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STMicroelectronics MC1458IDT
- Part No.:
- MC1458IDT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MC1458IDT.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,196
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Product details
Overview
MC1458IDT from STMicroelectronics is a high-performance, dual operational amplifier in SO8 package, featuring ±12 V input common-mode range, 1 MHz unity-gain bandwidth, 0.2–0.8 V/µs slew rate, and ±105 °C operating temperature range. It serves as a general-purpose analog signal conditioner in precision instrumentation and active filter stages.
For engineers reviewing the MC1458IDT datasheet, MC1458IDT pinout, MC1458IDT application, or MC1458IDT equivalent, key selection criteria include input offset voltage (1–6 mV), supply current (2.3–6 mA), output short-circuit capability (10–35 mA), and SO8 thermal performance under industrial-temperature operation.
Technical Context
The MC1458IDT 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 stage operation up to ±12 V common-mode voltage and delivers 25–200 V/mV large-signal gain at ±10 V output swing into 2 kΩ load.
It exhibits 70–90 dB CMRR and SVRR across -40 °C to +105 °C, with 45 nV/√Hz input noise at 1 kHz and 65° phase margin for stable unity-gain configurations. Channel separation exceeds 120 dB, enabling low-crosstalk dual-channel signal processing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | ±22 V - supports wide dynamic range signal conditioning without rail clipping |
| Input Offset Voltage | 1–6 mV - determines DC accuracy in precision summing/integrating circuits |
| Unity-Gain Bandwidth | 1 MHz - sets maximum closed-loop bandwidth for stable AC-coupled amplifiers |
| Slew Rate | 0.2–0.8 V/µs - limits full-power output response time for 10–14 Vpp signals |
| Operating Temperature | -40 °C to +105 °C - qualified for industrial control and automotive under-hood environments |
| Output Short-Circuit Current | 10–35 mA - enables robust fault tolerance in feedback networks with low-impedance loads |
| Common-Mode Rejection | 70–90 dB - ensures immunity to shared-noise interference in differential sensor interfaces |
Pinout & Package
MC1458IDT is housed in an 8-pin SO8 (Small Outline) package with standard 1.27 mm pitch, 4.9 mm width, and 6.0 mm length. The package meets ECOPACK® environmental compliance standards and supports surface-mount reflow assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Amp 1) | Accepts negative feedback or signal inversion node for first op-amp |
| 2 | Non-Inverting Input (Amp 1) | Reference or positive signal input for first op-amp; common-mode range ±12 V |
| 3 | Output (Amp 1) | Delivers amplified signal with ±10–14 V swing into ≥2 kΩ load |
| 4 | V− Supply | Negative rail connection; supports ±22 V dual-supply operation |
| 5 | Non-Inverting Input (Amp 2) | Positive input for second op-amp; electrically isolated from Amp 1 inputs |
| 6 | Inverting Input (Amp 2) | Negative feedback node for second op-amp; matched input bias current (30–800 nA) |
| 7 | Output (Amp 2) | Independent output stage with same drive capability and short-circuit protection as Pin 3 |
| 8 | V+ Supply | Positive rail connection; shares supply with both amplifiers |
Key Features
| Feature | Design Value |
|---|---|
| No external frequency compensation required | Enables stable unity-gain operation without added capacitors or resistors |
| High large-signal voltage gain (25–200 V/mV) | Supports precise closed-loop gain setting with minimal error across temperature |
| Input common-mode range ±12 V | Allows direct interfacing with ±10 V sensor outputs or DACs without level-shifting |
| Short-circuit protected outputs | Prevents device damage during transient overloads or miswired feedback paths |
| Low input offset current (2–300 nA) | Minimizes DC error in high-impedance transducer amplifier applications |
Applications
| Instrumentation Amplifier Front-End | Active Low-Pass Filter Stage |
|---|---|
Use Scenario: Amplifying low-level thermocouple or strain gauge signals in data acquisition systems. IC Role / Device Role / Timing Role: Dual op-amp configured as precision non-inverting amplifier + buffer for noise rejection and impedance matching. Use Value: ±12 V input common-mode range accepts sensor offsets directly; 1–6 mV Vio maintains <0.1% gain error at 100× gain. | Use Scenario: 2nd-order Sallen-Key low-pass filtering of audio or sensor signals before ADC sampling. IC Role / Device Role / Timing Role: First op-amp as unity-gain integrator, second as gain-setting amplifier in feedback loop. Use Value: 1 MHz GBW supports cutoff frequencies up to ~100 kHz; 0.2–0.8 V/µs slew rate prevents distortion at 10 Vpp outputs. |
| Voltage-Controlled Oscillator Core | Industrial Analog Summing Node |
Use Scenario: Generating variable-frequency square/triangle waves in function generators or motor control timing circuits. IC Role / Device Role / Timing Role: Dual op-amp used as integrator and comparator in relaxation oscillator topology. Use Value: 65° phase margin ensures stable integration; channel separation >120 dB prevents timing jitter coupling between stages. | Use Scenario: Combining multiple 4–20 mA process signals into a single calibrated output in PLC analog I/O modules. IC Role / Device Role / Timing Role: Two independent summing amplifiers with precision resistor networks for weighted input addition. Use Value: Low input bias current (30–800 nA) avoids loading 4–20 mA loops; ±22 V supply headroom accommodates 24 V loop power rails. |
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 Vio (2–7 mV), wider temp range (-40 to +105 °C) | Preferred for battery-powered or 5 V microcontroller systems requiring rail-to-rail output | Select when single-supply operation and lower cost outweigh dual-supply precision needs |
| TL072CDT | JFET-input (Iib = 65 pA), higher GBP (3 MHz), lower noise (18 nV/√Hz), narrower temp range (0 to +70 °C) | Better suited for high-impedance audio preamps or low-noise sensor front-ends | Choose for ultra-low input current or wide-bandwidth AC applications where industrial temp rating is not required |
Compared with LM358DT and TL072CDT, MC1458IDT offers superior common-mode rejection (70–90 dB) and supply voltage rejection (77–90 dB) across industrial temperature, making it optimal for precision DC-coupled measurement systems where dual-supply stability is critical.
Availability
MC1458IDT is available at Aetrix Electronics and suitable for industrial automation, test equipment, and analog signal conditioning requiring stable component supply across extended temperature ranges.
Supply support for MC1458IDT 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, designing and manufacturing analog, MCU, power, and sensor solutions for industrial, automotive, and consumer markets.
The MC1458IDT belongs to ST's legacy precision analog amplifier product line, engineered for reliability in industrial-grade signal conditioning, measurement, and control applications where long-term parametric stability is essential.
FAQ
Is MC1458IDT pin-compatible with MC1458DT?
Yes, MC1458IDT and MC1458DT share identical SO8 pinout and electrical functionality. The only difference is temperature grade: MC1458IDT operates from -40 °C to +105 °C, while MC1458DT is rated for 0 °C to +70 °C. Both use the same schematic symbol and layout footprint.
Does MC1458IDT require external compensation capacitors?
No. The MC1458IDT is internally compensated for unity-gain stability, eliminating the need for external compensation components. This simplifies PCB layout and ensures consistent performance across temperature and unit-to-unit variation without tuning.
What is the maximum load capacitance MC1458IDT can drive without oscillation?
Per the datasheet, MC1458IDT is characterized with 100 pF load capacitance in slew rate and rise time tests. Driving >100 pF directly may degrade phase margin; for capacitive loads >100 pF, a series isolation resistor (typically 10–100 Ω) is recommended at the output to maintain stability.
Can MC1458IDT be used in single-supply configurations?
Yes, but with limitations. While optimized for dual-supply operation, MC1458IDT can operate from a single +12 V to +22 V supply with ground referenced at V−. Input common-mode range extends to within 1.5 V of V−, so input signals must stay above ~1.5 V to avoid clipping or increased distortion.
MC1458IDT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MC1458IDT FAQ
1.How can I place an order for MC1458IDT through Aetrix?
Please submit a Request for Quotation (RFQ) for MC1458IDT 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 MC1458IDT reliable?
The price and inventory of MC1458IDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC1458IDT is usually 5 days.
3.What payment methods are accepted for MC1458IDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC1458IDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC1458IDT?
MC1458IDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC1458IDT 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 MC1458IDT?
For technical support, including MC1458IDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC1458IDT requirements.
6.How does Aetrix verify that MC1458IDT is sourced from the original manufacturer or authorized distributors?
All MC1458IDT 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 MC1458IDT meets industry standards.
7.What is the process for return or replacement of MC1458IDT?
All MC1458IDT units undergo pre-shipment inspection (PSI). If there is an issue with MC1458IDT, 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 MC1458IDT part is unused and in its original packaging.
Return procedure for MC1458IDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MC1458IDT Tags
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