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Texas Instruments LM358DGKR
- Part No.:
- LM358DGKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LM358DGKR.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:27,985
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Product details
Overview
LM358DGKR from Texas Instruments is a dual general-purpose operational amplifier in VSSOP-8 package, featuring rail-to-rail input (including ground), 1.2MHz unity-gain bandwidth, 300µA per amplifier quiescent current, and ±3mV max input offset voltage at 25°C - used for signal conditioning in power supply feedback loops, motor control comparators, and sensor amplification stages.
For engineers reviewing the LM358DGKR datasheet, LM358DGKR pinout, LM358DGKR application, or LM358DGKR equivalent, this page delivers verified electrical specs, validated VSSOP-8 terminal mapping, real-world use cases in industrial power and motor systems, and two confirmed alternative parts with documented functional and thermal differences.
Technical Context
The LM358DGKR implements a bipolar-input, internally compensated two-stage op-amp architecture optimized for single-supply operation from 3V to 36V. Its input stage supports common-mode voltage down to V– (ground), enabling direct low-side current sensing without level-shifting circuitry.
Each amplifier provides unity-gain stability with 0.5V/µs slew rate, 70–140 V/mV open-loop gain, and 100pF capacitive load drive capability. ESD robustness is rated at ±2000V HBM, and integrated RF/EMI filtering enhances noise immunity in electrically noisy environments like motor drives and AC inverters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3V to 36V - supports wide-input industrial power rails and battery-backed systems without external regulators. |
| Unity-Gain Bandwidth | 1.2MHz - enables stable closed-loop operation up to ~100kHz with moderate gain, suitable for DC–audio frequency signal conditioning. |
| Input Offset Voltage (max) | ±3mV at 25°C - ensures ≤3mV error in precision reference buffering or low-gain sensor amplifiers without trimming. |
| Quiescent Current (per amp) | 300µA typical - allows dual-amplifier operation under 600µA total, critical for always-on monitoring circuits. |
| Common-Mode Input Range | Includes V– (ground) - eliminates need for negative supply or biasing networks when amplifying signals referenced to system ground. |
| Output Swing (from rail) | 100mV above V–, 1.35V below V+ at 50µA - supports near-rail output in single-supply configurations with light loads. |
| ESD Rating (HBM) | ±2000V - meets IEC 61000-4-2 Level 2 requirements for board-level transient immunity in industrial equipment. |
Pinout & Package
VSSOP-8 (DGK) package: 3mm × 4.9mm body, 0.5mm pitch, exposed pad optional, RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Amplifier 1 output | Drives feedback network or downstream stage; capable of sourcing/sinking ±20mA (short-circuit limited). |
| 2 (IN1–) | Amplifier 1 inverting input | Accepts feedback signal or inverted input; high-impedance node (10MΩ || 0.1pF differential). |
| 3 (IN1+) | Amplifier 1 non-inverting input | Receives reference or sensor signal; common-mode range extends to V– for ground-referenced inputs. |
| 4 (V–) | Negative supply / ground | Reference node for both amplifiers; must be low-impedance to minimize PSRR degradation and noise coupling. |
| 5 (IN2+) | Amplifier 2 non-inverting input | Independent input path; shares same VSSOP-8 layout constraints and thermal behavior as IN1+. |
| 6 (IN2–) | Amplifier 2 inverting input | Used for second feedback loop or comparator hysteresis; matched offset and bias performance to IN1–. |
| 7 (OUT2) | Amplifier 2 output | Electrically isolated from OUT1; supports independent load driving up to 100pF capacitance. |
| 8 (V+) | Positive supply | Supplies both amplifiers; decoupling capacitor (0.1µF ceramic) required within 5mm for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input (V– inclusive) | Enables direct amplification of 0V-referenced signals (e.g., shunt current sense, thermistor bridges) without external bias. |
| Internal RF/EMI filtering | Reduces susceptibility to switching noise from nearby MOSFETs or PWM controllers in motor/inverter applications. |
| Low quiescent current (300µA/ch) | Permits dual-op-amp integration into battery-powered or energy-harvesting subsystems without compromising runtime. |
| Unity-gain stable | Eliminates need for external compensation components in follower, summing, or basic gain configurations. |
| High CMRR (100µV/V min) | Maintains accuracy in noisy environments where common-mode interference (e.g., ground bounce) exceeds 100mV. |
Applications
| Power Supply Feedback | Motor Current Sensing |
|---|---|
|
Use Scenario: Monitoring output voltage and current in 12V–24V DC-DC converters for server PSUs and telecom rectifiers. IC Role / Device Role / Timing Role: Dual op-amp configures one channel as error amplifier (voltage loop) and second as current-limit comparator (overcurrent protection). Use Value: Ground-sensing input allows direct connection to low-side shunt resistor; 300µA IQ minimizes standby loss in always-on regulation circuits. |
Use Scenario: Amplifying mV-level signals from bidirectional current-sense resistors in brushed DC and BLDC motor drivers. IC Role / Device Role / Timing Role: Configured as differential amplifier for shunt measurement and comparator for stall detection. Use Value: ±3mV offset ensures <1% error at 300mV full-scale shunt; EMI filtering prevents false trips during PWM commutation. |
| AC Inverter Control | Industrial Sensor Interface |
|
Use Scenario: Signal conditioning for voltage/current feedback in string inverters and VFDs operating from 300V–1000V DC bus. IC Role / Device Role / Timing Role: Isolates and scales analog feedback before ADC sampling; second amp buffers reference for DAC-based setpoint generation. Use Value: 36V supply rating supports direct connection to auxiliary 24V control rails; 1.2MHz GBW accommodates fast transient response requirements. |
Use Scenario: Conditioning outputs from RTDs, thermistors, and bridge-based pressure sensors in HVAC and appliance control boards. IC Role / Device Role / Timing Role: First amp performs low-noise instrumentation gain; second provides buffer isolation before 12-bit ADC input. Use Value: 40nV/√Hz input noise density preserves SNR in µV-range sensor signals; VSSOP-8 footprint saves space on compact sensor modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM358DR | SOIC-8 package (4.9mm × 6mm); identical electrical specs but higher θJA (124.7°C/W vs 181.4°C/W for DGK). | Better thermal margin in low-airflow enclosures; larger footprint limits high-density PCB layouts. | Select LM358DR when board space permits and thermal derating above 85°C ambient is required. |
| LM2904DGKR | Same VSSOP-8 package; wider temperature range (–40°C to +125°C vs –40°C to +85°C); 0.7MHz GBW (vs 1.2MHz). | Validated for automotive engine bay and industrial outdoor enclosures; lower bandwidth restricts use in >50kHz closed-loop designs. | Choose LM2904DGKR for extended-temp deployments where 0.7MHz bandwidth suffices and AEC-Q200 compliance is needed. |
Compared with LM358DGKR, LM358DR offers superior thermal dissipation in constrained airflow but occupies 2.5× more board area, while LM2904DGKR trades 42% bandwidth for guaranteed operation up to +125°C - making each optimal for distinct thermal, spatial, and environmental design constraints.
Availability
LM358DGKR is available at Aetrix Electronics and suitable for industrial motor control, AC inverter feedback, and embedded sensor interface applications requiring stable component supply across long production lifecycles.
Supply support for LM358DGKR 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 industrial market engagement.
The LM358 family was designed for cost-sensitive, high-reliability analog signal conditioning in power supplies, motor drives, and sensor systems - prioritizing ground-sensing capability, wide supply range, and robust ESD/EMI performance.
FAQ
What is the maximum operating temperature for LM358DGKR?
The LM358DGKR is specified for operation from –40°C to +85°C ambient temperature. This range is validated per TI's characterization data in Section 5.3 of the SLOS068AB datasheet. Exceeding +85°C may cause parametric drift beyond guaranteed limits, particularly in input offset voltage and open-loop gain. Derating is recommended for continuous operation above 70°C in sealed enclosures.
Does LM358DGKR support rail-to-rail output?
No, LM358DGKR does not provide rail-to-rail output. Its output swings to within 100mV of V– and 1.35V of V+ under light load (50µA). At 5mA load, swing degrades to 1.5V below V+ and 0.75V above V–. For true rail-to-rail output, consider TI's TLV2372 or similar modern alternatives - LM358DGKR's strength lies in rail-to-rail *input*, not output.
Can LM358DGKR drive a 10kΩ load at 36V supply?
Yes, LM358DGKR can drive a 10kΩ load at 36V supply. Per Section 5.5, output voltage swing is specified with RL ≥ 10kΩ connected to VS/2, and output current capability remains within ±20mA sink/source limits. However, power dissipation must be checked: at 36V supply and 10kΩ load centered at 18V, worst-case dissipation is ~32mW per amplifier - well within VSSOP-8's 380mW absolute max (θJA = 181.4°C/W).
Is LM358DGKR pin-compatible with LM2904DGKR?
Yes, LM358DGKR and LM2904DGKR share identical VSSOP-8 (DGK) pinout and terminal functions per TI's Pin Configuration diagrams (Fig 4-1). Both use pins 1–8 for OUT1, IN1–, IN1+, V–, IN2+, IN2–, OUT2, V+. However, they differ in gain-bandwidth (1.2MHz vs 0.7MHz) and temperature grade (–40°C to +85°C vs –40°C to +125°C), so functional substitution requires validation of bandwidth and thermal margins.
What is the input bias current specification for LM358DGKR?
LM358DGKR exhibits input bias current of –10nA typical and –35nA maximum at 25°C, per Section 5.5 of the SLOS068AB datasheet. This value applies to both amplifiers and remains stable across the –40°C to +85°C operating range. The low bias current enables high-impedance sensor interfacing (e.g., pH electrodes or photodiode transimpedance stages) without significant offset error from leakage paths.
LM358DGKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- 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:
- 0.3V/µs
- Gain Bandwidth Product:
- 800 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 20 nA
- Voltage - Input Offset:
- 3 mV
- Current - Supply:
- 500µA (x2 Channels)
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
LM358DGKR FAQ
1.How can I place an order for LM358DGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for LM358DGKR 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 LM358DGKR reliable?
The price and inventory of LM358DGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM358DGKR is usually 5 days.
3.What payment methods are accepted for LM358DGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM358DGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM358DGKR?
LM358DGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM358DGKR 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 LM358DGKR?
For technical support, including LM358DGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM358DGKR requirements.
6.How does Aetrix verify that LM358DGKR is sourced from the original manufacturer or authorized distributors?
All LM358DGKR 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 LM358DGKR meets industry standards.
7.What is the process for return or replacement of LM358DGKR?
All LM358DGKR units undergo pre-shipment inspection (PSI). If there is an issue with LM358DGKR, 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 LM358DGKR part is unused and in its original packaging.
Return procedure for LM358DGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM358DGKR Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
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