LM258YPT - Dual Low-Power Op Amp | STMicroelectronics
MPN: LM258YPT ✓ ActiveLM258YPT Overview
An operational amplifier is a high-gain analog building block that compares two input voltages and drives its output toward the difference between them. The LM258 belongs to the dual operational-amplifier family within the broader linear IC and amplifier hierarchy. Internally frequency compensation simplifies closed-loop use because designers do not need to add an external dominant-pole capacitor for ordinary stable operation.
The LM258YPT provides two amplifiers in one compact surface-mount package. Its 100 dB gain and 1.1 MHz bandwidth make it appropriate for audio-frequency signal paths, transducer conditioning, feedback networks, and low-frequency control applications. Low input bias current helps preserve measurement accuracy when the source impedance is relatively high, while the dual configuration saves board area compared with two separate single amplifiers.
Each channel is independent, allowing one section to perform amplification while the other handles a different signal or a supervisory function. Because the amplifiers can operate from a single supply, the output range remains constrained by the supply rails. Designers must account for this limitation in rail-to-rail sensing applications or add suitable biasing when signals extend below the lower supply voltage.
Typical uses include audio preamplification, temperature-sensor interfaces, light-control loops, low-level instrumentation, and general feedback-control systems. The 8-pin TSSOP package is useful for compact industrial, instrumentation, and embedded-control designs where two amplifiers are required but a through-hole dual operational amplifier would be unnecessarily large.
Layout should keep feedback components close to the relevant input and output pins, maintain a continuous ground reference, and place decoupling capacitance near the supply pins. Input and output nodes should remain short to reduce parasitic pickup. Designers should also verify common-mode range, output swing, slew rate, supply voltage, stability, and load behavior against the manufacturer datasheet before finalizing the circuit.
This product page combines manufacturer-device identification, distributor availability information, pinout and datasheet references, application guidance, and qualified same-package alternatives. It is structured to help engineers compare the LM258YPT against other 8-pin dual operational amplifiers without treating every functionally similar device as a true drop-in replacement.
Drop-in alternatives for LM258YPT — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
LM258AYPT
✅ Drop-In📋 Reference alternative (not in catalog)
LM2904YPT
✅ Drop-In📋 Reference alternative (not in catalog)
LM2904PT
✅ Drop-InContact for price
View Datasheet →LM358APT
✅ Drop-In📋 Reference alternative (not in catalog)
LM258YPT Maximum Ratings & Electrical Characteristics
| Amplifier Type | Low-power dual operational amplifier |
| Number of Amplifiers | 2 independent amplifiers |
| Number of Circuits | 2 circuits |
| Gain | 100 dB |
| Bandwidth | 1.1 MHz |
| Supply Type | Single supply |
| Compensation | Internal frequency compensation |
| Input Bias Current | Low input bias current |
| Package | 8-pin TSSOP |
| Mounting Type | Surface mount |
| Product Classification | Standard general-purpose amplifier |
LM258YPT 8-pin tssop Pin Configuration Guide
Pin configuration for LM258YPT (8-pin tssop 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 LM258YPT.
Refer to the datasheet for full pin configuration.
Typical Applications
LM258YPT is suitable for 6 applications: Low-Level Sensor Signal Conditioning, Audio Preamplification, Industrial Feedback Control, Temperature and Light Control Loops, General-Purpose Feedback Amplifier, Portable Instrumentation Front End.
Low-Level Sensor Signal Conditioning
The LM258YPT fits sensor interfaces because it combines two independent, high-gain amplifiers with low input bias current in an 8-pin TSSOP package. One channel can amplify a sensor signal while the other provides buffering, level shifting, or feedback amplification. Its documented 100 dB gain and 1.1 MHz bandwidth are appropriate for many low-frequency measurement systems. The design must keep the sensor source impedance and return path in mind, because bias-current error rises with source impedance. The selected sensor and feedback network must also remain inside the amplifier’s input common-mode range and output-swing limits under the chosen single supply.
Recommended
Audio Preamplification
The LM258YPT can provide the first gain stage in a small audio preamplifier or active-filter circuit. The dual configuration allows two signal channels to be amplified without requiring separate packages, while 100 dB open-loop gain supports feedback-defined gain settings. Its 1.1 MHz bandwidth covers many audio-band applications but is not intended for high-frequency switching or wideband video. Feedback resistors should be placed close to their associated amplifier pins, and the output should be checked for clipping as well as the input common-mode range. A single-supply implementation also requires deliberate signal biasing if the source is centered around zero volts.
Recommended
Industrial Feedback Control
The LM258YPT is useful in industrial feedback loops where two low-power amplifiers can perform error amplification and output buffering. The 100 dB gain helps establish useful loop gain, while the 1.1 MHz bandwidth provides response capability for many temperature, position, and level-control loops. Stable implementation depends on the selected noise-gain network and load, so use the manufacturer application guidance when defining compensation. Keep feedback routing compact and place input filtering close to the source to prevent switching nodes and motor-drive stages from coupling into the error amplifier.
Recommended
Temperature and Light Control Loops
The two channels in the LM258YPT can be assigned to separate stages of a temperature or light-control system, reducing package count. One amplifier may amplify a thermistor, photodiode, or photoresistor signal, and the other may drive or buffer the error amplifier. The low input bias current is advantageous with high-impedance sensors, and the 100 dB gain allows useful closed-loop amplification. Designers should limit sensor bandwidth according to the 1.1 MHz device bandwidth and verify that the operating point does not leave the input common-mode or output-swing range. Slow temperature loops can generally use simple compensation, but stability must be checked with the actual sensor and load.
Recommended
General-Purpose Feedback Amplifier
The LM258YPT works as a general-purpose feedback amplifier for instrumentation, interface, and embedded-control boards. Two independent channels support inverting, non-inverting, differential, or mixed signal-chain functions, provided each channel is wired consistently with its application. Internally frequency compensation simplifies ordinary closed-loop design, while 100 dB gain and 1.1 MHz bandwidth cover many low-frequency tasks. Component tolerances set practical gain accuracy, and parasitic capacitance around high-value feedback resistors can affect behavior. Place the feedback network and input components close to the device, maintain short output routing, and use a low-impedance ground reference to avoid introducing additional error into the measured signal.
Recommended
Portable Instrumentation Front End
The 8-pin TSSOP package makes the LM258YPT suitable for compact battery-powered instrumentation where PCB area and power consumption are priorities. Two channels can amplify and buffer inputs without using two separate amplifier packages, helping reduce board area. The low-power architecture and single-supply operation fit portable systems that use a common positive rail and ground reference. Because the amplifier is not rail-to-rail, input and output excursions must remain within the usable common-mode and swing regions. Use a low-noise supply, local bypass capacitance, short analog traces, and a quiet ground arrangement to preserve measurement accuracy.
Recommended
Recommended Products Summary
Engineering reference data for LM258YPT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | LM258AYPT | LM2904YPT | LM2904PT | LM358APT |
|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | 8-pin TSSOP | 8-pin TSSOP | 8-pin TSSOP | 8-pin TSSOP | 8-pin TSSOP |
| Amplifier Count | 2 independent amplifiers | 2 independent amplifiers | 2 independent amplifiers | 2 independent amplifiers | 2 independent amplifiers |
| Frequency Compensation | Internal | Internal | Internal | Internal | Internal |
| Supply Configuration | Single supply over a wide voltage range | Single supply over a wide voltage range | Single-supply capable | Single-supply capable | Single-supply capable |
Key Differentiators
- Two amplifiers in one compact surface-mount package (vs LM2904YPT)
- Documented gain and bandwidth for low-frequency analog design (vs LM2904PT)
- Low-bias-current family positioning (vs LM358APT)
Design Notes
Route each feedback loop directly between its amplifier pins and adjacent components. Keep the noninverting input away from supply, ground, and switching-node copper, and place input filtering as close to the source as practical. Continuous ground-plane routing is preferable to fragmented signal returns, while the unused amplifier channel should be configured according to the manufacturer guidance rather than left floating.
Place the supply bypass capacitor close to the device supply and ground pins. Select the capacitor and loop geometry according to the manufacturer recommendations, and keep the high-current return current away from sensitive input-referred ground paths. Because the LM258YPT operates from a single supply, verify that both input signals and the required output swing remain inside the usable signal range for the selected supply voltage.
Do not assume that a similar dual operational amplifier is automatically interchangeable. Before replacing the LM258YPT, compare input bias current, input offset voltage, common-mode range, output swing, supply limits, slew rate, gain-bandwidth behavior, stability, noise, and temperature grade. A package match alone does not prove electrical equivalence, particularly when the original design depends on the specified 100 dB gain or 1.1 MHz bandwidth.
Use short, guarded analog traces and avoid routing sensitive inputs beneath digital, relay, or power-conversion nodes. If feedback resistors are large, reduce their parasitic capacitance and consider a small feedback capacitor according to the stability requirements of the selected noise-gain configuration. Verify the final circuit with the actual source impedance, load capacitance, supply network, and sensor or feedback network.
Compliance Information
No explicit environmental or material-compliance statements were identified for the exact LM258YPT order code. Confirm the current declarations using the STMicroelectronics product page and the applicable package documentation.