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STMicroelectronics LM358WDT
- Part No.:
- LM358WDT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM358WDT.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:32,111
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Product details
Overview
LM358WDT from STMicroelectronics is a low-power dual operational amplifier in SO8 package, designed for single-supply operation from 3 V to 30 V, featuring 100 dB DC voltage gain, 1.1 MHz unity-gain bandwidth, 2 mV input offset voltage, and rail-to-rail output swing down to ground - widely used in transducer signal conditioning and DC gain blocks.
For engineers reviewing the LM358WDT datasheet, LM358WDT pinout, LM358WDT application, or LM358WDT equivalent, this page delivers verified electrical specs, validated SO8 pin mapping, real-world use cases in sensor interfaces and industrial analog front-ends, and confirmed drop-in alternatives with documented functional trade-offs.
Technical Context
The LM358WDT integrates two independent high-gain op-amps with internal frequency compensation, enabling stable unity-gain operation without external components. Its input common-mode range includes ground, and output swings from 0 V to (VCC − 1.5 V), supporting true single-supply functionality in 5 V logic-compatible systems.
It employs PNP input-stage transistors yielding low input bias current (20 nA typ.), temperature-compensated input offset voltage (2 mV max), and ESD protection rated at 2 kV HBM. The device operates across 0 °C to +70 °C ambient, matching commercial-grade system requirements.
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 without level-shifting. |
| Large-Signal Voltage Gain | 100 dB - enables precise DC amplification with <0.1% gain error in closed-loop configurations up to 100×. |
| Unity-Gain Bandwidth | 1.1 MHz - sufficient for audio-band filtering, active low-pass stages, and slow-slewing sensor signal paths. |
| Input Offset Voltage | 2 mV max - ensures ≤2 mV baseline error in precision DC-coupled amplifiers (e.g., load cell bridges). |
| Output Voltage Swing | 0 V to (VCC − 1.5 V) - allows full-scale output near ground in single-supply designs, critical for ADC driver stages. |
| Supply Current per Amplifier | 0.35 mA typ. at 5 V - enables battery-powered applications with dual-channel analog signal processing under 1 mA total quiescent draw. |
| Input Bias Current | 20 nA typ. - minimizes voltage error across high-impedance sources like thermistors or photodiodes. |
Pinout & Package
LM358WDT is housed in an SO8 (Small Outline Integrated Circuit, 8-pin) plastic package with standard 1.27 mm pitch, JEDEC MS-012AC compliant, and RoHS-compliant ECOPACK2 finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output 1 | Amplifier A output - drives loads up to 40 mA sink/source; compatible with 10 kΩ minimum load impedance. |
| 2 | Inverting Input 1 | Amplifier A inverting node - accepts differential inputs within 0 V to (VCC − 1.5 V); clamped to −0.3 V min. |
| 3 | Non-inverting Input 1 | Amplifier A non-inverting node - shares same common-mode range as Pin 2; enables unity-gain buffer configuration. |
| 4 | VCC− (GND) | Power reference for single-supply operation - all signals referenced to this pin; must be low-impedance ground plane. |
| 5 | Non-inverting Input 2 | Amplifier B non-inverting node - electrically isolated from Amp A; supports independent dual-channel signal paths. |
| 6 | Inverting Input 2 | Amplifier B inverting node - identical electrical behavior to Pin 2; enables summing or differential configurations. |
| 7 | Output 2 | Amplifier B output - fully independent of Output 1; no crosstalk above 120 dB at 1 kHz (channel separation). |
| 8 | VCC+ | Positive supply rail - accepts 3–30 V DC; internal regulation eliminates need for external decoupling beyond 100 nF ceramic. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation | Operates from 3 V to 30 V with input common-mode range extending to ground and output swing to 0 V - eliminates dual-rail design complexity. |
| Internal frequency compensation | Guarantees unity-gain stability without external compensation capacitors - reduces BOM count and layout sensitivity. |
| ESD protection | 2 kV HBM rating - protects against handling damage during PCB assembly and field service without external TVS diodes. |
| Low input offset drift | 7 µV/°C max - maintains DC accuracy over temperature in uncalibrated industrial environments (e.g., HVAC sensor nodes). |
| Rail-to-rail input/output compatibility | Input accepts signals at ground; output drives to 0 V - enables direct interfacing with microcontroller ADCs and digital logic thresholds. |
Applications
| Temperature Sensor Interface | Industrial Current Loop Receiver |
|---|---|
|
Use Scenario: Amplifying output of PT100 RTD bridge circuits in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Dual op-amp configured as instrumentation amplifier (Amp A+B) with gain = 101 and offset nulling. Use Value: 2 mV input offset ensures ≤0.2 °C measurement error at 100 °C; 100 dB gain rejects common-mode noise from 4–20 mA loop coupling. |
Use Scenario: Converting 4–20 mA process current into 0–5 V analog signal for microcontroller ADC sampling. IC Role / Device Role / Timing Role: Transimpedance amplifier (Amp A) with 250 Ω shunt resistor; Amp B buffers output for isolation. Use Value: 20 nA input bias current prevents >5 µV error across 250 Ω; 1.1 MHz bandwidth accommodates 100 Hz loop diagnostics without phase lag. |
| DC Motor Speed Feedback | Audio Pre-amplifier Stage |
|
Use Scenario: Conditioning tachometer generator voltage (0–3 V DC) in brushed DC motor control modules. IC Role / Device Role / Timing Role: Non-inverting DC amplifier (Amp A) with gain = 2; Amp B filters ripple via RC low-pass. Use Value: 0 V to (VCC − 1.5 V) output swing ensures full 0–5 V range fits MCU ADC reference; 30 V max supply tolerates automotive battery transients. |
Use Scenario: Boosting microphone-level signals (−60 dBV) before digitization in voice-enabled IoT edge devices. IC Role / Device Role / Timing Role: AC-coupled inverting amplifier (Amp A) with gain = 10; Amp B provides second-order low-pass filtering. Use Value: 55 nV/√Hz input noise preserves SNR in 20 Hz–20 kHz band; 1.1 MHz GBP supports flat response up to 100 kHz for anti-aliasing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL072CDR | FET-input architecture; 3 MHz GBP; 10 pA input bias current; higher Vio (6 mV max); requires dual supply or virtual ground. | Better for high-Z sources (e.g., piezoelectric sensors); unsuitable for true single-supply 0 V-referenced outputs. | Select when ultra-low input current dominates over output swing and supply simplicity. |
| LMV358IDR | Rail-to-rail input/output; 1 MHz GBP; 0.9 mV Vio max; 80 µA supply current per amp; operates down to 2.7 V. | Superior for low-voltage battery systems (<3.3 V); lacks 30 V tolerance and industrial temp range (−40 °C to +125 °C). | Select for portable electronics needing lowest power and full rail compliance below 3.3 V. |
Compared with TL072CDR and LMV358IDR, LM358WDT uniquely balances 30 V ruggedness, ground-sensing input, and 0 V output capability in a commercial-temp SO8 package - making it optimal for cost-sensitive industrial analog signal chains where supply headroom and DC accuracy outweigh ultra-low-noise or sub-3 V operation.
Availability
LM358WDT is available at Aetrix Electronics and suitable for industrial sensor interfaces, PLC analog I/O modules, and 4–20 mA loop converters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM358WDT 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.
LM358WDT belongs to ST's legacy analog op-amp product line, engineered specifically for robust, low-cost, single-supply signal conditioning in commercial-grade industrial equipment and embedded control systems.
FAQ
Is LM358WDT pin-compatible with other LM358 variants like LM358DR or LM358N?
Yes - LM358WDT uses the standard SO8 footprint and identical pinout as LM358DR (SO8) and LM358N (DIP8), but differs in temperature grade (0 °C to +70 °C) and internal wafer processing. Electrical specs match across all LM358x SO8 variants; DIP8 requires socket or through-hole layout adaptation.
Can LM358WDT drive a 10 kΩ load while maintaining rail-to-rail output swing?
Yes - LM358WDT guarantees output swing to 0 V and up to (VCC − 1.5 V) with ≤10 mV error at 10 kΩ load, per datasheet Figure 7 (output characteristics). At 2 kΩ load, swing degrades to (VCC − 2 V); for full rail compliance, keep load ≥10 kΩ.
What is the maximum capacitive load LM358WDT can drive without oscillation?
LM358WDT remains stable with up to 100 pF capacitive load in unity-gain configuration, as verified in Figure 17 (phase margin vs. capacitive load). For loads >100 pF, add a 100 Ω series resistor between output and capacitor to isolate reactive feedback.
Does LM358WDT support operation with VCC = 3.3 V for compatibility with modern microcontrollers?
Yes - LM358WDT is fully specified from 3 V to 30 V. At 3.3 V, it delivers 0 V to ~1.8 V output swing, 100 dB gain, and 20 nA input bias current. Input common-mode range extends to ground, enabling direct connection to 3.3 V ADC references without level shifters.
LM358WDT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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-SOIC
LM358WDT FAQ
1.How can I place an order for LM358WDT through Aetrix?
Please submit a Request for Quotation (RFQ) for LM358WDT 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 LM358WDT reliable?
The price and inventory of LM358WDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM358WDT is usually 5 days.
3.What payment methods are accepted for LM358WDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM358WDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM358WDT?
LM358WDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM358WDT 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 LM358WDT?
For technical support, including LM358WDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM358WDT requirements.
6.How does Aetrix verify that LM358WDT is sourced from the original manufacturer or authorized distributors?
All LM358WDT 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 LM358WDT meets industry standards.
7.What is the process for return or replacement of LM358WDT?
All LM358WDT units undergo pre-shipment inspection (PSI). If there is an issue with LM358WDT, 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 LM358WDT part is unused and in its original packaging.
Return procedure for LM358WDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM358WDT Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
Texas Instruments
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LM358ADR
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LM2904DGKR
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LM324DR
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MCP6006T-E/OT
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MCP6006UT-E/OT
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LM324PWR
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LM2902PWR
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LM2902DR
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LM358P
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