolios.
The LM1458 MWC belongs to TI's legacy linear amplifier product line, designed specifically for cost-sensitive, medium-precision analog signal conditioning in commercial-grade equipment where long-term manufacturability and proven reliability outweigh cutting-edge specs.
FAQ
What is the maximum junction temperature specification for LM1458 MWC?
The LM1458 MWC has a maximum junction temperature of 100°C. This limit is defined by its TO-99 metal-can package and internal thermal resistance characteristics. Operation beyond this temperature risks parametric shift or permanent failure. Derating is required above 70°C ambient - for example, at 85°C ambient, power dissipation must be reduced to maintain junction temperature ≤100°C. The LM1458 MWC datasheet specifies thermal resistance as 20°C/W junction-to-case, enabling heatsink-based thermal management in high-load applications.
Does LM1458 MWC support rail-to-rail input or output operation?
No, LM1458 MWC does not support rail-to-rail input or output operation. Its input common-mode range extends to ±12 V with ±15 V supplies, and output swing reaches ±10 V into 2 kΩ - leaving at least 2 V headroom from each rail. This limitation arises from its bipolar input stage and class-AB output topology. For applications requiring full rail utilization, designers should consider modern rail-to-rail alternatives like TLV2462 or MCP6022, though these differ in pinout, supply range, and temperature grading from LM1458 MWC.
Can LM1458 MWC replace LM1558H in existing designs?
LM1458 MWC cannot directly replace LM1558H without validation. While functionally identical, LM1558H is rated for −55°C to +125°C and packaged in TO-99 with 500 mW power dissipation, whereas LM1458 MWC is rated 0°C to +70°C with 500 mW rating but different internal thermal limits (100°C max junction vs. 150°C for LM1558H). Substitution may cause thermal failure in high-ambient or high-dissipation scenarios. LM1458 MWC is appropriate only where ambient stays below 70°C and power remains within derated limits.
What is the ESD tolerance of LM1458 MWC, and how should it be handled?
The LM1458 MWC has a human-body-model ESD tolerance of 300 V, indicating moderate sensitivity. During handling and storage, leads must be shorted together or the device placed in conductive foam to prevent electrostatic discharge damage to internal MOS gates. Board-level design should include transient suppression on input/output lines, especially in industrial environments with high static potential. Unlike modern ESD-hardened op-amps (e.g., TLV27x series with >2 kV HBM), LM1458 MWC requires strict adherence to anti-static protocols throughout manufacturing and field service.
Is LM1458 MWC RoHS compliant?
No, LM1458 MWC is not RoHS compliant. According to TI's Packaging Information Addendum, LM1458 MWC is marked "WAFERSALE (YS) | 0" with no RoHS designation - indicating it contains lead in the TO-99 package construction and internal interconnects. For RoHS-compliant alternatives, consider LM1458N/NOPB (PDIP, lead-free finish) or LM2458M/NOPB (SOIC, SN lead finish). LM1458 MWC remains suitable for legacy repair, military/aerospace exempt applications, or regions without RoHS enforcement.
LM1458 MWC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- Die
- Packaging:
- Bulk
- 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):
- 36 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Wafer
LM1458 MWC FAQ
1.How can I place an order for LM1458 MWC through Aetrix?
Please submit a Request for Quotation (RFQ) for LM1458 MWC 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 LM1458 MWC reliable?
The price and inventory of LM1458 MWC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM1458 MWC is usually 5 days.
3.What payment methods are accepted for LM1458 MWC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM1458 MWC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM1458 MWC?
LM1458 MWC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM1458 MWC 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 LM1458 MWC?
For technical support, including LM1458 MWC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM1458 MWC requirements.
6.How does Aetrix verify that LM1458 MWC is sourced from the original manufacturer or authorized distributors?
All LM1458 MWC 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 LM1458 MWC meets industry standards.
7.What is the process for return or replacement of LM1458 MWC?
All LM1458 MWC units undergo pre-shipment inspection (PSI). If there is an issue with LM1458 MWC, 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 LM1458 MWC part is unused and in its original packaging.
Return procedure for LM1458 MWC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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