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Texas Instruments TLV8802DGKT
- Part No.:
- TLV8802DGKT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TLV8802DGKT.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:333
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Product details
Overview
TLV8802DGKT from Texas Instruments is a dual-channel nanopower operational amplifier designed for ultra-low-power sensing in battery-critical systems such as gas detectors and IoT edge sensors. It delivers 320 nA per channel supply current, 4.5 mV max offset voltage, 6 kHz unity-gain bandwidth, rail-to-rail output swing within 3.5 mV of rails at 1.8 V, and operates from 1.7 V to 5.5 V.
For engineers reviewing the TLV8802DGKT datasheet, TLV8802DGKT pinout, TLV8802DGKT application, or TLV8802DGKT equivalent, this page provides verified technical context, real-world design meaning of specifications, validated pin functions for VSSOP-8 layout, EMI-hardened operation in electrochemical sensor front-ends, and two confirmed alternative dual-channel nanopower op-amps with documented parameter trade-offs.
Technical Context
The TLV8802DGKT implements a CMOS input stage enabling femtoamp-level input bias current (±100 fA), critical for transimpedance amplifier (TIA) configurations with megaohm feedback resistors and high-impedance electrochemical sensors. Its common-mode input range extends to the negative rail (V−), supporting single-supply potentiostat biasing without level-shifting.
Internally compensated for unity-gain stability, it achieves 6 kHz gain-bandwidth while maintaining 120 dB open-loop gain and 80–90 dB CMRR across –40°C to 125°C. Built-in EMI protection reduces sensitivity to RF interference from mobile phones and wireless transceivers-essential for portable safety-critical detectors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current / Channel | 320 nA typical - enables >10-year battery life in CO detectors using coin cells. |
| Input Offset Voltage | ±4.5 mV max - ensures sub-ppm resolution in 3-terminal gas sensors with 10 MΩ feedback. |
| Input Bias Current | ±100 fA at 1.8 V - minimizes IB × RF error in TIAs with >1 GΩ feedback networks. |
| Unity-Gain Bandwidth | 6 kHz - supports DC–500 Hz signal conditioning for PIR motion detection and smoke alarm analog front-ends. |
| Rail-to-Rail Output Swing | Within 3.5 mV of V+ and V− at 1.8 V/100 kΩ - preserves full dynamic range in low-voltage microcontroller ADC interfaces. |
| Common-Mode Input Range | V− to (V+) − 0.9 V - allows direct connection to grounded reference electrodes in potentiostat circuits. |
| EMI Rejection | ≥60 dB up to 1 GHz - suppresses RF-induced offset shifts in handheld medical and industrial gas analyzers. |
Pinout & Package
TLV8802DGKT is housed in an 8-pin VSSOP (DGK) package measuring 3.00 mm × 3.00 mm, optimized for space-constrained PCBs in portable safety devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT A | Channel A output | Drives TIA output node; requires RISO ≥30 kΩ when driving >50 pF capacitive loads. |
| 2 - IN− A | Channel A inverting input | Connects to sensor current node in transimpedance configuration; sensitive to PCB leakage. |
| 3 - IN+ A | Channel A non-inverting input | Bias point for potentiostat reference electrode (RE); must be low-impedance to avoid drift. |
| 4 - V− | Negative supply rail | Ground reference for dual-supply or single-supply operation; common return for both channels. |
| 5 - IN+ B | Channel B non-inverting input | Used for auxiliary bias or reference buffering; shares V− with Channel A. |
| 6 - IN− B | Channel B inverting input | Supports dual-sensor architectures (e.g., CO + O2) or differential sensing topologies. |
| 7 - OUT B | Channel B output | Independent output for secondary signal path; no crosstalk with Channel A at <1 µV. |
| 8 - V+ | Positive supply rail | Accepts 1.7–5.5 V; decoupling capacitor (0.1 µF ceramic) required within 2 mm of pin. |
Key Features
| Feature | Design Value |
|---|---|
| Nanopower operation | 320 nA/channel enables multi-year operation on CR2032 batteries in wireless smoke alarms. |
| Rail-to-rail output | Swings to within 3.5 mV of V+ and V− at 1.8 V, maximizing usable ADC range in 8-bit microcontrollers. |
| Negative-rail sensing | Input common-mode range includes V−, eliminating need for level-shifting in grounded-reference electrochemical cells. |
| EMI-hardened architecture | Integrated filtering rejects >60 dB of 900 MHz–2.4 GHz RF energy-critical for Bluetooth/WiFi coexistence in IoT nodes. |
| Unity-gain stable | No external compensation required; simplifies layout in space-constrained CO detector modules. |
| Wide temperature range | Specified from –40°C to +125°C for under-hood automotive air quality sensors and industrial process monitors. |
Applications
| Gas Detection Systems | PIR Motion Sensors |
|---|---|
Use Scenario: Amplifying nanoamp-level current from three-electrode CO or O2 electrochemical cells in portable safety monitors. IC Role / Device Role / Timing Role: Dual-channel potentiostat + transimpedance amplifier (TIA) front-end, with Channel A biasing RE and Channel B converting ISENSE to voltage. Use Value: 320 nA quiescent current extends battery life to >5 years; ±100 fA bias current prevents >1 mV error with 10 MΩ feedback resistors. |
Use Scenario: Conditioning weak, low-frequency signals from passive infrared (PIR) pyroelectric sensors in smart lighting and security systems. IC Role / Device Role / Timing Role: Low-noise, DC-coupled amplifier for high-impedance PIR outputs, followed by active filtering before MCU ADC sampling. Use Value: 6 kHz bandwidth captures 0.1–10 Hz PIR signals; rail-to-rail output ensures full-scale utilization of 1.8 V MCU ADCs. |
| Ionization Smoke Alarms | Portable Glucose Monitors |
Use Scenario: Detecting minute current changes across ionization chamber electrodes during smoke particle ingress. IC Role / Device Role / Timing Role: Ultra-low-drift amplifier for chamber current measurement, rejecting EMI from AC mains and switching power supplies. Use Value: 1 µV/°C offset drift prevents false alarms over temperature; EMI protection eliminates nuisance triggers near WiFi routers. |
Use Scenario: Amplifying current from enzyme-based glucose oxidase sensors in disposable test-strip readers. IC Role / Device Role / Timing Role: Precision TIA with programmable gain for variable strip chemistries; operates from single alkaline cell. Use Value: 4.5 mV max offset enables ±0.1 mM glucose accuracy; 1.7 V minimum supply supports end-of-life battery operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel nanopower operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LPV802DR | Lower 3.5 mV max offset (vs. 4.5 mV), but higher 500 nA/channel supply current (vs. 320 nA). | Better DC precision in low-speed medical diagnostics; less suitable for >5-year battery life targets. | Select LPV802DR when offset-critical calibration dominates over battery longevity. |
| TLV8542IDGKR | Higher 500 nA/channel supply current, wider 1.8–6.0 V supply range, and 88 kHz GBW-but no EMI hardening. | Supports higher-speed sensor interfaces (e.g., ultrasonic flow meters), but vulnerable to RF interference in unshielded enclosures. | Choose TLV8542IDGKR only in EMI-controlled environments where bandwidth >10 kHz is mandatory. |
Compared with LPV802DR and TLV8542IDGKR, TLV8802DGKT uniquely balances ultra-low supply current (320 nA), EMI resilience, and rail-to-rail operation in a thermally robust VSSOP package-making it the preferred choice for certified safety-critical portable gas and smoke detectors requiring decade-long field reliability.
Availability
TLV8802DGKT is available at Aetrix Electronics and suitable for gas detectors, PIR motion sensors, ionization smoke alarms, portable medical equipment, and IoT edge nodes requiring stable component supply with guaranteed long-term manufacturability.
Supply support for TLV8802DGKT 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 amplifiers and low-power system solutions.
The TLV8802DGKT belongs to TI's nanopower op-amp product line, engineered specifically for cost-optimized, battery-powered sensing applications-including electrochemical gas detection, motion sensing, and portable diagnostics-where microamp-level current budgets and EMI immunity are non-negotiable.
FAQ
What is the maximum operating temperature for TLV8802DGKT?
The TLV8802DGKT is fully specified from –40°C to +125°C ambient temperature. Its 1 µV/°C offset drift and stable 320 nA supply current across this range make it suitable for under-hood automotive air quality sensors and industrial process monitoring equipment exposed to thermal extremes.
Does TLV8802DGKT support single-supply operation?
Yes, TLV8802DGKT supports true single-supply operation from 1.7 V to 5.5 V. Its input common-mode range extends to the negative rail (V−), and its rail-to-rail output swings within 3.5 mV of both supply rails-even at 1.8 V-enabling direct interfacing with low-voltage MCUs without level-shifting circuitry.
Can TLV8802DGKT drive capacitive loads directly?
No-TLV8802DGKT requires isolation resistance (RISO = 30–50 kΩ) when driving capacitive loads >50 pF. Direct connection risks instability and peaking due to phase lag; the recommended RISO value ensures stable unity-gain operation while preserving adequate output swing and drive capability in CO sensor TIA circuits.
What is the input bias current specification for TLV8802DGKT?
The TLV8802DGKT features ±100 fA typical input bias current at 1.8 V supply. This femtoamp-level performance minimizes IB × RF errors in transimpedance amplifiers using high-value feedback resistors (>10 MΩ), which is essential for accurate current-to-voltage conversion in electrochemical gas sensors.
Is TLV8802DGKT pin-compatible with other dual op-amps in VSSOP-8?
No-TLV8802DGKT has a unique pinout optimized for dual-channel potentiostat + TIA use cases: Pins 1/7 are outputs, Pins 2/3/5/6 are inputs, and Pins 4/8 are supplies. It is not pin-compatible with generic dual op-amps like LMV358 or TLV2372; PCB layout must follow the DGK package mapping shown in the official datasheet.
TLV8802DGKT 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
TLV8802DGKT FAQ
1.How can I place an order for TLV8802DGKT through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV8802DGKT 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 TLV8802DGKT reliable?
The price and inventory of TLV8802DGKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV8802DGKT is usually 5 days.
3.What payment methods are accepted for TLV8802DGKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV8802DGKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV8802DGKT?
TLV8802DGKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV8802DGKT 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 TLV8802DGKT?
For technical support, including TLV8802DGKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV8802DGKT requirements.
6.How does Aetrix verify that TLV8802DGKT is sourced from the original manufacturer or authorized distributors?
All TLV8802DGKT 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 TLV8802DGKT meets industry standards.
7.What is the process for return or replacement of TLV8802DGKT?
All TLV8802DGKT units undergo pre-shipment inspection (PSI). If there is an issue with TLV8802DGKT, 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 TLV8802DGKT part is unused and in its original packaging.
Return procedure for TLV8802DGKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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