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STMicroelectronics LM158DT
- Part No.:
- LM158DT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM158DT.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:144,996
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Product details
Overview
LM158DT from STMicroelectronics is a low-power dual operational amplifier designed for single-supply operation across -55 °C to +125 °C, featuring 100 dB DC gain, 1.1 MHz unity-gain bandwidth, 2 mV input offset voltage, 20 nA input bias current, and rail-to-rail output swing down to 0 V - enabling precision signal conditioning in industrial sensor interfaces and 5 V logic-compatible analog front-ends.
For engineers reviewing the LM158DT datasheet, LM158DT pinout, LM158DT application, or LM158DT equivalent, this page delivers verified electrical specifications, SO8 package layout, real-world use cases in transducer amplification and DC gain blocks, and validated alternative parts with documented functional differences.
Technical Context
The LM158DT integrates two independent, internally frequency-compensated op amps optimized for stable operation from 3 V to 30 V single supply. Its PNP-input stage enables input common-mode voltage range extending to the negative rail (GND), while output swing reaches within 1.5 V of VCC+ and down to 0 V - critical for ground-referenced sensing.
It delivers 0.6 V/µs slew rate and 0.7–1.1 MHz gain-bandwidth product under load, with 70–85 dB common-mode rejection and 65–100 dB supply voltage rejection. Input offset drift is 7–15 µV/°C (A-grade), and channel separation exceeds 120 dB at 1–20 kHz - supporting multi-channel isolation in compact systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3 V to 30 V single supply - eliminates need for split rails in battery-powered or 5 V/24 V industrial systems. |
| DC Voltage Gain | 100 dB - supports high-precision closed-loop gain accuracy in instrumentation amplifier stages. |
| Unity-Gain Bandwidth | 1.1 MHz (temperature compensated) - enables stable AC-coupled amplification up to ~100 kHz at moderate gains. |
| Input Offset Voltage | 2 mV (max, LM158A grade) - ensures ≤0.2% error in 1 V full-scale DC measurement without trimming. |
| Input Bias Current | 20 nA (typical) - minimizes voltage drop across high-impedance sensor sources (e.g., thermistors, pH electrodes). |
| Output Voltage Swing | 0 V to (VCC+ − 1.5 V) - allows direct interfacing with ADCs or logic inputs requiring near-ground-level low output. |
| Common-Mode Input Range | Includes negative rail (GND) - permits accurate amplification of signals referenced to system ground in single-supply topologies. |
Pinout & Package
LM158DT is supplied in an SO8 (Small Outline 8-pin) package per ECOPACK® standards, with 1.27 mm pitch, 4.9 mm width, and exposed pad not present - suitable for standard reflow assembly and IPC-compliant PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output A | Amplifier A output; drives loads up to 40 mA sink/source, swings 0 V to VCC+−1.5 V. |
| 2 | Inverting Input A | High-impedance (≥1 MΩ) node for feedback network connection; accepts signals down to GND. |
| 3 | Non-inverting Input A | High-Z input for reference or sensor signal; common-mode range includes GND and extends to VCC+−2 V. |
| 4 | VCC− (GND) | Power return for both amplifiers; must be low-impedance path to minimize noise coupling between channels. |
| 5 | Non-inverting Input B | Independent input for second amplifier; electrically isolated from Channel A except via shared supply rails. |
| 6 | Inverting Input B | Feedback node for Channel B; supports identical configuration options as Pin 2 (e.g., inverting/non-inverting gain). |
| 7 | Output B | Second amplifier output; matches Pin 1 performance including drive capability and voltage swing limits. |
| 8 | VCC+ | Positive supply rail; supplies both amplifiers; current draw is 0.7–1.2 mA total (all channels, 5 V). |
Key Features
| Feature | Design Value |
|---|---|
| Internal frequency compensation | Enables stable unity-gain operation without external components - reduces BOM count and layout sensitivity. |
| Rail-to-rail input common-mode range | Accepts signals from GND to VCC+−2 V - simplifies level-shifting in single-supply sensor signal chains. |
| Low input bias current (20 nA) | Maintains accuracy with high-source-impedance transducers (e.g., piezoelectric sensors, photodiodes). |
| Temperature-compensated bandwidth | 1.1 MHz gain-bandwidth remains stable over −55 °C to +125 °C - ensures consistent dynamic response in harsh environments. |
| Dual-channel isolation | 120 dB channel separation at audio frequencies - prevents crosstalk in multi-signal monitoring applications. |
Applications
| Industrial Temperature Sensing | Automotive Cabin Pressure Monitoring |
|---|---|
|
Use Scenario: Amplifying low-level mV outputs from platinum RTD or thermistor bridges in programmable logic controllers. IC Role / Device Role / Timing Role: Dual-channel DC gain block: Channel A conditions bridge excitation feedback; Channel B amplifies sensor voltage with 100× gain and low-drift offset. Use Value: 2 mV max offset and 7 µV/°C drift enable ±0.5 °C accuracy over −40 °C to +85 °C without calibration. |
Use Scenario: Signal conditioning for MEMS pressure sensors in HVAC control modules, operating from 5 V vehicle bus. IC Role / Device Role / Timing Role: Single-supply transducer amplifier: converts ratiometric pressure output (0.5–4.5 V) to full-scale 0–5 V for 12-bit ADC sampling. Use Value: Input common-mode range including GND and rail-to-rail output ensure full dynamic range utilization with no level-shifting circuitry. |
| Programmable DC Power Supply Feedback | Medical Patient Monitor Front-End |
|
Use Scenario: Closed-loop voltage/current regulation in benchtop power supplies using DAC-controlled reference and shunt sensing. IC Role / Device Role / Timing Role: Dual op amp implementing error amplifier (Channel A) and current-sense comparator hysteresis (Channel B) in same footprint. Use Value: 100 dB open-loop gain ensures <0.01% regulation error; 40 mA output drive directly interfaces with pass transistor base/gate. |
Use Scenario: Biopotential signal amplification (ECG/EMG) with high-pass filtering and gain staging prior to isolation barrier. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier core: configured as high-Z differential pair with matched resistors for CMRR >80 dB. Use Value: 20 nA input bias current prevents electrode polarization errors; 120 dB channel separation avoids cross-talk between lead I/II/III paths. |
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 |
|---|---|---|---|
| LM258DT | Wider operating temperature range (−40 °C to +105 °C) but higher 5 mV max input offset voltage vs. LM158DT's 2 mV (A-grade). | Preferred for commercial/industrial equipment where extended temp range outweighs ultra-low offset needs. | Select LM258DT when ambient operating temperature exceeds 85 °C but sub-mV offset is not required. |
| LM358DT | Commercial-grade (0 °C to +70 °C), 7 mV max input offset, lower ESD rating (300 V HBM vs. LM158DT's 300 V HBM but different test conditions). | Suitable for cost-sensitive consumer electronics where full industrial temp range and lowest offset are unnecessary. | Choose LM358DT only for benign-environment applications with relaxed accuracy and reliability requirements. |
Compared with LM258DT and LM358DT, the LM158DT provides the widest temperature range (−55 °C to +125 °C) and tightest input offset (2 mV), making it uniquely suited for aerospace, downhole, and military-grade analog signal chains where long-term stability under thermal stress is non-negotiable.
Availability
LM158DT is available at Aetrix Electronics and suitable for industrial temperature sensing, automotive cabin pressure monitoring, programmable DC power supply feedback, and medical patient monitor front-end designs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM158DT 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 smart driving, power management, and analog/mixed-signal applications since 1987.
The LM158 series belongs to ST's precision analog portfolio, engineered specifically for robust, low-power dual op amp operation in single-supply industrial and automotive systems demanding wide temperature resilience and DC accuracy.
FAQ
Is LM158DT pin-compatible with LM258DT and LM358DT?
Yes - all three share identical SO8 pinout (Pin 1 = Out A, Pin 2 = In− A, Pin 3 = In+ A, Pin 4 = GND, Pin 5 = In+ B, Pin 6 = In− B, Pin 7 = Out B, Pin 8 = VCC+). Electrical behavior differs in offset voltage, temperature range, and ESD robustness, but PCB layout and footprint are fully interchangeable.
Can LM158DT operate from a 3.3 V supply?
Yes - the LM158DT is specified for 3 V to 30 V single-supply operation. At 3.3 V, output swing is guaranteed 0 V to ≥1.8 V, input common-mode range covers 0 V to ≥1.3 V, and quiescent current remains ≤1.2 mA. Performance metrics (GBW, SR, CMRR) scale predictably per datasheet curves.
Does LM158DT require external compensation capacitors?
No - internal frequency compensation ensures unconditional stability in unity-gain follower and inverting/non-inverting configurations up to 1.1 MHz. No external capacitor is needed; adding one degrades bandwidth and is unnecessary unless driving highly capacitive loads (>100 pF) where phase margin optimization is required.
What is the maximum capacitive load LM158DT can drive reliably?
LM158DT maintains ≥45° phase margin driving ≤100 pF loads at unity gain (per Figure 18). For loads >100 pF, series output resistance (≥100 Ω) is recommended to isolate capacitance and preserve stability - confirmed by phase margin vs. capacitive load data across 70–290 pF test points in the datasheet.
LM158DT 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:
- Differential
- Slew Rate:
- 0.6V/µs
- Gain Bandwidth Product:
- 1.1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 20 nA
- Voltage - Input Offset:
- 5 mV
- Current - Supply:
- 700µA (x2 Channels)
- 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
LM158DT FAQ
1.How can I place an order for LM158DT through Aetrix?
Please submit a Request for Quotation (RFQ) for LM158DT 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 LM158DT reliable?
The price and inventory of LM158DT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM158DT is usually 5 days.
3.What payment methods are accepted for LM158DT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM158DT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM158DT?
LM158DT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM158DT 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 LM158DT?
For technical support, including LM158DT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM158DT requirements.
6.How does Aetrix verify that LM158DT is sourced from the original manufacturer or authorized distributors?
All LM158DT 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 LM158DT meets industry standards.
7.What is the process for return or replacement of LM158DT?
All LM158DT units undergo pre-shipment inspection (PSI). If there is an issue with LM158DT, 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 LM158DT part is unused and in its original packaging.
Return procedure for LM158DT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM158DT Tags
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LM358DT
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LM358DR
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LM2904DR
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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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LM2902DR
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