MC1436CD - ±36V Internally Compensated Op Amp | Motorola
MPN: MC1436CD ✗ End of LifeMC1436CD Overview
The MC1436 belongs to the operational-amplifier hierarchy, where an operational amplifier is a differential-input voltage-amplifier IC used to amplify, buffer, sum, or integrate signals. An internally compensated operational amplifier integrates the frequency-compensation network, reducing the number of external components required for stable negative-feedback operation. The MC1436CD consequently sits between generic amplifier functions and precision signal-conditioning applications, while its ±36 V rating distinguishes it from common ±5 V, ±12 V, and ±15 V amplifier families.
The verified product information identifies the MC1436 as a high-voltage, internally compensated operational amplifier intended for operation with external feedback components. This architecture supports conventional inverting and non-inverting amplifier configurations, active summing networks, and closed-loop integrators. Because the exact gain-bandwidth, slew-rate, input-offset, bias-current, input-common-mode-range, and output-swing limits are not included in the supplied source snippets, designers must consult the complete four-page MC1436CD datasheet before fixing loop gain, compensation, noise, accuracy, and stability margins.
Typical industrial uses include process-control loops, high-voltage sensor interfaces, laboratory instrumentation, analog summing and averaging circuits, and active integrators. Its 8-pin SOIC format also supports compact surface-mount assemblies, although exposed-pad thermal analysis is not applicable because the specified package has no stated exposed thermal pad. Designers should still provide adequate copper and consider nearby heat sources because dissipation rises as supply voltage and output current increase.
A key design consideration is to verify the complete DC and AC parameter set before replacing the amplifier with a lower-voltage modern part. The ±36 V supply capability is the principal differentiator, but stability, common-mode range, output swing, slew rate, and offset behavior determine whether a substitute is truly interchangeable. The available MC1436CD documentation is a four-page datasheet; no revision number or additional document number is established by the supplied data.
This page consolidates verified distributor identification, package information, high-voltage operation, application positioning, cross-reference findings, and practical selection guidance. It also distinguishes documented facts from parameters that still require confirmation from the complete manufacturer datasheet, supporting faster sourcing without obscuring design-critical uncertainties.
Drop-in alternatives for MC1436CD — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
MC1436BD
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MC1436MD
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MC1436UD
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
LM709CS
✅ Drop-In📋 Reference alternative (not in catalog)
MC1436CD Maximum Ratings & Electrical Characteristics
| Product Type | Operational amplifier |
| Amplifier Type | General-purpose amplifier |
| Number of Circuits | 1 circuit |
| Supply Voltage Range | ±36 V |
| Compensation | Internally compensated |
| Package | 8-SOIC |
| Mounting Type | Surface mount |
| Operating Ambient Temperature Range | 0 °C to +70 °C |
| Primary Application | Summing amplifier |
| Additional Application | Integrator |
| Feedback Configuration | External feedback components |
| Number of Pins | 8 pins |
| Operating Temperature Range | 0 °C to +70 °C |
| Datasheet Length | 4 pages |
MC1436CD 8-soic Pin Configuration Guide
Pin configuration for MC1436CD (8-soic package). This analog component features input, output, and power supply pins. Refer to the manufacturer datasheet for offset null, compensation, and enable pin configurations. Ideal for signal conditioning and amplifier circuits.
No detailed pinout data available for MC1436CD.
Refer to the datasheet for full pin configuration.
Typical Applications
MC1436CD is suitable for 6 applications: High-Voltage Sensor Signal Conditioning, Active Precision Integrator, Active Summing Amplifier, Industrial Process-Control Loop, Laboratory Instrumentation Front End, High-Voltage Feedback Control.
High-Voltage Sensor Signal Conditioning
The MC1436CD fits instrumentation interfaces that must tolerate a ±36 V supply while amplifying, scaling, or buffering sensor-derived signals. Its single-amplifier, internally compensated architecture supports conventional negative-feedback operation without requiring the designer to add a separate compensation network. The verified documentation identifies the amplifier as suitable for summing and integrating configurations, making it useful when a sensor signal must be combined with a reference or integrated before conversion. The critical design check is input common-mode range: although the supply reaches ±36 V, the actual signal may still need to remain inside the amplifier’s input range. Verify offset, bias current, slew rate, and output swing against the sensor and excitation source before finalizing the gain and feedback network.
Recommended
Active Precision Integrator
The MC1436CD is a logical candidate for an active integrator because the verified Motorola family description explicitly identifies integration and external feedback components as supported uses. An integrator combines the capacitor in the feedback path with a resistor at the input, and the MC1436CD’s internally compensated topology can simplify implementation of that loop. Its ±36 V supply capability allows operation around high-bipolar industrial or laboratory signal levels, subject to the common-mode and output-swing limits. The main engineering risk is dynamic behavior: the complete datasheet’s slew rate, gain-bandwidth product, saturation recovery, and stability information must be checked against the integration frequency and expected signal slew rate before the component is released for production.
Recommended
Active Summing Amplifier
The MC1436CD is explicitly positioned for summing-amplifier use by the verified manufacturer-family description, allowing several inputs to be combined into a single output through weighted resistor networks and negative feedback. Internally compensated operation simplifies the closed-loop design, while the 8-SOIC package supports compact surface-mount assembly. The ±36 V supply range is useful when summing signals use a larger bipolar signal scale than conventional low-voltage amplifiers can accommodate. For a practical implementation, calculate each input-resistor weighting and verify that the summed output does not exceed the amplifier’s output swing at the worst-case input polarity. Resistor tolerance, input bias current, offset voltage, stability, and load capacitance must also be included because they directly affect the accuracy of the weighted sum.
Recommended
Industrial Process-Control Loop
The MC1436CD can serve as the active error amplifier in a process-control loop when the control signal requires a high-voltage bipolar operating range. A typical implementation compares a feedback value with a reference, drives an actuator interface, and relies on the amplifier’s external feedback network to set loop gain and polarity. The verified 0 °C to +70 °C ambient specification supports commercial indoor equipment but may not cover wider industrial environments. Designers should also account for actuator loading, loop stability, output saturation, and the amplifier’s slew rate. If the controlled process demands lower offset, lower noise, faster settling, or operation outside 0 °C to +70 °C, a modern precision alternative with verified ratings may be preferable despite its lower supply-voltage limit.
Recommended
Laboratory Instrumentation Front End
The MC1436CD is appropriate for laboratory instrumentation that accepts bipolar signals exceeding the common ±15 V operating envelope of many precision amplifiers. Its single-amplifier configuration can be used as a preamp, level-shifting stage, active filter section, or waveform-conditioning element when the surrounding circuit remains within the verified input and output limits. The internally compensated architecture is valuable because it reduces external compensation complexity, while the 8-SOIC package is convenient for compact analog boards. Performance verification is essential: the available excerpts do not provide noise density, offset drift, bias current, bandwidth, or common-mode limits. Those parameters determine whether the device is acceptable for precision measurements or only for general-purpose amplification, and they must be obtained from the complete four-page datasheet.
Recommended
High-Voltage Feedback Control
The MC1436CD can implement feedback-control and voltage-amplification functions around high-voltage bipolar actuators or test fixtures because its verified supply rating extends to ±36 V. In a closed-loop amplifier, feedback defines gain and bandwidth, and the internally compensated MC1436 family architecture reduces the component count associated with frequency compensation. The design must still ensure that command signals remain inside the input common-mode range and that the driven load does not force the output beyond its swing. Pay particular attention to stability with capacitive and inductive loads, because the supplied excerpts do not provide complete gain-bandwidth, slew-rate, or load-capacitance data. Verify these limits and thermal dissipation in the manufacturer datasheet before choosing external power transistors or protective networks.
Recommended
Recommended Products Summary
Engineering reference data for MC1436CD — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC1436BD | MC1436MD | MC1436UD | LM709CS |
|---|---|---|---|---|---|
| Brand | Motorola | Motorola | Motorola | Motorola | Texas Instruments |
| Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Product Type | Single general-purpose operational amplifier | Single operational amplifier | Single operational amplifier | Single operational amplifier | Single operational amplifier |
| Number of Circuits | 1 circuit | 1 circuit | 1 circuit | 1 circuit | 1 circuit |
| Documented Family Uses | Summing amplifier, integrator, external-feedback operation | MC1436 family | MC1436 family | MC1436 family | General-purpose operational amplifier |
Key Differentiators
- Verified high-voltage operating capability (vs LM709CS)
- Family continuity within 8-SOIC (vs MC1436BD)
- Explicitly documented internal compensation (vs LM709CS)
Design Notes
Do not treat the ±36 V supply rating as permission to apply the corresponding voltage at every pin. Before connection, confirm the absolute maximum supply voltage, input common-mode range, output swing, and input current limits in the complete four-page datasheet. In particular, summing and integrating networks can present unexpected DC levels at the amplifier inputs; verify those levels at startup, shutdown, and fault conditions rather than relying only on the nominal signal amplitude.
Estimated: amplifier dissipation is approximately P = (VS/2) × IO for a symmetric bipolar output operating at the quiescent level, so actual dissipation also depends on output current and waveform. The supplied excerpts do not provide quiescent current or output-current limits. Therefore no defensible thermal estimate can be completed until those values are obtained from the datasheet; then calculate worst-case dissipation, add nearby heat sources, and verify the 8-SOIC land pattern and copper area against the specified thermal data.
Place the feedback resistors and integrator or summing capacitors close to the amplifier pins, and keep the input and feedback loop compact to minimize parasitic coupling and instability. Provide a low-impedance ground reference and route high-current output and supply paths away from sensitive input nodes. Because the supplied excerpts do not identify the exact pin map, complete the PCB layout from the controlled manufacturer datasheet rather than using a generic SOIC-8 drawing.
Compliance Information
The supplied verified excerpts do not contain compliance declarations. AEC-Q100 is marked not_applicable because the MC1436CD is identified as a general-purpose amplifier without an automotive qualification claim in the supplied data.
