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Texas Instruments TLV8542RUGR
- Part No.:
- TLV8542RUGR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-XFQFN
- Datasheet:
-
TLV8542RUGR.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8X2QFN
- Quantity:
- Payment:
- Shipping:
Inventory:11,911
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Product details
Overview
TLV8542RUGR from Texas Instruments is a dual-channel nanopower rail-to-rail input/output operational amplifier designed for ultra-low-power sensing front-ends in battery-operated systems. It delivers 500 nA per channel supply current, 3.1 mV maximum offset voltage, and 8 kHz gain bandwidth across –40°C to +125°C, enabling long-life motion detection in PIR-based security sensors.
For engineers reviewing the TLV8542RUGR datasheet, TLV8542RUGR pinout, TLV8542RUGR application, or TLV8542RUGR equivalent, key selection criteria include its femtoampere input bias current (100 fA), 1.7–3.6 V single-supply operation, EMI-hardened architecture, and compatibility with high-impedance transimpedance amplifier configurations in IoT sensor nodes.
Technical Context
The TLV8542RUGR employs a complementary CMOS input stage-parallel N-channel and P-channel differential pairs-to achieve true rail-to-rail input operation across its full common-mode range, with a defined 400-mV transition region where PSRR and CMRR degrade. Its unity-gain stable architecture supports direct use in buffer and gain stages without external compensation.
Internally compensated for 8 kHz GBW, it features built-in EMI protection to suppress interference from mobile phones and WiFi, and its output swings within 12 mV of both rails at 3.3 V supply-critical for maximizing dynamic range in low-voltage, high-precision analog signal conditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 550–640 nA per channel at 3.3 V - enables multi-year operation on coin-cell batteries in always-on sensor nodes |
| Input Offset Voltage | Max 3.1 mV - ensures ≤0.1% error in 3.3 V full-scale measurement without trimming |
| Offset Drift | 0.8 µV/°C - maintains sub-µV/°C stability over industrial temperature range (–40°C to +125°C) |
| Gain Bandwidth | 8 kHz - sufficient for DC-coupled PIR signal amplification and low-frequency gas sensor outputs |
| Input Bias Current | 100 fA - minimizes IBR errors in TIA designs using ≥10 MΩ feedback resistors |
| Common-Mode Range | Rail-to-rail (V– to V+) - supports direct interfacing with unbuffered resistive sensors and reference dividers |
| Output Swing | 12 mV from rails at 3.3 V - preserves >99% of available voltage headroom for ADC input scaling |
Pinout & Package
TLV8542RUGR is housed in an 8-pin X2QFN package (1.50 mm × 1.50 mm, 0.4 mm pitch) with wettable flanks for automated optical inspection. The thermally enhanced bottom-exposed pad improves power dissipation in space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplified output of Channel A - drives downstream ADC input or comparator threshold with rail-to-rail swing |
| 2 | –IN A | Inverting input of Channel A - connects to feedback network in inverting amplifier or TIA configuration |
| 3 | +IN A | Non-inverting input of Channel A - interfaces directly with high-Z PIR sensor output or reference voltage |
| 4 | V– | Negative supply rail - shared ground reference for both channels; must be low-impedance for noise immunity |
| 5 | +IN B | Non-inverting input of Channel B - enables dual-sensor monitoring (e.g., PIR + ambient light) on single IC |
| 6 | –IN B | Inverting input of Channel B - supports independent gain setting or differential sensing with Channel A |
| 7 | OUT B | Amplified output of Channel B - provides second analog channel without additional die area or quiescent current |
| 8 | V+ | Positive supply rail - accepts 1.7–3.6 V single supply; decoupling capacitor required within 1 mm of pin |
Key Features
| Feature | Design Value |
|---|---|
| EMI-hardened input stage | Reduces RF-induced output errors from mobile/WiFi sources without external filtering components |
| Femtoampere input bias | Enables accurate amplification of picoamp-level photocurrents in ionization smoke detectors |
| Ultra-low IQ per channel | 500 nA typical allows continuous sampling every 10 seconds for >10 years on CR2032 coin cell |
| Rail-to-rail output swing | 12 mV from rails at 3.3 V maximizes usable ADC input range in 12-bit SAR converters |
| Extended temperature range | Specified from –40°C to +125°C supports deployment in unregulated outdoor enclosures and HVAC ducts |
Applications
| PIR Motion Detection | Gas Sensing Systems |
|---|---|
|
Use Scenario: Battery-powered wireless occupancy sensor detecting human movement via pyroelectric infrared (PIR) element. IC Role / Device Role / Timing Role: Dual-channel amplifier conditioning weak AC-coupled PIR signal (≈10 mVpp) while rejecting 50/60 Hz mains noise. Use Value: 100 fA input bias prevents signal loss across high-value feedback resistors (>100 MΩ); 500 nA IQ extends CR2032 life beyond 5 years. |
Use Scenario: Portable CO or methane detector using electrochemical or metal-oxide semiconductor (MOS) sensor. IC Role / Device Role / Timing Role: Low-drift transimpedance amplifier converting nanoamp-level sensor current into measurable voltage. Use Value: 0.8 µV/°C drift minimizes calibration drift over temperature; rail-to-rail input accommodates sensor zero-current offset without level-shifting. |
| IoT Remote Sensors | Medical Glucose Monitoring |
|
Use Scenario: Sub-GHz LoRaWAN node measuring soil moisture, temperature, and ambient light in agricultural field deployments. IC Role / Device Role / Timing Role: Signal conditioner for multiple passive sensors-amplifying thermistor voltage divider, photodiode current, and capacitive humidity output. Use Value: Dual-channel integration reduces BOM count and PCB area; 1.7 V minimum supply supports aging lithium primary cells down to end-of-life. |
Use Scenario: Disposable glucose test strip reader requiring single-use, low-cost, and ultra-low-power analog front-end. IC Role / Device Role / Timing Role: Precision current-to-voltage converter for amperometric glucose oxidase reaction current (1–100 nA range). Use Value: 3.1 mV max VOS ensures <0.1% full-scale error at 100 mV output; EMI hardening prevents false readings near cellular handsets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nanopower op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LPV821DRX | Lower IQ (65 nA), higher VOS (1.25 mV typ), same 8-pin X2QFN package | Better for ultra-long-life (<10 yr) battery apps; less suitable for precision DC-coupled sensing due to higher drift (3.5 µV/°C) | Choose LPV821DRX when supply current is dominant constraint and offset drift tolerance >3 µV/°C |
| TLV8802DR | Lower IQ (320 nA), wider supply (1.7–5.5 V), but higher VOS (4.5 mV max) and no EMI hardening | Supports higher-voltage sensor interfaces (e.g., 5 V reference chains); lacks RF immunity for dense wireless environments | Choose TLV8802DR when operating above 3.6 V or when EMI robustness is not required |
Compared with LPV821DRX and TLV8802DR, TLV8542RUGR offers the best balance of precision (3.1 mV VOS, 0.8 µV/°C drift), EMI resilience, and proven performance in certified PIR motion detectors-making it optimal for safety-critical, battery-operated environmental sensing where reliability trumps minimal IQ.
Availability
TLV8542RUGR is available at Aetrix Electronics and suitable for PIR motion detectors, portable gas analyzers, remote IoT sensor nodes, and disposable medical diagnostics requiring stable component supply across extended product lifecycles.
Supply support for TLV8542RUGR 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 signal conditioning.
The TLV8542RUGR belongs to TI's nanopower op amp family, engineered specifically for cost-optimized, battery-constrained sensing applications-including motion, gas, smoke, and medical diagnostics-where microamp-level current budgets and rail-to-rail performance are mandatory.
FAQ
What is the maximum operating temperature for TLV8542RUGR?
The TLV8542RUGR is fully specified from –40°C to +125°C ambient temperature. All electrical parameters-including offset voltage, supply current, and gain bandwidth-are guaranteed across this extended industrial range, making TLV8542RUGR suitable for deployment in unheated outdoor enclosures, automotive under-hood modules, and HVAC duct-mounted sensors.
Does TLV8542RUGR support rail-to-rail output swing?
Yes, TLV8542RUGR delivers rail-to-rail output swing: at 3.3 V supply, it swings within 12 mV of both V+ and V– rails under 100 kΩ load. This capability preserves >99% of available dynamic range for interfacing with 12-bit or higher-resolution ADCs-critical for maximizing SNR in low-voltage, battery-powered systems.
Can TLV8542RUGR drive capacitive loads directly?
TLV8542RUGR is unity-gain stable but becomes unstable with capacitive loads >50 pF. For reliable operation, TI recommends adding a series isolation resistor (RISO = 10–50 kΩ) between the output and load capacitance. This preserves phase margin without degrading DC accuracy-verified in TLV8542RUGR's application note SNAA301 for PIR motion detectors.
What is the input bias current specification for TLV8542RUGR?
The TLV8542RUGR features an ultra-low input bias current of 100 fA (typical) and ≤100 fA (maximum) across –40°C to +125°C. This enables high-fidelity transimpedance amplifier designs with feedback resistors up to 1 GΩ-essential for amplifying weak currents from photodiodes, electrochemical gas sensors, and ionization smoke chamber electrodes.
Is TLV8542RUGR pin-compatible with other packages in the TLV854x family?
No-TLV8542RUGR uses the 8-pin X2QFN (RUG) package, while the SOIC variant (TLV8542D) uses an 8-pin SOIC footprint. Pin functions are identical (1=OUTA, 2=–INA, etc.), but RUG and D packages are not mechanically interchangeable due to different pad layouts, thermal pads, and solder reflow profiles. Board redesign is required when switching between them.
TLV8542RUGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-XFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.0045V/µs
- Gain Bandwidth Product:
- 8 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.1 pA
- Voltage - Input Offset:
- 3.4 mV
- Current - Supply:
- 550nA (x2 Channels)
- Current - Output / Channel:
- 15 mA
- Voltage - Supply Span (Min):
- 1.7 V
- Voltage - Supply Span (Max):
- 3.6 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-X2QFN (1.5x1.5)
TLV8542RUGR FAQ
1.How can I place an order for TLV8542RUGR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV8542RUGR 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 TLV8542RUGR reliable?
The price and inventory of TLV8542RUGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV8542RUGR is usually 5 days.
3.What payment methods are accepted for TLV8542RUGR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV8542RUGR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV8542RUGR?
TLV8542RUGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV8542RUGR 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 TLV8542RUGR?
For technical support, including TLV8542RUGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV8542RUGR requirements.
6.How does Aetrix verify that TLV8542RUGR is sourced from the original manufacturer or authorized distributors?
All TLV8542RUGR 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 TLV8542RUGR meets industry standards.
7.What is the process for return or replacement of TLV8542RUGR?
All TLV8542RUGR units undergo pre-shipment inspection (PSI). If there is an issue with TLV8542RUGR, 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 TLV8542RUGR part is unused and in its original packaging.
Return procedure for TLV8542RUGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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