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Texas Instruments LPV802DGKT
- Part No.:
- LPV802DGKT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LPV802DGKT.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:31,697
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Product details
Overview
LPV802DGKT from Texas Instruments is a dual-channel nanopower operational amplifier designed for ultra-low-power sensing in battery-operated gas detectors, PIR motion sensors, and IoT remote nodes. It delivers 320 nA per channel supply current, 3.5 mV max offset voltage, 8 kHz unity-gain bandwidth, rail-to-rail output swing within 3.5 mV of rails at 1.8 V, and operates from 1.6 V to 5.5 V.
For engineers reviewing the LPV802DGKT datasheet, LPV802DGKT pinout, LPV802DGKT application, or LPV802DGKT equivalent, this page provides verified functional context, validated pin roles, confirmed EMI-hardened operation, real-world sensor interface examples, and direct alternative part comparisons - all grounded in TI's production-grade SNOSCZ3B datasheet (November 2016).
Technical Context
The LPV802DGKT integrates two independent CMOS-input op-amps with negative-rail sensing input stages (common-mode range extends to V−) and rail-to-rail output stages capable of 3.5 mV swing from both rails under 100 kΩ load. Its 8 kHz gain-bandwidth product is internally compensated for unity-gain stability.
It features 0.1 pA typical input bias current, 1 µV/°C offset drift, ≥80 dB CMRR over –40°C to 125°C, and built-in EMI protection optimized against mobile/WiFi/RFID interference - critical for electrochemical sensor front-ends where signal integrity at sub-nA levels is essential.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current / Channel | 320 nA typical - enables >10-year battery life in coin-cell-powered CO detectors and thermostats. |
| Offset Voltage (max) | ±3.5 mV - ensures <0.1% error in 300 mV reference-based potentiostat circuits for electrochemical gas sensors. |
| Unity-Gain Bandwidth | 8 kHz - supports stable DC-coupled amplification and low-frequency sensor signal conditioning up to ~1 kHz. |
| Input Bias Current | 0.1 pA typical - eliminates leakage-induced errors in high-impedance pH, ion-selective, or three-electrode gas sensor interfaces. |
| Rail-to-Rail Output Swing | Within 3.5 mV of V+ and V− at 1.8 V supply - preserves full dynamic range in single-supply 1.8–3.3 V microcontroller systems. |
| Operating Temperature | –40°C to +125°C - qualified for industrial thermostats, smoke alarms, and automotive cabin air quality monitors. |
| EMI Protection | Integrated circuit-level hardening - reduces susceptibility to RF interference from nearby Bluetooth/WiFi modules without external filtering. |
Pinout & Package
LPV802DGKT is packaged in an 8-pin VSSOP (DGK) with body dimensions 3.00 mm × 3.00 mm and 0.65 mm lead pitch. The package supports automated assembly and offers thermal resistance θJA = 184.2°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT A (Pin 1) | Channel A output | Drives transimpedance amplifier stage or comparator input; rail-to-rail swing enables full ADC utilization. |
| –IN A (Pin 2) | Channel A inverting input | Accepts feedback signal in TIA configuration; low bias current prevents gain error in high-RF designs. |
| +IN A (Pin 3) | Channel A non-inverting input | Connects to reference electrode (RE) in potentiostat; common-mode range to V− allows true single-supply biasing. |
| V− (Pin 4) | Negative power supply | Ground reference for single-supply operation; input common-mode extends to this rail. |
| +IN B (Pin 5) | Channel B non-inverting input | Used for secondary sensor channel or reference buffering; independent of Channel A signal path. |
| –IN B (Pin 6) | Channel B inverting input | Supports dual-sensor architectures (e.g., CO + O₂ detection) with matched nanopower performance. |
| OUT B (Pin 7) | Channel B output | Provides second analog output for differential sensing or redundancy; identical specs to OUT A. |
| V+ (Pin 8) | Positive power supply | Accepts 1.6–5.5 V; quiescent current remains stable across full range - critical for energy-harvesting systems. |
Key Features
| Feature | Design Value |
|---|---|
| Nanopower operation | 320 nA/channel enables multi-year operation on CR2032 cells in wireless smoke alarms and portable medical sensors. |
| Negative-rail sensing input | Common-mode range to V− eliminates need for level-shifting in single-supply electrochemical sensor front-ends. |
| Rail-to-rail output | 3.5 mV swing from rails at 1.8 V maximizes usable ADC code count in low-voltage IoT edge nodes. |
| EMI-hardened architecture | Reduces RF-induced output perturbations in environments with cellular/WiFi co-location - validated per TI test data. |
| Unity-gain stable | No external compensation required in follower or transimpedance configurations - simplifies layout in space-constrained modules. |
| Wide temperature range | Specified performance from –40°C to +125°C supports deployment in unregulated industrial enclosures and automotive cabins. |
Applications
| CO Gas Detector | PIR Motion Detector |
|---|---|
|
Use Scenario: Amplifies nanoamp-level current from unbiased three-terminal electrochemical CO sensor in battery-powered indoor air quality monitor. IC Role / Device Role / Timing Role: U1 serves as potentiostat amplifier maintaining RE–WE potential; U2 acts as transimpedance amplifier converting Isensor to VTIA. Use Value: 0.1 pA input bias current prevents measurement drift; 320 nA quiescent current extends CR2032 battery life beyond 5 years. |
Use Scenario: Conditions weak pyroelectric signal in ultra-low-power occupancy sensor with wake-on-motion capability. IC Role / Device Role / Timing Role: First-stage amplifier in high-impedance charge-amplifier topology; rejects 50/60 Hz mains noise via DC-coupled design. Use Value: Rail-to-rail output delivers full-scale signal to SAR ADC; EMI protection suppresses false triggers from nearby RF sources. |
| Ionization Smoke Alarm | IoT Remote Sensor Node |
|
Use Scenario: Amplifies femtoamp-level chamber current in battery-operated residential smoke detector with 10-year shelf life. IC Role / Device Role / Timing Role: Low-noise, low-drift front-end amplifier feeding window comparator for alarm threshold detection. Use Value: 1 µV/°C offset drift minimizes temperature-induced false alarms; 3.5 mV max offset ensures reliable 100 nA trip-point resolution. |
Use Scenario: Signal conditioning for ambient light, humidity, or temperature sensor in NB-IoT or LoRaWAN endpoint. IC Role / Device Role / Timing Role: Dual-channel amplifier enabling simultaneous analog sensing and internal reference buffering. Use Value: Dual architecture reduces component count; 1.6 V minimum supply supports direct connection to Li-SOCl₂ primary cells. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nanopower operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LPV812DR | Lower 300 µV max offset voltage; higher 425 nA/channel quiescent current; same VSSOP-8 package. | Better DC accuracy for precision thermistor or RTD interfaces; less suitable for multi-year battery life targets. | Select LPV812DR when offset-limited error budget dominates power budget - e.g., calibrated industrial sensor modules. |
| TLV8812DGKR | 250 nA/channel supply current; 1.2 mV max offset; 6 kHz GBW; same VSSOP-8 footprint but different pinout (non-drop-in). | Ultra-lowest power option for intermittent-sampling applications; requires PCB redesign due to pin reassignment. | Choose TLV8812DGKR only if system duty cycle allows aggressive sleep-mode optimization and layout revision is feasible. |
Compared with LPV802DGKT, LPV812DR trades 125 nA extra current for 3.2 mV lower offset - ideal for calibration-critical designs - while TLV8812DGKR achieves lower quiescent current but mandates board changes and sacrifices bandwidth and EMI robustness.
Availability
LPV802DGKT is available at Aetrix Electronics and suitable for CO gas detectors, PIR motion sensors, ionization smoke alarms, thermostats, and IoT remote sensors requiring stable component supply across long-lifecycle industrial and consumer programs.
Supply support for LPV802DGKT 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, embedded processing, and connectivity technologies with over 90 years of innovation in precision analog design.
The LPV80x family was engineered specifically for nanopower sensor signal conditioning in energy-constrained applications - emphasizing ultra-low IQ, rail-to-rail operation, EMI resilience, and extended temperature performance.
FAQ
What is the maximum operating supply voltage for LPV802DGKT?
The LPV802DGKT supports a supply voltage range of 1.6 V to 5.5 V. Absolute maximum rating is 6 V across V+ to V−, but continuous operation above 5.5 V is not recommended and may impact reliability or parametric performance per TI's SNOSCZ3B datasheet.
Does LPV802DGKT support rail-to-rail input operation?
No - LPV802DGKT features rail-to-rail *output* and *negative-rail sensing input*, meaning its common-mode input range extends down to V− but only up to (V+) – 0.9 V. This architecture avoids input stage inversion and maintains low offset within that range.
Can LPV802DGKT drive capacitive loads directly?
LPV802DGKT is unity-gain stable but sensitive to capacitive loading >50 pF. For loads exceeding this, TI recommends adding a 30–50 kΩ isolation resistor (RISO) between the output and capacitive node - as documented in Figure 37 of the LPV802DGKT datasheet.
Is LPV802DGKT pin-compatible with other dual op-amps in VSSOP-8?
No - LPV802DGKT uses a proprietary pinout optimized for dual-channel sensor interfaces (e.g., +IN B on Pin 5, –IN B on Pin 6). It is not pin-compatible with generic dual op-amps like LMV358 or TLV2372 in the same package.
What is the typical input bias current of LPV802DGKT at 25°C?
The typical input bias current of LPV802DGKT is 0.1 pA at 25°C and 1.8 V supply, as specified in Section 6.5 of the SNOSCZ3B datasheet. This ultra-low value is enabled by CMOS input stages and is critical for high-impedance electrochemical sensor interfacing.
LPV802DGKT 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:
- Rail-to-Rail
- Slew Rate:
- 0.0021V/µs
- Gain Bandwidth Product:
- 8 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.1 pA
- Voltage - Input Offset:
- 550 µV
- Current - Supply:
- 320nA (x2 Channels)
- Current - Output / Channel:
- 4.7 mA
- Voltage - Supply Span (Min):
- 1.6 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
LPV802DGKT FAQ
1.How can I place an order for LPV802DGKT through Aetrix?
Please submit a Request for Quotation (RFQ) for LPV802DGKT 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 LPV802DGKT reliable?
The price and inventory of LPV802DGKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPV802DGKT is usually 5 days.
3.What payment methods are accepted for LPV802DGKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPV802DGKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPV802DGKT?
LPV802DGKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPV802DGKT 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 LPV802DGKT?
For technical support, including LPV802DGKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPV802DGKT requirements.
6.How does Aetrix verify that LPV802DGKT is sourced from the original manufacturer or authorized distributors?
All LPV802DGKT 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 LPV802DGKT meets industry standards.
7.What is the process for return or replacement of LPV802DGKT?
All LPV802DGKT units undergo pre-shipment inspection (PSI). If there is an issue with LPV802DGKT, 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 LPV802DGKT part is unused and in its original packaging.
Return procedure for LPV802DGKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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