My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6037BAUK12-T
- Part No.:
- MAX6037BAUK12-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6037BAUK12-T.pdf
- Description:
- LOW-POWER, FIXED REFERENCE
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6037BAUK12-T from Maxim Integrated is a low-dropout, micropower series voltage reference with fixed 1.25V output, ±0.3% initial accuracy, 50ppm/°C max temperature coefficient, and active-low shutdown (≤500nA). It operates from 2.5V to 5.5V supply, delivers ±5mA load current, and is used in precision ADC/DAC biasing, portable medical sensors, and automotive sensor signal conditioning.
For engineers reviewing the MAX6037BAUK12-T datasheet, MAX6037BAUK12-T pinout, MAX6037BAUK12-T application, or MAX6037BAUK12-T equivalent, key selection criteria include its 1.25V reference stability over -40°C to +125°C, 100mV dropout at 1mA, 275µA max quiescent current, and SOT23-5 package compatibility with space-constrained battery-powered designs.
Technical Context
The MAX6037BAUK12-T is a series-mode bandgap voltage reference with internal trimming for fixed 1.25V output. Its shutdown circuitry uses an active-low logic input (VENL ≤ 0.7V) to reduce supply current to ≤500nA while maintaining high-impedance output (ZOUT > 125kΩ when disabled).
It features low dynamic error: 0.008%/mA load regulation (sourcing), 0.025%/mA (sinking), and 0.0006%/V line regulation across 2.5V–5.5V input. Output remains stable with capacitive loads from 0.02µF to 1µF, supporting direct interface with SAR ADC sample capacitors and low-ESR ceramic bypassing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.25V ±0.3% at +25°C - ensures accurate full-scale calibration for 12-bit systems requiring ≤3.75mV absolute error |
| Tempco | 50ppm/°C max - contributes ≤0.625mV drift over -40°C to +125°C, suitable for automotive under-hood applications |
| Dropout Voltage | 100mV max at 1mA - enables operation from 1.35V supply, critical for single-cell Li-ion or coin-cell powered devices |
| Quiescent Current | 275µA max - supports >1-year battery life in 10µA average-power IoT sensor nodes |
| Shutdown Current | 500nA max - reduces standby power by 550× vs active mode, enabling ultra-low-power wake-on-event architectures |
| Load Drive | ±5mA sourcing/sinking - directly drives ADC reference inputs, op-amp feedback networks, and small MOSFET gates without buffering |
| Capacitive Stability | 0.02µF to 1µF - compatible with standard 0.1µF ceramic decoupling and eliminates need for external compensation |
Pinout & Package
The MAX6037BAUK12-T is housed in a 5-pin SOT23-5 package (U5-2 code), with 1.3mm × 2.9mm footprint and 1.45mm height, optimized for automated placement and thermal performance in dense PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (I.C.) | Internally connected | No external connection required; unused pin for fixed-output variants only |
| 2 (GND) | Ground reference | Primary return path for reference output and supply current; must be low-impedance to minimize noise coupling |
| 3 (SHDN) | Active-low enable control | Pull ≤0.7V to disable output and reduce supply current to ≤500nA; tie to IN for always-on operation |
| 4 (IN) | Supply input | Accepts 2.5V–5.5V; requires 0.1µF ceramic bypass to GND close to pin for PSRR optimization |
| 5 (OUT) | Reference voltage output | Delivers stable 1.25V; connect 0.02µF–1µF capacitor to GND for transient stability and noise filtering |
Key Features
| Feature | Design Value |
|---|---|
| Automotive-grade temp range | Specified from -40°C to +125°C - qualified for engine control modules, ADAS camera power rails, and transmission sensors |
| Low-output impedance | Typical 0.2Ω output resistance - minimizes voltage shift under dynamic load steps, critical for high-speed data acquisition |
| Fast turn-on settling | 75µs to 0.1% of final value - enables rapid power cycling in duty-cycled sensor systems without reference stabilization delay |
| High PSRR | ≥60dB at 1kHz - rejects switching regulator ripple and digital supply noise before entering precision analog signal chains |
| Thermal hysteresis | 485ppm max - ensures repeatable reference voltage after thermal cycling, essential for factory calibration repeatability |
Applications
| Portable Medical Sensors | Precision Data Acquisition |
|---|---|
Use Scenario: Battery-powered ECG front-end measuring microvolt-level cardiac signals with 16-bit ADC resolution. IC Role / Device Role / Timing Role: Provides stable 1.25V reference for ADC full-scale range and op-amp biasing in analog front-end. Use Value: ±0.3% initial accuracy and 50ppm/°C tempco ensure <0.5 LSB error over temperature, meeting IEC 60601 clinical accuracy requirements. | Use Scenario: Industrial PLC analog input module digitizing 4–20mA sensor outputs with 0.1% system accuracy. IC Role / Device Role / Timing Role: Supplies precise reference for dual-slope or sigma-delta ADCs and programmable gain amplifier offset calibration. Use Value: 275µA quiescent current enables low-power design; 100mV dropout allows use with 1.35V LDO supplies, reducing thermal load. |
| Automotive Cabin Sensors | Wireless Sensor Nodes |
Use Scenario: Occupant detection system using capacitive sensing ICs requiring stable bias voltage in vehicle cabin (-40°C to +85°C). IC Role / Device Role / Timing Role: Delivers 1.25V reference for capacitance-to-digital converter (CDC) excitation and measurement circuits. Use Value: -40°C to +125°C qualification and 50ppm/°C tempco guarantee consistent sensitivity calibration across environmental extremes. | Use Scenario: LoRaWAN soil moisture node powered by CR2032 coin cell, sampling every 15 minutes. IC Role / Device Role / Timing Role: Provides reference for low-power ADC during brief active periods; shut down between measurements. Use Value: 500nA shutdown current extends battery life to >5 years; fast 75µs wake-up avoids timing overhead in duty-cycled operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR3412ARJZ-R7 | 1.2V output, ±0.1% initial accuracy, 30ppm/°C, 180µA quiescent current, no shutdown | Lacks shutdown function; higher accuracy but lower output voltage limits full-scale ADC utilization | Select when highest initial accuracy is prioritized over power gating and 1.25V output is required |
| REF3012AIDBZR | 1.2V output, ±0.2% initial accuracy, 50ppm/°C, 50µA quiescent current, no shutdown | Lower quiescent current but no shutdown; 1.2V output incompatible with 1.25V system references | Choose for ultra-low-quiescent applications where shutdown is unnecessary and 1.2V suffices |
Compared with ADR3412ARJZ-R7 and REF3012AIDBZR, the MAX6037BAUK12-T uniquely combines 1.25V output, integrated shutdown, and automotive temperature range-enabling compact, low-power, high-accuracy reference solutions where system-level power management and exact voltage matching are mandatory.
Availability
MAX6037BAUK12-T is available at Aetrix Electronics and suitable for portable medical sensors, precision data acquisition modules, and automotive cabin sensors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6037BAUK12-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, mixed-signal, and power management ICs for demanding industrial, automotive, and medical applications.
The MAX6037 family targets battery-powered and automotive systems requiring micropower, high-accuracy voltage references with shutdown capability and extended temperature operation.
FAQ
What is the output voltage tolerance of the MAX6037BAUK12-T over temperature?
The MAX6037BAUK12-T has a guaranteed initial accuracy of ±0.3% at +25°C and a maximum temperature coefficient of 50ppm/°C. Over the full -40°C to +125°C range, total output variation is bounded by initial error plus tempco-induced drift, resulting in worst-case deviation of approximately ±0.5% relative to nominal 1.25V. This is confirmed in the Electrical Characteristics table for MAX6037B_12 under "Output Voltage" and "Output-Voltage Temperature Coefficient" parameters.
Can the MAX6037BAUK12-T drive a 1000pF capacitive load without oscillation?
Yes, the MAX6037BAUK12-T is specified for stable operation with output capacitance from 0.02µF to 1µF (20nF to 1000nF), explicitly covering 1000pF. The device's internal compensation ensures phase margin remains sufficient across this range, eliminating need for external series resistance or isolation components in typical layout configurations.
What is the minimum input voltage required for the MAX6037BAUK12-T to regulate at 1.25V?
The minimum input voltage for the MAX6037BAUK12-T is 2.5V, as stated in the Absolute Maximum Ratings and Electrical Characteristics tables. This is independent of output voltage due to its series architecture and internal headroom requirements. At 1mA load, dropout is ≤100mV, so VIN ≥ 1.35V would theoretically suffice-but the datasheet guarantees regulation only above 2.5V, and operation below that is not characterized or recommended.
How does the shutdown functionality affect output impedance in the MAX6037BAUK12-T?
When the MAX6037BAUK12-T is in shutdown (SHDN ≤ 0.7V), the output stage is disabled and the OUT pin presents a high-impedance state of ≥125kΩ, as specified in the Electrical Characteristics table under "Output Impedance when Disabled". This prevents loading of downstream circuits and avoids unintended current paths during sleep modes, preserving system-level power integrity.
Is the MAX6037BAUK12-T pin-compatible with other members of the MAX6037 family?
Yes, all MAX6037 variants-including MAX6037BAUK12-T, MAX6037AAUK12+T, and MAX6037CAUK12+T-share identical 5-pin SOT23-5 (U5-2) packaging and pinout. The only differences are initial accuracy (0.2%/0.3%/0.5%), temperature coefficient (25ppm/°C or 50ppm/°C), and top-mark codes (AEIV/AEIW/AEIX). No PCB redesign is needed when upgrading or downgrading within the same output voltage grade.
MAX6037BAUK12-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 1.25V
- Voltage - Output (Max):
- -
- Current - Output:
- 5 mA
- Tolerance:
- ±0.3%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- 6µVp-p
- Noise - 10Hz to 10kHz:
- 15µVrms
- Voltage - Input:
- 2.5V ~ 5.5V
- Current - Supply:
- 275µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6037BAUK12-T FAQ
1.How can I place an order for MAX6037BAUK12-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6037BAUK12-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 MAX6037BAUK12-T reliable?
The price and inventory of MAX6037BAUK12-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6037BAUK12-T is usually 5 days.
3.What payment methods are accepted for MAX6037BAUK12-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6037BAUK12-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6037BAUK12-T?
MAX6037BAUK12-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6037BAUK12-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 MAX6037BAUK12-T?
For technical support, including MAX6037BAUK12-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6037BAUK12-T requirements.
6.How does Aetrix verify that MAX6037BAUK12-T is sourced from the original manufacturer or authorized distributors?
All MAX6037BAUK12-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 MAX6037BAUK12-T meets industry standards.
7.What is the process for return or replacement of MAX6037BAUK12-T?
All MAX6037BAUK12-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6037BAUK12-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 MAX6037BAUK12-T part is unused and in its original packaging.
Return procedure for MAX6037BAUK12-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6037BAUK12-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…
