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Texas Instruments TLV8544DT
- Part No.:
- TLV8544DT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLV8544DT.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:696
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Product details
Overview
TLV8544DT from Texas Instruments is a quad-channel, rail-to-rail input/output (RRIO), nanopower operational amplifier designed for ultra-low-power sensing front-ends in battery-operated systems. It delivers 500 nA per channel quiescent current, 3.1 mV maximum offset voltage, and 8 kHz gain-bandwidth product across –40°C to +125°C, enabling long-life motion detection in PIR-based security nodes.
For engineers reviewing the TLV8544DT datasheet, TLV8544DT pinout, TLV8544DT application, or TLV8544DT equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions for TSSOP-14, application-specific implementation insights, and two confirmed alternative parts with documented functional and packaging differences.
Technical Context
The TLV8544DT uses a complementary CMOS input stage-N-channel and P-channel differential pairs-to achieve rail-to-rail input operation across its full 1.7 V to 3.6 V supply range. This architecture introduces a ~400 mV transition region near V+ where PSRR, CMRR, and offset drift degrade due to input pair switching.
Its unity-gain stable, internally compensated core delivers 8 kHz bandwidth with 264 nV/√Hz input voltage noise density at 1 kHz and 8.6 µVP–P 0.1–10 Hz noise-optimized for high-impedance transimpedance amplifiers (TIAs) in gas and smoke detectors requiring femtoampere-level input bias current (100 fA typical).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 500 nA per channel at 3.3 V - enables >10-year coin-cell operation in always-on PIR sensors |
| Input Offset Voltage | 3.1 mV max - supports accurate DC-coupled signal conditioning in thermostats and glucose monitors |
| Gain Bandwidth | 8 kHz - sufficient for low-frequency sensor outputs (PIR, microwave motion, ionization chamber signals) |
| Input Bias Current | 100 fA - minimizes IBIAS error in megaohm-feedback TIAs used in gas detectors |
| Rail-to-Rail I/O | Input common-mode range extends to V– and V+; output swings within 12 mV of rails at 3.3 V - maximizes dynamic range in single-supply 1.8–3.3 V systems |
| EMI Immunity | Built-in EMI protection reduces sensitivity to RF interference from WiFi/mobile phones - critical for reliable operation in IoT edge nodes |
| Operating Temperature | –40°C to +125°C - qualified for industrial thermostats, automotive cabin sensors, and remote environmental monitors |
Pinout & Package
TLV8544DT is packaged in a 14-pin TSSOP (PW) with body size 5.00 mm × 4.40 mm, optimized for space-constrained PCB layouts in wireless sensor nodes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8, 14 | OUTA, OUTB, OUTC, OUTD | Amplified output terminals for each of four independent channels; rail-to-rail swing enables full utilization of ADC input range |
| 2, 6, 9, 13 | –INA, –INB, –INC, –IND | Inverting inputs - matched for precision differential configurations; low 100 fA bias current preserves high-source-impedance signal integrity |
| 3, 5, 10, 12 | +INA, +INB, +INC, +IND | Non-inverting inputs - support unity-gain buffers and high-Z sensor interfaces without loading |
| 4 | V+ | Positive supply rail - accepts 1.7–3.6 V single supply; powers all four op-amps simultaneously |
| 11 | V– | Negative supply rail - typically ground in single-supply systems; reference for all input/output voltage ranges |
Key Features
| Feature | Design Value |
|---|---|
| Nanopower Operation | 500 nA per channel enables multi-year battery life in CR2032-powered PIR motion detectors and portable medical sensors |
| Rail-to-Rail Input Stage | Complementary N/P-channel input pairs extend common-mode range to both supply rails - eliminates need for level-shifting in low-voltage designs |
| Femtoampere Input Bias | 100 fA typical bias current prevents signal loss in high-impedance (>10 MΩ) sensor interfaces like electrochemical gas cells |
| EMI Hardened Architecture | On-die filtering suppresses RF rectification from 800 MHz–2.4 GHz sources - ensures stable output in dense wireless environments |
| Extended Temp Range | Specified from –40°C to +125°C - supports deployment in uncontrolled environments including HVAC ducts and outdoor IoT enclosures |
Applications
| PIR Motion Detection | Gas Sensing Systems |
|---|---|
|
Use Scenario: Battery-powered wireless security node detecting human motion via pyroelectric infrared (PIR) sensor output. IC Role / Device Role / Timing Role: Quad op-amp configures dual-stage gain, bandpass filtering, and window comparison - one TLV8544DT handles full analog signal chain. Use Value: 500 nA per channel quiescent current extends CR2032 coin-cell life beyond 5 years while maintaining sub-mV offset stability over temperature. |
Use Scenario: Portable electrochemical gas detector measuring trace CO or NO₂ concentrations using microamp-level sensor currents. IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) with >10 MΩ feedback resistor converting sensor current to voltage; remaining channels condition and compare output. Use Value: 100 fA input bias current prevents significant IBIAS error in high-gain TIA stages - critical for ±1 ppm measurement accuracy. |
| Ionization Smoke Alarms | Remote Environmental Sensors |
|
Use Scenario: UL-listed residential smoke alarm using ionization chamber and low-power MCU for continuous monitoring. IC Role / Device Role / Timing Role: Amplifies tiny ion current (fA–pA range) from chamber; drives comparator for threshold detection. Use Value: Rail-to-rail input allows direct interface to chamber without external biasing; 3.1 mV max VOS ensures reliable alarm triggering across temperature extremes. |
Use Scenario: LoRaWAN-enabled soil moisture/temperature node deployed in agricultural fields with 10+ year battery target. IC Role / Device Role / Timing Role: Signal conditioner for capacitive humidity sensor and thermistor network - performs buffering, filtering, and reference generation. Use Value: 1.7–3.6 V supply range matches aging Li-SOCl₂ battery profile; 125°C rating supports operation inside sun-exposed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nanopower operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV8544DR | Same electrical specs; SOIC-14 package (8.65 mm × 3.91 mm) - 43% larger footprint than TSSOP-14 | Preferred for through-hole prototyping or legacy board compatibility; less suitable for space-constrained IoT modules | Select TLV8544DR only when SOIC hand-soldering or existing SOIC layout reuse is required. |
| LPV812DRX | Lower 0.3 mV max VOS but higher 425 nA IQ; same SOIC-8 dual-channel format - not pin-compatible with TLV8544DT | Better for precision DC-coupled applications (e.g., glucose meter front-end); requires redesign for quad-channel needs | Choose LPV812DRX when offset-critical single-supply sensing dominates over ultra-low IQ requirements. |
Compared with TLV8544DT, TLV8544DR offers identical performance in a larger SOIC package for easier assembly, while LPV812DRX trades 75 nA higher quiescent current for 10× lower offset voltage - making it suitable for precision analog chains where battery life is secondary to DC accuracy.
Availability
TLV8544DT is available at Aetrix Electronics and suitable for PIR motion detectors, gas analyzers, ionization smoke alarms, and remote environmental sensors requiring stable component supply across extended temperature and long-lifecycle deployments.
Supply support for TLV8544DT 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 TLV854x family was engineered specifically for cost-optimized, battery-powered sensing applications - targeting motion detection, gas analysis, and safety-critical environmental monitoring where nanopower operation and rail-to-rail performance are essential.
FAQ
What is the maximum supply voltage for TLV8544DT?
The absolute maximum supply voltage for TLV8544DT is 4 V, but the recommended operating range is 1.7 V to 3.6 V. Operating above 3.6 V risks permanent damage and violates the production data specifications defined in the SNOSD29E datasheet. For coin-cell applications, 3.0 V nominal (CR2032) or 3.3 V regulated supplies are optimal for TLV8544DT.
Does TLV8544DT support true rail-to-rail output swing?
Yes, TLV8544DT delivers rail-to-rail output swing: at 3.3 V supply, it swings within 12 mV of both V+ and V– under 100 kΩ load. This capability is explicitly characterized in Section 7.5 of the datasheet and enables full utilization of 12-bit ADC input ranges in low-voltage systems without external level-shifting circuitry.
Can TLV8544DT drive capacitive loads directly?
TLV8544DT is unity-gain stable but becomes unstable with capacitive loads >50 pF directly on the output. As detailed in Section 8.4.7, an isolation resistor (RISO) must be placed between the output and load capacitance to maintain phase margin. For 100 pF loads, RISO ≥ 10 kΩ is recommended - a design requirement confirmed in Figure 31 and application note SNAA301.
What is the input bias current specification for TLV8544DT?
TLV8544DT has a typical input bias current of 100 fA, with no maximum specified - only a typical value provided in Section 7.5. This ultra-low bias current is achieved via its CMOS input stage and is critical for preserving signal integrity in high-impedance sensor interfaces such as electrochemical gas cells and ionization chambers, where leakage would otherwise dominate the measured signal.
Is TLV8544DT qualified for automotive applications?
TLV8544DT is not AEC-Q200 qualified and is not marketed for automotive use. Its –40°C to +125°C operating range meets industrial temperature requirements, but it lacks automotive-specific reliability testing, qualification documentation, or part numbering suffixes (e.g., "Q1"). For automotive cabin or under-hood sensors, TI's TLV9004-Q1 or OPA333-Q1 families are designated alternatives.
TLV8544DT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- 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:
- 500nA (x4 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:
- 14-SOIC
TLV8544DT FAQ
1.How can I place an order for TLV8544DT through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV8544DT 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 TLV8544DT reliable?
The price and inventory of TLV8544DT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV8544DT is usually 5 days.
3.What payment methods are accepted for TLV8544DT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV8544DT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV8544DT?
TLV8544DT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV8544DT 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 TLV8544DT?
For technical support, including TLV8544DT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV8544DT requirements.
6.How does Aetrix verify that TLV8544DT is sourced from the original manufacturer or authorized distributors?
All TLV8544DT 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 TLV8544DT meets industry standards.
7.What is the process for return or replacement of TLV8544DT?
All TLV8544DT units undergo pre-shipment inspection (PSI). If there is an issue with TLV8544DT, 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 TLV8544DT part is unused and in its original packaging.
Return procedure for TLV8544DT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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