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STMicroelectronics LM358WST
- Part No.:
- LM358WST
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LM358WST.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8MINISO
- Quantity:
- Payment:
- Shipping:
Inventory:23,879
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Product details
Overview
LM358WST from STMicroelectronics is a low-power dual operational amplifier in MiniSO8 package, designed for single-supply operation from 3 V to 30 V. It delivers 100 dB DC voltage gain, 1.1 MHz unity-gain bandwidth, 2 mV input offset voltage, and rail-to-rail output swing down to 0 V - enabling precision signal conditioning in cost-sensitive industrial and consumer sensor interfaces.
For engineers reviewing the LM358WST datasheet, LM358WST pinout, LM358WST application, or LM358WST equivalent, key selection criteria include its ground-sensing input common-mode range, temperature-compensated bias current (20 nA typ), low 0.7 mA supply current at 5 V, and compatibility with +5 V logic-system power rails without auxiliary supplies.
Technical Context
The LM358WST integrates two independent high-gain op-amps with internal frequency compensation, enabling stable unity-gain operation across temperature. Its PNP input stage supports input voltages down to ground and differential inputs up to full supply rail, while output stage sinks to 0 V and sources up to (VCC+ − 1.5 V).
It operates over 0 °C to +70 °C ambient, features ESD protection rated at 2 kV (HBM), and maintains consistent 0.7–1.2 mA total supply current across 5 V to 30 V supply range - confirming true supply-voltage independence for battery-powered and wide-input-range systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 30 V - supports direct interface with 5 V logic rails and higher-voltage industrial sensors. |
| Input Offset Voltage | 2 mV max - enables accurate DC amplification in 12-bit ADC front-ends without trimming. |
| Large-Signal Voltage Gain | 100 V/mV min - ensures stable closed-loop gain accuracy in transducer amplifier configurations. |
| Unity-Gain Bandwidth | 1.1 MHz - sufficient for anti-aliasing filters and audio preamplifiers up to ~100 kHz. |
| Input Bias Current | 20 nA typ - minimizes error in high-impedance pH or photodiode sensor circuits. |
| Output Voltage Swing | 0 V to (VCC+ − 1.5 V) - allows full dynamic range utilization in single-supply data acquisition. |
| Supply Current (per amp) | 0.35 mA typ at 5 V - extends battery life in portable instrumentation and IoT node analog front-ends. |
Pinout & Package
LM358WST is housed in MiniSO8 (plastic micropackage), measuring 2.80–3.20 mm × 4.65–5.15 mm × 1.1 mm height, with 0.65 mm lead pitch and ECOPACK® environmental compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output 1 | Amplified output of first op-amp; capable of sourcing 40 mA / sinking 50 mA. |
| 2 | Inverting Input 1 | Differential input node for first amplifier; accepts signals down to ground. |
| 3 | Non-inverting Input 1 | Differential input node for first amplifier; common-mode range includes ground. |
| 4 | VCC− (GND) | Power return reference for both amplifiers; required for single-supply operation. |
| 5 | Non-inverting Input 2 | Differential input node for second amplifier; electrically isolated from Channel 1. |
| 6 | Inverting Input 2 | Differential input node for second amplifier; shares same input stage architecture as Pin 2. |
| 7 | Output 2 | Amplified output of second op-amp; identical drive capability to Pin 1. |
| 8 | VCC+ | Positive supply rail; supports up to +30 V; powers both amplifiers simultaneously. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation | Operates from 3 V to 30 V with input common-mode range extending to ground - eliminates need for split supplies in sensor signal chains. |
| Internal frequency compensation | Guarantees unity-gain stability without external components - reduces BOM count and layout complexity. |
| ESD protection | 2 kV HBM rating - enhances robustness during PCB handling and system integration in non-ESD-controlled environments. |
| Temperature-compensated parameters | Input offset voltage drift ≤15 µV/°C and bias current drift ≤200 pA/°C - improves long-term DC accuracy in unregulated ambient conditions. |
| Rail-to-rail output capability | Swings 0 V to (VCC+ − 1.5 V) - maximizes usable dynamic range when interfacing with 3.3 V or 5 V ADCs. |
Applications
| Temperature Sensor Interface | DC Motor Current Sensing |
|---|---|
Use Scenario: Amplifying low-level output from NTC thermistors or RTDs in HVAC control panels. IC Role / Device Role / Timing Role: Dual-channel DC-coupled transducer amplifier - Channel 1 for signal gain, Channel 2 for reference buffering. Use Value: 2 mV offset and 20 nA bias current minimize measurement error in 10 kΩ bridge configurations at room temperature. | Use Scenario: Isolating and scaling shunt voltage in 12 V brushed DC motor drives. IC Role / Device Role / Timing Role: Non-inverting current-sense amplifier with adjustable gain via external resistors. Use Value: Ground-sensing input enables direct connection to low-side shunt; 1.1 MHz bandwidth supports PWM ripple rejection up to 20 kHz. |
| Portable Gas Detector Front-End | Industrial PLC Analog Input Module |
Use Scenario: Conditioning electrochemical sensor outputs in battery-powered handheld gas analyzers. IC Role / Device Role / Timing Role: Low-power dual op-amp for sensor amplification and filter buffering in 3.3 V systems. Use Value: 0.7 mA total supply current at 3.3 V extends operating time beyond 12 hours on a 500 mAh Li-ion cell. | Use Scenario: Signal conditioning for 4–20 mA loop receivers in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Dual-stage amplifier: first stage for current-to-voltage conversion, second for level-shifting to ADC input range. Use Value: Input common-mode range including ground allows direct connection to passive loop receivers without level-shift circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual low-power op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM358DT | SO8 package, same electrical specs, −40 °C to +105 °C operating range | Broader temperature coverage suits automotive under-hood use | Select when extended thermal range and standard SO8 footprint are required. |
| TLV2372IDR | Rail-to-rail input/output, 1.8 V to 5.5 V supply, 3 MHz GBW, higher quiescent current (120 µA per amp) | Enables ultra-low-voltage operation but requires tighter supply regulation | Select for battery-powered designs below 3 V or where full rail-to-rail I/O is mandatory. |
Compared with LM358DT, LM358WST offers smaller MiniSO8 footprint and lower cost for commercial-temperature applications; compared with TLV2372IDR, it trades bandwidth and rail-to-rail input for wider supply range and lower power - making it optimal for fixed 5 V industrial signal chains.
Availability
LM358WST is available at Aetrix Electronics and suitable for temperature sensor interfaces, DC motor current sensing, portable gas detector front-ends, and industrial PLC analog input modules requiring stable component supply and long-lifecycle support.
Supply support for LM358WST 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, delivering silicon solutions for automotive, industrial, and consumer markets since 1987.
The LM358W series belongs to ST's general-purpose analog op-amp product line, engineered specifically for cost-effective, reliable signal conditioning in single-supply industrial and consumer electronics - emphasizing supply-voltage independence and ground-referenced operation.
FAQ
Is LM358WST pin-compatible with other LM358 variants?
Yes - LM358WST uses the standard 8-pin MiniSO8 pinout matching LM358AWST and LM258WST. Pin functions (e.g., Pin 1 = Output 1, Pin 4 = GND) are identical across all W-series dual op-amps from ST, enabling drop-in replacement within the same package type.
Can LM358WST drive a 10 kΩ load at 5 V supply?
Yes - at VCC+ = 5 V, LM358WST delivers low-level output voltage (VOL) ≤20 mV into 10 kΩ, and high-level output (VOH) ≥2.6 V. Its output stage sustains ±20 mA sink/source capability, ensuring stable performance driving typical ADC input impedances and LED indicators.
What is the maximum capacitive load LM358WST can drive without oscillation?
LM358WST remains stable with up to 100 pF capacitive load in unity-gain configuration, as verified by phase margin >45° in Figure 17 of the datasheet. For loads exceeding 100 pF, a series resistor (≥100 Ω) between output and capacitance is recommended to maintain stability.
Does LM358WST support rail-to-rail input operation?
No - LM358WST features PNP input transistors, enabling input common-mode voltage down to ground but not up to VCC+. The upper limit is VCC+ − 1.5 V. For true rail-to-rail input, consider ST's TSZ122 or TI's TLV2372, which use complementary input stages.
LM358WST Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 0.6V/µs
- Gain Bandwidth Product:
- 1.1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 20 nA
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 700µA
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MiniSO
LM358WST FAQ
1.How can I place an order for LM358WST through Aetrix?
Please submit a Request for Quotation (RFQ) for LM358WST 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 LM358WST reliable?
The price and inventory of LM358WST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM358WST is usually 5 days.
3.What payment methods are accepted for LM358WST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM358WST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM358WST?
LM358WST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM358WST 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 LM358WST?
For technical support, including LM358WST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM358WST requirements.
6.How does Aetrix verify that LM358WST is sourced from the original manufacturer or authorized distributors?
All LM358WST 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 LM358WST meets industry standards.
7.What is the process for return or replacement of LM358WST?
All LM358WST units undergo pre-shipment inspection (PSI). If there is an issue with LM358WST, 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 LM358WST part is unused and in its original packaging.
Return procedure for LM358WST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM358WST Tags
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LM358DT
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