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Texas Instruments LM258DGKR
- Part No.:
- LM258DGKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LM258DGKR.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:21,464
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Product details
Overview
LM258DGKR from Texas Instruments is a dual operational amplifier optimized for industrial and consumer applications operating from 3 V to 32 V supply, featuring 5 mV maximum input offset voltage at 25°C, 0.7 MHz unity-gain bandwidth, and rail-to-rail output swing capability near the negative rail-enabling direct ground-sensing in sensor signal conditioning circuits.
For engineers reviewing the LM258DGKR datasheet, LM258DGKR pinout, LM258DGKR application, or LM258DGKR equivalent, this page delivers verified specifications, package-confirmed pin functions, real-world use cases in power supplies and motor control, and two validated alternative parts with documented parameter and temperature-range differences.
Technical Context
The LM258DGKR implements a standard voltage-feedback op amp architecture with internally compensated dominant-pole response, supporting stable unity-gain operation without external compensation. Its input stage uses PNP transistor pairs enabling common-mode input range extending to the negative supply rail.
It operates across –25°C to +85°C ambient temperature, supports single-supply configurations down to 3 V, and delivers 350 µA typical quiescent current per amplifier-balancing low-power operation with sufficient drive capability (±20 mA output) for interfacing with ADCs, comparators, and analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 32 V - enables compatibility with 5 V, 12 V, and 24 V industrial rails without level-shifting. |
| Input Offset Voltage (max) | 5 mV at 25°C - ensures ≤5 mV error in precision DC-coupled gain stages (e.g., strain gauge amplifiers). |
| Unity-Gain Bandwidth | 0.7 MHz - supports stable closed-loop operation up to ~100 kHz with moderate gain (e.g., G = 10). |
| Slew Rate | 0.3 V/µs - limits large-signal settling time; suitable for <10 kHz signal conditioning, not high-speed DAC buffering. |
| Common-Mode Input Range | Includes V– (ground) - allows direct sensing of signals referenced to system ground (e.g., current shunt monitors). |
| Output Swing (V– side) | 5–20 mV above V– at 10 kΩ load - enables true single-supply operation with minimal headroom loss. |
| Quiescent Current / Amp | 350 µA typical - supports battery-powered or energy-conscious designs where total IQ < 1 mA is critical. |
Pinout & Package
VSSOP-8 (DGK) package: 3.00 mm × 3.00 mm body, 0.5 mm pitch, exposed pad optional; thermally enhanced for compact PCB layouts in space-constrained industrial modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Amplifier 1 output - drives loads up to ±20 mA; requires local bypass capacitor for stability. |
| 2 | IN1– | Inverting input - high-impedance node; sensitive to PCB leakage and EMI coupling. |
| 3 | IN1+ | Non-inverting input - accepts signals down to V–; used for ground-referenced sensor inputs. |
| 4 | V– | Negative supply or ground - must be low-impedance; shared return path for both amplifiers. |
| 5 | IN2+ | Non-inverting input (amp 2) - independent channel; supports dual-sensor or differential pair usage. |
| 6 | IN2– | Inverting input (amp 2) - matched to IN1–; enables identical feedback networks for both channels. |
| 7 | OUT2 | Amplifier 2 output - electrically isolated from OUT1; usable as independent buffer or comparator driver. |
| 8 | V+ | Positive supply - decoupling capacitor (0.1 µF ceramic) required within 5 mm of pin for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Ground-sensing input stage | Common-mode range includes V–, eliminating need for level-shifting in shunt-based current monitoring. |
| Rail-to-rail output (negative side) | Output swings within 5–20 mV of V– under 10 kΩ load, enabling full dynamic range in single-supply systems. |
| Low quiescent current | 350 µA per amplifier supports always-on sensor nodes and battery-backed subsystems. |
| Unity-gain stable | No external compensation required - simplifies design of buffers, active filters, and gain stages. |
| Industrial temperature range | Specified from –25°C to +85°C - qualified for use in HVAC controllers, PLC I/O modules, and motor drives. |
Applications
| Current Sensing | Power Supply Feedback |
|---|---|
Use Scenario: Amplifying mV-level voltage drop across a 10 mΩ shunt resistor in a 24 V DC motor drive. IC Role / Device Role / Timing Role: Dual-channel non-inverting amplifier with gain = 100, using one op amp for sensing and second for filtering. Use Value: 5 mV max VOS ensures ≤0.5% full-scale error at 500 mA sense current; rail-to-rail output preserves resolution near 0 V. |
Use Scenario: Error amplifier in the feedback loop of an isolated 12 V/3 A flyback converter. IC Role / Device Role / Timing Role: Compensator implementing Type II transfer function to stabilize voltage regulation. Use Value: 0.7 MHz GBW supports crossover frequencies up to 50 kHz; low IQ minimizes standby loss in no-load condition. |
| Motor Control Interface | Industrial Sensor Conditioning |
Use Scenario: Converting PWM signals to analog voltage for speed reference in a brushed DC motor controller. IC Role / Device Role / Timing Role: Low-pass filter and buffer driving a 10 kΩ potentiometer wiper or ADC input. Use Value: Unity-gain stability eliminates oscillation risk; 0.3 V/µs slew rate adequately settles 20 kHz PWM harmonics. |
Use Scenario: Amplifying and offsetting output of a 4–20 mA transmitter loop in a factory temperature monitor. IC Role / Device Role / Timing Role: Transimpedance amplifier + level shifter converting current to 0–5 V range. Use Value: Input bias current ≤250 nA prevents loading of high-Z current sources; V–-referenced input simplifies loop grounding. |
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 | Same SOIC-8 package; wider temp range (0°C to 70°C vs –25°C to 85°C); 7 mV max VOS vs 5 mV. | Not rated for extended industrial environments; higher offset reduces accuracy in precision current sensing. | Select LM358DR only for cost-sensitive commercial-grade designs where ambient stays within 0–70°C. |
| LM2904DR | SOIC-8; automotive-grade (–40°C to 125°C); same 7 mV max VOS; 350 µA IQ. | Validated for harsh environments but lacks LM258DGKR's tighter offset spec for measurement-critical roles. | Choose LM2904DR when thermal robustness outweighs offset performance-e.g., engine bay sensors or outdoor inverters. |
Compared with LM358DR and LM2904DR, the LM258DGKR provides superior input offset voltage (5 mV vs 7 mV) and extended low-temperature operation (–25°C), making it optimal for industrial sensor interfaces where accuracy and cold-start reliability are prioritized over automotive qualification or commercial cost targets.
Availability
LM258DGKR is available at Aetrix Electronics and suitable for industrial motor control, power supply feedback loops, and sensor signal conditioning requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for LM258DGKR 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 decades of heritage in precision op amps and industrial-grade signal chain solutions.
The LM258 series belongs to TI's legacy dual op amp product line designed specifically for cost-sensitive, general-purpose analog signal conditioning in industrial, consumer, and computing equipment where reliability across –25°C to +85°C is essential.
FAQ
What is the maximum operating temperature for the LM258DGKR?
The LM258DGKR is specified for operation from –25°C to +85°C ambient temperature. This extended industrial range exceeds the 0°C to 70°C rating of the standard LM358 and supports deployment in enclosed control cabinets or unventilated enclosures where internal temperatures rise significantly above room ambient. The LM258DGKR maintains its 5 mV input offset voltage and 0.7 MHz bandwidth across this full range.
Does the LM258DGKR support rail-to-rail input or output?
The LM258DGKR supports rail-to-rail output swing on the negative side (within 5–20 mV of V–), but its input common-mode range extends only to V–, not to V+. It does not support true rail-to-rail input operation. For applications requiring full V– to V+ input range, consider newer alternatives like the TLV2372 or OPA2316, which are explicitly rail-to-rail input/output devices.
Can the LM258DGKR drive capacitive loads directly?
The LM258DGKR is characterized to drive up to 100 pF capacitive loads without instability, as confirmed in the datasheet's Electrical Characteristics table. Driving larger loads (e.g., >200 pF cables or ADC input capacitance) requires isolation via a series resistor (≥100 Ω) or use of a dedicated buffer stage to prevent peaking or oscillation. Always verify phase margin with actual layout parasitics.
How does the LM258DGKR differ from the LM358B in terms of key specs?
The LM258DGKR differs from the LM358B by offering a –25°C to +85°C temperature range (vs –40°C to +85°C for LM358B), 5 mV max input offset (vs 3 mV for LM358B), and 0.7 MHz GBW (vs 1.2 MHz for LM358B). The LM358B adds integrated EMI filtering and lower quiescent current (300 µA vs 350 µA), but the LM258DGKR remains preferred where legacy compatibility and proven field reliability in established industrial designs are paramount.
Is the DGK package of the LM258DGKR RoHS-compliant and lead-free?
Yes, the LM258DGKR in the VSSOP-8 (DGK) package is RoHS-compliant and lead-free, meeting JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) requirements. Texas Instruments confirms Pb-free terminations and halogen-free molding compound for this part number, with full compliance documentation available in the official TI product folder and material declarations.
LM258DGKR 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:
- 700 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):
- 32 V
- Operating Temperature:
- -25°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
LM258DGKR FAQ
1.How can I place an order for LM258DGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for LM258DGKR 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 LM258DGKR reliable?
The price and inventory of LM258DGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM258DGKR is usually 5 days.
3.What payment methods are accepted for LM258DGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM258DGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM258DGKR?
LM258DGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM258DGKR 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 LM258DGKR?
For technical support, including LM258DGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM258DGKR requirements.
6.How does Aetrix verify that LM258DGKR is sourced from the original manufacturer or authorized distributors?
All LM258DGKR 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 LM258DGKR meets industry standards.
7.What is the process for return or replacement of LM258DGKR?
All LM258DGKR units undergo pre-shipment inspection (PSI). If there is an issue with LM258DGKR, 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 LM258DGKR part is unused and in its original packaging.
Return procedure for LM258DGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM258DGKR 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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