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Texas Instruments LM61BIZ/NOPB
- Part No.:
- LM61BIZ/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Analog and Digital Output
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
LM61BIZ/NOPB.pdf
- Description:
- SENSOR ANALOG -25C-85C TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:5,546
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Product details
Overview
LM61BIZ/NOPB from Texas Instruments is a precision analog-output temperature sensor in TO-92 package, delivering linear 10 mV/°C output with 600 mV DC offset to support –25°C to +85°C sensing on a single 2.7-V supply. It achieves ±2°C accuracy at 25°C and ±3°C across its full operating range, with 125 µA quiescent current and 800 Ω max output impedance-enabling direct ADC interfacing in battery-powered thermal monitoring systems.
For engineers reviewing the LM61BIZ/NOPB datasheet, LM61BIZ/NOPB pinout, LM61BIZ/NOPB application, or LM61BIZ/NOPB equivalent, this page provides verified technical context, real-world design meaning for key specs, validated pin functions, application-specific implementation insights, and two confirmed alternative parts with documented functional trade-offs.
Technical Context
The LM61BIZ/NOPB uses a delta-VBE sensing element buffered by a Class-A output amplifier, producing a strictly linear analog voltage output proportional to absolute temperature. Its 600 mV offset enables negative-temperature measurement without dual supplies, while its low 125 µA quiescent current limits self-heating to ≤0.09°C in still air (TO-92 package, RθJA = 162.2°C/W).
It operates over 2.7 V to 10 V supply range and exhibits ±0.8°C nonlinearity over –25°C to +85°C. Output impedance remains ≤800 Ω across temperature and supply voltage, ensuring stable loading into standard 12-bit SAR ADCs without external buffering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Temperature Range | –25°C to +85°C - defines usable ambient/sensing environment without calibration derating |
| Accuracy at 25°C | ±2°C maximum - ensures reliable room-temperature reference in thermal management feedback loops |
| Accuracy (–25°C to +85°C) | ±3°C maximum - supports industrial-grade thermal monitoring in power supplies and embedded controllers |
| Output Slope | 10 mV/°C - simplifies firmware scaling: 1°C = 1 LSB for 10-bit ADC with 3.3 V reference |
| Supply Voltage | 2.7 V to 10 V - enables direct operation from Li-ion battery (3.0–4.2 V) or 3.3 V/5 V rails |
| Quiescent Current | 125 µA maximum at 25°C - allows continuous monitoring in <10 µA average-power systems using duty cycling |
| Output Impedance | 800 Ω maximum - permits direct connection to ADC inputs with ≤10 kΩ input impedance without gain error |
| Nonlinearity | ±0.8°C maximum - contributes <0.5% of full-scale error in 110°C span, acceptable for closed-loop fan control |
Pinout & Package
LM61BIZ/NOPB is housed in a 3-pin TO-92 (LP) plastic package (4.30 mm × 4.30 mm body), optimized for through-hole mounting and thermal coupling to PCBs or metal surfaces.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +VS | Positive power supply input | Accepts 2.7–10 V DC; must be bypassed with 0.1 µF capacitor to GND for noise immunity in noisy environments |
| VOUT | Analog temperature output | Provides 600 mV + (10 mV/°C × T); drives ADC directly-no external amplification needed for 12-bit resolution |
| GND | Ground reference | Return path for supply and output; die backside thermally bonded to this pin for accurate surface-temperature sensing |
Key Features
| Feature | Design Value |
|---|---|
| Calibrated 10 mV/°C slope | Eliminates need for per-unit gain calibration in production; reduces BOM count vs. uncalibrated sensors |
| 600 mV DC offset | Enables measurement down to –25°C using only positive supply-no level-shifting circuitry required |
| UL recognition | Validates safety compliance for end-equipment certification in consumer and industrial appliances |
| Low 125 µA supply current | Permits always-on thermal monitoring in energy-constrained devices such as portable medical monitors |
| 800 Ω output impedance | Ensures <0.1% gain error when driving typical 10 kΩ-input microcontroller ADCs without buffer op-amp |
| ±2°C accuracy at 25°C | Supports precise thermal compensation in oscillator circuits and voltage reference stabilization |
Applications
| Battery Management Systems | Power Supply Thermal Monitoring |
|---|---|
|
Use Scenario: Real-time cell temperature tracking during charge/discharge cycles in multi-cell Li-ion packs. IC Role / Device Role / Timing Role: Analog temperature transducer providing voltage output to MCU ADC for state-of-charge and thermal cutoff logic. Use Value: ±2°C accuracy at 25°C enables safe 45°C upper-threshold enforcement; 125 µA current draw minimizes parasitic drain on standby batteries. |
Use Scenario: Monitoring heatsink or MOSFET junction temperature in AC/DC and DC/DC converters. IC Role / Device Role / Timing Role: Primary thermal feedback element feeding into fan speed control or overtemperature shutdown circuitry. Use Value: 10 mV/°C slope allows direct mapping to PWM duty cycle; TO-92 package mounts directly to heatsink for <0.2°C thermal lag. |
| Consumer Electronics Thermal Protection | Industrial Control Panel Sensing |
|
Use Scenario: Preventing overheating in printers, FAX machines, and set-top boxes during sustained operation. IC Role / Device Role / Timing Role: Standalone analog sensor interfaced to system supervisor IC or microcontroller GPIO with ADC. Use Value: UL recognition satisfies end-product safety requirements; ±3°C accuracy over –25°C to +85°C covers full product environmental spec. |
Use Scenario: Ambient cabinet temperature monitoring in PLC enclosures and motor drive panels. IC Role / Device Role / Timing Role: Local temperature reference for compensating analog I/O channel drift and relay timing characteristics. Use Value: TO-92 mechanical robustness withstands vibration; 2.7 V min supply supports brownout-tolerant operation during line sags. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog-output temperature sensor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM61CIZ/NOPB | Wider –30°C to +100°C range; ±3°C accuracy at 25°C; same TO-92 package and pinout | Required for HVAC or automotive cabin sensing where sub-zero startup or high-temp operation is needed | Select LM61CIZ/NOPB when extended range is mandatory; LM61BIZ/NOPB offers tighter ±2°C spec at 25°C for cost-sensitive room-temp applications |
| TSIC506-100 | Digital (I²C) output; ±0.5°C accuracy; 1.7–3.6 V supply; SOT-23-3 package | Preferred for systems needing digital interface, higher accuracy, or lower supply voltage than 2.7 V | Choose TSIC506-100 when firmware supports I²C and higher precision is critical; LM61BIZ/NOPB avoids firmware overhead and supports simpler ADC-only designs |
Compared with LM61CIZ/NOPB, LM61BIZ/NOPB trades 5°C lower minimum temperature and 15°C lower maximum for improved 25°C accuracy and identical footprint compatibility; versus TSIC506-100, it sacrifices digital convenience and tighter tolerance to retain analog simplicity, ultra-low power, and legacy design compatibility.
Availability
LM61BIZ/NOPB is available at Aetrix Electronics and suitable for battery management systems, power supply thermal monitoring, and consumer electronics thermal protection requiring stable component supply and long-term industrial availability.
Supply support for LM61BIZ/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 company specializing in analog and embedded processing technologies, with leadership in precision signal chain and power management solutions.
The LM61 series was designed as a low-cost, easy-to-integrate analog temperature sensor family targeting cost-sensitive, space-constrained applications in computing, communications, and industrial equipment where simplicity and reliability outweigh digital interface needs.
FAQ
What is the operating temperature range of the LM61BIZ/NOPB?
The LM61BIZ/NOPB is rated for operation from –25°C to +85°C. This range is specified in the Electrical Characteristics table under Recommended Operating Conditions and confirmed in the Device Information section of the TI datasheet SNIS121J. Accuracy degrades to ±3°C across this full span, with ±2°C guaranteed only at 25°C.
Does the LM61BIZ/NOPB require external calibration?
No, the LM61BIZ/NOPB is factory-calibrated with a nominal 10 mV/°C slope and 600 mV offset. The datasheet states it provides ±2°C accuracy at 25°C without user calibration. Its linear transfer function VO = (10 mV/°C × T°C) + 600 mV eliminates the need for gain/offset trimming in most applications.
Can the LM61BIZ/NOPB be used with a 3.3-V microcontroller ADC?
Yes, the LM61BIZ/NOPB is fully compatible with 3.3-V systems. Its output spans 350 mV (–25°C) to 1450 mV (85°C), fitting within the 0–3.3 V ADC input range. With 800 Ω max output impedance and 125 µA supply current, it drives typical MCU ADCs directly-no buffer or level shift is required.
What is the thermal response time of the LM61BIZ/NOPB in still air?
In still air, the LM61BIZ/NOPB (TO-92 package) has a thermal time constant of approximately 10 seconds to reach 63% of a step temperature change, as shown in Figure 5 of the TI datasheet. This behavior is consistent with its RθJA of 162.2°C/W and low thermal mass, making it suitable for slow-varying thermal environments like enclosure ambient monitoring.
Is the LM61BIZ/NOPB RoHS compliant and lead-free?
Yes, the LM61BIZ/NOPB is RoHS compliant and features Sn (tin) lead finish, as confirmed in the Package Option Addendum of the TI datasheet. The "NOPB" suffix explicitly denotes lead-free packaging, and the part marking "LM61 BIZ" appears on all shipped units meeting JEDEC J-STD-020 moisture sensitivity and reflow requirements.
LM61BIZ/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA)
- Packaging:
- Box
- Product Status:
- Active
- Sensor Type:
- Analog, Local
- Sensing Temperature - Local:
- -30°C ~ 100°C
- Sensing Temperature - Remote:
- -
- Output Type:
- Analog Voltage
- Voltage - Supply:
- 2.7V ~ 10V
- Resolution:
- 10mV/°C
- Features:
- Shutdown Mode
- Accuracy - Highest (Lowest):
- ±2°C (±3°C)
- Test Condition:
- 25°C (-25°C ~ 85°C)
- Operating Temperature:
- -25°C ~ 85°C
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- TO-92-3
LM61BIZ/NOPB FAQ
1.How can I place an order for LM61BIZ/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM61BIZ/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 LM61BIZ/NOPB reliable?
The price and inventory of LM61BIZ/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM61BIZ/NOPB is usually 5 days.
3.What payment methods are accepted for LM61BIZ/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM61BIZ/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM61BIZ/NOPB?
LM61BIZ/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM61BIZ/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 LM61BIZ/NOPB?
For technical support, including LM61BIZ/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM61BIZ/NOPB requirements.
6.How does Aetrix verify that LM61BIZ/NOPB is sourced from the original manufacturer or authorized distributors?
All LM61BIZ/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 LM61BIZ/NOPB meets industry standards.
7.What is the process for return or replacement of LM61BIZ/NOPB?
All LM61BIZ/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM61BIZ/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 LM61BIZ/NOPB part is unused and in its original packaging.
Return procedure for LM61BIZ/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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