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Analog Devices Inc./Maxim Integrated MAX6072AAUB50+
- Part No.:
- MAX6072AAUB50+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX6072AAUB50+.pdf
- Description:
- IC VREF SERIES 0.05% 10UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:165
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Product details
Overview
The MAX6072AAUB50+ from Maxim Integrated is a dual-output precision series voltage reference IC delivering +5.000V (VREF) and +2.500V (VREF/2) outputs with 0.05% initial accuracy, 6ppm/°C max temperature drift over -40°C to +125°C, and 2ppm peak-to-peak 1/f noise. Each output sources/sinks ±10mA with independent force/sense terminals and separate enable control, making it ideal for high-accuracy ADC common-mode biasing and differential signal chains.
For engineers reviewing the MAX6072AAUB50+ datasheet, MAX6072AAUB50+ pinout, MAX6072AAUB50+ application, or MAX6072AAUB50+ equivalent, key selection factors include dual-rail Kelvin sensing, thermal hysteresis matching (2.5ppm), low 150µA typical quiescent current per reference, and µMAX-10 package compatibility with space-constrained industrial and medical instrumentation.
Technical Context
The MAX6072AAUB50+ implements two independent BiCMOS bandgap-based series references with separate IN1/IN2 supply inputs and EN1/EN2 enable controls. Its dual Kelvin architecture-using OUT1F/OUT1S and OUT2F/OUT2S pairs-eliminates trace resistance errors by regulating voltage at the load point.
Each reference features internal trimming for 0.05% initial accuracy and 6ppm/°C max drift, with matched tracking (0.4ppm/°C drift difference, 2.5ppm thermal hysteresis difference) ensuring stable VREF/2 ratio across temperature cycles and long-term operation (15ppm drift over 1000 hours).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltages | 5.000V (VREF) and 2.500V (VREF/2) - enables precise ADC full-scale and common-mode referencing in single-supply systems |
| Initial Accuracy | ±0.05% at +25°C - ensures ≤2.5mV absolute error on 5V rail without calibration |
| Temp Drift (max) | 6ppm/°C over -40°C to +125°C - contributes ≤0.45mV error across full range |
| 1/f Noise | 2ppm p-p (0.1–10Hz) - supports 18-bit+ ADC resolution in low-frequency measurement |
| Quiescent Current | 150µA per reference (typ) - allows battery-powered sensor nodes with multi-year runtime |
| Output Drive | ±10mA per rail with independent sense lines - maintains regulation under dynamic load steps without external op-amps |
| Enable Settling | 100µs (OUT1F), 75µs (OUT2F) to 0.01% - supports power-gated precision subsystems with fast wake-up |
Pinout & Package
The MAX6072AAUB50+ is housed in a 10-pin µMAX® package (RoHS-compliant, 3mm × 3mm, 0.8mm height) with exposed pad for thermal performance. Pin 1 is OUT1F; pins 3 and 8 are tied to ground; pins 9 and 4 control EN1 and EN2 respectively.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1F (Pin 1) | VREF Force Output | Delivers regulated 5.000V to load; must be shorted to OUT1S near load for Kelvin sensing |
| OUT1S (Pin 2) | VREF Sense Input | Feedback node for regulation - connects directly to load-side of OUT1F trace to cancel IR drop |
| GND (Pins 3, 8) | Power Ground | Both pins require low-impedance connection to solid ground plane for noise immunity and thermal stability |
| EN2 (Pin 4) | VREF/2 Enable | Active-high logic input; disables 2.5V output and reduces quiescent current to ≤28µA when low |
| IN2 (Pin 5) | VREF/2 Supply Input | Accepts 2.75V–5.5V; powers only the 2.5V reference section - can be isolated from IN1 |
| OUT2F (Pin 6) | VREF/2 Force Output | Delivers regulated 2.500V; shorted to OUT2S near load for accurate common-mode biasing |
| OUT2S (Pin 7) | VREF/2 Sense Input | Sense feedback for 2.5V rail - critical for maintaining exact VREF/2 ratio under load transients |
| EN1 (Pin 9) | VREF Enable | Active-high control for 5V output; independent enable allows staggered power-up sequencing |
| IN1 (Pin 10) | VREF Supply Input | Accepts 2.8V–5.5V; powers only the 5V reference - supports split-supply configurations |
Key Features
| Feature | Design Value |
|---|---|
| Dual Kelvin Outputs | Independent force/sense pairs (OUT1F/OUT1S, OUT2F/OUT2S) eliminate PCB trace resistance errors, enabling <0.01% system-level accuracy |
| Matched Thermal Tracking | 0.4ppm/°C drift difference and 2.5ppm thermal hysteresis difference ensure stable 2:1 ratio across temperature cycling and aging |
| Low-Power Enable Control | Separate EN1/EN2 inputs reduce total supply current to ≤28µA per disabled reference, extending battery life in portable medical devices |
| Capacitive-Load Stability | Stable with 0.1µF–10µF output capacitors - accommodates ceramic bypassing and large bulk capacitance for EMI-sensitive applications |
| High PSRR | 84dB (60Hz) on VREF/2 output - suppresses supply ripple in noisy industrial environments without additional filtering |
Applications
| ADC/DAC Reference & Common-Mode Set-Point | Test and Measurement / ATE |
|---|---|
Use Scenario: Precision 16–24-bit SAR or delta-sigma ADCs requiring simultaneous full-scale reference (VREF) and common-mode bias (VREF/2) for fully differential input stages. IC Role / Device Role / Timing Role: Provides tightly matched dual-rail voltage references with Kelvin sensing to maintain ADC ENOB across temperature and load variations. Use Value: Eliminates need for discrete resistor dividers or second reference IC, reducing board area by 30% and improving ratio accuracy to <0.005%. | Use Scenario: Automated test equipment generating calibrated analog stimulus and measuring DUT response with sub-LSB accuracy. IC Role / Device Role / Timing Role: Serves as primary reference source for programmable voltage sources and digitizer front-ends, leveraging independent enable for channel power management. Use Value: 6ppm/°C drift and 15ppm/1000h long-term stability ensure calibration validity over extended test sessions without recalibration. |
| High-Accuracy Industrial Process Control | Portable Medical Instrumentation |
Use Scenario: Loop-powered 4–20mA transmitters and PLC analog I/O modules operating in harsh factory environments (-40°C to +125°C). IC Role / Device Role / Timing Role: Supplies stable VREF and VREF/2 to sigma-delta ADCs and precision DACs used in sensor signal conditioning and actuator control loops. Use Value: Dual independent supplies (IN1/IN2) allow isolation between analog and digital sections, reducing noise coupling in mixed-signal industrial nodes. | Use Scenario: Battery-operated patient monitors (ECG, EEG, pulse oximeters) requiring ultra-low-noise, low-power references for biopotential amplification. IC Role / Device Role / Timing Role: Delivers clean 5V and 2.5V rails to ADCs and instrumentation amplifiers while consuming only 300µA total quiescent current. Use Value: 2ppm p-p 1/f noise and 120nV/√Hz spectral density support >100dB SNR in sub-10Hz biomedical measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6072BAUB50+ | 0.08% initial accuracy (vs. 0.05%), 8ppm/°C max drift (vs. 6ppm/°C), otherwise identical pinout, specs, and package | Lower-cost option where ±4mV 5V tolerance and slightly higher thermal drift are acceptable | Select MAX6072BAUB50+ for cost-sensitive industrial sensors where full A-grade accuracy is not required |
| ADR4550BRZ | Single 5.0V output, no VREF/2 rail; 0.02% initial accuracy, 3ppm/°C drift; SOIC-8 package | Requires external resistor divider or second reference IC to generate VREF/2, increasing component count and ratio error | Choose ADR4550BRZ only when VREF/2 is not needed or can be derived externally with sufficient accuracy |
Compared with MAX6072BAUB50+, the MAX6072AAUB50+ delivers tighter initial accuracy and lower drift for metrology-grade applications, while ADR4550BRZ offers superior single-rail stability but lacks integrated VREF/2 - necessitating design compromises in differential ADC architectures.
Availability
The MAX6072AAUB50+ is available at Aetrix Electronics and suitable for high-accuracy industrial process control, portable medical instrumentation, and automated test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6072AAUB50+ 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, medical, and communications applications.
The MAX6072 series was engineered specifically for high-resolution data acquisition systems needing matched dual-rail references with Kelvin sensing, low noise, and wide-temperature operation - addressing limitations of discrete divider or dual-single-reference solutions.
FAQ
What is the guaranteed initial accuracy of the MAX6072AAUB50+ over temperature?
The MAX6072AAUB50+ guarantees ±0.05% initial output voltage accuracy at +25°C, with maximum temperature coefficient of 6ppm/°C over the full -40°C to +125°C operating range. This translates to ≤±0.45mV total error on the 5.000V output across temperature extremes, confirmed by production testing and characterization per Maxim's datasheet specifications.
How does the Kelvin sensing architecture of the MAX6072AAUB50+ improve system-level accuracy?
The MAX6072AAUB50+ uses separate force (OUT1F/OUT2F) and sense (OUT1S/OUT2S) terminals to regulate voltage directly at the load point, eliminating errors from PCB trace resistance. When OUT1F and OUT1S are shorted at the load, the IC compensates for IR drop - enabling <0.01% system accuracy even with 100mΩ trace resistance, as verified in Maxim's functional diagrams and application circuits.
Can the MAX6072AAUB50+ operate with different supply voltages on IN1 and IN2?
Yes, the MAX6072AAUB50+ supports independent supply inputs: IN1 (2.8V–5.5V) powers the 5.000V reference, and IN2 (2.75V–5.5V) powers the 2.500V reference. This allows isolated power domains - for example, using a clean LDO for IN2 while sourcing IN1 from a noisier main rail - a capability explicitly documented in the Absolute Maximum Ratings and Electrical Characteristics tables.
What is the thermal hysteresis specification for the MAX6072AAUB50+, and why does it matter?
The MAX6072AAUB50+ exhibits 85ppm thermal hysteresis on each output and 2.5ppm hysteresis tracking (difference between OUT1F and OUT2F) after cycling from -40°C to +125°C. This low hysteresis ensures repeatable voltage values across thermal cycles - critical for field-deployed instruments that experience ambient temperature swings, as confirmed in the datasheet's Note 5 and Typical Operating Characteristics.
Does the MAX6072AAUB50+ require external capacitors, and what values are supported?
Yes, the MAX6072AAUB50+ requires output bypass capacitors of 0.1µF to 10µF on both OUT1F and OUT2F, as specified in the Capacitive-Load Stability Range parameter (0.1µF–10µF). A 0.1µF ceramic capacitor placed close to each output is mandatory for stability; larger values (e.g., 10µF tantalum) may be added in parallel to suppress load transients, per the Applications Information section.
MAX6072AAUB50+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.5V, 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.05%
- Temperature Coefficient:
- 6ppm/°C
- Noise - 0.1Hz to 10Hz:
- 4.8µVp-p, 9µVp-p
- Noise - 10Hz to 10kHz:
- 6µVrms, 15µVrms
- Voltage - Input:
- 2.8V ~ 5.5V
- Current - Supply:
- 320µA, 350µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-uMAX/uSOP
MAX6072AAUB50+ FAQ
1.How can I place an order for MAX6072AAUB50+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6072AAUB50+ 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 MAX6072AAUB50+ reliable?
The price and inventory of MAX6072AAUB50+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6072AAUB50+ is usually 5 days.
3.What payment methods are accepted for MAX6072AAUB50+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6072AAUB50+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6072AAUB50+?
MAX6072AAUB50+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6072AAUB50+ 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 MAX6072AAUB50+?
For technical support, including MAX6072AAUB50+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6072AAUB50+ requirements.
6.How does Aetrix verify that MAX6072AAUB50+ is sourced from the original manufacturer or authorized distributors?
All MAX6072AAUB50+ 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 MAX6072AAUB50+ meets industry standards.
7.What is the process for return or replacement of MAX6072AAUB50+?
All MAX6072AAUB50+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6072AAUB50+, 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 MAX6072AAUB50+ part is unused and in its original packaging.
Return procedure for MAX6072AAUB50+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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