My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6129AEUK50+T
- Part No.:
- MAX6129AEUK50+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6129AEUK50+T.pdf
- Description:
- IC VREF SERIES 0.4% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,947
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6129AEUK50+T from Maxim Integrated is a micropower, low-dropout series-mode bandgap voltage reference delivering a precise 5.000V output with ±0.4% initial accuracy and 40ppm/°C max temperature coefficient in a 5-pin SOT23 package. It sources up to 4mA, sinks up to 1mA, operates from 5.2V to 12.6V supply, draws only 10.5µA max supply current, and maintains stability with capacitive loads up to 10µF - ideal for high-accuracy, battery-powered precision ADC/DAC systems.
For engineers reviewing the MAX6129AEUK50+T datasheet, MAX6129AEUK50+T pinout, MAX6129AEUK50+T application, or MAX6129AEUK50+T equivalent, key selection criteria include ultra-low quiescent current (10.5µA max), 200mV dropout at 4mA load, no external compensation requirement, and guaranteed performance across –40°C to +85°C.
Technical Context
The MAX6129AEUK50+T uses a series-mode architecture with internal compensation, eliminating need for external capacitors while ensuring stability with 0–10µF output capacitance during sourcing and up to 0.4µF during sinking. Its BiCMOS process enables ultra-low supply current drift (≤1.5µA/V over VIN) and tight thermal hysteresis (140ppm).
It delivers 5.000V output with 0.1% line regulation (34–375 µV/V) and 0.3–0.8 µV/µA load regulation across full operating range, supporting precision data conversion where reference drift directly impacts LSB error in 12–18-bit systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000V ±0.4% at +25°C - ensures ≤1LSB error in 12-bit ADCs over –40°C to +85°C when used with ≤100°C span |
| Temperature Coefficient | 40ppm/°C max - limits output drift to ±0.02% over full temperature range |
| Supply Current | 10.5µA max - enables >10-year battery life in 10µA-sleep IoT sensor nodes |
| Dropout Voltage | 200mV max at 4mA load - allows operation from 5.2V input, critical for single-cell Li-ion or 5V rail margining |
| Load Regulation | 0.3–0.8 µV/µA - maintains <100µV shift under full 4mA sourcing or 1mA sinking load change |
| Noise (10Hz–1kHz) | 245µVRMS - contributes <0.5 LSB noise in 16-bit 5V full-scale ADCs |
| Stability | Stable with 0–10µF capacitive loads - eliminates need for output capacitor in space-constrained designs |
Pinout & Package
The MAX6129AEUK50+T is housed in a miniature 5-pin SOT23-5 surface-mount package (JEDEC MO-178AA), occupying 70% less board area than SO-8 alternatives. Pin 1 is IN, Pin 2 is GND, Pins 3 and 4 are internally connected no-connect terminals (may be left floating or tied to GND), and Pin 5 is OUT.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Positive voltage supply input | Accepts 5.2V–12.6V; no bypass capacitor required, but 0.1µF ceramic improves transient response |
| 2 (GND) | Analog ground reference | Must be low-impedance connection to system ground plane; substrate tied to GND per chip topology |
| 3, 4 (N.C.) | Internally connected, unused | May be left unconnected or tied to GND; no electrical function - not signal or power paths |
| 5 (OUT) | Precision 5.000V reference output | Sources 4mA / sinks 1mA; stable without external capacitor up to 10µF load capacitance |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low 10.5µA max supply current | Enables multi-year operation on coin-cell batteries in portable instrumentation and wireless sensors |
| No external compensation capacitor required | Reduces BOM count and PCB footprint - critical for miniaturized medical and handheld devices |
| 200mV dropout at 4mA load | Permits use with tightly regulated 5V rails or aging Li-ion cells down to 5.2V without output collapse |
| ±0.4% initial accuracy and 40ppm/°C TC | Meets stringent calibration requirements in portable DMMs and precision data loggers |
| Stable with 0–10µF output capacitance | Supports direct connection to ADC reference inputs or LDO feedback networks without instability risk |
Applications
| Battery-Powered Precision Instruments | A/D and D/A Converters |
|---|---|
Use Scenario: Handheld digital multimeters requiring 16-bit resolution and 8-hour battery life on CR2032. IC Role / Device Role / Timing Role: Primary voltage reference for SAR ADC and internal DAC calibration. Use Value: 40ppm/°C TC and 0.4% initial accuracy maintain <0.01% total unadjusted error across operating temperature, eliminating field recalibration. | Use Scenario: Isolated industrial data acquisition module with 12-bit ADC and microcontroller-based DAC. IC Role / Device Role / Timing Role: Shared reference source for both ADC and DAC to ensure ratiometric accuracy and monotonicity. Use Value: Matching 5.000V output minimizes gain mismatch errors; ultra-low 10.5µA supply current reduces system standby power by >30% vs. legacy references. |
| Precision Power Supplies | Handheld Medical Devices |
Use Scenario: Programmable bench power supply with 0.1% output setting accuracy and remote sense capability. IC Role / Device Role / Timing Role: Reference for voltage-setting DAC and feedback loop comparator. Use Value: Low 0.3 µV/µA load regulation prevents output drift during dynamic load transients; 200mV dropout enables operation from 5.2V auxiliary rail. | Use Scenario: Portable ECG monitor with analog front-end and 16-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Low-noise reference for ADC and analog signal conditioning stages. Use Value: 245µVRMS (10Hz–1kHz) noise contributes <0.5 LSB error in 5V full-scale 16-bit conversion; no external cap saves space in compact enclosure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5050AIDR | 5.0V output, 0.05% initial accuracy, 3ppm/°C TC, 1.2mA supply current, SO-8 package | Higher accuracy and lower drift, but 115× higher supply current and larger footprint | Select for lab-grade metrology where ultra-low drift outweighs battery life and size constraints |
| ADR3450ARJZ-R7 | 5.0V output, 0.1% initial accuracy, 10ppm/°C TC, 120µA supply current, SOT23-5 package | Lower TC and better accuracy than MAX6129AEUK50+T, but 11× higher quiescent current | Select when moderate battery life is acceptable and tighter long-term stability is required |
Compared with REF5050AIDR and ADR3450ARJZ-R7, the MAX6129AEUK50+T trades absolute precision for extreme power efficiency and minimal footprint - uniquely suited for space- and energy-constrained portable instrumentation where 0.4% accuracy and 40ppm/°C TC meet system-level error budgets.
Availability
MAX6129AEUK50+T is available at Aetrix Electronics and suitable for battery-powered instruments, precision data converters, handheld medical devices, and low-power industrial sensors requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6129AEUK50+T 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
Maxim Integrated (now part of Analog Devices) designs precision analog and mixed-signal ICs for demanding industrial, medical, and communications applications.
The MAX6129 family targets ultra-low-power, high-accuracy voltage references for portable and battery-operated systems where supply current, size, and thermal stability are primary constraints.
FAQ
What is the maximum load current the MAX6129AEUK50+T can source and sink?
The MAX6129AEUK50+T can source up to 4mA and sink up to 1mA of load current while maintaining specified accuracy and stability. This dual-direction capability supports active pull-up/pull-down configurations in precision DAC buffers and sensor excitation circuits. The device remains stable across this full load range without external compensation, as confirmed in the Electrical Characteristics table for MAX6129_50.
Does the MAX6129AEUK50+T require an external output capacitor for stability?
No, the MAX6129AEUK50+T does not require an external output capacitor for stability. Its internal compensation ensures stable operation with capacitive loads from 0 to 10µF when sourcing current and up to 0.4µF when sinking current. This eliminates BOM cost and PCB area - a key advantage documented in the Applications Information section and verified in typical operating characteristics (toc21–toc28).
What is the supply voltage range for the MAX6129AEUK50+T?
The MAX6129AEUK50+T operates from a supply voltage range of 5.2V to 12.6V, as specified in the ELECTRICAL CHARACTERISTICS-MAX6129_50 table. This wide input range accommodates aging Li-ion batteries and industrial 5V/12V rails while maintaining 5.000V output accuracy. Dropout is guaranteed at 200mV, meaning minimum functional input is 5.2V.
How does the temperature coefficient of the MAX6129AEUK50+T affect 16-bit ADC accuracy?
With a 40ppm/°C max temperature coefficient, the MAX6129AEUK50+T contributes ≤±0.02% output drift over a 100°C span (–40°C to +60°C), equating to <1.3 LSB error in a 16-bit 5V full-scale ADC. This meets typical system-level error budgets for portable instrumentation, as validated in Figure 1 (Temperature Coefficient vs. Operating Temperature Range for a 1LSB Maximum Error).
What is the turn-on settling time specification for the MAX6129AEUK50+T?
The MAX6129AEUK50+T settles to within 0.1% of its final 5.000V output value in 1.4ms maximum, as measured in the ELECTRICAL CHARACTERISTICS-MAX6129_50 table. This timing is confirmed in typical operating characteristic toc31 (TURN-ON TRANSIENT, VOUT = 5V), where settling occurs well within 1.4ms even under worst-case load and temperature conditions.
MAX6129AEUK50+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 4 mA
- Tolerance:
- ±0.4%
- Temperature Coefficient:
- 40ppm/°C
- Noise - 0.1Hz to 10Hz:
- 90µVp-p
- Noise - 10Hz to 10kHz:
- 245µVrms
- Voltage - Input:
- 5.2V ~ 12.6V
- Current - Supply:
- 10.5µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6129AEUK50+T FAQ
1.How can I place an order for MAX6129AEUK50+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6129AEUK50+T 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 MAX6129AEUK50+T reliable?
The price and inventory of MAX6129AEUK50+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6129AEUK50+T is usually 5 days.
3.What payment methods are accepted for MAX6129AEUK50+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6129AEUK50+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6129AEUK50+T?
MAX6129AEUK50+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6129AEUK50+T 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 MAX6129AEUK50+T?
For technical support, including MAX6129AEUK50+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6129AEUK50+T requirements.
6.How does Aetrix verify that MAX6129AEUK50+T is sourced from the original manufacturer or authorized distributors?
All MAX6129AEUK50+T 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 MAX6129AEUK50+T meets industry standards.
7.What is the process for return or replacement of MAX6129AEUK50+T?
All MAX6129AEUK50+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6129AEUK50+T, 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 MAX6129AEUK50+T part is unused and in its original packaging.
Return procedure for MAX6129AEUK50+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6129AEUK50+T 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…
