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STMicroelectronics MC1458IN
- Part No.:
- MC1458IN
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MC1458IN.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8MINI DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,571
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Product details
Overview
MC1458IN from STMicroelectronics is a high-performance, dual operational amplifier in an 8-pin DIP package, featuring ±15 V supply operation, 1 MHz unity-gain bandwidth, 0.8 V/µs slew rate, and ±12 V input common-mode range. It serves as a general-purpose analog signal conditioner in feedback circuits, active filters, and voltage followers.
For engineers reviewing the MC1458IN datasheet, MC1458IN pinout, MC1458IN application, or MC1458IN equivalent, key selection criteria include input offset voltage (≤5 mV typ), output short-circuit current (10–35 mA), phase margin (65°), channel separation (120 dB), and SO8/DIP8 package compatibility across temperature grades.
Technical Context
The MC1458IN integrates two independent high-gain op-amps on a single monolithic die with no external frequency compensation required. Its internal architecture supports rail-to-rail input common-mode range (±12 V) and delivers 1 MHz gain-bandwidth product with 65° phase margin at unity gain.
It operates over 0 °C to 70 °C (MC1458DT) or –40 °C to 105 °C (MC1458IDT), with input bias current ≤500 nA (typ 30 nA), CMRR ≥70 dB, and supply rejection ≥77 dB - enabling stable performance in noisy industrial analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | ±22 V max; supports ±15 V nominal operation for wide dynamic range signal conditioning |
| Unity-Gain Bandwidth | 1 MHz; enables stable closed-loop operation up to audio frequencies with minimal phase lag |
| Slew Rate | 0.8 V/µs typ; limits large-signal transient response but sufficient for DC–10 kHz applications |
| Input Offset Voltage | 5 mV typ; defines DC error floor in precision summing or integrator configurations |
| Channel Separation | 120 dB; ensures minimal crosstalk between dual amplifiers in multi-channel instrumentation |
| Output Short-Circuit Current | 35 mA max; provides robust fault tolerance without external current limiting |
| Common-Mode Rejection | 70 dB min; maintains accuracy when amplifying small differential signals in presence of noise |
Pinout & Package
MC1458IN is housed in an 8-pin plastic dual in-line package (DIP-8) with standard through-hole mounting and 0.3-inch body width. Pin 1 is marked by a notch or dot; pins are numbered counter-clockwise from top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting input of Amp A | Accepts negative feedback or signal inversion path for first op-amp |
| 2 | Non-inverting input of Amp A | Reference or positive signal input for first op-amp; high-impedance node |
| 3 | Output of Amp A | Drives load up to 2 kΩ; short-circuit protected to 35 mA |
| 4 | Negative supply (V−) | Connects to −15 V rail; shared reference for both amplifiers |
| 5 | Non-inverting input of Amp B | Independent positive input for second op-amp; same impedance as Pin 2 |
| 6 | Inverting input of Amp B | Configurable for feedback or signal inversion of second amplifier |
| 7 | Output of Amp B | Electrically isolated output channel; 120 dB isolation from Pin 3 |
| 8 | Positive supply (V+) | Connects to +15 V rail; supplies both amplifiers from common rail |
Key Features
| Feature | Design Value |
|---|---|
| No external frequency compensation required | Internally compensated for unity-gain stability - eliminates need for external capacitor |
| Large input voltage range | ±12 V common-mode range allows direct interfacing with ±10 V sensor outputs |
| Short-circuit protection | Continuous output short-circuit tolerance prevents latch-up or thermal failure |
| No latch-up | CMOS-compatible input stage avoids destructive parasitic thyristor conduction |
| High open-loop gain | 200 V/mV typical gain ensures <0.05% closed-loop error in precision gain stages |
Applications
| Summing Amplifier | Voltage Follower |
|---|---|
Use Scenario: Combining multiple sensor outputs (e.g., thermocouple, strain gauge, pressure transducer) into a single analog sum before ADC conversion. IC Role / Device Role / Timing Role: Dual op-amp configured as inverting summing junction with matched feedback resistors; second amp buffers summed output. Use Value: Enables analog signal fusion without digital processing overhead; ±12 V input range accommodates bipolar sensor outputs directly. | Use Scenario: Isolating high-impedance pH probe or photodiode circuitry from downstream filter or sampling stages. IC Role / Device Role / Timing Role: First amplifier wired as unity-gain buffer; second used for optional gain-stage conditioning or reference buffering. Use Value: Input resistance >0.3 MΩ and low bias current (30 nA typ) preserve signal integrity from microcurrent sources. |
| Active Filtering | Function Generator |
Use Scenario: Implementing 2nd-order low-pass or band-pass filters in audio test equipment or sensor signal conditioning. IC Role / Device Role / Timing Role: Each op-amp implements one pole in cascaded topology; internal compensation ensures stable filter Q-factor. Use Value: 1 MHz GBW and 65° phase margin allow accurate filter cutoff up to 100 kHz without peaking or oscillation. | Use Scenario: Generating triangle/square waveforms in lab-grade function generators using integrator-comparator topology. IC Role / Device Role / Timing Role: One op-amp acts as integrator; the other functions as comparator with hysteresis; shared supply rails simplify timing alignment. Use Value: 0.8 V/µs slew rate sets maximum linear ramp rate; 120 dB channel separation prevents waveform distortion from inter-channel coupling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM358N | Single-supply only (3–30 V), lower slew rate (0.3 V/µs), no dual ±15 V support | Not suitable for bipolar analog front-ends requiring symmetric rails | Select when cost-sensitive, single-rail systems dominate and ±15 V operation is unnecessary |
| TL082CP | JFET-input (lower Iib = 30 pA), higher slew rate (13 V/µs), requires external compensation | Better for high-Z source buffering but less stable in uncompensated unity-gain configs | Prefer for ultra-low bias current needs where layout permits compensation capacitor placement |
Compared with LM358N and TL082CP, MC1458IN uniquely balances ±15 V operation, internal compensation, and 120 dB channel separation - making it optimal for legacy industrial analog boards needing drop-in replacement stability without redesign.
Availability
MC1458IN is available at Aetrix Electronics and suitable for industrial control panels, legacy test equipment refurbishment, and analog sensor interface modules requiring stable component supply across extended temperature ranges.
Supply support for MC1458IN 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, power, MCU, and sensor solutions for industrial, automotive, and consumer markets.
The MC1458IN belongs to ST's legacy analog amplifier portfolio, engineered for reliability in long-lifecycle industrial instrumentation and maintenance-critical analog subsystems.
FAQ
Is MC1458IN pin-compatible with MC1458DT?
Yes - MC1458IN and MC1458DT share identical DIP-8 pinout, electrical specifications, and absolute maximum ratings. The "IN" suffix denotes the industry-standard 8-pin plastic DIP package, while "DT" refers to the SO-8 surface-mount variant; both are functionally interchangeable in through-hole designs.
What is the maximum safe operating temperature for MC1458IN?
The MC1458IN is rated for 0 °C to 70 °C ambient operating temperature per its MC1458DT ordering code. Exceeding 70 °C risks parametric drift in input offset voltage and gain accuracy; thermal derating of power dissipation below 300 mW is required above 50 °C.
Can MC1458IN drive a 600 Ω audio line?
No - MC1458IN specifies RL ≥ 2 kΩ for full output swing (±10 V). Driving 600 Ω causes output clipping and increased THD (>0.02%) due to limited output current (35 mA max); a dedicated line driver or buffer stage is required for professional audio loads.
Does MC1458IN require external compensation capacitors?
No - the MC1458IN is internally compensated for unity-gain stability. Adding external compensation capacitors will degrade bandwidth and phase margin; the device achieves 1 MHz GBW and 65° phase margin without any external components in standard configurations.
MC1458IN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 0.8V/µs
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 30 nA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 2.3mA
- Current - Output / Channel:
- 25 mA
- Voltage - Supply Span (Min):
- 5 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-Mini DIP
MC1458IN FAQ
1.How can I place an order for MC1458IN through Aetrix?
Please submit a Request for Quotation (RFQ) for MC1458IN 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 MC1458IN reliable?
The price and inventory of MC1458IN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC1458IN is usually 5 days.
3.What payment methods are accepted for MC1458IN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC1458IN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC1458IN?
MC1458IN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC1458IN 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 MC1458IN?
For technical support, including MC1458IN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC1458IN requirements.
6.How does Aetrix verify that MC1458IN is sourced from the original manufacturer or authorized distributors?
All MC1458IN 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 MC1458IN meets industry standards.
7.What is the process for return or replacement of MC1458IN?
All MC1458IN units undergo pre-shipment inspection (PSI). If there is an issue with MC1458IN, 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 MC1458IN part is unused and in its original packaging.
Return procedure for MC1458IN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MC1458IN Tags
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