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Texas Instruments PTLV8544PWT
- Part No.:
- PTLV8544PWT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
PTLV8544PWT.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,587
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Product details
Overview
PTLV8544PWT 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, 8 kHz gain-bandwidth product, and operates from 1.7 V to 3.6 V across –40°C to +125°C - enabling decade-long operation in CR2032-powered PIR motion detectors.
For engineers reviewing the PTLV8544PWT datasheet, PTLV8544PWT pinout, PTLV8544PWT application, or PTLV8544PWT equivalent, this page provides verified electrical specifications, validated TSSOP-14 pin functions, real-world IoT sensor interface use cases, and two confirmed alternative op amps with documented parameter and application differences.
Technical Context
The PTLV8544PWT employs a complementary CMOS input stage enabling rail-to-rail input operation across its full supply range, with a 400-mV transition region where PSRR and CMRR degrade. Its unity-gain stable architecture supports low-noise transimpedance amplifier (TIA) configurations using megaohm feedback resistors and high-impedance sensor interfaces.
It features femtoampere-level input bias current (100 fA), built-in EMI rejection (≥60 dB up to 1 GHz), and output swing within 12 mV of both rails at 3.3 V - critical for maximizing dynamic range in single-supply, low-voltage signal conditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 500 nA per channel - enables >8-year battery life on CR2032 in always-on PIR sensors |
| Offset Voltage | 3.1 mV (max) - ensures <±0.5% error in 100-mV sensor output amplification |
| Gain Bandwidth | 8 kHz - supports bandpass filtering up to ~36 Hz per stage in multi-stage PIR signal chains |
| Input Bias Current | 100 fA - minimizes IBR error in TIA designs with ≥10 MΩ feedback resistors |
| Supply Range | 1.7 V to 3.6 V - maintains functionality down to near-dead battery voltage (e.g., 1.8 V CR2032) |
| Temperature Range | –40°C to +125°C - qualified for industrial thermostats and automotive cabin motion detection |
| Output Swing | 12 mV from rails at 3.3 V - preserves >99% of available dynamic range in low-voltage systems |
Pinout & Package
PTLV8544PWT is housed in a 14-pin TSSOP package (5.00 mm × 4.40 mm body size), optimized for space-constrained PCB layouts in wireless sensor nodes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8, 14 (OUTA, OUTB, OUTC, OUTD) |
Amplifier output terminals | Four independent buffered outputs; each swings rail-to-rail with 12-mV headroom at 3.3 V |
| 2, 6, 9, 13 (–INA, –INB, –INC, –IND) |
Inverting inputs | Differential input pairs accept signals referenced to V– or mid-supply; support AC/DC-coupled configurations |
| 3, 5, 10, 12 (+INA, +INB, +INC, +IND) |
Non-inverting inputs | High-impedance (2 pF differential) nodes; enable unity-gain buffers and precision reference buffering |
| 4 (V+) | Positive power supply | Highest potential rail; accepts 1.7–3.6 V; decoupling capacitor required for EMI immunity |
| 11 (V–) | Negative power supply | Lowest potential rail; typically ground in single-supply systems; must be stable and low-noise |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input & output | Full common-mode range (V– to V+) and output swing within 12 mV of rails - maximizes signal fidelity in 1.8–3.3 V systems |
| Femtoampere input bias | 100 fA typical - eliminates IBR errors in high-Z sensor interfaces (e.g., PIR, gas, ionization smoke sensors) |
| EMI hardening | ≥60 dB rejection up to 1 GHz - suppresses interference from WiFi, Bluetooth, and cellular radios in IoT edge nodes |
| Ultra-low drift | 0.8 µV/°C offset drift - limits thermal-induced error to <1 µV over 50°C ambient shift in thermostat applications |
| Unity-gain stability | Internally compensated for stable operation with CL ≤ 50 pF - simplifies layout in compact sensor modules without external compensation |
Applications
| Motion Detection (PIR) | Gas Sensing Systems |
|---|---|
|
Use Scenario: Battery-powered wireless PIR motion detector using a dual-element pyroelectric sensor and CR2032 coin cell. IC Role / Device Role / Timing Role: Quad op amp implements two active bandpass filter stages (0.7–10.6 Hz) and a window comparator to detect valid motion signatures. Use Value: 500-nA quiescent current per channel extends battery life to >8 years while maintaining sub-1-mV offset stability across temperature. |
Use Scenario: Electrochemical gas sensor signal conditioning in portable air quality monitors. IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) converts nanoamp-level sensor current into measurable voltage with minimal IBR error. Use Value: 100-fA input bias prevents baseline drift in µA-range gas sensor outputs; RRIO operation preserves resolution across 0–3.3 V ADC input range. |
| Ionization Smoke Alarms | Remote IoT Sensors |
|
Use Scenario: Low-power, self-contained smoke alarm with alpha-particle ionization chamber and MCU-based logic. IC Role / Device Role / Timing Role: Amplifies tiny ion current changes (fA–pA) from chamber electrodes; drives comparator for alarm threshold detection. Use Value: Sub-µV/°C drift and rail-to-rail output ensure reliable triggering across –10°C to +50°C operating environments without calibration. |
Use Scenario: Long-life environmental sensor node measuring temperature, humidity, and CO₂ in smart agriculture deployments. IC Role / Device Role / Timing Role: Signal conditioner for analog-output sensors (e.g., thermistors, NTCs) feeding ultra-low-power SAR ADCs. Use Value: 1.7-V minimum supply allows operation during brownout conditions; 125°C rating supports outdoor enclosures in direct sunlight. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nanopower operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LPV812DRXT | Lower offset (0.3 mV max), higher IQ (425 nA), wider supply (1.6–5.5 V) | Better DC accuracy in precision thermistor bridges; less suitable for <2-V battery systems | Choose LPV812DRXT when offset-critical DC gain stages dominate; avoid if supply drops below 1.7 V |
| TLV8804IPWR | Lower IQ (320 nA), higher VOS (4.5 mV max), same RRIO and TSSOP-14 package | Optimized for lowest possible power in non-precision AC-coupled motion triggers | Choose TLV8804IPWR only when battery life is paramount and offset tolerance >4 mV is acceptable |
Compared with PTLV8544PWT, LPV812DRXT offers superior DC accuracy but sacrifices low-voltage operation, while TLV8804IPWR reduces current draw by 36% at the cost of 45% higher offset - making PTLV8544PWT the balanced choice for cost-optimized, wide-temperature, single-supply sensor front-ends.
Availability
PTLV8544PWT is available at Aetrix Electronics and suitable for motion detection, gas sensing, ionization smoke alarms, and remote IoT sensor nodes requiring stable component supply with guaranteed long-term manufacturability.
Supply support for PTLV8544PWT 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 low-power signal conditioning and sensor interface ICs.
The TLV8544 family was engineered specifically for cost-sensitive, battery-powered sensing applications - delivering nanopower efficiency without compromising rail-to-rail performance or industrial temperature reliability.
FAQ
What is the maximum capacitive load the PTLV8544PWT can drive directly?
The PTLV8544PWT is unity-gain stable up to 50 pF without external compensation. For loads exceeding 50 pF, TI recommends adding a series isolation resistor (RISO) between the output and capacitive load to maintain phase margin and prevent peaking or oscillation. Typical RISO values range from 10 Ω to 50 kΩ depending on load size and required bandwidth - with higher values improving stability but reducing output drive capability. This behavior is explicitly characterized in Figure 31 of the PTLV8544PWT datasheet.
Does the PTLV8544PWT support true rail-to-rail input at 1.7-V supply?
Yes, the PTLV8544PWT maintains rail-to-rail input operation down to 1.7 V, with common-mode voltage range extending from V– to V+. However, the input stage transitions between N- and P-channel pairs near V+ – 0.8 V to V+ – 1.2 V; outside this 400-mV region, PSRR and CMRR remain optimal. At 1.7 V, the usable linear input range remains fully rail-to-rail, and the device meets all specifications across –40°C to +125°C per the PTLV8544PWT datasheet Section 6.3.
Can the PTLV8544PWT be used in a transimpedance amplifier (TIA) configuration?
Yes, the PTLV8544PWT is well-suited for TIA applications due to its 100-fA input bias current, rail-to-rail output, and low input capacitance (2 pF differential). It has been validated in electrochemical gas sensor and photodiode front-ends with feedback resistors up to 100 MΩ. Stability requires careful attention to stray capacitance and optional feedback capacitance (typically 0.1–1 pF) to control gain peaking - guidance is provided in Section 7.4.4 of the PTLV8544PWT datasheet.
What is the ESD rating of the PTLV8544PWT?
The PTLV8544PWT has an HBM ESD rating of ±1000 V and a CDM rating of ±250 V, per JEDEC standards JS-001 and JESD22-C101. These ratings are specified in Section 6.2 of the official PTLV8544PWT datasheet and reflect robustness suitable for standard automated assembly processes with proper ESD controls. Input pins are diode-clamped to V+ and V– rails, limiting transient voltage excursions to ±0.3 V beyond supply rails.
Is the PTLV8544PWT pin-compatible with other TI quad nanopower op amps?
No - the PTLV8544PWT uses a unique pinout optimized for sensor signal routing in motion detection circuits (e.g., adjacent IN+/IN– pairs, distributed outputs). It is not pin-compatible with LPV814, TLV8804, or TLV9004. Engineers must verify pin functions in Section 5 ("Pin Configuration and Functions") of the PTLV8544PWT datasheet before board reuse. The 14-pin TSSOP package footprint is identical, but signal mapping differs significantly.
PTLV8544PWT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 550nA (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-TSSOP
PTLV8544PWT FAQ
1.How can I place an order for PTLV8544PWT through Aetrix?
Please submit a Request for Quotation (RFQ) for PTLV8544PWT 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 PTLV8544PWT reliable?
The price and inventory of PTLV8544PWT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PTLV8544PWT is usually 5 days.
3.What payment methods are accepted for PTLV8544PWT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PTLV8544PWT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PTLV8544PWT?
PTLV8544PWT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PTLV8544PWT 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 PTLV8544PWT?
For technical support, including PTLV8544PWT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PTLV8544PWT requirements.
6.How does Aetrix verify that PTLV8544PWT is sourced from the original manufacturer or authorized distributors?
All PTLV8544PWT 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 PTLV8544PWT meets industry standards.
7.What is the process for return or replacement of PTLV8544PWT?
All PTLV8544PWT units undergo pre-shipment inspection (PSI). If there is an issue with PTLV8544PWT, 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 PTLV8544PWT part is unused and in its original packaging.
Return procedure for PTLV8544PWT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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