My Inquiry
My Account
Texas Instruments LM4040CIZ-5.0/NOPB
- Part No.:
- LM4040CIZ-5.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
LM4040CIZ-5.0/NOPB.pdf
- Description:
- IC VREF SHUNT 0.5% TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:217
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM4040CIZ-5.0/NOPB from Texas Instruments is a precision micropower shunt voltage reference in TO-92 package, delivering a fixed 5.0 V reverse breakdown voltage with ±0.5% initial tolerance (C grade), 100 ppm/°C max temperature coefficient, and 74 μA minimum operating current. It operates from −40°C to +85°C and serves as a stable reference in analog signal chains for data acquisition and field transmitters.
For engineers reviewing the LM4040CIZ-5.0/NOPB datasheet, LM4040CIZ-5.0/NOPB pinout, LM4040CIZ-5.0/NOPB application, or LM4040CIZ-5.0/NOPB equivalent, this page provides verified specifications, TO-92 terminal mapping, automotive-grade thermal stability data, and validated alternative parts for industrial and energy infrastructure designs.
Technical Context
The LM4040CIZ-5.0/NOPB uses Zener-zap trimming during wafer sort to achieve ±0.5% output voltage accuracy at 25°C and integrates bandgap-derived curvature correction for low drift over temperature. Its shunt architecture requires no external capacitor and tolerates capacitive loads up to 10 nF without oscillation.
It delivers 5.0 V nominal output across 74–15,000 μA operating current range, with 0.8 mV typical voltage change from 74 μA to 1 mA and 6 mV from 1 mA to 15 mA. Reverse dynamic impedance is 0.9 Ω at 1 mA, enabling high PSRR in low-noise sensor front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V nominal reverse breakdown voltage, stable under load and temperature variation |
| Initial Tolerance | ±0.5% at 25°C (C grade), corresponding to ±25 mV absolute error |
| Temp Coefficient | ≤100 ppm/°C over −40°C to +85°C, limiting drift to ±5.2 mV across full range |
| Min Operating Current | 74 μA - sets minimum bias resistor value for given supply voltage |
| Max Operating Current | 15 mA - defines maximum power dissipation limit (425 mW at 5.0 V) |
| Output Noise | 35 μVrms (10 Hz–10 kHz) - suitable for 16-bit ADC reference applications |
| Thermal Hysteresis | 0.08% - ensures repeatability after thermal cycling between −40°C and +125°C |
Pinout & Package
LM4040CIZ-5.0/NOPB uses the TO-92 (LP) package: 4.30 mm × 4.30 mm body, axial leads, through-hole mounting. Pin 1 is Anode (grounded), Pin 2 is Cathode (output/reference node), Pin 3 is NC (no connect, must float or tie to anode).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Reference ground node | Must be connected to system ground; establishes cathode voltage relative to GND |
| Cathode (Pin 2) | Shunt current sink / output node | Provides 5.0 V reference; sinks current from external bias resistor into load |
| NC (Pin 3) | No-connect terminal | Must remain unconnected or tied to anode; not internally bonded in TO-92 variant |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Enables direct integration into space-constrained PCBs without stability-compensation components |
| Tolerates capacitive loads | Stable with up to 10 nF load capacitance - supports filtering at reference node without phase margin loss |
| Micropower operation | 74 μA minimum current enables battery-powered or ultra-low-power sensor nodes |
| Zener-zap trimmed accuracy | Guarantees ±0.5% initial tolerance without post-package calibration |
| Automotive-qualified option | LM4040CQIZ-5.0/NOPB variant available AEC-Q100 Grade 3 (−40°C to +85°C) |
Applications
| Field Transmitters | Data Acquisition |
|---|---|
Use Scenario: 4–20 mA loop-powered sensor transmitter with microcontroller-based signal conditioning. IC Role / Device Role / Timing Role: Shunt voltage reference for DAC output scaling and ADC input full-scale calibration. Use Value: ±0.5% tolerance and 100 ppm/°C drift ensure <0.1% total error over industrial temperature range without recalibration. |
Use Scenario: Isolated 16-bit analog input module measuring thermocouple or strain gauge signals. IC Role / Device Role / Timing Role: Precision reference for SAR ADC and instrumentation amplifier gain-setting network. Use Value: 35 μVrms noise and 0.9 Ω dynamic impedance preserve ENOB >15.5 bits in DC-coupled measurement paths. |
| Energy Infrastructure | Industrial Analog Input Module |
Use Scenario: Smart electricity meter with metrology IC requiring stable 5.0 V reference for voltage/current channel alignment. IC Role / Device Role / Timing Role: Primary shunt reference feeding metrology ADC and anti-aliasing filter op-amps. Use Value: Thermal hysteresis ≤0.08% prevents offset drift after repeated grid fault-induced thermal cycling. |
Use Scenario: PLC analog input card supporting multiple sensor types (RTD, thermocouple, 0–10 V) with shared reference rail. IC Role / Device Role / Timing Role: Common 5.0 V reference source for multiplexed front-end gain stages and ADC conversion. Use Value: Wide 74 μA–15 mA operating range allows single design to support both low-power standby and full-load active modes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL431ACLP | Adjustable 2.495 V reference; requires two external resistors for 5.0 V setting; higher 2 mA min current | Less accurate (±1%) and higher quiescent current limits use in micropower systems | Select when adjustable output or higher output current (>100 mA) is needed; not drop-in for fixed 5.0 V |
| MAX6005EUR+T | Fixed 5.0 V shunt reference; ±0.2% initial tolerance; SC70-3 package; 60 μA min current | Better accuracy and lower startup current, but rated only for −40°C to +85°C (no automotive qualification) | Choose for tighter tolerance where AEC-Q100 compliance is not required and board space favors SC70 |
Compared with TL431ACLP and MAX6005EUR+T, LM4040CIZ-5.0/NOPB offers the only TO-92-packaged, AEC-Q100-capable 5.0 V shunt reference with C-grade accuracy and micropower operation - critical for legacy through-hole industrial designs requiring automotive reliability.
Availability
LM4040CIZ-5.0/NOPB is available at Aetrix Electronics and suitable for field transmitters, energy infrastructure monitoring, and industrial analog input modules requiring stable component supply with long-term traceability and extended temperature performance.
Supply support for LM4040CIZ-5.0/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 expertise in precision reference design and automotive-qualified components.
The LM4040-N series was developed for space-constrained, high-stability applications including industrial sensing, automotive subsystems, and portable instrumentation - emphasizing micropower operation, no-capacitor stability, and production-trimmed accuracy.
FAQ
What is the operating temperature range for LM4040CIZ-5.0/NOPB?
The LM4040CIZ-5.0/NOPB is specified for the industrial temperature range of −40°C to +85°C. This is confirmed in Section 5.3 (Recommended Operating Conditions) and Table 5.9 of the TI datasheet, which lists electrical characteristics for "Temperature Grade I" (Industrial). It is not rated for extended −40°C to +125°C operation unless marked as LM4040CQIZ-5.0/NOPB (AEC-Q100 Grade 3).
Does LM4040CIZ-5.0/NOPB require an external capacitor for stability?
No, LM4040CIZ-5.0/NOPB does not require an external capacitor for stability. As stated in the Features section and Description, its advanced design eliminates the need for an output capacitor while maintaining stability with any capacitive load - a key differentiator from older shunt references like TL431.
What is the minimum cathode current needed for LM4040CIZ-5.0/NOPB to regulate at 5.0 V?
The LM4040CIZ-5.0/NOPB requires a minimum cathode current of 74 μA to maintain regulation at 5.0 V, per Section 5.3 (Recommended Operating Conditions) and Table 5.17. This value is specific to the 5.0 V version and increases with output voltage across the LM4040-N family.
How does the LM4040CIZ-5.0/NOPB achieve its ±0.5% initial accuracy?
The LM4040CIZ-5.0/NOPB achieves ±0.5% initial accuracy via fuse and Zener-zap trimming during wafer sort, as documented in the Description section. This laser-trimmed process ensures the prime parts meet C-grade tolerance before packaging, eliminating need for post-mount calibration.
Can LM4040CIZ-5.0/NOPB replace LM4040AIM3-5.0 in a design?
LM4040CIZ-5.0/NOPB is not a direct replacement for LM4040AIM3-5.0 due to differing accuracy grades: AIM3 is A-grade (±0.1%), while CIZ is C-grade (±0.5%). Additionally, the TO-92 (CIZ) and SOT-23 (AIM3) packages have incompatible footprints and thermal characteristics - PCB redesign is required.
LM4040CIZ-5.0/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA)
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.5%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 80µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 80 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
LM4040CIZ-5.0/NOPB FAQ
1.How can I place an order for LM4040CIZ-5.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040CIZ-5.0/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 LM4040CIZ-5.0/NOPB reliable?
The price and inventory of LM4040CIZ-5.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040CIZ-5.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4040CIZ-5.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040CIZ-5.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040CIZ-5.0/NOPB?
LM4040CIZ-5.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040CIZ-5.0/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 LM4040CIZ-5.0/NOPB?
For technical support, including LM4040CIZ-5.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040CIZ-5.0/NOPB requirements.
6.How does Aetrix verify that LM4040CIZ-5.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4040CIZ-5.0/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 LM4040CIZ-5.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4040CIZ-5.0/NOPB?
All LM4040CIZ-5.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4040CIZ-5.0/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 LM4040CIZ-5.0/NOPB part is unused and in its original packaging.
Return procedure for LM4040CIZ-5.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4040CIZ-5.0/NOPB Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
-
LM4040CYM3-2.5-TR
Microchip Technology
-
LM4040CYM3-4.1-TR
Microchip Technology
-
LM4040EIM3-2.5/NOPB
Texas Instruments
-
AZ431LBNTR-G1
Diodes Incorporated
-
LM4040D20IDBZR
Texas Instruments
-
LM4041DIM3-ADJ/NOPB
Texas Instruments
-
LM4040DIM3X-2.5/NOPB
Texas Instruments
-
LM4040DIM3-2.5/NOPB
Texas Instruments
-
AZ431LANTR-G1
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
