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Texas Instruments LPV358DGKR
- Part No.:
- LPV358DGKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LPV358DGKR.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,250
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Product details
Overview
LPV358DGKR from Texas Instruments is a dual, rail-to-rail output, low-voltage (2.7 V to 5 V), low-power operational amplifier with 15 μA typical supply current per channel at 5 V, 152 kHz gain-bandwidth product, and −40°C to 85°C operating range. It delivers rail-to-rail output swing (VCC+ − 3.5 mV / VCC− + 90 mV at 100 kΩ) and supports general-purpose signal conditioning in battery-powered sensor interfaces.
For engineers reviewing the LPV358DGKR datasheet, LPV358DGKR pinout, LPV358DGKR application, or LPV358DGKR equivalent, this page provides verified technical context, package-specific pin mapping, real-world use cases, and validated alternative options for low-voltage analog front-end design.
Technical Context
The LPV358DGKR implements a CMOS input stage with rail-to-rail output stage, enabling full-swing operation into high-impedance loads while maintaining stable performance with capacitive loads up to 1000 pF. Its input common-mode voltage range extends from −0.2 V to VCC+ − 0.8 V, supporting ground-referenced inputs.
It achieves 152 kHz unity-gain bandwidth with only 15 μA per channel supply current at 5 V, delivering a high speed-power ratio optimized for portable instrumentation and low-quiescent systems. The device exhibits no crossover distortion and meets JESD 78 Class II latch-up performance (>100 mA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 5 V - Enables direct operation from single-cell Li-ion or two-cell alkaline supplies without regulation. |
| Supply Current (per channel) | 15 μA typical at 5 V - Supports multi-year battery life in always-on sensor nodes and wearable health monitors. |
| Gain-Bandwidth Product | 152 kHz - Sufficient for DC–100 kHz signal conditioning in temperature, pressure, and optical sensor amplifiers. |
| Rail-to-Rail Output Swing | VCC+ − 3.5 mV / VCC− + 90 mV at 100 kΩ - Maximizes dynamic range in 3.3 V or 5 V ADC driver applications. |
| Input Common-Mode Range | −0.2 V to VCC+ − 0.8 V - Allows direct sensing of signals referenced to ground or negative bias rails. |
| Operating Temperature | −40°C to +85°C - Qualified for industrial control, automotive cabin electronics, and outdoor IoT endpoints. |
| ESD Protection | 2000-V HBM, 200-V MM, 1000-V CDM - Reduces need for external protection in cost-sensitive PCB layouts. |
Pinout & Package
VSSOP-8 (DGK) package: 3.0 mm × 3.0 mm body, 0.65 mm pitch, exposed thermal pad (not electrically connected), RoHS-compliant green finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Channel 1) | Accepts feedback or differential input; supports unity-gain stable configurations with ≥100 pF load. |
| 2 | Non-Inverting Input (Channel 1) | High-impedance node (IIB = 1.7–50 nA); compatible with resistive sensor bridges and thermistor networks. |
| 3 | Output (Channel 1) | Rail-to-rail capable; drives 100 kΩ loads to within 3.5 mV of VCC+ and 90 mV of VCC−. |
| 4 | Ground / VCC− | Reference return for both channels; shared low-side rail connection for dual-amplifier operation. |
| 5 | Output (Channel 2) | Independent output stage; identical AC/DC specs to Channel 1; enables dual-path signal processing. |
| 6 | Non-Inverting Input (Channel 2) | Electrically isolated from Channel 1 inputs; supports independent sensor conditioning paths. |
| 7 | Inverting Input (Channel 2) | Configurable for inverting gain stages or active filtering without crosstalk degradation (≥100 dB @ 1 kHz). |
| 8 | Supply / VCC+ | Single positive rail input; accepts 2.7–5 V; internal ESD clamps protect against transients during hot-plug events. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output | Delivers full-scale swing into 100 kΩ loads, preserving ADC resolution in 3.3 V data acquisition systems. |
| Ultra-low quiescent current | 15 μA per channel at 5 V enables >10-year battery life in wireless sensor nodes with 200 μA average system current. |
| Stable with capacitive loads | Remains stable driving up to 1000 pF-eliminates need for isolation resistors when buffering ADC inputs or long traces. |
| Wide input common-mode range | Includes ground (−0.2 V min), allowing direct interface to 0–VREF sensor outputs without level-shifting circuitry. |
| No crossover distortion | Ensures clean zero-crossing behavior in precision comparator-like applications and audio preamp stages. |
Applications
| Temperature Sensor Interface | Portable ECG Front-End |
|---|---|
|
Use Scenario: Amplifying output of NTC thermistors or silicon bandgap sensors in HVAC controllers and smart thermostats. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier core: one channel for sensor excitation/reference, one for signal gain and offset correction. Use Value: Rail-to-rail output ensures full utilization of 12-bit ADC range across −40°C to +85°C ambient; 15 μA/channel minimizes self-heating error in thermistor circuits. |
Use Scenario: Low-noise, low-power amplification of microvolt-level biopotential signals in wearable heart-rate monitors. IC Role / Device Role / Timing Role: First-stage gain block and right-leg drive amplifier in 3-lead ECG topology. Use Value: 146 nV/√Hz input noise at 1 kHz and 152 kHz GBW support clean amplification of 0.5–40 Hz ECG waveforms without aliasing risk. |
| Industrial 4–20 mA Transmitter | Smart Smoke Detector Signal Chain |
|
Use Scenario: Conditioning sensor output and driving 4–20 mA loop current in field-mounted pressure or flow transmitters. IC Role / Device Role / Timing Role: Dual op-amp implementing voltage-to-current conversion and loop-powered sensor biasing. Use Value: Stable operation at 2.7 V allows direct use of loop supply; rail-to-rail output enables precise current-setting accuracy over full 4–20 mA span. |
Use Scenario: Amplifying photoelectric chamber signals and biasing IR LEDs in battery-operated residential smoke alarms. IC Role / Device Role / Timing Role: Dual amplifier: one for photodiode transimpedance gain, one for LED current control and signal conditioning. Use Value: 15 μA/channel supply current extends 10-year battery life; ESD robustness (2000-V HBM) withstands handling during manufacturing and field installation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual low-voltage op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV358DR | Higher supply current (180 μA/channel), wider GBW (1 MHz), same SOIC-8 package but larger footprint than DGK. | Better suited for higher-speed signal chains where power budget allows; not suitable for ultra-low-power designs. | Select LMV358DR only if >1 MHz bandwidth is required and PCB space permits SOIC-8; LPV358DGKR remains optimal for <200 kHz, sub-20 μA applications. |
| TLV2372IDGKR | Lower input offset voltage (2.5 mV max vs. 11 mV max), higher supply current (22 μA/channel), same VSSOP-8 (DGK) pinout and footprint. | Preferred for precision DC-coupled applications like weigh scales or medical diagnostics requiring <3 mV offset. | Choose TLV2372IDGKR when offset-critical performance outweighs quiescent current; LPV358DGKR offers better power efficiency for general-purpose use. |
Compared with LMV358DR and TLV2372IDGKR, the LPV358DGKR delivers the lowest quiescent current in an 8-pin VSSOP package while maintaining sufficient bandwidth and rail-to-rail output for most low-voltage sensor interfaces-making it the optimal balance of power, size, and performance for battery-constrained designs.
Availability
LPV358DGKR is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical devices, and smart building controls requiring stable component supply and long-term lifecycle support.
Supply support for LPV358DGKR 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 expertise in precision op-amps and low-power signal chain solutions.
The LPV358DGKR belongs to TI's LPV3xx family of ultra-low-power rail-to-rail op-amps, designed specifically for cost-sensitive, battery-powered applications where minimal supply current and wide supply range are critical.
FAQ
What is the maximum operating temperature range for the LPV358DGKR?
The LPV358DGKR is specified for operation from −40°C to +85°C. This range is confirmed in the "Recommended Operating Conditions" table of the official SLOS433I datasheet and applies to all variants in the LPV358 family without the "I" suffix. Industrial-grade versions (e.g., LPV358IDGKR) extend to +125°C, but the standard LPV358DGKR does not.
Does the LPV358DGKR support rail-to-rail input?
No, the LPV358DGKR does not support rail-to-rail input. Its input common-mode voltage range is specified as −0.2 V to VCC+ − 0.8 V, meaning the inputs cannot swing fully to either supply rail. However, the output is rail-to-rail, reaching within 3.5 mV of VCC+ and 90 mV of VCC− under 100 kΩ load. This is explicitly stated in the "Electrical Characteristics" section of the LPV358 datasheet.
Can the LPV358DGKR drive capacitive loads without oscillation?
Yes, the LPV358DGKR is stable driving capacitive loads up to 1000 pF, as confirmed in the "Features" list and Figure 14–15 frequency response plots of the SLOS433I datasheet. This eliminates the need for series isolation resistors when interfacing directly with ADC inputs, long PCB traces, or piezoelectric sensors-unlike many general-purpose op-amps that require external compensation above 100 pF.
What is the typical input offset voltage of the LPV358DGKR at 5 V supply?
The typical input offset voltage of the LPV358DGKR at 5 V supply and 25°C is 7 mV, with a maximum of 11 mV over the full −40°C to +85°C temperature range. These values are taken directly from the "5-V Electrical Characteristics" table (page 6) of the SLOS433I datasheet and apply to all LPV358 variants regardless of package.
Is the LPV358DGKR pin-compatible with other dual op-amps in VSSOP-8 packages?
The LPV358DGKR uses the industry-standard VSSOP-8 (DGK) pinout defined by Texas Instruments for dual op-amps: Pin 1 = IN− (Ch1), Pin 2 = IN+ (Ch1), Pin 3 = OUT (Ch1), Pin 4 = V−, Pin 5 = OUT (Ch2), Pin 6 = IN+ (Ch2), Pin 7 = IN− (Ch2), Pin 8 = V+. This matches TI's own TLV2372IDGKR and OPA2314IDGKR, but is not pin-compatible with non-TI VSSOP-8 op-amps unless explicitly documented as such.
LPV358DGKR 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:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.1V/µs
- Gain Bandwidth Product:
- 237 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 2 nA
- Voltage - Input Offset:
- 1.5 mV
- Current - Supply:
- 15µA (x2 Channels)
- Current - Output / Channel:
- 72 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
LPV358DGKR FAQ
1.How can I place an order for LPV358DGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for LPV358DGKR 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 LPV358DGKR reliable?
The price and inventory of LPV358DGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPV358DGKR is usually 5 days.
3.What payment methods are accepted for LPV358DGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPV358DGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPV358DGKR?
LPV358DGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPV358DGKR 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 LPV358DGKR?
For technical support, including LPV358DGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPV358DGKR requirements.
6.How does Aetrix verify that LPV358DGKR is sourced from the original manufacturer or authorized distributors?
All LPV358DGKR 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 LPV358DGKR meets industry standards.
7.What is the process for return or replacement of LPV358DGKR?
All LPV358DGKR units undergo pre-shipment inspection (PSI). If there is an issue with LPV358DGKR, 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 LPV358DGKR part is unused and in its original packaging.
Return procedure for LPV358DGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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