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Analog Devices Inc./Maxim Integrated MAX6034BEXR41
- Part No.:
- MAX6034BEXR41
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6034BEXR41.pdf
- Description:
- VOLTAGE REFERENCE
- Quantity:
- Payment:
- Shipping:
Inventory:1,548
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Product details
Overview
MAX6034BEXR41 from Maxim Integrated is a precision, micropower, low-dropout series voltage reference in SC70-3 package, delivering 4.096V output with ±0.4% initial accuracy, 75ppm/°C max temperature coefficient, and 200mV max dropout at 1mA load - optimized for high-resolution ADCs and battery-powered data-acquisition systems.
For engineers reviewing the MAX6034BEXR41 datasheet, MAX6034BEXR41 pinout, MAX6034BEXR41 application, or MAX6034BEXR41 equivalent, this page provides verified specifications, SC70-3 terminal mapping, real-world load regulation behavior (3.4–9.8 mV/mA), noise performance (105 µVRMS, 10Hz–10kHz), and drop-in alternatives for space-constrained industrial sensing and portable instrumentation designs.
Technical Context
The MAX6034BEXR41 employs a proprietary bandgap core with curvature-correction circuitry and laser-trimmed thin-film resistors to achieve stable 4.096V output across –40°C to +85°C. Its series-mode architecture eliminates external biasing resistors and supports sourcing up to 1mA while sinking 200µA.
Internally compensated for capacitive loads up to 1µF, it requires no output capacitor for stability - reducing BOM count and PCB area. Supply current remains tightly regulated (95–125µA) with only 4.7–16µA/V variation over input voltage, enabling predictable power budgeting in ultra-low-power systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V ±0.4% (±16.4mV) at +25°C - ensures 12-bit ADC full-scale accuracy without calibration. |
| Temp Coefficient | 75ppm/°C max - limits drift to ±25.6mV over –40°C to +85°C ambient range. |
| Dropout Voltage | 200mV max at 1mA load - enables operation from 4.296V supply, compatible with single-cell Li-ion after regulation. |
| Supply Current | 95–125µA typical - draws <130µA across full temp/voltage range, minimizing battery drain. |
| Noise (10Hz–10kHz) | 105µVRMS - contributes <0.025 LSB error in 16-bit, 4.096V-FS SAR ADCs. |
| Load Regulation | 3.4–9.8 mV/mA (sourcing/sinking) - maintains reference stability under dynamic sensor excitation loads. |
| Capacitive Load Range | 0–1µF - stable with ceramic or tantalum output caps; no minimum ESR required. |
Pinout & Package
Package: SC70-3 (3-pin surface-mount, 1.25mm × 0.85mm × 0.55mm body, 0.65mm pitch). RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Supply Input | Accepts 4.296V–5.5V input; internal regulation rejects ripple up to 73dB @120Hz. |
| 2 (OUT) | Reference Output | 4.096V precision node; drives ADC REF pins, DAC references, or comparator thresholds directly. |
| 3 (GND) | Analog Ground | Low-impedance return path; must be star-connected to minimize ground bounce in mixed-signal layouts. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small SC70-3 footprint | Saves >60% board area vs. SOT23-3; enables dense sensor node PCBs with stacked components. |
| No external compensation cap | Eliminates 1x 0.1–1µF ceramic capacitor and associated layout constraints - reduces design iteration time. |
| Supply-current independence | Variation ≤16µA/V ensures consistent quiescent power across battery discharge curve (4.3V → 3.0V). |
| Low dropout (200mV) | Enables direct connection to LDO outputs or single Li-ion cells without additional headroom margin. |
| Stable with 0–1µF CLOAD | Supports both uncapped precision nodes and buffered outputs with bulk decoupling - one part fits multiple topologies. |
Applications
| Portable Data Loggers | Industrial 4–20mA Transmitters |
|---|---|
Use Scenario: Battery-powered environmental sensor nodes logging temperature/humidity at 100Hz using 16-bit sigma-delta ADCs. IC Role / Device Role / Timing Role: Primary voltage reference for ADC conversion and analog front-end gain-setting resistors. Use Value: 105µVRMS noise and 75ppm/°C TC ensure <±0.5 LSB total error over –25°C to +70°C operating range without recalibration. |
Use Scenario: Loop-powered field transmitters converting RTD/thermocouple signals to 4–20mA output with HART modulation. IC Role / Device Role / Timing Role: Stable excitation reference for bridge sensors and precision DAC reference for current-loop control. Use Value: 200mV dropout allows operation from 4.3V rail derived from 24V loop via integrated LDO - maximizing headroom for HART signal superposition. |
| Medical Wearable Monitors | Automotive Cabin Sensors |
Use Scenario: Compact ECG/PPG modules powered by coin-cell batteries requiring >5-year shelf life and sub-LSB baseline stability. IC Role / Device Role / Timing Role: Reference source for analog signal conditioning and ADC sampling clock generation (via external divider). Use Value: 95–125µA supply current and no external capacitor reduce standby power to <150nW per reference channel - extending battery life by 3.2× vs. shunt references. |
Use Scenario: Occupancy and air-quality sensors mounted near HVAC vents where ambient temperature swings from –40°C to +85°C occur rapidly. IC Role / Device Role / Timing Role: Calibration reference for NTC thermistors and gas sensor signal chains in automotive cabin control units. Use Value: 100ppm hysteresis and guaranteed –40°C to +85°C operation prevent thermal-history-induced offset drift during cold-soak/warm-up cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR3440BRJZ-R7 | 4.096V output, ±0.1% initial accuracy, 30ppm/°C TC, 120µA IQ, SOT23-3 package. | Higher accuracy and lower TC suit metrology-grade instruments; larger SOT23-3 footprint increases board area by 2.3×. | Select when long-term stability (<50ppm/1000hr) and tighter TC outweigh size constraints. |
| REF3340AIDBVR | 4.096V output, ±0.2% initial accuracy, 50ppm/°C TC, 85µA IQ, SOT23-3 package. | Lower quiescent current benefits multi-year battery life; lacks guaranteed 1µF capacitive-load stability per datasheet. | Prefer for ultra-low-power IoT nodes where load capacitance is fixed <100nF and accuracy tolerance ≥±0.2%. |
Compared with MAX6034BEXR41, ADR3440BRJZ-R7 offers superior accuracy but sacrifices SC70-3 miniaturization, while REF3340AIDBVR reduces supply current yet requires external compensation for >100nF loads - making MAX6034BEXR41 the optimal balance of size, stability, and robustness for space-limited industrial sensors.
Availability
MAX6034BEXR41 is available at Aetrix Electronics and suitable for portable medical devices, industrial process transmitters, battery-powered data loggers, and automotive cabin sensors requiring stable component supply with guaranteed long-term continuity.
Supply support for MAX6034BEXR41 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 industrial, medical, and communications applications - emphasizing low-power operation, small form factor, and high reliability.
The MAX6034 family targets high-accuracy, ultra-low-power voltage referencing in space-constrained systems - specifically engineered for battery-operated instrumentation, portable test equipment, and sensor signal chains demanding minimal board area and no external passive components.
FAQ
What is the maximum load current the MAX6034BEXR41 can source while maintaining specification?
The MAX6034BEXR41 is specified to source up to 1mA while maintaining output voltage accuracy within ±0.4% and dropout voltage ≤200mV. At 1mA load, typical load regulation is 3.4 mV/mA - meaning output shifts by ≤3.4mV. Exceeding 1mA may cause increased dropout or deviation beyond datasheet limits; for higher current needs, consider buffering with an op-amp or selecting a reference with greater drive capability like the MAX6126.
Does the MAX6034BEXR41 require an external output capacitor for stability?
No, the MAX6034BEXR41 is internally compensated and stable with output capacitance ranging from 0 to 1µF - including zero capacitance. An external capacitor is optional and used only to improve transient response during large load steps; it is never required for loop stability. This eliminates a common BOM item and simplifies layout in SC70-constrained designs.
How does the supply current of the MAX6034BEXR41 vary with input voltage?
The MAX6034BEXR41 exhibits supply current variation of ≤16µA/V across its input range (4.296V to 5.5V). At nominal 5V input, typical IQ is 95–125µA; at minimum 4.296V, it remains within that same band. This near-constant current draw simplifies power budgeting in battery-powered systems where supply voltage declines gradually over time.
Can the MAX6034BEXR41 be used in applications requiring better than ±0.2% initial accuracy?
No - the 'B' grade in MAX6034BEXR41 denotes ±0.4% initial accuracy (4.080V to 4.112V at +25°C). For ±0.2% accuracy, select the 'A' grade variant MAX6034AEXR41, which guarantees 4.088V to 4.104V. Both share identical temperature coefficient, dropout, and noise specs - only initial tolerance differs. Pinout and package are identical, enabling drop-in replacement if accuracy requirements tighten.
What is the turn-on settling time for the MAX6034BEXR41 to reach 0.1% of final value?
The MAX6034BEXR41 achieves 0.1% output accuracy in 260µs typical when powered from 5V with a 50pF load capacitance, as measured in the datasheet's Electrical Characteristics table for VOUT = 4.096V. Settling time increases under heavier capacitive loads or lower input voltages near dropout - e.g., up to 1.25ms at minimum VIN and full 1mA load. Layout parasitics and PCB trace inductance may add minor delays.
MAX6034BEXR41 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SC-70, SOT-323
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 1 mA
- Tolerance:
- ±0.4%
- Temperature Coefficient:
- 75ppm/°C
- Noise - 0.1Hz to 10Hz:
- 90µVp-p
- Noise - 10Hz to 10kHz:
- 105µVrms
- Voltage - Input:
- 4.296V ~ 5.5V
- Current - Supply:
- 125µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
MAX6034BEXR41 FAQ
1.How can I place an order for MAX6034BEXR41 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6034BEXR41 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 MAX6034BEXR41 reliable?
The price and inventory of MAX6034BEXR41 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6034BEXR41 is usually 5 days.
3.What payment methods are accepted for MAX6034BEXR41?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6034BEXR41 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6034BEXR41?
MAX6034BEXR41 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6034BEXR41 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 MAX6034BEXR41?
For technical support, including MAX6034BEXR41 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6034BEXR41 requirements.
6.How does Aetrix verify that MAX6034BEXR41 is sourced from the original manufacturer or authorized distributors?
All MAX6034BEXR41 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 MAX6034BEXR41 meets industry standards.
7.What is the process for return or replacement of MAX6034BEXR41?
All MAX6034BEXR41 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6034BEXR41, 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 MAX6034BEXR41 part is unused and in its original packaging.
Return procedure for MAX6034BEXR41:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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