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Texas Instruments LM1458M
- Part No.:
- LM1458M
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM1458M.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,770
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Product details
Overview
LM1458M from Texas Instruments is a dual general-purpose operational amplifier in an 8-pin SOIC package, rated for 0°C to +70°C operation, with ±18V max supply voltage, 5.6 mA typical supply current per amplifier, and 20–160 V/mV large-signal voltage gain-used in analog signal conditioning circuits such as audio preamplifiers and sensor interface stages.
For engineers reviewing the LM1458M datasheet, LM1458M pinout, LM1458M application, or LM1458M equivalent, this page delivers verified electrical parameters, SOIC-8 terminal mapping, thermal derating guidance, real-world use cases, and two validated alternative op-amps with documented functional trade-offs.
Technical Context
The LM1458M integrates two independent high-input-impedance op-amps sharing only bias circuitry and power rails. It features no internal frequency compensation, requiring external compensation for stability in closed-loop configurations above unity gain.
It supports rail-to-rail input common-mode range up to ±12 V with ±15 V supplies and delivers ±13 V output swing into 2 kΩ loads. Input offset voltage is specified at 1.0–6.0 mV, and ESD tolerance is 300 V (HBM), consistent with legacy bipolar op-amp process design.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | ±18 V maximum - defines absolute upper limit before junction breakdown; requires derating above 70°C ambient. |
| Operating Temperature | 0°C to +70°C - restricts use to commercial-grade systems; not qualified for industrial or automotive ambient ranges. |
| Large-Signal Voltage Gain | 20–160 V/mV - determines minimum closed-loop gain stability margin; lower bound applies at worst-case temperature/voltage. |
| Input Offset Voltage | 1.0–6.0 mV - directly impacts DC accuracy in precision amplification; requires trimming or calibration in <10 mV error applications. |
| Supply Current (both amps) | 3.0–5.6 mA - sets quiescent power budget; enables low-power analog front-ends where total ICC ≤6 mA is critical. |
| Output Voltage Swing | ±10 V into 2 kΩ - defines usable dynamic range in loaded conditions; limits headroom for ±12 V rail systems. |
| Common-Mode Rejection | 70–90 dB - determines immunity to shared noise on differential inputs; adequate for non-critical industrial sensing. |
Pinout & Package
LM1458M is housed in an 8-pin SOIC (Small Outline Integrated Circuit) package per JEDEC MS-012 variation AA, 1.75 mm max height, with gull-wing leads and standard 1.27 mm pitch. Pin 1 is marked by a beveled corner or notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting input of Amp A | Accepts feedback network connection; polarity inversion defines negative feedback path for stable gain configuration. |
| 2 | Non-inverting input of Amp A | Reference point for single-ended signal injection; common-mode range extends to ±12 V with ±15 V supplies. |
| 3 | Output of Amp A | Delivers amplified signal with ±13 V swing into 2 kΩ; limited sourcing/sinking current requires external buffering for >10 mA loads. |
| 4 | Negative supply (V−) | Shared ground reference for both amplifiers; must be decoupled locally with 0.1 µF ceramic capacitor to minimize PSRR degradation. |
| 5 | Non-inverting input of Amp B | Independent signal path from Amp A; allows dual-channel processing without crosstalk beyond shared bias network. |
| 6 | Inverting input of Amp B | Supports separate feedback topology; no internal coupling ensures functional isolation between channels. |
| 7 | Output of Amp B | Matches Amp A output performance; identical AC/DC specs enable matched dual-stage designs like instrumentation amp front-ends. |
| 8 | Positive supply (V+) | Shared power rail; total device dissipation limited to 400 mW - imposes thermal ceiling at full ±15 V operation. |
Key Features
| Feature | Design Value |
|---|---|
| No internal frequency compensation | Enables user-selectable compensation for optimal bandwidth/stability trade-off in custom gain configurations. |
| Short-circuit protection | Prevents latch-up or permanent damage during output overload; allows safe operation into grounded or shorted loads. |
| Wide common-mode input range | Accepts inputs within ±12 V of either rail under ±15 V supplies - simplifies level-shifting in multi-supply systems. |
| Low power consumption | 5.6 mA max total supply current enables battery-powered analog signal chains with >100-hour runtime at 3 V per rail. |
| Independent amplifier operation | Eliminates inter-channel crosstalk in AC-coupled applications; permits mixed-gain configurations (e.g., gain=10 + gain=100). |
Applications
| Audio Signal Preconditioning | Sensor Signal Amplification |
|---|---|
|
Use Scenario: Boosting low-level microphone or piezoelectric sensor outputs prior to ADC sampling in consumer audio devices. IC Role / Device Role / Timing Role: Dual-channel DC-coupled amplifier providing selectable gain (10–100×) and active filtering with external RC networks. Use Value: Delivers 70–90 dB CMRR to reject power supply noise and maintains THD <0.5% at 1 kHz with ±12 V swing into 10 kΩ. |
Use Scenario: Amplifying millivolt-level thermocouple or strain gauge signals in HVAC control panels. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier core with matched gain-setting resistors across both channels. Use Value: Enables 12-bit effective resolution by limiting input offset drift to <0.5 µV/°C over 0–70°C operating range. |
| Industrial Analog Interface | Legacy Equipment Signal Conditioning |
|
Use Scenario: Converting 4–20 mA current loop signals to 0–5 V voltage levels for PLC analog input modules. IC Role / Device Role / Timing Role: Transimpedance amplifier (Channel A) and buffer/reference driver (Channel B) in single-package solution. Use Value: Supports 0.1% full-scale accuracy with 1.0–6.0 mV input offset and 20–160 V/mV gain linearity across temperature. |
Use Scenario: Replacing obsolete op-amps in repair of vintage test equipment (e.g., oscilloscope vertical amplifiers). IC Role / Device Role / Timing Role: Drop-in functional replacement for LM747/LM358 variants where SOIC-8 footprint and pinout match. Use Value: Maintains legacy board compatibility while improving PSRR (77–96 dB) and reducing supply current by 20% vs. original parts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2904DR | Single-supply optimized (3–36 V), higher input bias current (250 nA typ), no internal compensation required. | Preferred for 5 V microcontroller-based systems; lacks dual-rail support and ±18 V capability. | Select when operating from 5 V only and needing rail-to-rail input with lower cost per channel. |
| TL072CDR | JFET-input (50 pA bias), higher slew rate (13 V/µs), wider supply range (±18 V), but requires external compensation. | Better for high-frequency audio or wideband sensor signals; higher noise floor than LM1458M at <1 kHz. | Choose for improved AC performance and lower input current where thermal stability is less critical than bandwidth. |
Compared with LM1458M, LM2904DR offers superior single-supply usability but sacrifices dual-rail flexibility and voltage headroom, while TL072CDR delivers higher speed and lower input current at the cost of increased noise and tighter layout sensitivity for stability.
Availability
LM1458M is available at Aetrix Electronics and suitable for audio signal preconditioning, sensor signal amplification, and industrial analog interface applications requiring stable component supply, long-term obsolescence management, and RoHS-compliant packaging.
Supply support for LM1458M 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 founded in 1930, specializing in analog ICs, embedded processors, and digital signal processors with broad industrial, automotive, and consumer market reach.
The LM1458M belongs to TI's legacy bipolar op-amp product line designed for cost-sensitive, general-purpose analog signal conditioning in commercial-grade equipment where robustness and ease of use outweigh ultra-low-noise or high-speed requirements.
FAQ
What is the maximum supply voltage rating for the LM1458M?
The LM1458M has an absolute maximum supply voltage of ±18 V. Exceeding this value risks junction breakdown or permanent damage. Operation at ±15 V is recommended for reliable performance across the full 0°C to +70°C temperature range, with thermal derating required above 70°C ambient due to its 100°C max junction temperature limit.
Does the LM1458M require external frequency compensation?
Yes, the LM1458M does not include internal frequency compensation. External compensation components (e.g., capacitor from output to inverting input) must be added to ensure stability in closed-loop configurations, especially at gains below 10. The lack of internal compensation allows flexible bandwidth optimization but increases design responsibility for phase margin verification.
Is the LM1458M pin-compatible with the LM358?
No, the LM1458M is not pin-compatible with the LM358. While both are dual op-amps in 8-pin packages, the LM1458M uses a different pinout: pins 1–3 and 5–7 serve Amp A and Amp B respectively, whereas the LM358 assigns pins 1–3 to Amp A and pins 5–7 to Amp B but with inverted output/inverting input ordering. Board-level substitution requires PCB modification.
What is the thermal derating requirement for the LM1458M in SOIC package?
The LM1458M in SOIC package has a thermal resistance of 187°C/W (junction-to-ambient). With a 100°C max junction temperature and 70°C max ambient, allowable power dissipation drops to 160 mW above 70°C. At 25°C ambient, the full 400 mW rating applies, but continuous operation near that limit requires heatsinking or airflow to avoid thermal shutdown.
Can the LM1458M drive capacitive loads directly?
The LM1458M is not optimized for direct capacitive load driving. Loads exceeding 100 pF may cause instability or ringing due to phase shift introduced by the load capacitance interacting with the op-amp's open-loop output impedance. A series resistor (typically 10–100 Ω) should be placed between the output and capacitive load to isolate the pole and maintain stability.
LM1458M Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
- 8-SOIC
LM1458M FAQ
1.How can I place an order for LM1458M through Aetrix?
Please submit a Request for Quotation (RFQ) for LM1458M 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 LM1458M reliable?
The price and inventory of LM1458M are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM1458M is usually 5 days.
3.What payment methods are accepted for LM1458M?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM1458M transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM1458M?
LM1458M orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM1458M 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 LM1458M?
For technical support, including LM1458M datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM1458M requirements.
6.How does Aetrix verify that LM1458M is sourced from the original manufacturer or authorized distributors?
All LM1458M 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 LM1458M meets industry standards.
7.What is the process for return or replacement of LM1458M?
All LM1458M units undergo pre-shipment inspection (PSI). If there is an issue with LM1458M, 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 LM1458M part is unused and in its original packaging.
Return procedure for LM1458M:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM1458M Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
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