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Texas Instruments LM34DMX/NOPB
- Part No.:
- LM34DMX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Analog and Digital Output
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM34DMX/NOPB.pdf
- Description:
- SENSOR ANALOG 32F-212F 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,539
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Product details
Overview
LM34DMX/NOPB from Texas Instruments is a precision analog Fahrenheit temperature sensor IC in an 8-pin SOIC package, delivering 10.0 mV/°F linear output, ±1.8°F accuracy over 32°F to 212°F, and 75 µA quiescent current - used for direct-readout thermal monitoring in HVAC control panels and industrial process sensors.
For engineers reviewing the LM34DMX/NOPB datasheet, LM34DMX/NOPB pinout, LM34DMX/NOPB application, or LM34DMX/NOPB equivalent, this page provides verified package mapping (SOIC-8), confirmed electrical behavior (no external calibration required, single-supply operation from 4 V to 30 V), thermal self-heating impact (<0.2°F in still air), and real-world interface constraints including 0.5 Ω output impedance and 50 pF capacitive drive limit.
Technical Context
The LM34DMX/NOPB implements a delta-VBE temperature sensing element buffered by a Class-A amplifier with fixed gain, producing a ratiometric analog voltage directly proportional to ambient Fahrenheit temperature without offset subtraction. Its output stage sources up to 16 µA but sinks only 1 µA, defining unidirectional load compatibility.
It operates across 4 V–30 V supply range with no need for dual supplies, exhibits ±0.6°F typical nonlinearity over its rated range, and maintains stable performance under varying load (±0.4 mV/mA) and supply (±0.01 mV/V) conditions - enabling direct ADC interfacing without signal conditioning in cost-sensitive embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Scale | 10.0 mV/°F - enables direct voltage-to-temperature conversion with no scaling math or lookup tables |
| Accuracy (32–212°F) | ±1.8°F max - ensures reliable setpoint detection in HVAC and appliance thermostats without calibration |
| Supply Range | 4 V to 30 V - supports wide-input industrial power rails and battery-backed systems without regulators |
| Quiescent Current | 75 µA at 5 V - allows multi-year operation on coin cells in remote wireless sensor nodes |
| Output Impedance | 0.5 Ω - drives 1-mA loads with <0.5 mV error, eliminating need for output buffer op-amps |
| Thermal Self-Heating | <0.2°F in still air - prevents measurement drift during long-term enclosure-mounted deployments |
| Capacitive Drive Limit | 50 pF - defines maximum trace length or bypass capacitance before requiring RC damping network |
Pinout & Package
LM34DMX/NOPB uses an 8-pin SOIC (D package), 4.90 mm × 3.91 mm body size, with GND connected to Pin 4, VOUT on Pin 1, +VS on Pin 8, and five No-Connection (N.C.) terminals (Pins 2, 3, 5, 6, 7) - designed for surface-mount assembly and PCB space optimization in compact modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +VS (Pin 8) | Positive Power Supply | Accepts 4–30 V DC; internal regulation not required; decoupling capacitor recommended near pin |
| VOUT (Pin 1) | Analog Temperature Output | 10.0 mV/°F linear voltage; low-impedance source (0.5 Ω); limited sink capability (1 µA) |
| GND (Pin 4) | Ground Reference | Return path for supply and output; must be low-impedance connection to minimize noise coupling |
| N.C. (Pins 2,3,5,6,7) | No Connection | Internally unconnected; must remain floating - no routing, soldering, or grounding permitted |
Key Features
| Feature | Design Value |
|---|---|
| Wafer-level trimming | Eliminates post-assembly calibration labor and test fixtures in high-volume manufacturing |
| Fahrenheit-native scaling | Removes software offset subtraction step required by Kelvin-scaled sensors, reducing firmware complexity |
| Single-supply operation | Enables use in 5 V or 12 V systems without negative rail generation or level-shifting circuitry |
| Low self-heating (0.18°F) | Preserves thermal equilibrium when mounted on thermally sensitive surfaces like PCB traces or heatsinks |
| Hermetic-grade stability | ±0.16°F long-term drift after 1000 hours at max temperature - suitable for sealed industrial enclosures |
Applications
| Industrial Process Monitoring | HVAC Thermostat Control |
|---|---|
Use Scenario: Continuous temperature logging inside steam-jacketed reactors and heat exchangers operating from 32°F to 212°F. IC Role / Device Role / Timing Role: Analog temperature transducer providing real-time voltage output proportional to process fluid temperature. Use Value: ±1.8°F accuracy enables precise PID loop tuning without field recalibration; SOIC-8 footprint simplifies integration into DIN-rail-mounted controllers. |
Use Scenario: Wall-mounted residential HVAC control unit requiring stable room temperature feedback across seasonal ambient shifts. IC Role / Device Role / Timing Role: Primary ambient temperature sensing element feeding microcontroller ADC input. Use Value: 75 µA quiescent current extends battery life in backup-powered units; 10 mV/°F scaling reduces firmware math overhead. |
| Appliance Oven Sensing | Remote Battery-Powered Sensor Node |
Use Scenario: Embedded oven cavity temperature monitoring in smart kitchen appliances with safety-critical upper-limit detection. IC Role / Device Role / Timing Role: Safety-relevant temperature monitor interfaced to MCU via analog input with watchdog-triggered shutdown logic. Use Value: Rated 32–212°F range matches cooking temperature envelope; TO-46-compatible thermal response allows fast ramp tracking. |
Use Scenario: Wireless environmental sensor node deployed in unpowered attic spaces, powered by CR2032 coin cell. IC Role / Device Role / Timing Role: Low-power analog front-end delivering calibrated temperature data to BLE SoC ADC. Use Value: 75 µA current draw enables >2-year operation; SOIC-8 package permits automated reflow assembly with standard pick-and-place equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Fahrenheit temperature sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM34DZ/NOPB | Same SOIC-8 package and 32–212°F range, but TO-92 variant (LP package); 1800-unit tape-and-reel vs. 2500-unit for LM34DMX/NOPB | Lower thermal mass and faster response in air; less robust mechanical mounting than SOIC | Select LM34DZ/NOPB only when board space allows TO-92 placement and faster thermal settling is prioritized over vibration resistance |
| LM34CAZ/NOPB | TO-92 plastic package, −40°F to 230°F range, ±1.6°F accuracy, 75 µA IQ; lacks SOIC-8 footprint and N.C. pin configuration | Broadened low-temp capability suits freezer monitoring; no surface-mount compatibility | Choose LM34CAZ/NOPB for cost-sensitive through-hole designs needing extended cold-range coverage, not for SMT production |
Compared with LM34DZ/NOPB and LM34CAZ/NOPB, the LM34DMX/NOPB uniquely combines SOIC-8 manufacturability, 2500-unit reel economics, and optimized 32–212°F HVAC/appliance range - making it the preferred choice for automated SMT lines targeting consumer and industrial thermal controls.
Availability
LM34DMX/NOPB is available at Aetrix Electronics and suitable for HVAC control systems, appliance thermal management, and industrial process monitoring requiring stable component supply, RoHS-compliant packaging, and long-lifecycle availability.
Supply support for LM34DMX/NOPB 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 leadership in precision analog sensing and industrial-grade IC design.
The LM34DMX/NOPB belongs to TI's precision analog temperature sensor product line, engineered specifically for direct Fahrenheit-scale measurement in cost-sensitive, high-volume thermal monitoring applications where simplicity, reliability, and wafer-level calibration are critical.
FAQ
What is the operating temperature range specified for the LM34DMX/NOPB?
The LM34DMX/NOPB is rated for operation from 32°F to 212°F (0°C to 100°C), with guaranteed accuracy and linearity across this full range. It is not characterized below 32°F or above 212°F per the official SNIS161D datasheet - using it outside this window may result in unverified accuracy or increased nonlinearity. The LM34DMX/NOPB shares this range with the LM34D family and differs from broader-range variants like the LM34 (−50°F to 300°F) or LM34C (−40°F to 230°F).
Does the LM34DMX/NOPB require external calibration or trimming?
No, the LM34DMX/NOPB does not require external calibration or trimming. Its precision is achieved via wafer-level laser trimming, delivering ±1.8°F accuracy over 32°F to 212°F without user adjustment. This eliminates production-line calibration steps and ensures consistent performance across batches - a key advantage confirmed in the SNIS161D datasheet Section 1 and Feature Description.
What are the supply voltage requirements for stable operation of the LM34DMX/NOPB?
The LM34DMX/NOPB operates reliably from 4 V to 30 V DC, with recommended conditions specifying 5 V to 30 V for optimal line regulation (±0.01 mV/V). Below 4 V, output may become nonlinear or cease entirely; above 30 V risks damage per absolute maximum ratings. A 0.1 µF ceramic bypass capacitor between +VS and GND is advised, especially in noisy environments, as noted in Section 9 of the SNIS161D datasheet.
How does the LM34DMX/NOPB handle capacitive loads on its VOUT pin?
The LM34DMX/NOPB can directly drive up to 50 pF without instability, per Section 7.3.1 of the SNIS161D datasheet. Larger capacitive loads (e.g., long PCB traces or ADC input capacitance) require isolation - either a series resistor (e.g., 75 Ω) with a parallel 0.2 µF capacitor to ground (RC damper), or a unity-gain buffer. Failure to address excess capacitance may cause oscillation or slow settling, degrading measurement fidelity.
Can the LM34DMX/NOPB be used in battery-powered applications?
Yes, the LM34DMX/NOPB is well-suited for battery-powered applications due to its 75 µA quiescent current at 5 V - enabling multi-year operation on common coin cells like CR2032. Its 4 V minimum supply allows use down to near-end-of-life battery voltage, and its low self-heating (<0.2°F) prevents thermal drift in enclosed, low-airflow deployments. These traits are validated in Sections 6.5 and 10.1 of the SNIS161D datasheet.
LM34DMX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Sensor Type:
- Analog, Local
- Sensing Temperature - Local:
- 32°F ~ 212°F
- Sensing Temperature - Remote:
- -
- Output Type:
- Analog Voltage
- Voltage - Supply:
- 4V ~ 30V
- Resolution:
- 10mV/°F
- Features:
- -
- Accuracy - Highest (Lowest):
- ±3°F
- Test Condition:
- 77°F
- Operating Temperature:
- 0°C ~ 100°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-SOIC
LM34DMX/NOPB FAQ
1.How can I place an order for LM34DMX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM34DMX/NOPB 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 LM34DMX/NOPB reliable?
The price and inventory of LM34DMX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM34DMX/NOPB is usually 5 days.
3.What payment methods are accepted for LM34DMX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM34DMX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM34DMX/NOPB?
LM34DMX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM34DMX/NOPB 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 LM34DMX/NOPB?
For technical support, including LM34DMX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM34DMX/NOPB requirements.
6.How does Aetrix verify that LM34DMX/NOPB is sourced from the original manufacturer or authorized distributors?
All LM34DMX/NOPB 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 LM34DMX/NOPB meets industry standards.
7.What is the process for return or replacement of LM34DMX/NOPB?
All LM34DMX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM34DMX/NOPB, 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 LM34DMX/NOPB part is unused and in its original packaging.
Return procedure for LM34DMX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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