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onsemi MC1458D
- Part No.:
- MC1458D
- Manufacturer:
- onsemi
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MC1458D.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:7,068
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Product details
Overview
MC1458D from STMicroelectronics is a high-performance, monolithic dual operational amplifier designed for analog signal conditioning in industrial and instrumentation systems. It delivers large input voltage range (±12 V), high open-loop gain (50–200 V/mV), and 1 MHz unity-gain bandwidth, with no external frequency compensation required. Used in active filtering and precision summing circuits operating from ±15 V supplies.
For engineers reviewing the MC1458D datasheet, MC1458D pinout, MC1458D application, or MC1458D equivalent, key selection criteria include input offset voltage (1–6 mV), slew rate (0.2–0.8 V/µs), output swing (±10 to ±14 V into 2–10 kΩ), common-mode rejection (70–90 dB), and SO8 package compatibility with legacy 1458 footprints.
Technical Context
The MC1458D integrates two independent high-gain op-amps on a single silicon die with matched internal transistor pairs. Its architecture supports rail-to-rail input common-mode range (±12 V) and provides short-circuit protected outputs capable of sourcing up to 35 mA continuously.
It operates over ±3 V to ±22 V supply ranges, with specified performance at ±15 V. The device exhibits 65° phase margin and 11 dB gain margin under unity-gain conditions, enabling stable operation without external compensation components in standard feedback configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | ±3 V to ±22 V - supports wide analog supply rails including ±15 V industrial standards |
| Input Offset Voltage | 1–6 mV - determines DC error in precision integrators and low-level sensor amplifiers |
| Slew Rate | 0.2–0.8 V/µs - limits full-power bandwidth to 14 kHz at ±10 V output swing |
| Unity-Gain Bandwidth | 1 MHz - sets maximum stable closed-loop bandwidth for gain ≥1 configurations |
| CMRR | 70–90 dB - ensures rejection of common-mode noise in differential input stages |
| Output Short-Circuit Current | 10–35 mA - enables direct driving of moderate loads without external current limiting |
| Input Bias Current | 30–800 nA - compatible with high-impedance sensor interfaces and RC timing networks |
Pinout & Package
MC1458D is housed in an SO8 (Small Outline 8-pin) surface-mount package per ECOPACK® specifications, with 1.27 mm pitch, 4.9 mm width, and 6.0 mm length. Pin 1 marked by notch or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output A | Amplified output of first op-amp channel; drives external load or feedback network |
| 2 | Inverting Input A | Primary negative feedback node for Channel A; sets gain and stability |
| 3 | Non-inverting Input A | Reference input for Channel A; accepts sensor signals or reference voltages |
| 4 | V− Supply | Negative power rail connection shared by both amplifiers |
| 5 | Non-inverting Input B | Reference input for Channel B; electrically isolated from Channel A inputs |
| 6 | Inverting Input B | Negative feedback node for Channel B; supports independent gain configuration |
| 7 | Output B | Amplified output of second op-amp channel; usable for dual-path signal processing |
| 8 | V+ Supply | Positive power rail connection shared by both amplifiers |
Key Features
| Feature | Design Value |
|---|---|
| No external frequency compensation required | Internally compensated for unity-gain stability - eliminates need for external capacitor and simplifies PCB layout |
| Large input common-mode voltage range | ±12 V at ±15 V supply - allows direct interfacing with bipolar sensors and transducers without level-shifting |
| Short-circuit protected outputs | Continuous 35 mA source capability - prevents latch-up or thermal damage during overload or miswiring |
| High open-loop gain | 50–200 V/mV - enables precise closed-loop gain accuracy and low distortion in active filters |
| Low input offset current | 2–300 nA - preserves signal integrity in high-impedance photodiode or piezoelectric sensor front-ends |
Applications
| Active Low-Pass Filter | Precision Summing Amplifier |
|---|---|
Use Scenario: Filtering 50/60 Hz noise from biomedical electrode signals before ADC sampling. IC Role / Device Role / Timing Role: Dual-channel configured as 2nd-order Sallen-Key topology with matched gain and cutoff frequency. Use Value: 1 MHz GBW and 0.8 V/µs slew rate support ≤10 kHz filter design with <0.02% THD at 1 kHz. | Use Scenario: Combining four 4–20 mA process current loops into a single calibrated analog output. IC Role / Device Role / Timing Role: First op-amp converts currents to voltage; second performs weighted sum with 1% resistor matching. Use Value: 1–6 mV input offset ensures ≤0.1% full-scale error across temperature; ±12 V input range accommodates loop compliance margins. |
| Voltage Follower Buffer | Function Generator Integrator |
Use Scenario: Isolating a high-impedance pH probe output from downstream multiplexer loading effects. IC Role / Device Role / Timing Role: Unity-gain buffer per channel to preserve signal fidelity and prevent drift. Use Value: 0.3–2 MΩ input resistance and 70–90 dB CMRR reject ground-loop interference in lab-grade measurement setups. | Use Scenario: Generating linear ramp waveforms in analog test equipment using triangle-to-sine conversion. IC Role / Device Role / Timing Role: Precision integrator stage with matched capacitor and low-drift op-amp core. Use Value: 1–6 mV offset and 30–800 nA bias current minimize ramp time error and baseline drift over 100 ms cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM358DT | Single-supply rated (3–30 V), lower GBP (1.1 MHz), higher input offset (2–7 mV) | Preferred for battery-powered or 0–5 V microcontroller systems; not suitable for symmetric ±15 V analog backplanes | Select when cost-sensitive single-supply operation is required and rail-to-rail input is unnecessary |
| TL082CD | JFET-input (50 pA bias), higher GBP (3 MHz), requires external compensation for unity-gain stability | Better for high-impedance photodiode amps or wideband AC-coupled stages; adds design complexity due to compensation | Select when ultra-low input current or >1 MHz bandwidth is mandatory and layout space permits compensation components |
Compared with LM358DT and TL082CD, the MC1458D offers optimal balance of bipolar input performance, internal compensation, and ±15 V compatibility - making it ideal for legacy industrial analog signal chains where stability and supply symmetry are critical.
Availability
MC1458D is available at Aetrix Electronics and suitable for active filtering, precision summing, voltage buffering, and function generator integrator applications requiring stable component supply and long-term industrial availability.
Supply support for MC1458D 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, specializing in analog, power, microcontrollers, and automotive ICs with strong industrial and automotive focus.
The MC1458D belongs to ST's legacy high-reliability analog amplifier portfolio, engineered for robustness in industrial control, test equipment, and instrumentation where long-lifecycle support and proven thermal stability are essential.
FAQ
Is MC1458D pin-compatible with older DIP-8 versions of MC1458?
Yes, the MC1458D in SO8 matches the standard 1458 pinout (dual op-amp, shared supplies). Pin 1 (Output A) to Pin 8 (V+) align exactly with DIP-8 mechanical layout, enabling drop-in replacement on redesigned PCBs using surface-mount assembly - provided pad geometry and thermal relief comply with SO8 footprint requirements.
What is the maximum safe operating temperature for continuous use?
The MC1458D is rated for continuous operation from −40 °C to +105 °C (industrial grade, MC1458IDT variant). The standard MC1458DT version operates from 0 °C to +70 °C. Both variants maintain full electrical specifications across their respective ranges, with thermal shutdown protection disabled but inherent short-circuit and SOA limits ensuring reliability within absolute max ratings.
Can MC1458D drive a 600 Ω audio line directly?
No - its 75 Ω output impedance and ±10 V swing into 2 kΩ limit practical drive capability to ≥2 kΩ loads. Driving 600 Ω causes excessive voltage droop and distortion. For audio line driving, use a dedicated line driver IC or add a discrete emitter-follower buffer stage to maintain signal integrity and meet professional audio impedance standards.
Does MC1458D require external compensation capacitors?
No - the MC1458D is internally compensated for unity-gain stability. Adding external compensation capacitors degrades bandwidth and may cause instability. It achieves 65° phase margin and 11 dB gain margin at unity gain with 100 pF load, making it suitable for standard inverting/non-inverting configurations without modification.
MC1458D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- 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:
- 80 nA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 3.4mA (x2 Channels)
- Current - Output / Channel:
- 25 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MC1458D FAQ
1.How can I place an order for MC1458D through Aetrix?
Please submit a Request for Quotation (RFQ) for MC1458D 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 MC1458D reliable?
The price and inventory of MC1458D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC1458D is usually 5 days.
3.What payment methods are accepted for MC1458D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC1458D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC1458D?
MC1458D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC1458D 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 MC1458D?
For technical support, including MC1458D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC1458D requirements.
6.How does Aetrix verify that MC1458D is sourced from the original manufacturer or authorized distributors?
All MC1458D 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 MC1458D meets industry standards.
7.What is the process for return or replacement of MC1458D?
All MC1458D units undergo pre-shipment inspection (PSI). If there is an issue with MC1458D, 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 MC1458D part is unused and in its original packaging.
Return procedure for MC1458D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MC1458D Tags
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