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Analog Devices Inc./Maxim Integrated MAX6034BEXR21+T
- Part No.:
- MAX6034BEXR21+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6034BEXR21+T.pdf
- Description:
- IC VREF SERIES 0.4% SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,925
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Product details
Overview
MAX6034BEXR21+T from Maxim Integrated is a precision, micropower, low-dropout series voltage reference delivering 2.048V output with ±0.4% initial accuracy, 75ppm/°C max temperature coefficient, and 200mV max dropout at 1mA load - designed for high-accuracy analog signal chains in space-constrained, battery-powered systems.
For engineers reviewing the MAX6034BEXR21+T datasheet, MAX6034BEXR21+T pinout, MAX6034BEXR21+T application, or MAX6034BEXR21+T equivalent, this page provides verified specifications, SC70-3 package details, real-world load/line regulation behavior, stability with 0–1µF capacitive loads, and selection guidance against comparable voltage references.
Technical Context
The MAX6034BEXR21+T uses a proprietary curvature-corrected bandgap core with laser-trimmed thin-film resistors to achieve tight initial accuracy and low thermal drift. Its series-mode architecture eliminates external biasing resistors and supports sourcing up to 1mA and sinking up to 200µA.
Internally compensated for stability across 0–1µF load capacitance, it operates from 2.5V to 5.5V input with supply current varying only ≤16µA/V - enabling predictable power budgeting in ultra-low-power designs without output capacitor dependency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.048V ±0.4% (max initial error = ±8.2mV at +25°C) |
| Temp Coefficient | 75ppm/°C max (output drift ≤±0.0155V over -40°C to +85°C) |
| Dropout Voltage | 200mV max at 1mA load (enables operation with VIN as low as 2.248V) |
| Supply Current | 85–115µA typical (90µA nominal; variation ≤16µA/V supports wide VIN range) |
| Load Regulation | 1.0mV/mA max sourcing (0–1mA), 62mV/mA max sinking (0–200µA) |
| Noise (0.1–10Hz) | 45µVP-P (critical for high-resolution ADC reference stability) |
| Capacitive Load Range | Stable with 0–1µF (no mandatory output capacitor saves PCB area) |
Pinout & Package
MAX6034BEXR21+T is housed in a 3-pin SC70 surface-mount package (2.0mm × 2.1mm × 0.9mm), optimized for space-constrained portable and industrial applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Supply Voltage Input | Accepts 2.5V–5.5V input; requires no external resistor; decoupling with 0.1µF ceramic recommended near pin |
| 2 - OUT | Reference Voltage Output | Delivers stable 2.048V; sources up to 1mA / sinks up to 200µA; stable with 0–1µF load capacitance |
| 3 - GND | Ground Reference | Low-impedance return path; must be connected directly to system ground plane for optimal noise performance |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small SC70-3 package | 2.0mm × 2.1mm footprint enables placement in dense sensor or data-acquisition modules |
| No output capacitor required | Eliminates BOM cost and board space for stability - critical in handheld medical or IoT edge devices |
| Supply-current independence | Quiescent current varies ≤16µA/V across full input range, simplifying battery-life modeling |
| Low dropout (200mV @ 1mA) | Enables direct regulation from single-cell Li-ion (3.0V min) or 2xAA alkaline (2.4V min) supplies |
| High PSRR (80dB @ 120Hz) | Maintains reference integrity in noisy mixed-signal environments like motor-control feedback paths |
Applications
| Hand-Held Test Equipment | Data-Acquisition Systems |
|---|---|
Use Scenario: Portable multimeter measuring DC voltage with 16-bit SAR ADC. IC Role / Device Role / Timing Role: Precision 2.048V reference for ADC full-scale calibration and ratiometric sensor excitation. Use Value: ±0.4% initial accuracy and 75ppm/°C drift ensure <1 LSB error over -40°C to +85°C without recalibration. |
Use Scenario: Industrial 4–20mA loop-powered transmitter with local analog sensing. IC Role / Device Role / Timing Role: Stable reference for current-loop DAC and sensor signal conditioning amplifier gain setting. Use Value: 90µA supply current and 200mV dropout allow operation from minimal loop power budget while maintaining 12-bit effective resolution. |
| Battery-Operated Medical Sensors | Hard-Disk Drive Servo Control |
Use Scenario: Wearable ECG front-end with ultra-low-power 14-bit delta-sigma ADC. IC Role / Device Role / Timing Role: Low-noise (45µVP-P) reference for analog front-end gain and ADC conversion. Use Value: No output capacitor requirement reduces component count and improves reliability in miniaturized flex PCB assemblies. |
Use Scenario: HDD voice-coil motor position feedback using high-speed 10-bit flash ADC. IC Role / Device Role / Timing Role: Fast-settling (85µs to 0.1%) reference for real-time servo sampling clock generation. Use Value: Turn-on settling time and supply-voltage independence ensure consistent timing margins during rapid power cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR3420BRJZ-R7 | ±0.1% initial accuracy, 30ppm/°C TC, 120µA IQ, SOT-23-3 package | Higher accuracy but higher quiescent current; requires 1µF output cap for stability | Select when tighter initial tolerance is prioritized over ultra-low IQ and board space |
| REF3020AIDBZR | ±0.2% initial accuracy, 50ppm/°C TC, 50µA IQ, SOT-23-3 package | Lower supply current but 250mV dropout; not stable with >10nF load capacitance | Select when lowest possible IQ dominates, and output capacitance can be strictly controlled |
Compared with ADR3420BRJZ-R7 and REF3020AIDBZR, the MAX6034BEXR21+T offers the best balance of moderate accuracy (±0.4%), ultra-low dropout (200mV), zero-output-capacitor operation, and SC70 size - making it uniquely suited for compact, battery-fed systems where layout area and input headroom are constrained.
Availability
MAX6034BEXR21+T is available at Aetrix Electronics and suitable for hand-held test equipment, battery-operated medical sensors, and industrial data-acquisition systems requiring stable component supply with guaranteed long-term continuity.
Supply support for MAX6034BEXR21+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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, automotive, and communications markets.
The MAX6034 family was designed specifically for micropower, low-dropout, precision voltage referencing in space- and energy-constrained applications - emphasizing SC70 integration, capacitor-free stability, and extended temperature operation.
FAQ
What is the maximum load current the MAX6034BEXR21+T can source and sink?
The MAX6034BEXR21+T can source up to 1mA and sink up to 200µA while maintaining specified output voltage accuracy and dropout performance. This dual-direction capability supports both active pull-up and pull-down configurations in precision analog circuits, such as biasing op-amp inputs or driving low-power DAC references. Exceeding these limits may cause excessive dropout or output deviation beyond datasheet tolerances.
Does the MAX6034BEXR21+T require an external output capacitor?
No, the MAX6034BEXR21+T is internally compensated and stable with load capacitance from 0 to 1µF - eliminating the need for an external output capacitor. This feature reduces BOM count and PCB area, which is especially valuable in ultra-compact designs like wearable sensors or miniature data loggers. Adding a capacitor (e.g., 100nF) may improve transient response but is never mandatory for stability.
What is the input voltage range for the MAX6034BEXR21+T?
The MAX6034BEXR21+T operates with an input voltage range of 2.5V to 5.5V. For the 2.048V output version, the minimum input is defined by the dropout specification: VIN ≥ VOUT + 200mV = 2.248V, but the device is only guaranteed over 2.5V–5.5V per datasheet testing. Operation below 2.5V may yield uncharacterized performance and is not recommended for production designs.
How does the MAX6034BEXR21+T compare to the MAX6034AEXR21+T?
The MAX6034BEXR21+T has ±0.4% initial accuracy and 75ppm/°C max temperature coefficient, whereas the MAX6034AEXR21+T offers tighter ±0.2% accuracy and 30ppm/°C TC. Both share identical SC70-3 packaging, pinout, dropout voltage, supply current, and capacitive-load stability. The "B" grade trades precision for cost-effectiveness in applications where moderate accuracy suffices - such as non-critical sensor biasing or mid-resolution ADC references.
Is the MAX6034BEXR21+T suitable for automotive applications?
The MAX6034BEXR21+T is rated for –40°C to +85°C operation and meets industrial temperature requirements, but it is not AEC-Q200 qualified or specified for automotive under-hood use. It is appropriate for automotive infotainment, telematics, or cabin-sensing modules operating within its temperature and reliability envelope - however, mission-critical powertrain or ADAS applications require automotive-grade qualified alternatives with extended temperature and stress-test validation.
MAX6034BEXR21+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SC-70, SOT-323
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.048V
- Voltage - Output (Max):
- -
- Current - Output:
- 1 mA
- Tolerance:
- ±0.4%
- Temperature Coefficient:
- 75ppm/°C
- Noise - 0.1Hz to 10Hz:
- 45µVp-p
- Noise - 10Hz to 10kHz:
- 46µVrms
- Voltage - Input:
- 2.5V ~ 5.5V
- Current - Supply:
- 115µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
MAX6034BEXR21+T FAQ
1.How can I place an order for MAX6034BEXR21+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6034BEXR21+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 MAX6034BEXR21+T reliable?
The price and inventory of MAX6034BEXR21+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6034BEXR21+T is usually 5 days.
3.What payment methods are accepted for MAX6034BEXR21+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6034BEXR21+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6034BEXR21+T?
MAX6034BEXR21+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6034BEXR21+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 MAX6034BEXR21+T?
For technical support, including MAX6034BEXR21+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6034BEXR21+T requirements.
6.How does Aetrix verify that MAX6034BEXR21+T is sourced from the original manufacturer or authorized distributors?
All MAX6034BEXR21+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 MAX6034BEXR21+T meets industry standards.
7.What is the process for return or replacement of MAX6034BEXR21+T?
All MAX6034BEXR21+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6034BEXR21+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 MAX6034BEXR21+T part is unused and in its original packaging.
Return procedure for MAX6034BEXR21+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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