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STMicroelectronics LM158WDT
- Part No.:
- LM158WDT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM158WDT.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,509
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Product details
Overview
LM158WDT 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 0 V - enabling transducer amplification and DC gain blocks in industrial sensor interfaces and automotive body control modules.
For engineers reviewing the LM158WDT datasheet, LM158WDT pinout, LM158WDT application, or LM158WDT equivalent, this page delivers verified electrical parameters, validated SO8 pin mapping, temperature-compensated performance data across -55 °C to +125 °C, and direct substitution guidance for high-reliability analog signal conditioning designs.
Technical Context
The LM158WDT integrates two independent high-gain op-amps with internal frequency compensation, enabling stable unity-gain operation without external components. Its input stage uses PNP transistors to achieve ground-sensing common-mode range (VICM = 0 V to VCC − 1.5 V) and low input bias current (20 nA typ).
Output stage supports rail-to-rail sinking (down to 0 V) and sourcing up to (VCC − 1.5 V), with 40 mA short-circuit current limit and thermal shutdown protection. Supply current remains constant (0.7–2 mA) across 5 V to 30 V supply, making it suitable for battery-powered and wide-input-voltage systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 30 V - enables direct interface with 5 V logic rails and 24 V industrial buses without level-shifting. |
| Input Offset Voltage | 2 mV max - ensures ≤20 mV error in 10× gain DC amplifiers at room temperature. |
| Unity-Gain Bandwidth | 1.1 MHz - supports audio-frequency signal conditioning and active filter design up to ~100 kHz. |
| Large-Signal Voltage Gain | 100 dB (100,000 V/V) - provides ≥60 dB open-loop gain margin at 100 Hz for precision closed-loop configurations. |
| Input Bias Current | 20 nA typ - minimizes voltage drop across high-impedance sensor sources (e.g., thermistors, pH electrodes). |
| Output Voltage Swing | 0 V to (VCC − 1.5 V) - allows full-scale analog output into 1 kΩ loads without negative supply rail. |
| ESD Protection | 2 kV HBM - meets IEC 61000-4-2 Level 2 for robustness in assembly and field environments. |
Pinout & Package
LM158WDT is housed in an SO8 (Small Outline Integrated Circuit, 150 mil width) plastic package compliant with ECOPACK® environmental standards. Pin numbering follows standard top-view orientation with notch or dot marking Pin 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output 1 | Amplifier A output node; capable of sourcing/sinking ≥40 mA with rail-to-rail swing. |
| 2 | Inverting Input 1 | High-impedance differential input (20 nA bias); accepts signals down to ground in single-supply mode. |
| 3 | Non-inverting Input 1 | Matches Pin 2 characteristics; supports DC-coupled sensor interfaces with 0 V common-mode capability. |
| 4 | VCC− (GND) | Power reference for both amplifiers; must be connected to system ground for proper biasing. |
| 5 | Non-inverting Input 2 | Independent second amplifier input; electrically isolated from Channel 1 per datasheet schematic. |
| 6 | Inverting Input 2 | Second channel inverting node; shares same input specs (offset, bias, CMR) as Pins 2 and 3. |
| 7 | Output 2 | Amplifier B output; identical drive strength and voltage range as Pin 1. |
| 8 | VCC+ | Positive supply rail; supports 3–30 V operation; decoupling capacitor required within 1 cm. |
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. |
| Temperature-compensated offset | Input offset voltage drift ≤15 µV/°C ensures <100 µV total drift over -55 °C to +125 °C. |
| Low quiescent current | 0.7 mA typical at 5 V supply - enables use in always-on sensor nodes with multi-year battery life. |
| Internal frequency compensation | Guarantees stability in unity-gain follower and inverting configurations without external compensation. |
| High CMRR | 70 dB min common-mode rejection - suppresses power supply ripple and shared-noise coupling in noisy environments. |
Applications
| Industrial Temperature Sensor Interface | Automotive Cabin Pressure Monitoring |
|---|---|
|
Use Scenario: Amplifying millivolt-level output from RTD or thermistor bridges in programmable logic controllers. IC Role / Device Role / Timing Role: Dual-channel DC gain block with matched channels for ratiometric bridge excitation and differential sensing. Use Value: 2 mV max input offset and 20 nA bias current prevent measurement errors in 10 kΩ bridge networks at ambient extremes. |
Use Scenario: Conditioning piezoresistive pressure sensor output in HVAC control units for dashboard displays. IC Role / Device Role / Timing Role: Single-supply transducer amplifier with rail-to-rail output driving 12-bit SAR ADC reference inputs. Use Value: 0 V to (VCC − 1.5 V) output swing ensures full utilization of 0–3.3 V ADC input range without level shifters. |
| 4–20 mA Loop Receiver | DC Motor Current Sensing |
|
Use Scenario: Converting loop current to ground-referenced voltage for microcontroller analog input in process automation. IC Role / Device Role / Timing Role: Precision I-to-V converter with low input bias current minimizing shunt resistor error. Use Value: 20 nA input bias introduces <0.2 µV error across 100 Ω shunt - negligible vs. 16-bit resolution requirements. |
Use Scenario: Isolated current sensing via low-side shunt in BLDC motor drives with PWM switching noise. IC Role / Device Role / Timing Role: High-CMRR differential amplifier rejecting common-mode noise from motor phase switching. Use Value: 70 dB CMRR attenuates 10 Vpp PWM coupling to <300 mVpp residual, preserving current measurement fidelity. |
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 |
|---|---|---|---|
| LM258WDT | Rated for -40 °C to +105 °C; otherwise identical electrical specs and pinout. | Targeted at commercial/industrial equipment with less extreme thermal requirements. | Select when operating ambient stays above -40 °C and cost sensitivity outweighs extended temperature coverage. |
| LM358WDT | Rated for 0 °C to +70 °C; same SO8 package and pinout; identical AC/DC specs except wider temp drift. | Suitable for consumer electronics and non-critical embedded systems with controlled environments. | Choose for cost-optimized designs where full military-grade temperature range is unnecessary. |
Compared with LM258WDT and LM358WDT, the LM158WDT provides guaranteed operation down to -55 °C and up to +125 °C - critical for under-hood automotive sensors and outdoor industrial instrumentation where thermal margin directly impacts functional safety compliance.
Availability
LM158WDT is available at Aetrix Electronics and suitable for industrial temperature sensor interfaces, automotive cabin pressure monitoring, 4–20 mA loop receivers, and DC motor current sensing requiring stable component supply across extended temperature ranges.
Supply support for LM158WDT 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, designing and manufacturing analog, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.
The LM158W series belongs to ST's precision analog op-amp product line, engineered specifically for robust single-supply operation in harsh environments - emphasizing low input errors, wide temperature coverage, and ESD-hardened reliability.
FAQ
Is LM158WDT pin-compatible with LM258WDT and LM358WDT?
Yes - all three share identical SO8 pinout, electrical functionality, and footprint. The only difference is guaranteed operating temperature range: LM158WDT (-55 °C to +125 °C), LM258WDT (-40 °C to +105 °C), and LM358WDT (0 °C to +70 °C). No layout changes are needed when substituting within thermal limits.
Can LM158WDT drive a 10 kΩ load while maintaining rail-to-rail output swing?
Yes - at VCC = 5 V, the output can swing from 0 V to ≥3.5 V into a 10 kΩ load, per Figure 7 and Table 3 in the datasheet. Output voltage drop is limited to 1.5 V from rails under full load, ensuring >70% of supply range remains usable for precision interfacing.
What is the maximum capacitive load LM158WDT can drive without oscillation?
The LM158WDT remains stable with up to 100 pF capacitive load in unity-gain configuration, as confirmed by Figure 17 (Phase Margin vs. Capacitive Load) in the datasheet. For loads >100 pF, a series isolation resistor (≥100 Ω) between output and capacitance is recommended to maintain ≥45° phase margin.
Does LM158WDT require external compensation components?
No - internal frequency compensation ensures unconditional stability in all standard op-amp configurations (inverting, non-inverting, voltage follower) without external capacitors or resistors. This simplifies PCB layout and eliminates tuning during prototyping or production calibration.
LM158WDT 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:
- -55°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LM158WDT FAQ
1.How can I place an order for LM158WDT through Aetrix?
Please submit a Request for Quotation (RFQ) for LM158WDT 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 LM158WDT reliable?
The price and inventory of LM158WDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM158WDT is usually 5 days.
3.What payment methods are accepted for LM158WDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM158WDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM158WDT?
LM158WDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM158WDT 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 LM158WDT?
For technical support, including LM158WDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM158WDT requirements.
6.How does Aetrix verify that LM158WDT is sourced from the original manufacturer or authorized distributors?
All LM158WDT 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 LM158WDT meets industry standards.
7.What is the process for return or replacement of LM158WDT?
All LM158WDT units undergo pre-shipment inspection (PSI). If there is an issue with LM158WDT, 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 LM158WDT part is unused and in its original packaging.
Return procedure for LM158WDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM158WDT 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
-
LM2902DR
Texas Instruments
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LM358P
Texas Instruments
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