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Analog Devices Inc./Maxim Integrated MAX6034AEXR21+T
- Part No.:
- MAX6034AEXR21+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6034AEXR21+T.pdf
- Description:
- IC VREF SERIES 0.2% SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:814
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Product details
Overview
MAX6034AEXR21+T from Maxim Integrated is a precision, micropower, low-dropout series voltage reference in SC70-3 package, delivering 2.048V output with ±0.2% initial accuracy, 30ppm/°C max temperature coefficient, and 200mV max dropout at 1mA load. It operates from -40°C to +85°C and serves as a stable reference for high-resolution ADCs and battery-powered instrumentation.
For engineers reviewing the MAX6034AEXR21+T datasheet, MAX6034AEXR21+T pinout, MAX6034AEXR21+T application, or MAX6034AEXR21+T equivalent, this page provides verified electrical parameters, SC70-3 terminal mapping, real-world use cases in data acquisition and portable systems, and two validated alternative parts with documented functional trade-offs.
Technical Context
The MAX6034AEXR21+T uses a proprietary curvature-corrected bandgap core with laser-trimmed thin-film resistors to achieve <30ppm/°C TC and ±0.2% initial accuracy. Its series-mode architecture draws only 90µA quiescent current and maintains supply-current stability of ≤16µA/V across 2.5V–5.5V input range.
It delivers 1mA source / 200µA sink capability with ≤200mV dropout, supports 0–1µF capacitive loads without external compensation, and achieves 0.1% turn-on settling in 85µs (COUT = 50pF). No output capacitor is required for stability-critical for space-constrained PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.048V ±0.2% (±4.1mV) - enables 12-bit+ ADC accuracy over full temperature range |
| Temp Coefficient | ≤30ppm/°C - ensures ≤±0.52mV drift from -40°C to +85°C |
| Dropout Voltage | ≤200mV at 1mA load - allows operation from 2.248V supply, ideal for single-cell Li-ion or coin-cell systems |
| Supply Current | 90µA typical, ≤115µA max - ultra-low power for multi-year battery life in IoT sensors |
| Load Regulation | ≤1.0mV/mA sourcing - maintains reference stability under varying ADC bias or DAC load conditions |
| Noise (0.1–10Hz) | 45µVP-P - low enough for 16-bit SAR ADCs without additional filtering |
| Capacitive Load Range | 0 to 1µF - eliminates need for output capacitor, saving board area and BOM cost |
Pinout & Package
MAX6034AEXR21+T is housed in a 3-pin SC70-3 surface-mount package (2.0mm × 2.1mm × 0.9mm), optimized for high-density portable designs. The package is RoHS-compliant and moisture-sensitive level 1 (MSL1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Supply Voltage Input | Accepts 2.5V–5.5V input; requires no external series resistor (series-mode topology) |
| 2 (OUT) | Reference Voltage Output | Provides regulated 2.048V; stable with 0–1µF load capacitance; no external capacitor needed |
| 3 (GND) | Ground Reference | Low-impedance return path; must be connected directly to system ground plane for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small SC70-3 footprint | 2.0mm × 2.1mm area - saves >60% board space vs. SOT23-3 in wearables and medical patches |
| ±0.2% initial accuracy | Eliminates factory calibration for 12-bit systems; reduces test time and cost in volume production |
| No output capacitor required | Removes 1–2 passive components per channel, simplifying layout and improving reliability |
| 90µA supply current | Enables >10-year battery life in 20µA average-power sensor nodes using CR2032 cells |
| 200mV max dropout | Supports direct regulation from 2.25V sources (e.g., buck-boost outputs), avoiding extra LDO stages |
Applications
| Hand-Held Test Equipment | Data-Acquisition Systems |
|---|---|
Use Scenario: Portable multimeter measuring DC voltage with 16-bit resolution. IC Role / Device Role / Timing Role: Precision voltage reference for SAR ADC front-end, ensuring measurement repeatability across temperature. Use Value: 30ppm/°C TC and ±0.2% accuracy maintain ≤0.02% total error from -10°C to +50°C ambient. |
Use Scenario: Industrial 4–20mA loop-powered sensor transmitter with local ADC. IC Role / Device Role / Timing Role: Stable 2.048V reference for 12-bit ADC digitizing analog sensor output. Use Value: 90µA supply current and 200mV dropout enable operation within tight 3.3V loop budget while maintaining 0.5LSB linearity. |
| Battery-Operated Medical Sensors | Hard-Disk Drive Servo Control |
Use Scenario: Wearable ECG patch powered by single CR2032 cell (2.0–3.0V). IC Role / Device Role / Timing Role: Low-noise reference for low-power analog front-end amplifying microvolt-level biopotentials. Use Value: 45µVP-P (0.1–10Hz) noise and 0–1µF load stability allow direct connection to ADC without filtering, preserving signal integrity. |
Use Scenario: HDD head-positioning servo IC requiring precise analog feedback references. IC Role / Device Role / Timing Role: Stable 2.048V reference for DAC generating voice-coil motor drive signals. Use Value: 100ppm temperature hysteresis and 90ppm/1000hr long-term drift ensure consistent positioning accuracy over product lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR3420ARJZ-R7 | 2.048V, ±0.1% initial accuracy, 3 ppm/°C TC, 125µA supply current, SOT23-3 package | Higher accuracy and lower TC, but larger footprint and 38% higher supply current | Preferred when sub-0.1% system accuracy is required and board space permits SOT23-3 |
| REF3020AIDBZR | 2.048V, ±0.2% initial accuracy, 50ppm/°C TC, 50µA supply current, SOT23-3 package | Lower quiescent current but higher TC; not specified for 1µF capacitive load stability | Selected for ultra-low-power applications where TC tolerance >30ppm/°C is acceptable |
Compared with MAX6034AEXR21+T, ADR3420ARJZ-R7 offers superior accuracy and TC at the cost of higher supply current and larger package, while REF3020AIDBZR trades TC performance for lower IQ but lacks guaranteed 1µF load stability-making MAX6034AEXR21+T optimal for space-constrained, moderate-accuracy, high-stability designs.
Availability
MAX6034AEXR21+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, long-lifecycle support, and traceable sourcing.
Supply support for MAX6034AEXR21+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, communications, and consumer applications.
The MAX6034 family was designed specifically for precision, low-power, space-constrained systems-delivering high-accuracy voltage references with minimal external components and ultra-low quiescent current.
FAQ
What is the maximum input voltage rating for MAX6034AEXR21+T?
The absolute maximum input voltage for MAX6034AEXR21+T is +6.0V referenced to GND. Operation above this level risks permanent damage. The recommended operating range is 2.5V to 5.5V, with minimum input defined as VOUT + 200mV (i.e., ≥2.248V) to maintain regulation. Exceeding 5.5V violates the guaranteed line-regulation specification.
Does MAX6034AEXR21+T require an external output capacitor?
No, MAX6034AEXR21+T does not require an external output capacitor for stability-it is internally compensated and remains stable with load capacitance from 0 to 1µF. Adding a capacitor may improve transient response in step-load applications but is optional and unnecessary for basic regulation. This eliminates BOM cost and PCB area typically consumed by such capacitors.
What is the dropout voltage specification for MAX6034AEXR21+T at 1mA load?
The dropout voltage for MAX6034AEXR21+T is specified as ≤200mV at 1mA sourcing load current. This means the device maintains regulation as long as the input voltage remains ≥2.248V (2.048V + 0.2V). Dropout is measured as the minimum VIN–VOUT differential causing a 0.2% drop in output voltage from its nominal value at VIN = 5.0V.
Can MAX6034AEXR21+T sink current, and if so, how much?
Yes, MAX6034AEXR21+T can sink up to 200µA of load current. This capability supports applications where the reference output must drive a sinking load (e.g., certain DAC bias networks or current-steering circuits). When sinking 200µA, the output voltage change is ≤62mV/mA, meaning total deviation remains within ±12.4mV-well within its ±0.2% (±4.1mV) initial accuracy band at room temperature.
Is MAX6034AEXR21+T compatible with lead-free reflow soldering processes?
Yes, MAX6034AEXR21+T is RoHS-compliant and qualified for standard lead-free reflow soldering profiles, including peak temperatures up to +260°C for 10 seconds. Its SC70-3 package meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL1), meaning it can be stored indefinitely at ambient conditions without baking prior to assembly.
MAX6034AEXR21+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:
- ±0.2%
- Temperature Coefficient:
- 30ppm/°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
MAX6034AEXR21+T FAQ
1.How can I place an order for MAX6034AEXR21+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6034AEXR21+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 MAX6034AEXR21+T reliable?
The price and inventory of MAX6034AEXR21+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6034AEXR21+T is usually 5 days.
3.What payment methods are accepted for MAX6034AEXR21+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6034AEXR21+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6034AEXR21+T?
MAX6034AEXR21+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6034AEXR21+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 MAX6034AEXR21+T?
For technical support, including MAX6034AEXR21+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6034AEXR21+T requirements.
6.How does Aetrix verify that MAX6034AEXR21+T is sourced from the original manufacturer or authorized distributors?
All MAX6034AEXR21+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 MAX6034AEXR21+T meets industry standards.
7.What is the process for return or replacement of MAX6034AEXR21+T?
All MAX6034AEXR21+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6034AEXR21+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 MAX6034AEXR21+T part is unused and in its original packaging.
Return procedure for MAX6034AEXR21+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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