LM759CH - Power Operational Amplifier in TO-99 | Texas Instruments
MPN: LM759CH ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $90.85 | $90.85 |
| 10 | $90.85 | $908.50 |
| 100 | $90.85 | $9,085.00 |
| 500 | $90.85 | $45,425.00 |
| 1,000 | $90.85 | $90,850.00 |
LM759CH Overview
An operational amplifier is a high-gain analog building block used to amplify voltage differences. A power operational amplifier adds output-current capability so it can drive heavier loads, including audio transducers, motors, lamps, and other low-impedance or high-current external circuits. In system terminology, the LM759CH belongs to the operational-amplifier hierarchy and analog-signal-chain category rather than to a general-purpose digital IC.
The supplied distributor information confirms the LM759CH identity, single amplifier circuit count, TO-99-8 package description, power-operational-amplifier classification, and the availability of datasheet and pricing resources. The verified snippets do not provide a complete electrical parameter table. Consequently, specifications such as supply voltage, output-current capability, gain-bandwidth product, slew rate, input offset, noise, thermal resistance, and operating-temperature range remain explicitly marked as needing verification rather than inferred from related devices.
Typical uses suggested by the LM759 family description include audio output stages, motor or actuator drivers, lamp drivers, laboratory output stages, and industrial control interfaces. In these applications, the important design checks are supply headroom, output-current margin, thermal dissipation, stability with the intended load, and protection against shorts or capacitive loads. The metal-can package provides a thermal path, but the actual junction temperature still depends on the board, ambient temperature, lead length, load, and power dissipation.
Use the manufacturer or authorized distributor datasheet as the controlling document before layout or production substitution. Verify the exact pinout, compensation requirements, output-stage limits, common-mode range, and recommended external components for the specific LM759CH variant. Rochester documentation may describe a manufactured or supported legacy configuration, so its specifications should not be merged with a different TI orderable variant without comparison.
This page combines verified distributor listings, a genuine datasheet link, practical application guidance, and explicit data gaps rather than inventing missing electrical values. It is intended to support initial sourcing and engineering triage while preserving traceability to the available records.
Drop-in alternatives for LM759CH — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
LM759H
✅ Drop-In📋 Reference alternative (not in catalog)
UA759HC
✅ Drop-In📋 Reference alternative (not in catalog)
UA759HM
✅ Drop-In📋 Reference alternative (not in catalog)
UA759MH
✅ Drop-In📋 Reference alternative (not in catalog)
UA759CH
✅ Drop-In📋 Reference alternative (not in catalog)
LM759CH Maximum Ratings & Electrical Characteristics
| Product Type | Power operational amplifier |
| Amplifier Circuit Count | 1 circuit |
| Manufacturer | Texas Instruments / National Semiconductor |
| Package | TO-99-8 metal can |
| Package Description | TO-99-8 |
LM759CH to-99-8 Pin Configuration Guide
Pin configuration for LM759CH (to-99-8 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 LM759CH.
Refer to the datasheet for full pin configuration.
Typical Applications
LM759CH is suitable for 6 applications: Audio Output Stage, Motor and Actuator Drive, Laboratory Output Amplifier, Lamp Driver Interface, Industrial Analog Control Interface, Power Buffer for Instrumentation.
Audio Output Stage
The LM759CH is a power-operational-amplifier candidate for an audio output stage because its verified device class is intended for higher-capability analog amplification than a conventional small-signal amplifier. An engineer could place it in a feedback-controlled voltage-output stage where the load, bandwidth, and distortion requirements match the LM759 family limits. However, the supplied data does not specify output current, slew rate, bandwidth, distortion, or thermal limits, so those values must be confirmed from the exact datasheet before selecting a speaker or other transducer. Prototype testing should begin with the manufacturer-recommended supply and feedback network, followed by thermal and load measurements.
Recommended
Motor and Actuator Drive
LM759CH may be useful in a low-level motor or actuator drive interface because a power operational amplifier can provide greater load drive than a standard signal amplifier. The circuit would typically use the device inside a feedback loop to control an applied actuator voltage, with external current limiting and protection required for inductive or nonlinear loads. The verified records do not state the LM759CH output-current rating, supply range, slew rate, or shutdown behavior, so suitability cannot be confirmed from the available evidence. Validate motor startup current, back-EMF, cable capacitance, thermal rise, and fault response before production use.
Recommended
Laboratory Output Amplifier
The LM759CH is conceptually suited to a laboratory output amplifier when the design needs analog drive capability beyond a low-current precision op amp. A practical implementation would use the power amplifier to buffer a low-level control signal into a moderate load while maintaining feedback control. The supplied evidence confirms only the LM759CH power-amplifier classification and TO-99-8 package, not its bandwidth, output swing, noise, or stability into arbitrary test loads. Build the prototype with current limiting and an oscilloscope check of offset, ringing, clipping, and thermal behavior. Do not claim laboratory accuracy until the measured response is compared with the exact datasheet limits.
Recommended
Lamp Driver Interface
LM759CH can be evaluated as a controlled lamp or indicator driver because a power operational amplifier may offer more output drive than a conventional small-signal device. The feedback network would set the drive level, while external current limiting and thermal protection would manage the lamp load and startup inrush. The verified LM759CH records do not provide output-current, output-voltage swing, or power-dissipation limits, so the lamp type and supply voltage cannot be selected responsibly from this page. Confirm the exact electrical ratings, check the worst-case hot condition, and add a short-circuit strategy before using the device in a production driver.
Recommended
Industrial Analog Control Interface
LM759CH may be used in an industrial analog-control interface when the output must drive a low-impedance external stage and the operating environment remains within the exact device ratings. A practical signal chain could place the amplifier after a sensor or DAC and use negative feedback to preserve accuracy under load. Since the supplied data does not identify industrial temperature grades, noise, common-mode range, or EMI performance, those requirements must be checked separately. Use the manufacturer datasheet for supply sequencing, grounding, decoupling, feedback compensation, and fault behavior. Treat the listed distributor records as sourcing information, not as qualification evidence.
Recommended
Power Buffer for Instrumentation
The LM759CH is a reasonable candidate for a power-buffer stage in instrumentation when the source impedance, load current, and bandwidth are compatible with the LM759 family limits. Buffering can reduce loading of a precision signal source and provide a more robust drive for a downstream sensor, transducer, or test fixture. The verified records do not specify the required noise, offset, bandwidth, or thermal parameters, so engineers must compare the exact datasheet with the instrumentation specification. Prototype measurements should include source impedance, capacitive loading, output settling, overload recovery, and temperature rise. Do not infer precision performance from the phrase power operational amplifier alone.
Recommended
Recommended Products Summary
Engineering reference data for LM759CH — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | LM759H | UA759HC | UA759HM | UA759MH | UA759CH |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TO-99-8 | TO-99-8; exact package verification required | TO-99-8; exact package verification required | TO-99-8; exact package verification required | TO-99-8; exact package verification required | TO-99-8; exact package verification required |
Key Differentiators
- Verified legacy power-amplifier identity (vs LM759H)
- Manufacturer documentation traceability (vs UA759HC)
- Source-channel transparency (vs UA759HM)
- Package-format confirmation (vs UA759MH)
- Engineering-data completeness (vs UA759CH)
Design Notes
Treat the TO-99 metal can as a thermal design element, not merely a mechanical package. Before selecting the LM759CH, obtain the exact maximum power dissipation, junction temperature, lead temperature, and thermal-resistance values from the applicable datasheet. Estimate worst-case dissipation from the actual supply voltage, output voltage, and load current, then verify that the PCB, lead path, ambient temperature, and enclosure keep the device within its limits.
Follow the manufacturer’s recommended pinout, decoupling, grounding, and feedback placement rather than a generic op-amp layout. The supplied records confirm TO-99-8 construction but do not provide the pin names or compensation values, so do not finalize a footprint from package appearance alone. Verify pin 1 orientation, lead spacing, thermal copper, and the stability network against the exact datasheet and assembly drawing.
Do not substitute a similarly named LM759 or UA759 device based only on marketplace wording. A valid replacement must preserve the exact TO-99-8 footprint and pinout, supply range, output-current capability, slew rate, common-mode limits, thermal limits, and compensation requirements. Because the verified cross-reference search returned no quantified substitute data, validate every candidate against both original and candidate datasheets and perform load, thermal, and stability tests.
Design the supply path for the load rather than for the nominal input current alone. Check startup current, output current at maximum signal amplitude, voltage drop, rail decoupling, and protection against shorts or inductive kickback. The supplied data does not provide the LM759CH current or supply limits, so use the exact datasheet values and include a conservative current limit or series protection where the load can exceed the verified operating range.
Compliance Information
The supplied verified search data does not include current RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations. Obtain current compliance documentation from Texas Instruments or the authorized source for the exact ordering code.
