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Texas Instruments LM358MX
- Part No.:
- LM358MX
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM358MX.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,192
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Product details
Overview
LM358MX from Texas Instruments is a dual, low-power, internally frequency-compensated operational amplifier designed for single-supply operation from 3 V to 32 V (or ±1.5 V to ±16 V), featuring 1 MHz unity-gain bandwidth, 100 dB large-signal voltage gain, 2 mV input offset voltage, and rail-to-ground output swing capability - widely deployed in sensor signal conditioning and 4–20 mA transmitter circuits.
For engineers reviewing the LM358MX datasheet, LM358MX pinout, LM358MX application, or LM358MX equivalent, this page delivers verified electrical parameters, SOIC-8 package mapping, real-world use-value context for ground-sensing analog front-ends, and validated alternative options for cost- or temperature-range-sensitive designs.
Technical Context
The LM358MX implements two independent PNP-input op-amps with class-A/B output stages enabling both sourcing and sinking up to 40 mA per channel while maintaining stable operation across supply voltages from 3 V to 32 V. Its input common-mode range includes ground, and output can swing to within 20 mV of ground at V+ = 5 V with 10 kΩ load - critical for single-supply DC-coupled transducer interfaces.
Internally compensated for unity-gain stability, it achieves temperature-compensated unity-gain crossover at 1 MHz and exhibits bias current compensation over temperature, delivering consistent 45–250 nA input bias current (typical 45 nA at 25°C) without external trimming. The device operates reliably from 0°C to +70°C and supports direct interface with TTL/CMOS logic due to its rail-compatible output swing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 32 V single supply (±1.5 V to ±16 V dual); enables direct integration into 3.3 V and 5 V digital systems without auxiliary rails. |
| Unity-Gain Bandwidth | 1 MHz (temperature compensated); supports stable closed-loop gain ≥1 with predictable phase margin in active filters and amplifiers. |
| Large-Signal Voltage Gain | 25 V/mV (min) at V+ = 15 V; provides ≥25,000× open-loop gain for precision DC amplification with <0.04% gain error at G = 100. |
| Input Offset Voltage | 2 mV (typ), 7 mV (max) at 25°C; ensures ≤7 mV baseline error in zero-referenced sensor buffers without trimming. |
| Output Voltage Swing | VOL = 5–20 mV (typ) at V+ = 5 V, RL = 10 kΩ; allows true ground-referenced output in single-supply configurations. |
| Supply Current per Amplifier | 0.5 mA (typ) at V+ = 5 V; enables battery-powered operation with <1 mA total quiescent draw for dual-channel use. |
| Input Common-Mode Range | 0 V to V+ − 1.5 V; permits direct connection of grounded sensors (e.g., thermocouples, strain gauges) without level-shifting circuitry. |
Pinout & Package
LM358MX is supplied in an 8-pin SOIC (Small Outline Integrated Circuit) package with 4.90 mm × 3.91 mm body size and standard 1.27 mm pitch. Pin functions are electrically identical across all LM358-N variants and validated per TI's SNOSBT3J datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUTA) | Output, Channel A | Amplified output of first op-amp; capable of sourcing/sinking up to 40 mA and swinging to within 20 mV of ground. |
| 2 (–INA) | Inverting Input, Channel A | Differential input node; accepts signals down to ground; input bias current flows out of pin (PNP input stage). |
| 3 (+INA) | Non-inverting Input, Channel A | Differential input node; supports common-mode voltage from ground to V+ − 1.5 V; high-impedance sensing point. |
| 4 (GND / V–) | Ground / Negative Supply | Reference node for single-supply operation; serves as negative rail in dual-supply mode; must be low-impedance. |
| 5 (+INB) | Non-inverting Input, Channel B | Second amplifier input; identical electrical behavior to Pin 3; enables dual-channel signal processing in one IC. |
| 6 (–INB) | Inverting Input, Channel B | Second amplifier inverting input; shares same PNP input characteristics and bias current direction as Pin 2. |
| 7 (OUTB) | Output, Channel B | Independent output of second op-amp; fully decoupled from OUTA; supports separate feedback networks. |
| 8 (V+) | Positive Supply | Main power rail; accepts 3–32 V; supplies both amplifiers; quiescent current independent of voltage magnitude. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation with rail-to-ground output | Enables direct interfacing of grounded sensors (e.g., RTDs, bridge transducers) without level-shifting components or dual rails. |
| Temperature-compensated unity-gain crossover | Maintains stable 1 MHz bandwidth across 0°C to +70°C operating range - critical for consistent filter cutoffs and amplifier response. |
| Input bias current compensation | Reduces drift-induced offset errors in high-impedance source applications (e.g., pH electrodes, photodiode amps) over temperature. |
| Low 500 μA supply current per amplifier | Supports always-on industrial monitoring nodes and portable instrumentation with sub-1 mA total quiescent draw. |
| Internally frequency compensated | Eliminates need for external compensation capacitors in unity-gain follower or G ≥ 1 configurations - reduces BOM count and layout area. |
Applications
| Transducer Signal Conditioning | 4–20 mA Current Loop Transmitter |
|---|---|
|
Use Scenario: Amplifying low-level mV outputs from load cells, thermocouples, or pressure bridges referenced to system ground. IC Role / Device Role / Timing Role: Dual-channel DC-coupled instrumentation amplifier front-end; Channel A buffers sensor, Channel B forms difference or reference stage. Use Value: Input common-mode range including ground and rail-to-ground output eliminate level-shifting resistors and reduce offset drift in unipolar sensor interfaces. |
Use Scenario: Converting DAC voltage output to standardized 4–20 mA loop current for industrial process control transmission. IC Role / Device Role / Timing Role: Voltage-to-current converter core; one op-amp configures as precision current source, the other as feedback/compliance monitor. Use Value: Guaranteed 40 mA short-circuit output drive and wide 3–32 V supply range support robust loop compliance up to 24 V with minimal external components. |
| Active Low-Pass Filtering | DC Power Supply Monitoring |
|
Use Scenario: Implementing 2nd-order Sallen-Key or multiple-feedback low-pass filters for anti-aliasing or noise suppression in data acquisition. IC Role / Device Role / Timing Role: Dual op-amp building block for cascaded filter stages; each amplifier handles one pole with internal unity-gain compensation. Use Value: 1 MHz unity-gain bandwidth enables accurate filter corner frequencies up to ~100 kHz with predictable roll-off and phase response. |
Use Scenario: Monitoring microcontroller supply rails (e.g., 3.3 V, 5 V) for brown-out detection or battery voltage trending in embedded systems. IC Role / Device Role / Timing Role: Precision comparator substitute or buffered voltage divider amplifier feeding ADC input. Use Value: 2 mV input offset and rail-to-ground output allow accurate measurement of voltages near 0 V without external reference or biasing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM358DR | Same electrical specs and SOIC-8 package; identical pinout and thermal performance; RoHS-compliant variant with enhanced moisture sensitivity level (MSL 1). | Identical functional use; preferred for new designs requiring full RoHS compliance and extended factory reflow compatibility. | Select LM358DR when MSL-1 handling and lead-free assembly are required; no PCB or schematic changes needed. |
| LM2904DT | Wider operating temperature range (−40°C to +85°C) and lower input bias current (45 nA typ vs. 45–250 nA for LM358MX); otherwise pin- and function-compatible. | Better suited for automotive under-hood or outdoor industrial environments where extended temperature stability is mandatory. | Choose LM2904DT for designs requiring guaranteed operation below 0°C or above 70°C; drop-in replacement with improved bias performance. |
Compared with LM358DR, the LM358MX offers identical functionality but lacks MSL-1 rating for high-volume reflow; versus LM2904DT, it trades extended temperature range for lower cost in commercial-grade applications - making LM358MX optimal for cost-sensitive, 0°C–70°C consumer and industrial control systems.
Availability
LM358MX is available at Aetrix Electronics and suitable for transducer signal conditioning, 4–20 mA current loop transmitters, active filtering, DC power monitoring, and general-purpose analog amplification requiring stable component supply across production volumes.
Supply support for LM358MX 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
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with over 90 years of innovation in precision analog ICs and broad industrial portfolio coverage.
The LM358MX belongs to TI's legacy LMx58-N dual op-amp product line, engineered specifically for reliable, low-cost, single-supply analog signal processing in commercial-grade industrial, consumer, and sensor interface applications.
FAQ
What is the maximum supply voltage for LM358MX?
The LM358MX supports a maximum supply voltage of 32 V in single-supply mode (or ±16 V in dual-supply mode), as specified in the Absolute Maximum Ratings table of TI's SNOSBT3J datasheet. Exceeding 32 V risks permanent damage, and operation above 30 V requires derating based on thermal resistance (189°C/W for SOIC) to maintain junction temperature below 125°C.
Does LM358MX support rail-to-rail input and output?
The LM358MX supports rail-to-ground input (common-mode range includes 0 V) and rail-to-ground output (VOL ≤ 20 mV at V+ = 5 V), but not rail-to-rail output - its high-side output swing is typically V+ − 1.5 V. It does not support input voltages beyond V+ or below −0.3 V, and output cannot reach V+.
What is the input offset voltage specification for LM358MX?
The LM358MX has a typical input offset voltage of 2 mV and a maximum of 7 mV at 25°C, per TI's SNOSBT3J datasheet Section 6.6. This parameter increases slightly over temperature, with a typical drift of 7 µV/°C - critical for precision DC amplification where offset contributes directly to measurement error.
Can LM358MX drive capacitive loads?
The LM358MX can safely drive up to 50 pF in a unity-gain non-inverting configuration without instability, as confirmed by TI's Typical Characteristics (Figure 6-5). Larger capacitive loads require series isolation resistance or reduced closed-loop gain to maintain phase margin and prevent oscillation.
Is LM358MX pin-compatible with LM2904?
Yes, LM358MX is pin-compatible with LM2904 in SOIC-8 packaging: both share identical pinout (OUTA, –INA, +INA, GND, +INB, –INB, OUTB, V+), same footprint, and functionally equivalent dual op-amp architecture. However, LM2904 guarantees operation from −40°C to +85°C and exhibits lower input bias current variation across temperature.
LM358MX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- -
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- -
- Current - Input Bias:
- 45 nA
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 1mA
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 32 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LM358MX FAQ
1.How can I place an order for LM358MX through Aetrix?
Please submit a Request for Quotation (RFQ) for LM358MX 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 LM358MX reliable?
The price and inventory of LM358MX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM358MX is usually 5 days.
3.What payment methods are accepted for LM358MX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM358MX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM358MX?
LM358MX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM358MX 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 LM358MX?
For technical support, including LM358MX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM358MX requirements.
6.How does Aetrix verify that LM358MX is sourced from the original manufacturer or authorized distributors?
All LM358MX 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 LM358MX meets industry standards.
7.What is the process for return or replacement of LM358MX?
All LM358MX units undergo pre-shipment inspection (PSI). If there is an issue with LM358MX, 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 LM358MX part is unused and in its original packaging.
Return procedure for LM358MX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM358MX Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
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LM2904DR
Texas Instruments
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LM358ADR
Texas Instruments
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LM2904DGKR
Texas Instruments
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LM324DR
Texas Instruments
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
Microchip Technology
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LM324PWR
Texas Instruments
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LM2902PWR
Texas Instruments
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LM2902DR
Texas Instruments
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LM358P
Texas Instruments
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