LM359MX - Dual 60V/us High-Speed Amplifier | Texas Instruments
MPN: LM359MX ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.5039 | $1.50 |
| 10 | $1.5039 | $15.04 |
| 100 | $1.5039 | $150.39 |
| 500 | $1.5039 | $751.95 |
| 1,000 | $1.5039 | $1,503.90 |
LM359MX Overview
A current-mode amplifier, commonly called a Norton amplifier, senses input current rather than directly measuring input voltage. LM359MX uses that architecture to achieve high bandwidth and fast slew performance while allowing gain and compensation to be programmed with external components. Each amplifier can therefore adapt its dynamic behavior to a particular signal bandwidth, gain, or output-drive requirement rather than operating only with fixed internal settings.
The two independent channels support simultaneous analog processing or separate signal paths. Programmable operating characteristics are useful when one circuit must amplify small instrumentation signals and another must process faster pulses. The 60 V/us slew rate helps preserve large-signal waveform fidelity, while the dual configuration can reduce component count where two compatible amplifier functions are needed.
Typical uses include pulse and transient amplifiers, analog summing stages, video or communications interface signal conditioning, laboratory interfaces, and wideband control loops. Because operating characteristics are programmable, the external network around each channel is as important as the nominal device specifications. Feedback components, compensation values, source impedance, and output loading must be selected together to maintain intended bandwidth and stability.
For PCB layout, use a grounded return path near each amplifier, keep sensitive input and feedback traces short, and place compensation components close to their associated pins. The tape-and-reel ordering suffix MX identifies the verified LM359MX package configuration, while the functional LM359 family documentation describes the shared dual current-differencing architecture and programmable operating behavior.
This page combines the verified manufacturer and distributor listing data with engineering guidance for the LM359MX. It also makes missing electrical limits and availability values explicit rather than inferring them, allowing designers to evaluate the device against the full LM359 datasheet and current authorized-distributor inventory before releasing a design.
Drop-in alternatives for LM359MX — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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Request AlternativesLM359MX Maximum Ratings & Electrical Characteristics
| Amplifier Type | General-purpose current-mode Norton amplifier |
| Number of Circuits | 2 circuits |
| Architecture | Dual current-differencing input amplifier |
| Programmability | User-programmable amplifier operating characteristics |
| Slew Rate | 60 V/us |
| Package | 14-SOIC, 0.154 inch width, 3.90 mm width |
| Packaging | Tape and reel (TR) |
| Mounting Type | Surface mount |
| Stable Closed-Loop Gain | Inverting gain of 10 or greater |
| Output Saturation Control | Programmable per verified manufacturer description |
| Input Offset Balance | Programmable per verified manufacturer description |
| Frequency Compensation | Programmable per verified manufacturer description |
LM359MX 14-soic, 0.154 inch width, 3.90 mm width Pin Configuration Guide
Pin configuration for LM359MX (14-soic, 0.154 inch width, 3.90 mm width 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 LM359MX.
Refer to the datasheet for full pin configuration.
Typical Applications
LM359MX is suitable for 6 applications: High-Speed Pulse Conditioning, Programmable Analog Gain, Transient Signal Capture, Analog Summing and Mixing, Industrial Control Signal Interface, Laboratory Signal Interface.
High-Speed Pulse Conditioning
LM359MX fits pulse-shaping and edge-conditioning circuits because each channel is a programmable Norton amplifier with a verified 60 V/us slew rate. The dual package allows related signal paths to share one board footprint when their supply and grounding requirements are compatible. Designers can use external feedback and compensation to establish channel bandwidth, but the supported inverting gain condition is 10 or greater. Validate pulse amplitude, loading, and source impedance because the available excerpts do not provide output-current or supply-voltage limits.
Recommended
Programmable Analog Gain
The programmable characteristics of LM359MX make it applicable to gain networks whose bandwidth and signal scaling must be adjusted with external components. Each current-mode amplifier can be configured as part of an inverting stage, while the manufacturer states that stable operation is intended for gains of 10 or greater. This makes the device useful in laboratory and industrial signal-conditioning equipment, although the exact resistor, capacitor, and compensation values must be derived from the complete LM359 datasheet.
Recommended
Transient Signal Capture
LM359MX can condition short-duration analog events when fast output movement and programmable bandwidth are more important than using a conventional voltage-feedback amplifier. Its verified 60 V/us slew rate provides a concrete starting point for edge-rate analysis, while the dual architecture permits two related channels for differential or sequential measurements. Probe loading and amplifier-input capacitance can materially affect fast transient response, so layout and source-impedance checks are essential before interpreting captured waveforms.
Recommended
Analog Summing and Mixing
Two LM359MX channels can implement compatible summing or mixing functions in instrumentation where programmable current-mode behavior is useful. The current-differencing input stage allows external networks to define channel scaling and bandwidth, while the package integrates two independent amplifiers in one 14-SOIC footprint. The implementation must include a suitable return path and account for each channel's interaction through shared supply impedance. Exact input-current and common-mode limits remain unavailable in the supplied excerpts.
Recommended
Industrial Control Signal Interface
LM359MX is applicable to industrial control paths that transform analog command or feedback signals into a usable interface voltage. Its dual channels can handle two compatible signals, and the verified 60 V/us slew rate is useful when system nodes require faster transitions than ordinary low-speed comparators may provide. Industrial suitability still requires checking supply range, temperature limits, noise, and isolation requirements in the manufacturer documentation; none of those missing limits are assumed in this listing.
Recommended
Laboratory Signal Interface
LM359MX can serve as the analog output stage in laboratory instruments that need programmable gain or frequency behavior and a verified 60 V/us slew rate. Two independent channels help implement related outputs without requiring two separate packages. For instrument-grade results, evaluate output-accuracy drift, noise, offset current, and load capability from the full datasheet. Keep external compensation close to the device and use a low-impedance return arrangement to reduce sensitivity to board parasitics.
Recommended
Recommended Products Summary
Engineering reference data for LM359MX — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product |
|---|---|
| Package | 14-SOIC, 3.90 mm width |
| Brand | Texas Instruments |
| Number of Circuits | 2 |
| Amplifier Architecture | Current-differencing Norton amplifier |
| Slew Rate | 60 V/us |
| Programmable Operating Characteristics | Yes |
| Stable Inverting Gain | 10 or greater |
| Packaging | Tape and reel |
| Verified Unit Price | $1.5039 reference price as of 2026-10-23 |
| Mounting Type | Surface mount |
Key Differentiators
- Programmable current-mode signal processing (vs LM358N)
- Dual-channel integration in 14-SOIC (vs OPA1612)
- High-speed programmable operating class (vs NE5532D)
Design Notes
Keep each LM359MX input, feedback, and compensation path short and place programmable components close to the associated channel pins. Route the amplifier return directly to the circuit ground plane rather than through the trace carrying another high-current signal. The verified design targets stable inverting operation at gains of 10 or greater, but the exact network must follow the official datasheet and be checked for parasitic feedback.
Use the verified 60 V/us slew rate as a large-signal design input, not as a guaranteed usable bandwidth. Probe capacitance, source impedance, feedback impedance, and load determine how much bandwidth remains at the output. Breadboard or long-lead prototypes can add enough parasitic capacitance to alter high-speed behavior, so use a short PCB implementation and compare measured edge rates against the intended signal path.
Do not substitute a generic dual op-amp for LM359MX based only on circuit count or package width. LM359MX uses a programmable current-mode architecture, and the supplied sources do not confirm that another device has matching input, compensation, output, or supply connections. Obtain the complete pinout and electrical limits from the manufacturer before using a cross-reference candidate, then verify stability and gain across component tolerances.
Compliance Information
The supplied verified snippets do not provide explicit LM359MX RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. These fields remain unknown rather than assumed.
