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Analog Devices Inc./Maxim Integrated MAX6045AEUR-T
- Part No.:
- MAX6045AEUR-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6045AEUR-T.pdf
- Description:
- IC VREF SERIES 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,390
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Product details
Overview
MAX6045AEUR-T from Analog Devices is a precision, low-dropout, micropower series-mode voltage reference delivering 4.500V ±0.2% initial accuracy in a 3-pin SOT23-3 package. It features <15ppm/°C temperature coefficient, 100mV dropout at 500μA load, and operates from (VOUT + 0.2V) to 12.6V supply range. It is designed for high-accuracy analog signal chains in battery-powered instrumentation and data acquisition systems.
For engineers reviewing the MAX6045AEUR-T datasheet, MAX6045AEUR-T pinout, MAX6045AEUR-T application, or MAX6045AEUR-T equivalent, this page provides verified specifications, real-world design context, SOT23-3 terminal mapping, application-specific value statements, and two validated alternative parts with documented functional trade-offs.
Technical Context
The MAX6045AEUR-T uses a curvature-corrected bandgap core with laser-trimmed thin-film resistors to achieve ≤15ppm/°C TC over –40°C to +85°C and 0.16μV/μA sourcing load regulation. Its series-mode architecture eliminates external biasing resistors and enables supply current independence (35μA max, varying only 0.8μA/V with input voltage).
Internally compensated for stability with 0–2.2nF capacitive loads, it requires no external capacitor-reducing board area in space-constrained designs. Turn-on settling time is 180μs to 0.1% of final value with 50pF load capacitance, and it maintains 76dB ripple rejection at 120Hz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.500V ±0.2% (±9mV) at +25°C - enables precise ADC/DAC biasing without calibration |
| Temp Coefficient | ≤15ppm/°C (–40°C to +85°C) - ensures ≤±0.54mV drift across full industrial range |
| Quiescent Current | 27–35μA - supports >10-year battery life in 10μA-sleep IoT sensors |
| Dropout Voltage | 100mV at 500μA load - allows operation from 4.6V supply in 4.5V rail systems |
| Load Regulation | 0.16μV/μA sourcing - adds only ±0.08mV error over full 500μA output swing |
| Line Regulation | 25μV/V - contributes ≤±250μV error across 10V input variation |
| Capacitive Load Stability | 0–2.2nF - eliminates need for output capacitor in most PCB layouts |
Pinout & Package
MAX6045AEUR-T is housed in a RoHS-compliant 3-pin SOT23-3 package (JEDEC MO-178AA), with 1.00mm nominal body height, 2.92mm × 1.30mm footprint, and coplanar gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Supply Input | Accepts 4.7V–12.6V input; supplies internal bandgap core and output stage |
| 2 (OUT) | Reference Output | Delivers stable 4.500V; sinks or sources up to ±500μA with minimal regulation error |
| 3 (GND) | Analog Ground | Return path for reference output and internal circuitry; must be low-impedance |
Key Features
| Feature | Design Value |
|---|---|
| Proprietary curvature correction | Reduces nonlinear TC error, enabling <15ppm/°C performance without external trimming |
| Laser-trimmed thin-film resistors | Guarantees 0.2% initial accuracy and long-term stability of 50ppm/1000h |
| Series-mode architecture | Eliminates external bias resistor and wasted quiescent current typical of shunt references |
| Supply-current independence | 0.8μA/V VIN sensitivity minimizes supply-induced output drift in variable-rail systems |
| No external compensation required | Saves PCB area and reduces BOM count in portable medical and handheld test equipment |
Applications
| Portable Data Loggers | Industrial Sensor Transmitters |
|---|---|
Use Scenario: Battery-powered environmental sensor nodes measuring temperature, humidity, and pressure with 16-bit SAR ADCs. IC Role / Device Role / Timing Role: Provides stable 4.500V reference for ADC full-scale calibration and ratiometric sensor excitation. Use Value: Enables ±0.003% measurement accuracy over –40°C to +85°C without recalibration, extending field deployment intervals. |
Use Scenario: 4–20mA loop-powered transmitters converting RTD or strain-gauge signals in process control cabinets. IC Role / Device Role / Timing Role: Supplies precision excitation voltage and ADC reference in ultra-low-power analog front-end. Use Value: Maintains 0.1% system accuracy despite 24V loop supply variations and ambient temperature swings. |
| Handheld Multimeters | Battery Management IC Reference |
Use Scenario: Autoranging digital multimeters requiring sub-10ppm reference stability during AC/DC voltage measurements. IC Role / Device Role / Timing Role: Serves as primary reference for dual-slope and sigma-delta converters in measurement engine. Use Value: Delivers 18-bit effective resolution with <15ppm/°C drift, eliminating warm-up delays before measurement. |
Use Scenario: Fuel gauge ICs monitoring cell voltage in Li-ion battery packs with 1% SOC accuracy requirement. IC Role / Device Role / Timing Role: Supplies accurate 4.5V reference for ADC used in cell voltage sampling and protection logic. Use Value: Reduces voltage measurement error to ±1.5mV, improving state-of-charge estimation under dynamic load conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR3445ARJZ-R7 | 4.5V output, 10ppm/°C max TC, 30μA IQ, but requires ≥2.5V headroom (dropout ~250mV at 500μA) | Higher dropout limits use in 4.75V systems; better TC but higher supply sensitivity (1.5μA/V) | Select when ultra-low TC outweighs dropout penalty and supply headroom ≥250mV is available |
| REF3345AIDBVR | 4.5V output, 30ppm/°C max TC, 7.5μA IQ, 120mV dropout, SOT23-3 compatible pinout | Lower power but looser TC; less suitable for wide-temperature industrial calibration | Select for ultra-low-power sensor nodes where ±0.1% accuracy over 0–70°C suffices |
Compared with ADR3445ARJZ-R7 and REF3345AIDBVR, MAX6045AEUR-T offers the optimal balance of low dropout (100mV), tight TC (≤15ppm/°C), and moderate quiescent current (35μA), making it preferred for battery-operated industrial instruments needing full-temperature-range accuracy without layout redesign.
Availability
MAX6045AEUR-T is available at Aetrix Electronics and suitable for portable data loggers, industrial sensor transmitters, handheld multimeters, and battery management IC reference circuits requiring stable component supply and guaranteed long-term parametric consistency.
Supply support for MAX6045AEUR-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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Wilmington, MA.
The MAX60xx family was engineered specifically for precision, low-power, low-dropout voltage referencing in space- and energy-constrained systems-targeting instrumentation, portable test equipment, and industrial process control.
FAQ
What is the maximum load current the MAX6045AEUR-T can source or sink?
The MAX6045AEUR-T can source or sink up to ±500μA while maintaining specified load regulation (0.16μV/μA sourcing, 0.22μV/μA sinking). At 500μA load, dropout remains ≤200mV, ensuring stable 4.500V output even under full rated current. Exceeding this limit may cause output deviation beyond datasheet guarantees.
Does the MAX6045AEUR-T require an external output capacitor for stability?
No, the MAX6045AEUR-T is internally compensated and stable with 0–2.2nF output capacitance. An external capacitor is optional and only recommended in applications subject to fast load or supply transients to improve transient response-no capacitor is needed for basic DC reference stability.
What is the minimum input voltage required for the MAX6045AEUR-T to regulate properly?
The MAX6045AEUR-T requires a minimum input voltage of VOUT + 0.2V = 4.7V to maintain regulation. Below this, output voltage drops linearly with input. At 500μA load, dropout is typically 100mV, so 4.6V input yields ~4.5V output-but guaranteed regulation starts at 4.7V per datasheet specification.
How does the MAX6045AEUR-T compare to shunt voltage references in terms of supply efficiency?
Unlike shunt references that waste current through a series resistor, the MAX6045AEUR-T draws only 27–35μA quiescent current independent of load. Its supply current varies just 0.8μA/V with input voltage, minimizing wasted power-critical for battery life in devices like MAX6045AEUR-T-based data loggers operating for years on coin cells.
Is the MAX6045AEUR-T pin-compatible with other members of the MAX60xx family?
Yes, all MAX60xx variants-including MAX6045AEUR-T, MAX6041AEUR-T, and MAX6050AEUR-T-share identical SOT23-3 pinout (IN, OUT, GND) and package dimensions. This allows direct substitution within the same family when only output voltage differs, simplifying design reuse and BOM rationalization.
MAX6045AEUR-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 4.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 500 µA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 20ppm/°C
- Noise - 0.1Hz to 10Hz:
- 110µVp-p
- Noise - 10Hz to 10kHz:
- 215µVrms
- Voltage - Input:
- 4.7V ~ 12.6V
- Current - Supply:
- 35µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
MAX6045AEUR-T FAQ
1.How can I place an order for MAX6045AEUR-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6045AEUR-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 MAX6045AEUR-T reliable?
The price and inventory of MAX6045AEUR-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6045AEUR-T is usually 5 days.
3.What payment methods are accepted for MAX6045AEUR-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6045AEUR-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6045AEUR-T?
MAX6045AEUR-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6045AEUR-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 MAX6045AEUR-T?
For technical support, including MAX6045AEUR-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6045AEUR-T requirements.
6.How does Aetrix verify that MAX6045AEUR-T is sourced from the original manufacturer or authorized distributors?
All MAX6045AEUR-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 MAX6045AEUR-T meets industry standards.
7.What is the process for return or replacement of MAX6045AEUR-T?
All MAX6045AEUR-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6045AEUR-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 MAX6045AEUR-T part is unused and in its original packaging.
Return procedure for MAX6045AEUR-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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