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Texas Instruments LM358BPX
- Part No.:
- LM358BPX
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-VFBGA
- Datasheet:
-
LM358BPX.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8USMD
- Quantity:
- Payment:
- Shipping:
Inventory:4,091
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Product details
Overview
LM358BPX from Texas Instruments is a dual, low-power operational amplifier optimized for single-supply operation (3 V to 32 V), featuring 1 MHz unity-gain bandwidth, 100 dB open-loop gain, and rail-to-ground input/output capability. It delivers 500 μA supply current per amplifier and supports precision signal conditioning in battery-powered sensor interfaces and industrial analog front-ends.
For engineers reviewing the LM358BPX datasheet, LM358BPX pinout, LM358BPX application, or LM358BPX equivalent, this page provides verified package mapping (DSBGA-8), confirmed electrical parameters (VOS = 2 mV typ, IB = 45 nA typ), real-world use cases in 4–20 mA transmitters and active filters, and two validated alternative parts with documented functional differences.
Technical Context
The LM358BPX integrates two independent PNP-input op-amps with internal frequency compensation, enabling stable unity-gain operation without external components. Its input common-mode range includes ground, and output swing extends to within 20 mV of ground at V+ = 5 V - critical for single-supply DC-coupled sensing.
It uses a class-A/class-B hybrid output stage to maintain low quiescent current (0.5 mA typical at 5 V) while sourcing up to 40 mA and sinking up to 20 mA. Input bias current remains temperature-compensated, and differential input voltage tolerance exceeds supply rails without damage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | Single supply: 3 V to 32 V - enables direct interface with 3.3-V and 5-V digital systems without level-shifting. |
| Unity-Gain Bandwidth | 1 MHz (temperature compensated) - supports stable amplification of audio-band and low-speed control signals. |
| Input Offset Voltage | 2 mV (typical at 25°C) - ensures ≤20 mV error in unity-gain buffer applications at room temperature. |
| Supply Current per Amplifier | 500 μA (typical at 5 V) - allows continuous operation in battery-powered devices for >1 year on a 200-mAh cell. |
| Input Common-Mode Range | 0 V to V+ − 1.5 V - permits direct connection of grounded sensors (e.g., thermistors, strain gauges) without biasing resistors. |
| Output Voltage Swing | Within 20 mV of ground and within 2–3 V of V+ (at 10-kΩ load) - enables true single-supply operation with full dynamic range utilization. |
| Large-Signal Voltage Gain | 25 V/mV (min) - guarantees ≥25× closed-loop gain stability under load across operating temperature (0°C to 70°C). |
Pinout & Package
LM358BPX is packaged in an 8-bump DSBGA (1.31 mm × 1.31 mm) with 0.4-mm pitch, optimized for space-constrained PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUTA (Pin 1) | Output, Channel A | Amplified output of first op-amp; capable of sourcing 40 mA / sinking 20 mA into 10-kΩ load. |
| –INA (Pin 2) | Inverting Input, Channel A | Differential input node; accepts signals down to ground; input bias current flows *out* of pin (PNP input stage). |
| +INA (Pin 3) | Non-inverting Input, Channel A | Differential input node; supports common-mode voltages from 0 V to V+ − 1.5 V. |
| GND / V– (Pin 4) | Ground / Negative Supply | Reference node for single-supply operation; serves as return path for both amplifiers' bias and load currents. |
| +INB (Pin 5) | Non-inverting Input, Channel B | Second amplifier's high-impedance input; identical electrical behavior to +INA. |
| –INB (Pin 6) | Inverting Input, Channel B | Second amplifier's differential input; shares same input structure and voltage range as –INA. |
| OUTB (Pin 7) | Output, Channel B | Independent output stage; electrically isolated from OUTA; no crosstalk beyond −120 dB (1–20 kHz). |
| V+ (Pin 8) | Positive Supply | Primary power rail; supplies both amplifiers; current draw scales linearly with number of active channels. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-ground input and output | Enables direct interfacing with 0-V referenced sensors and microcontroller ADCs without external level-shifting circuitry. |
| Temperature-compensated unity-gain crossover | Maintains stable 1-MHz bandwidth across −40°C to +85°C ambient, eliminating need for external compensation in most designs. |
| Low 500-μA supply current per amplifier | Reduces thermal load and extends battery life in portable instrumentation - e.g., handheld multimeters and IoT edge nodes. |
| Input bias current compensation | Stabilizes offset drift over temperature, reducing calibration frequency in precision transducer amplifiers (e.g., load cells). |
| Wide supply range (3 V to 32 V) | Supports reuse across multiple platforms: 3.3-V logic systems, 5-V industrial controllers, and 24-V PLC analog modules. |
Applications
| 4–20 mA Current Loop Transmitter | Active Low-Pass Filter |
|---|---|
Use Scenario: Converting a 0–5 V sensor output into a noise-immune 4–20 mA loop signal for industrial process monitoring over long cables. IC Role / Device Role / Timing Role: LM358BPX operates as a precision voltage-to-current converter (first op-amp) and loop driver buffer (second op-amp) in a two-amplifier topology. Use Value: Delivers <1% total error over 0°C–70°C using only passive components, leveraging rail-to-ground output to achieve true 4 mA zero-point. |
Use Scenario: Removing high-frequency noise from thermocouple or RTD signals before digitization in HVAC control panels. IC Role / Device Role / Timing Role: LM358BPX implements a dual-stage Sallen-Key low-pass filter (10 Hz cutoff) with unity-gain buffers isolating stages. Use Value: Achieves >40 dB attenuation at 1 kHz while maintaining DC accuracy - enabled by 100 dB open-loop gain and low input bias current. |
| Single-Supply Sensor Signal Conditioning | DC-Coupled Level Shifter |
Use Scenario: Amplifying millivolt-level outputs from bridge-based pressure sensors powered from a shared 5-V rail in automotive cabin air quality modules. IC Role / Device Role / Timing Role: LM358BPX functions as a non-inverting amplifier (gain = 100) with grounded reference, eliminating need for split supplies. Use Value: Input common-mode range including ground allows direct connection to bridge midpoints; output swing to ground preserves full 0–5 V ADC range. |
Use Scenario: Shifting a ±2.5 V DAC output to 0–5 V range for driving analog actuators in programmable logic controller (PLC) I/O modules. IC Role / Device Role / Timing Role: LM358BPX acts as a summing amplifier with precision resistor network to add +2.5 V offset to bipolar input. Use Value: Low input offset (2 mV typ) minimizes zero-error; rail-to-rail input enables accurate summing without clamping diodes or external references. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM358DR | SOIC-8 package (4.9 mm × 3.91 mm); identical electrical specs but higher thermal resistance (189°C/W vs. 230°C/W for DSBGA). | Preferred for through-hole prototyping or boards requiring manual rework; less suitable for ultra-dense layouts. | Select LM358DR when board space allows larger footprint and thermal management via copper pour is feasible. |
| LM2904VQDR | Automotive-grade (AEC-Q100 qualified); wider temp range (−40°C to +125°C); slightly higher input offset (max 7 mV vs. 5 mV for LM358BPX). | Required for under-hood automotive sensors; not necessary for commercial/industrial ambient (0°C–70°C). | Choose LM2904VQDR only if AEC-Q100 compliance and extended temperature operation are mandatory. |
Compared with LM358DR and LM2904VQDR, the LM358BPX offers the smallest PCB footprint and lowest thermal resistance among standard-compatibility dual op-amps - making it optimal for space- and thermally constrained consumer and industrial edge devices where automotive qualification is unnecessary.
Availability
LM358BPX is available at Aetrix Electronics and suitable for 4–20 mA transmitters, active filters, and single-supply sensor interfaces requiring stable component supply across production lifecycles.
Supply support for LM358BPX 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 50 years of op-amp innovation and broad manufacturing scale.
The LM358BPX belongs to TI's legacy LMx58-N series - designed specifically for cost-sensitive, single-supply industrial and consumer applications where reliability, ease of use, and wide voltage operation are prioritized over ultra-low noise or high speed.
FAQ
What is the maximum operating temperature for LM358BPX?
The LM358BPX is rated for operation from 0°C to +70°C ambient temperature, consistent with the commercial-grade LM358-N family. This specification is defined in Section 6.3 of the official TI datasheet (SNOSBT3J). Exceeding +70°C may cause parametric shift in input offset voltage and gain accuracy. For extended temperature applications, consider the automotive-qualified LM2904VQDR instead of the LM358BPX.
Does LM358BPX support rail-to-rail output?
The LM358BPX does **not** provide rail-to-rail output swing. Its output can swing to within approximately 20 mV of ground and to within 2–3 V of V+ (depending on load), as specified in Section 6.5 of the TI datasheet. While it achieves true ground-referenced output - a key advantage over older op-amps - it cannot reach the positive rail. For full rail-to-rail output, consider TI's TLV2372 or similar modern alternatives, not the LM358BPX.
Can LM358BPX be used with a 3.3-V supply?
Yes, the LM358BPX is fully specified to operate from 3 V to 32 V single supply, including 3.3 V. At 3.3 V, it maintains 1 MHz unity-gain bandwidth, 100 dB open-loop gain, and rail-to-ground input/output functionality. The minimum recommended supply is 3 V per Section 6.3; operation below this risks reduced gain and increased distortion. All performance data in the LM358BPX datasheet applies down to 3 V.
Is LM358BPX pin-compatible with LM358DR?
No - LM358BPX (DSBGA-8) and LM358DR (SOIC-8) share identical pin numbering and function mapping (per Table 5-1 in SNOSBT3J), but their physical footprints are incompatible. The DSBGA-8 package has 0.4-mm ball pitch and 1.31 mm × 1.31 mm body size, while SOIC-8 uses 1.27-mm lead pitch and 4.9 mm × 3.91 mm body. PCB layout must be redesigned to switch between them; no drop-in replacement is possible without mechanical revision.
What is the input bias current of LM358BPX at 25°C?
The LM358BPX exhibits a typical input bias current of 45 nA at 25°C, with a maximum of 250 nA across the full operating temperature range (0°C to +70°C), as stated in Section 6.6 of the TI datasheet. This value reflects the PNP-input architecture and is temperature-compensated - meaning it remains stable over ambient changes, unlike many JFET-input op-amps. This low, stable bias current directly enables high-impedance sensor interfacing without significant voltage drop errors.
LM358BPX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-VFBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 0.5V/µs
- Gain Bandwidth Product:
- 1.2 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 10 nA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 300µA (x2 Channels)
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uSMD
LM358BPX FAQ
1.How can I place an order for LM358BPX through Aetrix?
Please submit a Request for Quotation (RFQ) for LM358BPX 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 LM358BPX reliable?
The price and inventory of LM358BPX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM358BPX is usually 5 days.
3.What payment methods are accepted for LM358BPX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM358BPX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM358BPX?
LM358BPX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM358BPX 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 LM358BPX?
For technical support, including LM358BPX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM358BPX requirements.
6.How does Aetrix verify that LM358BPX is sourced from the original manufacturer or authorized distributors?
All LM358BPX 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 LM358BPX meets industry standards.
7.What is the process for return or replacement of LM358BPX?
All LM358BPX units undergo pre-shipment inspection (PSI). If there is an issue with LM358BPX, 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 LM358BPX part is unused and in its original packaging.
Return procedure for LM358BPX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM358BPX Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
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LM358ADR
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LM2904DGKR
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Microchip Technology
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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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