My Inquiry
My Account
Texas Instruments LM4128DQ1MF4.1/NOPB
- Part No.:
- LM4128DQ1MF4.1/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4128DQ1MF4.1/NOPB.pdf
- Description:
- IC VREF SERIES 1% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,964
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM4128DQ1MF4.1/NOPB from Texas Instruments is a precision micropower series voltage reference in 5-pin SOT-23 (DBV) package, delivering 4.096 V output with ±1.0% initial accuracy (Grade D), 100 ppm/°C max temperature coefficient, and 60 µA supply current. It features an enable pin for 3 µA shutdown mode, supports up to 20 mA load, and operates from −40°C to +125°C - ideal for battery-powered instrumentation and automotive sensor signal conditioning.
For engineers reviewing the LM4128DQ1MF4.1/NOPB datasheet, LM4128DQ1MF4.1/NOPB pinout, LM4128DQ1MF4.1/NOPB application, or LM4128DQ1MF4.1/NOPB equivalent, key selection criteria include its 4.096 V output voltage, Grade D accuracy and tempco, SOT-23 footprint compatibility, enable-controlled power gating, and stability with capacitive loads up to 10 µF without external compensation.
Technical Context
The LM4128DQ1MF4.1/NOPB implements a band-gap-derived series voltage reference architecture with internal enable logic and low-dropout regulation. Its design eliminates need for external stabilization capacitors while maintaining stability with output capacitance up to 10 µF, enabling compact layout in space-constrained systems.
It operates over VIN = VREF + 400 mV to 5.5 V at 10 mA load, delivers 4.096 V nominal output with 350 µVPP (0.1–10 Hz) noise, and provides indefinite short-circuit protection limiting output current to 75 mA - critical for robustness in industrial analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096 V nominal; matches common 12-bit DAC/ADC full-scale reference points for direct interface without scaling. |
| Initial Accuracy | ±1.0% (Grade D); ensures ≤41 mV absolute error at 25°C for cost-sensitive calibration-critical applications. |
| Tempco | 100 ppm/°C max; contributes ≤±500 µV drift over −40°C to +125°C ambient, suitable for automotive-grade sensing. |
| Supply Current | 60 µA typical; enables >1-year battery life in 10 µA-sleep IoT nodes when paired with enable control. |
| Dropout Voltage | 400 mV max at 10 mA; allows operation from 4.5 V supply with margin, compatible with standard 5 V rails and LDO outputs. |
| Enable Shutdown Current | 3–7 µA; reduces system standby power by >90% vs active mode, essential for energy-harvesting designs. |
| Noise (0.1–10 Hz) | 350 µVPP; supports 14-bit effective resolution in precision data acquisition without additional filtering. |
Pinout & Package
LM4128DQ1MF4.1/NOPB uses the 5-pin SOT-23 (DBV) package - 2.9 mm × 1.6 mm × 1.15 mm body, gull-wing leads, RoHS-compliant matte tin lead finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - N/C | No-connect terminal | Must remain unconnected and floating; no internal connection - PCB pad may be omitted or left unmasked. |
| 2 - GND | Analog ground reference | Primary return path for reference output and internal bias; requires low-impedance connection to clean AGND plane. |
| 3 - EN | Active-high enable input | Drives internal regulator on VIH ≥65% VIN; pulls down to GND or floats to disable (3 µA shutdown). |
| 4 - VIN | Input supply rail | Accepts 4.496 V to 5.5 V (≥VREF + 400 mV); must be bypassed with ≥0.1 µF ceramic capacitor per layout guidelines. |
| 5 - VREF | Precision reference output | Delivers stable 4.096 V; capable of sourcing up to 20 mA; stable with COUT up to 10 µF ceramic (low ESR). |
Key Features
| Feature | Design Value |
|---|---|
| Grade D precision | Guaranteed ±1.0% initial accuracy and 100 ppm/°C tempco - balances cost and performance for non-military industrial use. |
| Enable-controlled shutdown | Reduces quiescent current to 3–7 µA, enabling microcontroller-gated power sequencing in portable test equipment. |
| Capacitor-free stability | Operates stably without mandatory output capacitor; simplifies BOM and layout while supporting optional COUT for transient improvement. |
| Automotive qualification | AEC-Q100 Grade 1 qualified (−40°C to +125°C TJ); manufactured on automotive flow - suitable for under-hood sensor modules. |
| Low-noise 4.096 V output | 350 µVPP (0.1–10 Hz) enables direct interface to 12-bit SAR ADCs without gain-stage noise amplification. |
Applications
| Portable Data Loggers | Automotive Sensor Signal Conditioning |
|---|---|
Use Scenario: Battery-powered environmental monitoring node sampling temperature, humidity, and pressure at 1 Hz. IC Role / Device Role / Timing Role: Provides stable 4.096 V reference for 12-bit ADC and microcontroller VREF input. Use Value: Enables <1 µA average system sleep current via EN pin control and maintains ±0.5 LSB linearity over temperature. |
Use Scenario: Engine coolant temperature and manifold absolute pressure (MAP) sensor signal conditioning module. IC Role / Device Role / Timing Role: Supplies precision excitation voltage and ADC reference in dual-role configuration. Use Value: AEC-Q100 Grade 1 rating and 100 ppm/°C tempco ensure consistent sensor offset/gain calibration across full automotive thermal range. |
| Industrial PLC Analog Input Modules | Medical Patient Monitoring Front-Ends |
Use Scenario: 4–20 mA loop-powered I/O card digitizing field transmitter signals with galvanic isolation. IC Role / Device Role / Timing Role: Local isolated reference for sigma-delta ADC, decoupled from noisy 24 V bus. Use Value: 60 µA supply current minimizes isolated-side power draw; 350 µVPP noise supports 14-bit ENOB in 100 ksps acquisition. |
Use Scenario: Portable ECG/SpO₂ device requiring low-power, high-accuracy biopotential measurement. IC Role / Device Role / Timing Role: Reference source for instrumentation amplifier gain-setting and ADC conversion. Use Value: 4.096 V output aligns with 12-bit medical ADC full scale; long-term stability ≤50 ppm/1000 hrs ensures calibration validity between service intervals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3040AIDBZR | 4.096 V, ±0.2% initial accuracy (Grade A), 50 ppm/°C, 50 µA IQ, SOT-23-5 | Higher accuracy and lower tempco; no enable pin; not AEC-Q100 qualified | Select for lab-grade test equipment where Grade D tolerance is insufficient but automotive qualification is unnecessary. |
| MAX6126AASA41+ | 4.096 V, ±0.1% initial accuracy, 3 ppm/°C, 120 µA IQ, SO-8 | Ultra-low drift and noise; larger SO-8 package; higher supply current; no enable | Choose for metrology-grade applications demanding sub-ppm stability where board space and power budget allow. |
Compared with REF3040AIDBZR and MAX6126AASA41+, the LM4128DQ1MF4.1/NOPB trades absolute precision for integrated enable control, automotive qualification, and ultra-low shutdown current - making it optimal for cost-sensitive, battery-aware, and automotive-qualified systems where ±1% accuracy is acceptable.
Availability
LM4128DQ1MF4.1/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, automotive sensor modules, and industrial PLC analog input designs requiring stable component supply with guaranteed long-term availability and automotive-grade traceability.
Supply support for LM4128DQ1MF4.1/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, embedded processing, and connectivity technologies, with decades of expertise in precision analog ICs and automotive-qualified components.
The LM4128 product line delivers micropower, enable-capable series voltage references optimized for space-constrained, battery-operated, and automotive applications demanding stable, low-drift reference voltages across extended temperature ranges.
FAQ
What is the output voltage tolerance of LM4128DQ1MF4.1/NOPB over temperature?
The LM4128DQ1MF4.1/NOPB has a maximum temperature coefficient of 100 ppm/°C over −40°C to +125°C junction temperature. Combined with its ±1.0% initial accuracy at 25°C, total output deviation remains within ±1.25% across the full operating range - verified per AEC-Q100 Grade 1 requirements. This makes LM4128DQ1MF4.1/NOPB suitable for automotive cabin and engine bay applications where thermal stability is critical.
Does LM4128DQ1MF4.1/NOPB require an external output capacitor?
No, LM4128DQ1MF4.1/NOPB is designed to operate stably without an external output capacitor. It remains stable with capacitive loads up to 10 µF, including optional ceramic COUT for improved load transient response. However, an input capacitor (CIN ≥ 0.1 µF) is mandatory for stable operation - a requirement explicitly stated in the TI datasheet and validated in all LM4128DQ1MF4.1/NOPB application circuits.
What is the minimum input voltage required for LM4128DQ1MF4.1/NOPB to regulate properly?
The LM4128DQ1MF4.1/NOPB requires VIN ≥ VREF + 400 mV to maintain regulation, i.e., ≥4.496 V at 10 mA load. At lighter loads, dropout decreases - e.g., 175 mV typical at 10 mA for 4.096 V variants. Operation below this threshold causes output voltage collapse; the part does not enter dropout gracefully but ceases regulation. This 400 mV dropout spec is guaranteed across −40°C to +125°C for LM4128DQ1MF4.1/NOPB.
How does the enable pin (EN) function on LM4128DQ1MF4.1/NOPB?
The EN pin on LM4128DQ1MF4.1/NOPB is an active-high digital control input. When pulled ≥65% of VIN, the device operates normally (60 µA IQ). When pulled ≤35% of VIN or grounded, it enters shutdown mode drawing only 3–7 µA. The pin features an internal ~2 µA pull-up, allowing direct connection to VIN for always-on operation. Floating EN is not recommended - TI specifies explicit drive for reliable state control in LM4128DQ1MF4.1/NOPB.
Is LM4128DQ1MF4.1/NOPB pin-compatible with other LM4128 variants?
Yes, all LM4128 variants - including LM4128DQ1MF4.1/NOPB - share identical 5-pin SOT-23 (DBV) packaging and pinout (N/C, GND, EN, VIN, VREF). Voltage options (1.8 V to 4.096 V) and grade suffixes (A/B/C/D) do not affect mechanical or electrical pin compatibility. This allows drop-in replacement during design iteration or BOM optimization, provided system-level accuracy and tempco requirements are re-verified for the new variant.
LM4128DQ1MF4.1/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 20 mA
- Tolerance:
- ±1%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- 350µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 4.496V ~ 5.5V
- Current - Supply:
- 100µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LM4128DQ1MF4.1/NOPB FAQ
1.How can I place an order for LM4128DQ1MF4.1/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4128DQ1MF4.1/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 LM4128DQ1MF4.1/NOPB reliable?
The price and inventory of LM4128DQ1MF4.1/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4128DQ1MF4.1/NOPB is usually 5 days.
3.What payment methods are accepted for LM4128DQ1MF4.1/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4128DQ1MF4.1/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4128DQ1MF4.1/NOPB?
LM4128DQ1MF4.1/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4128DQ1MF4.1/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 LM4128DQ1MF4.1/NOPB?
For technical support, including LM4128DQ1MF4.1/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4128DQ1MF4.1/NOPB requirements.
6.How does Aetrix verify that LM4128DQ1MF4.1/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4128DQ1MF4.1/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 LM4128DQ1MF4.1/NOPB meets industry standards.
7.What is the process for return or replacement of LM4128DQ1MF4.1/NOPB?
All LM4128DQ1MF4.1/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4128DQ1MF4.1/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 LM4128DQ1MF4.1/NOPB part is unused and in its original packaging.
Return procedure for LM4128DQ1MF4.1/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4128DQ1MF4.1/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…
