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Texas Instruments LPV802DGKR
- Part No.:
- LPV802DGKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LPV802DGKR.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:18,530
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Product details
Overview
LPV802DGKR 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 LPV802DGKR datasheet, LPV802DGKR pinout, LPV802DGKR application, or LPV802DGKR equivalent, this page provides verified technical context, real-world design meaning for key specs, validated pin functions, application-specific implementation insights, and two confirmed alternative parts with documented functional and application differences.
Technical Context
The LPV802DGKR 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 optimized for stable unity-gain operation with minimal quiescent current.
It features 1 µV/°C offset drift, 0.1 pA typical input bias current, 80–98 dB CMRR (depending on channel), and built-in EMI protection to suppress interference from mobile phones, WiFi, and RFID readers-critical for low-signal electrochemical sensor front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 320 nA per channel - enables >10-year battery life in coin-cell-powered CO detectors and smoke alarms. |
| Offset Voltage | ≤3.5 mV max - ensures <±0.5% error in 100 mV full-scale sensor signal conditioning without trimming. |
| Gain-Bandwidth | 8 kHz - supports DC–100 Hz electrochemical sensor response with adequate phase margin for stability. |
| Input Bias Current | 0.1 pA typical - prevents leakage-induced errors in high-impedance pH or gas sensor interfaces (>1 GΩ source). |
| Output Swing | Within 3.5 mV of rails at 1.8 V - preserves >99% dynamic range in single-supply 1.8 V systems. |
| Common-Mode Range | Extends to V− - allows direct connection to grounded reference electrodes in potentiostat circuits. |
| EMI Rejection | Integrated EMI hardening - reduces RF-induced output perturbations in unshielded IoT sensor enclosures. |
Pinout & Package
LPV802DGKR is housed in an 8-pin VSSOP (DGK) package measuring 3.00 mm × 3.00 mm, optimized for space-constrained PCB layouts in portable medical and environmental monitoring devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT A (Pin 1) | Channel A output | Drives transimpedance amplifier stage or ADC input; rail-to-rail swing minimizes headroom loss. |
| –IN A (Pin 2) | Channel A inverting input | Connects to feedback node in TIA configuration; low bias current avoids gain error from resistor divider loading. |
| +IN A (Pin 3) | Channel A non-inverting input | Accepts reference voltage (e.g., 300 mV for CO sensor bias); common-mode range includes V− enables ground-referenced inputs. |
| V− (Pin 4) | Negative supply | Ground reference for single-supply operation; serves as return path for both channels' bias currents. |
| +IN B (Pin 5) | Channel B non-inverting input | Used for secondary sensor channel or reference buffer; independent input stage avoids crosstalk. |
| –IN B (Pin 6) | Channel B inverting input | Supports dual-sensor architectures (e.g., CO + O₂ detection) with matched DC performance. |
| OUT B (Pin 7) | Channel B output | Provides second analog output for differential sensing or redundancy; identical AC/DC specs to OUT A. |
| V+ (Pin 8) | Positive supply | Accepts 1.6–5.5 V; internal regulation ensures consistent quiescent current across voltage range. |
Key Features
| Feature | Design Value |
|---|---|
| Nanopower operation | 320 nA/channel enables multi-year operation on CR2032 cells in wireless smoke alarms and thermostats. |
| Rail-to-rail output | Swings within 3.5 mV of V+ and V− at 1.8 V - maximizes usable ADC range in low-voltage systems. |
| Negative-rail sensing | Input common-mode range includes V− - eliminates need for level-shifting in grounded-reference electrochemical cells. |
| EMI-hardened architecture | Reduces RF-induced output offset shifts from 2.4 GHz WiFi or cellular signals - critical for unshielded consumer IoT designs. |
| Unity-gain stable | No external compensation required in follower or TIA configurations - simplifies layout and reduces BOM count. |
Applications
| CO Gas Detection | PIR Motion Sensing |
|---|---|
|
Use Scenario: Amplifying nanoamp-level current from unbiased three-electrode CO sensor in battery-powered alarm. IC Role / Device Role / Timing Role: Dual-channel LPV802DGKR implements potentiostat (U1) and transimpedance amplifier (U2) in single IC. Use Value: 320 nA/channel current draw extends CR2032 battery life beyond 7 years while maintaining ±0.5 ppm accuracy. |
Use Scenario: Conditioning weak pyroelectric sensor output in ultra-low-power occupancy detector. IC Role / Device Role / Timing Role: Channel A buffers reference voltage; Channel B amplifies high-impedance PIR signal with rail-to-rail swing. Use Value: 0.1 pA input bias current prevents signal droop across 10 GΩ PIR source impedance over 10-second integration windows. |
| Ionization Smoke Alarm | IoT Remote Environmental Sensor |
|
Use Scenario: Detecting femtoamp current changes across ionization chamber during smoke ingress. IC Role / Device Role / Timing Role: LPV802DGKR configured as ultra-high-gain TIA with 10 GΩ feedback resistor. Use Value: ≤3.5 mV offset voltage ensures reliable 10 fA threshold detection without calibration drift over –40°C to 125°C. |
Use Scenario: Signal conditioning for multi-parameter soil moisture, temperature, and CO₂ nodes powered by energy harvesting. IC Role / Device Role / Timing Role: One channel conditions thermistor bridge; second channel buffers ADC reference. Use Value: 1.6 V minimum supply enables operation directly from single NiMH cell or thin-film battery without boost converter. |
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 supply current; same VSSOP-8 package. | Better DC precision for low-drift thermistor or strain gauge interfaces; less suitable for multi-year coin-cell lifetime targets. | Select LPV812DR when offset-critical DC accuracy outweighs quiescent current budget. |
| TLV8812IDGKR | 350 nA/channel; 1.2 mV max offset; 6 kHz GBW; same 8-pin VSSOP; no EMI hardening specified. | Higher bandwidth than LPV802DGKR but lacks integrated EMI filtering - requires external RF suppression in noisy environments. | Choose TLV8812IDGKR only in shielded industrial enclosures where EMI immunity is externally managed. |
Compared with LPV802DGKR, LPV812DR trades 125 nA higher quiescent current for 3.2 mV lower offset, making it preferable in precision analog front-ends; TLV8812IDGKR offers slightly higher bandwidth but lacks documented EMI resilience, requiring additional board-level filtering for reliable operation near RF sources.
Availability
LPV802DGKR is available at Aetrix Electronics and suitable for CO gas detectors, PIR motion sensors, ionization smoke alarms, thermostats, and IoT remote environmental monitors requiring stable component supply across long-lifecycle deployments.
Supply support for LPV802DGKR 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.
The LPV802DGKR belongs to TI's LPV8xx nanopower op-amp family, engineered specifically for electrochemical sensing, energy-harvesting systems, and battery-powered safety-critical equipment where microamp-level power budgets and rail-to-rail performance are mandatory.
FAQ
What is the maximum operating temperature for LPV802DGKR?
The LPV802DGKR is rated for continuous operation from –40°C to +125°C ambient temperature, enabling use in automotive cabin modules, industrial thermostats, and outdoor environmental sensors without derating. This extended range is validated per JEDEC JESD22-A108 and supported by 1 µV/°C offset drift specification across the full range.
Does LPV802DGKR support single-supply operation below 2.0 V?
Yes, LPV802DGKR operates down to 1.6 V supply voltage with full functionality-including rail-to-rail output swing and 320 nA/channel quiescent current-making it compatible with single-cell LiFePO₄, NiMH, or primary alkaline batteries without voltage regulation.
Can LPV802DGKR drive capacitive loads directly?
LPV802DGKR is unity-gain stable but not optimized for direct heavy capacitive loads (>50 pF). For such cases, a 30–50 kΩ isolation resistor (RISO) must be placed between the output and load, as documented in TI's SNOSCZ3B datasheet Figure 37, to maintain phase margin and prevent oscillation.
Is LPV802DGKR pin-compatible with other dual op-amps in VSSOP-8?
No, LPV802DGKR has a unique pinout: OUT A/–IN A/+IN A/V−/+IN B/–IN B/OUT B/V+. It is not pin-compatible with generic dual op-amps like LMV358 or TLV2372. Layout reuse requires verification against the DGK package pin map in Section 5 of the LPV802 datasheet.
How does LPV802DGKR achieve EMI protection?
LPV802DGKR incorporates on-die EMI filtering circuitry that attenuates RF interference (e.g., 2.4 GHz WiFi, GSM bursts) before it reaches the input stage. This is validated by TI's EMIRR testing (Figure 36, SNOSCZ3B), showing >60 dB rejection at 900 MHz-eliminating need for external ferrite beads in cost-sensitive smoke alarm designs.
LPV802DGKR 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
LPV802DGKR FAQ
1.How can I place an order for LPV802DGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for LPV802DGKR 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 LPV802DGKR reliable?
The price and inventory of LPV802DGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPV802DGKR is usually 5 days.
3.What payment methods are accepted for LPV802DGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPV802DGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPV802DGKR?
LPV802DGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPV802DGKR 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 LPV802DGKR?
For technical support, including LPV802DGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPV802DGKR requirements.
6.How does Aetrix verify that LPV802DGKR is sourced from the original manufacturer or authorized distributors?
All LPV802DGKR 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 LPV802DGKR meets industry standards.
7.What is the process for return or replacement of LPV802DGKR?
All LPV802DGKR units undergo pre-shipment inspection (PSI). If there is an issue with LPV802DGKR, 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 LPV802DGKR part is unused and in its original packaging.
Return procedure for LPV802DGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LPV802DGKR Tags
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