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Texas Instruments TLV8802DGKR
- Part No.:
- TLV8802DGKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TLV8802DGKR.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,138
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Product details
Overview
TLV8802DGKR from Texas Instruments is a dual-channel nanopower operational amplifier designed for ultra-low-power sensing in battery-critical systems. It delivers 320 nA per channel supply current, 4.5 mV max offset voltage, and rail-to-rail output swing within 3.5 mV of rails at 1.8 V - enabling high-precision signal conditioning in CO gas detectors, PIR motion sensors, and portable medical devices.
For engineers reviewing the TLV8802DGKR datasheet, TLV8802DGKR pinout, TLV8802DGKR application, or TLV8802DGKR equivalent, key selection considerations include its 6 kHz unity-gain bandwidth, –40°C to 125°C operating range, femtoamp-level input bias current (±100 fA), EMI-hardened architecture, and compatibility with high-impedance transimpedance amplifier (TIA) configurations using megaohm feedback networks.
Technical Context
The TLV8802DGKR implements a CMOS input stage optimized for ultra-low input bias current (±100 fA at 1.8 V), minimizing IBIAS/IOS errors in high-source-impedance electrochemical sensor interfaces. Its common-mode input range extends to the negative rail (V–), supporting single-supply operation down to 1.7 V.
Internally compensated for unity-gain stability, it achieves 6 kHz gain-bandwidth with 120 dB open-loop gain and features built-in EMI protection to suppress interference from mobile phones, WiFi, and RFID readers - critical for reliable operation in noisy IoT edge nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current / Channel | 320 nA typical - enables multi-year battery life in coin-cell-powered gas detectors and remote sensors |
| Input Offset Voltage | ±4.5 mV max - supports accurate DC-coupled amplification of µV–mV-level sensor outputs without trimming |
| Input Bias Current | ±100 fA at 1.8 V - preserves signal integrity in TIA circuits with >1 MΩ feedback resistors |
| Unity-Gain Bandwidth | 6 kHz - sufficient for low-frequency electrochemical and PIR sensor signals while maintaining nanopower operation |
| Rail-to-Rail Output | Swings to within 3.5 mV of V+ and V− at 1.8 V - maximizes dynamic range in 1.8–5.5 V supply systems |
| Common-Mode Range | Extends to V− - allows direct interfacing with grounded-referenced sensors and single-supply potentiostats |
| EMI Rejection | Integrated on-die filtering - reduces susceptibility to RF interference from 10 MHz to 1 GHz sources |
Pinout & Package
The TLV8802DGKR is housed in an 8-pin VSSOP (DGK) package measuring 3.00 mm × 3.00 mm, optimized for space-constrained PCB layouts in portable and wearable sensor modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT A | Channel A output | Amplified signal output for first op-amp channel; rail-to-rail capable with 3.5 mV headroom |
| –IN A | Channel A inverting input | Differential input node for feedback configuration; supports high-impedance sensor connections |
| +IN A | Channel A non-inverting input | Differential input node for reference or signal path; common-mode range includes V− |
| V− | Negative power supply | Ground or lowest system potential; serves as common-mode reference and output swing lower bound |
| +IN B | Channel B non-inverting input | Second amplifier input; electrically isolated from Channel A, enabling dual-sensor or differential readout |
| –IN B | Channel B inverting input | Second amplifier feedback node; identical electrical specs to Channel A inputs |
| OUT B | Channel B output | Independent output for second signal path; no crosstalk or shared loading with OUT A |
| V+ | Positive power supply | 1.7–5.5 V supply rail; powers both channels simultaneously with minimal quiescent draw |
Key Features
| Feature | Design Value |
|---|---|
| Nanopower operation | 320 nA/channel enables >10-year battery life in CR2032-powered smoke alarms and IoT endpoints |
| Femtoamp input bias | ±100 fA minimizes error in transimpedance amplifiers using RF ≥ 10 MΩ for electrochemical current-to-voltage conversion |
| Rail-to-rail output | 3.5 mV swing margin at 1.8 V preserves >99% of available dynamic range for ADC digitization |
| Negative-rail sensing | Input common-mode extends to V−, eliminating need for level-shifting in grounded-sensor applications |
| EMI-hardened design | On-chip RF filters suppress noise from 10 MHz–1 GHz sources, improving reliability in wireless environments |
Applications
| Gas Detection Systems | PIR Motion Sensing |
|---|---|
Use Scenario: Amplifying nanoamp-level current from three-terminal CO or O₂ electrochemical cells in battery-operated safety monitors. IC Role / Device Role / Timing Role: Dual-channel op-amp implementing potentiostat (U1) and transimpedance amplifier (U2) functions in a single IC. Use Value: Enables stable bias control of working/reference electrodes and precise I-to-V conversion with <1 µV/°C drift, meeting UL2034 sensitivity requirements. | Use Scenario: Conditioning weak, low-frequency analog signals from passive infrared (PIR) pyroelectric sensors in smart occupancy detectors. IC Role / Device Role / Timing Role: Low-noise, rail-to-rail amplifier for AC-coupled PIR output, driving ADC input with minimal power overhead. Use Value: Delivers 12 µVPP (0.1–10 Hz) input-referred noise and 6 kHz bandwidth - sufficient for human-motion detection while drawing <650 nA total. |
| Ionization Smoke Alarms | Portable Glucose Monitors |
Use Scenario: Amplifying picoamp-level ion currents generated by radioactive α-particle ionization chambers during smoke ingress. IC Role / Device Role / Timing Role: Ultra-low-input-current amplifier front-end for charge-integration circuitry detecting smoke-induced current reduction. Use Value: ±100 fA bias current prevents false triggers caused by leakage across high-value integration resistors (>1 GΩ) over temperature. | Use Scenario: Reading microamp-level amperometric current from glucose oxidase enzyme electrodes in handheld blood glucose meters. IC Role / Device Role / Timing Role: Precision, low-drift amplifier in constant-potential amperometric measurement cell with integrated reference electrode. Use Value: 1 µV/°C offset drift and 4.5 mV max VOS ensure <2% glucose concentration error across –20°C to 50°C ambient conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nanopower operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LPV802DRMR | 3.5 mV max offset voltage (vs. 4.5 mV); 320 nA/ch supply current; same VSSOP-8 package | Better DC precision for low-drift instrumentation; identical power and thermal profile | Select LPV802DRMR when offset-critical TIA designs require tighter initial accuracy without calibration |
| TLV8542IDGKR | Higher 500 nA/ch supply current; 3.5 mV max offset; 88 kHz GBW; same DGK package | Supports higher-bandwidth sensor signals (e.g., ultrasonic pulse echo) but increases battery load | Choose TLV8542IDGKR only when >10 kHz signal content justifies 1.6× higher quiescent current |
Compared with LPV802DRMR, TLV8802DGKR trades 1 mV higher offset for superior EMI immunity and lower input bias current - critical for unshielded gas sensor PCBs. Versus TLV8542IDGKR, TLV8802DGKR reduces supply current by 36% at the cost of bandwidth, making it optimal for sub-10 Hz electrochemical and thermal sensing.
Availability
TLV8802DGKR is available at Aetrix Electronics and suitable for gas detectors, motion sensors, and portable medical equipment requiring stable component supply across extended production lifecycles.
Supply support for TLV8802DGKR 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 TLV8802DGKR belongs to TI's nanopower op-amp product line, engineered specifically for energy-constrained sensing applications including electrochemical gas analysis, battery-powered security systems, and wearable health monitors.
FAQ
What is the maximum operating temperature range for the TLV8802DGKR?
The TLV8802DGKR is specified to operate from –40°C to +125°C. This extended industrial temperature range ensures reliable performance in harsh environments such as enclosed smoke alarm housings, outdoor PIR motion detectors, and automotive cabin air quality sensors - all while maintaining 320 nA/channel quiescent current and 4.5 mV max offset voltage across the full range.
Does the TLV8802DGKR support rail-to-rail input operation?
No, the TLV8802DGKR does not support rail-to-rail input. Its input common-mode voltage range extends from V− to (V+) – 0.9 V. However, the ability to sense down to the negative rail makes it ideal for single-supply configurations where the sensor output is referenced to ground - a key advantage over many competing nanopower op-amps that require input biasing above V−.
Can the TLV8802DGKR drive capacitive loads directly?
The TLV8802DGKR is unity-gain stable but becomes sensitive to capacitive loads >50 pF. Direct connection to heavy capacitive loads (e.g., long PCB traces or ADC input capacitance) may cause peaking or oscillation. TI recommends adding a 30–50 kΩ isolation resistor (RISO) between the TLV8802DGKR output and the capacitive load to restore phase margin without compromising DC accuracy.
Is the TLV8802DGKR pin-compatible with other dual op-amps in VSSOP-8 packages?
The TLV8802DGKR uses a standard VSSOP-8 pinout (DGK) matching TI's LPV802, TLV8542, and OPA2313 families. Pin 1 is OUT A, Pin 2 is –IN A, Pin 3 is +IN A, Pin 4 is V−, Pin 5 is +IN B, Pin 6 is –IN B, Pin 7 is OUT B, and Pin 8 is V+. This allows drop-in substitution in existing layouts when nanopower operation is prioritized over bandwidth or offset.
How does the EMI protection in TLV8802DGKR improve system robustness?
The TLV8802DGKR integrates on-die EMI filtering that attenuates RF interference from 10 MHz to 1 GHz - covering cellular, WiFi, Bluetooth, and RFID frequencies. In gas detector PCBs placed near wireless gateways, this reduces output perturbation by >20 dB compared to unprotected op-amps, preventing false alarms triggered by ambient RF fields without requiring external shielding or ferrite beads.
TLV8802DGKR 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:
- 0.0015V/µs
- Gain Bandwidth Product:
- 6 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):
- 1.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
TLV8802DGKR FAQ
1.How can I place an order for TLV8802DGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV8802DGKR 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 TLV8802DGKR reliable?
The price and inventory of TLV8802DGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV8802DGKR is usually 5 days.
3.What payment methods are accepted for TLV8802DGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV8802DGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV8802DGKR?
TLV8802DGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV8802DGKR 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 TLV8802DGKR?
For technical support, including TLV8802DGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV8802DGKR requirements.
6.How does Aetrix verify that TLV8802DGKR is sourced from the original manufacturer or authorized distributors?
All TLV8802DGKR 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 TLV8802DGKR meets industry standards.
7.What is the process for return or replacement of TLV8802DGKR?
All TLV8802DGKR units undergo pre-shipment inspection (PSI). If there is an issue with TLV8802DGKR, 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 TLV8802DGKR part is unused and in its original packaging.
Return procedure for TLV8802DGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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