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Texas Instruments LM136AH-5.0
- Part No.:
- LM136AH-5.0
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-206AB, TO-46-3 Metal Can
- Datasheet:
-
LM136AH-5.0.pdf
- Description:
- IC VREF SHUNT 1% TO46-3
- Quantity:
- Payment:
- Shipping:
Inventory:957
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Product details
Overview
LM136AH-5.0 from Texas Instruments is a precision 5.0V shunt voltage reference diode in a TO-metal-can package, rated for −40°C to +125°C operation, with ±1% initial tolerance, 0.6Ω dynamic impedance, and 600 μA to 10 mA operating current range. It serves as a stable low-voltage reference in digital voltmeters, precision power supplies, and op-amp biasing circuits.
For engineers reviewing the LM136AH-5.0 datasheet, LM136AH-5.0 pinout, LM136AH-5.0 application, or LM136AH-5.0 equivalent, key selection criteria include temperature stability over extended industrial range, trimmable voltage/temperature coefficient, low dynamic impedance, and compatibility with both positive and negative reference configurations.
Technical Context
The LM136AH-5.0 operates as a monolithic shunt regulator with zener-like behavior but integrates trimming capability via its third terminal, enabling precise adjustment of both output voltage (±1 V typical) and temperature coefficient. Its architecture supports direct use as either a positive or negative reference without polarity constraints.
It features low-temperature-coefficient design (20–36 mV drift over −55°C to +125°C), fast turn-on response, and wide current compliance-enabling stable regulation even under varying load or supply conditions. The device's 0.6Ω dynamic impedance ensures minimal output voltage variation across its 600 μA–10 mA operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 5.00 V nominal at 1 mA; tight 4.95–5.05 V min/max for A-grade variant ensures high-accuracy system calibration. |
| Initial Tolerance | ±1% at 25°C; enables single-point calibration in production test without post-trim adjustments. |
| Operating Current | 600 μA to 10 mA; supports low-power sensor interfaces and high-current buffer stages without external current limiting. |
| Dynamic Impedance | 0.6 Ω typical; minimizes load-induced voltage shift in feedback networks and ADC reference paths. |
| Temp Range | −40°C to +125°C; qualified for under-hood automotive, industrial control, and aerospace-adjacent environments. |
| Temp Stability | 20–36 mV max drift over full range; allows predictable error budgeting in wide-temperature applications. |
| Adjustment Range | ±1 V typical via external potentiometer; supports fine-tuning to compensate for PCB trace resistance or buffer amplifier offset. |
Pinout & Package
LM136AH-5.0 uses a 3-pin TO-metal-can (NDV) package with hermetic sealing and thermal performance optimized for high-reliability applications. Package height ≤2.67 mm; lead spacing 2.54 mm; compatible with standard through-hole reflow or hand-soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Current sink node | Connects to ground or negative rail when used as positive reference; defines current path direction for shunt operation. |
| Cathode (Pin 2) | Reference output node | Delivers regulated 5.0V; must be decoupled with ≥100 nF capacitor for noise-sensitive applications. |
| Adjust (Pin 3) | Trim control terminal | Enables simultaneous tuning of breakdown voltage and temperature coefficient using external resistor network per Figure 14/15. |
Key Features
| Feature | Design Value |
|---|---|
| Three-terminal trimmability | Independent adjustment of reference voltage and temperature coefficient eliminates need for matched component sets in high-stability designs. |
| Low dynamic impedance | 0.6 Ω maintains <1 mV output shift under 1 mA load transients-critical for 16-bit+ data acquisition systems. |
| Wide operating current range | 600 μA–10 mA accommodates ultra-low-power IoT sensors and high-drive analog front-ends without redesign. |
| Extended temperature rating | −40°C to +125°C operation supports deployment in engine control units, motor drives, and outdoor instrumentation. |
| Shunt topology flexibility | Configurable as positive or negative reference enables reuse across dual-supply and single-supply architectures. |
Applications
| Digital Voltmeter Reference | Precision Power Supply Feedback |
|---|---|
Use Scenario: High-resolution handheld DVM requiring stable 5.0V reference for 24-bit sigma-delta ADC conversion. IC Role / Device Role / Timing Role: Shunt voltage reference providing excitation and scaling reference for ADC internal DAC and gain calibration. Use Value: ±1% initial tolerance and 20 mV max temp drift over −40°C to +85°C enable factory calibration valid across operating range without software compensation. | Use Scenario: Programmable lab bench power supply with 0.01% output accuracy requirement. IC Role / Device Role / Timing Role: Precision shunt reference in op-amp error amplifier feedback loop controlling series pass transistor. Use Value: 0.6Ω dynamic impedance ensures <50 μV output ripple contribution even during 100 mA load steps, preserving regulation fidelity. |
| Op-Amp Biasing Network | Industrial Sensor Signal Conditioning |
Use Scenario: Rail-to-rail op-amp circuit operating from single 5V supply with mid-rail virtual ground generation. IC Role / Device Role / Timing Role: Stable 2.5V mid-point reference created by resistive divider from LM136AH-5.0 output. Use Value: Low temp drift prevents common-mode shift in instrumentation amplifiers measuring microvolt-level thermocouple signals. | Use Scenario: 4–20 mA transmitter module conditioning RTD or strain gauge outputs in oil & gas field instruments. IC Role / Device Role / Timing Role: Primary voltage reference for excitation current source and ADC reference in isolated analog signal chain. Use Value: Hermetic TO-can package and −40°C to +125°C rating ensure long-term stability in uncontrolled ambient enclosures exposed to thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM336BM-5.0/NOPB | SOIC-8 package; 0°C to +70°C rating; ±1% tolerance; 0.8Ω dynamic impedance. | Limited to commercial-temperature applications; surface-mount only; higher impedance increases load sensitivity. | Choose for cost-sensitive, space-constrained PCBs where extended temperature range is not required. |
| TL431ACDR | Adjustable 2.495V reference; SOIC-8; ±1% tolerance; 0.22Ω impedance; requires external resistors for 5V setup. | Not pin-compatible; needs two external resistors; lower voltage headroom limits use with low-dropout regulators. | Prefer when adjustable output or tighter impedance is critical, and board area permits resistor placement. |
Compared with LM136AH-5.0, LM336BM-5.0/NOPB trades hermetic reliability and extended temperature range for compact SMT packaging, while TL431ACDR offers lower impedance and adjustability at the cost of added external components and reduced native 5V accuracy.
Availability
LM136AH-5.0 is available at Aetrix Electronics and suitable for digital voltmeters, precision power supplies, op-amp biasing networks, and industrial sensor signal conditioning requiring stable component supply across extended temperature ranges.
Supply support for LM136AH-5.0 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 solutions, with leadership in precision analog ICs and high-reliability components.
The LM136 series was designed for applications demanding stable, trimmable voltage references in harsh environments-including automotive subsystems, industrial controls, and test equipment-where hermetic packaging and wide temperature operation are essential.
FAQ
What is the maximum operating temperature for LM136AH-5.0?
The LM136AH-5.0 is rated for continuous operation from −40°C to +125°C. This extended range is validated per TI's production testing and thermal characterization, making it suitable for under-hood automotive modules and industrial motor drives where ambient temperatures exceed standard commercial limits. The device's thermal resistance (θJA = 440°C/W) supports reliable junction temperature management in properly heatsinked layouts.
Can LM136AH-5.0 be used as a negative voltage reference?
Yes, LM136AH-5.0 can function as a negative voltage reference by reversing its connection: connect the cathode to system ground and the anode to the negative rail. Its shunt architecture allows bidirectional current flow, enabling stable −5.0V reference generation without additional active components. This configuration is explicitly supported in TI's application diagrams (e.g., Figure 21) and maintains full specification compliance across the rated temperature range.
How do I adjust the output voltage of LM136AH-5.0?
LM136AH-5.0 output voltage is adjusted using its dedicated Pin 3 (Adjust) terminal with an external potentiometer, as shown in TI's Figure 14. A 10 kΩ potentiometer between Anode (Pin 1) and Adjust (Pin 3), with wiper connected to Cathode (Pin 2), provides ±1 V typical trim range. For minimum temperature coefficient, add four silicon signal diodes (e.g., 1N4148) in series with the potentiometer per Figure 15-ensuring all diodes share thermal proximity with the LM136AH-5.0 die.
What is the minimum operating current for LM136AH-5.0 to maintain regulation?
The LM136AH-5.0 requires a minimum reverse current of 600 μA to maintain specified regulation accuracy and dynamic impedance. Below this threshold, output voltage deviates from 5.00 V and temperature stability degrades. Designers must ensure bias networks or load paths guarantee ≥600 μA total current through the device-even during standby or low-power modes-to preserve reference integrity in battery-operated or energy-harvesting systems.
Is LM136AH-5.0 RoHS compliant?
Yes, LM136AH-5.0/NOPB is RoHS compliant, as confirmed by TI's Package Option Addendum (15-Jul-2026). The "NOPB" suffix denotes lead-free finish, and the part carries Level-1 MSL rating with peak reflow temperature of 260°C. Full compliance documentation-including substance declarations and test reports-is accessible via TI's Quality & Environmental Information portal using the orderable part number LM136AH-5.0/NOPB.
LM136AH-5.0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- TO-206AB, TO-46-3 Metal Can
- Series:
- -
- Packaging:
- Box
- Product Status:
- Active
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±1%
- Temperature Coefficient:
- -
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 600 µA
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-46-3
LM136AH-5.0 FAQ
1.How can I place an order for LM136AH-5.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM136AH-5.0 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 LM136AH-5.0 reliable?
The price and inventory of LM136AH-5.0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM136AH-5.0 is usually 5 days.
3.What payment methods are accepted for LM136AH-5.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM136AH-5.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM136AH-5.0?
LM136AH-5.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM136AH-5.0 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 LM136AH-5.0?
For technical support, including LM136AH-5.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM136AH-5.0 requirements.
6.How does Aetrix verify that LM136AH-5.0 is sourced from the original manufacturer or authorized distributors?
All LM136AH-5.0 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 LM136AH-5.0 meets industry standards.
7.What is the process for return or replacement of LM136AH-5.0?
All LM136AH-5.0 units undergo pre-shipment inspection (PSI). If there is an issue with LM136AH-5.0, 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 LM136AH-5.0 part is unused and in its original packaging.
Return procedure for LM136AH-5.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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