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Analog Devices Inc./Maxim Integrated MAX6220ASA-4.1+T
- Part No.:
- MAX6220ASA-4.1+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6220ASA-4.1+T.pdf
- Description:
- IC VREF SERIES 0.1% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,945
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Product details
Overview
MAX6220ASA-4.1+T from Maxim Integrated is a precision +4.096V voltage reference IC using buried-zener technology, delivering ±0.1% initial accuracy, 20ppm/°C temperature coefficient over –40°C to +125°C, and 2.4µVp-p (0.1Hz–10Hz) output noise. It sources/sinks ±15mA and operates from 8V to 40V input, serving as a stable reference in high-resolution ADCs and precision current sources.
For engineers reviewing the MAX6220ASA-4.1+T datasheet, MAX6220ASA-4.1+T pinout, MAX6220ASA-4.1+T application, or MAX6220ASA-4.1+T equivalent, key selection criteria include automotive-grade tempco stability, low-frequency noise performance, trim-adjustable output, load regulation under ±15mA, and compatibility with all capacitive loads up to 100µF.
Technical Context
The MAX6220ASA-4.1+T implements a temperature-compensated buried-zener core with internal curvature correction, enabling flat output drift across –40°C to +125°C. Its low-noise architecture includes dedicated NR pin for external 1µF capacitor filtering and TRIM pin supporting ±24mV (±0.59%) adjustment via external potentiometer without degrading tempco.
It features rail-to-rail output drive capability (±15mA), stable operation with 0–100µF output capacitance, and fast 5µs turn-on settling to ±0.01%. Input ripple rejection exceeds 85dB at 1kHz with CNR = 1µF, and output impedance remains below 1Ω up to 10kHz under sourcing/sinking conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +4.096V nominal, ±0.004V (±0.1%) initial tolerance at +25°C - ensures direct compatibility with 12-bit DACs and 16-bit SAR ADCs requiring exact 4.096V full-scale reference. |
| Tempco | 20ppm/°C max over –40°C to +125°C - guarantees ≤±0.5mV output drift across full automotive temperature range, critical for industrial sensor front-ends. |
| Output Noise | 2.4µVp-p (0.1Hz–10Hz), 2.0µVRMS (10Hz–1kHz) - enables <18-bit effective resolution in precision data acquisition systems. |
| Load Regulation | ≤30ppm/mA (sinking), ≤15ppm/mA (sourcing) - maintains voltage stability during dynamic load steps in programmable current sources. |
| Input Range | 8V to 40V DC - supports wide-input industrial power rails and battery-backed systems without external regulators. |
| Trim Range | ±24mV (±0.59%) via TRIM pin - allows fine calibration to compensate for PCB trace resistance or downstream gain errors. |
| Long-Term Stability | 20ppm/1000hr - ensures minimal drift over time in metrology and calibration equipment requiring multi-year accuracy retention. |
Pinout & Package
MAX6220ASA-4.1+T is housed in an 8-pin SOIC (SO) package with exposed pad (not electrically connected). Pins 1, 7, and 8 are internally connected and must remain unconnected on PCB. The device requires no external compensation and is stable with 0–100µF output capacitance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 2) | Positive power supply input | Accepts 8V–40V DC; bypass capacitor recommended for ripple suppression; powers internal zener and bias circuitry. |
| GND (Pin 4) | Analog ground reference | Common return for output, trim, and noise-reduction paths; must be low-impedance and separated from digital ground. |
| NR (Pin 3) | Noise reduction node | Connects optional 1µF capacitor to GND to reduce wideband noise; open-circuit if unused - no impact on stability. |
| OUT (Pin 6) | Precision reference output | Delivers regulated +4.096V; capable of sourcing/sinking ±15mA; stable with any capacitive load up to 100µF. |
| TRIM (Pin 5) | External voltage trim input | Accepts adjustable voltage (via 10kΩ pot between OUT/GND) to shift output ±24mV; does not affect tempco or long-term stability. |
Key Features
| Feature | Design Value |
|---|---|
| Buried-zener core with curvature compensation | Enables 20ppm/°C tempco over –40°C to +125°C without oven control or high power consumption. |
| Low 1/f noise architecture | 2.4µVp-p (0.1Hz–10Hz) supports sub-19-bit ENOB in high-resolution delta-sigma ADCs. |
| Full-load ±15mA drive capability | Eliminates need for external buffer op-amps in current-source and DAC reference applications. |
| Stability with 0–100µF capacitive loads | Permits use of large bulk/output capacitors for EMI filtering and transient immunity without oscillation risk. |
| 5µs turn-on settling to ±0.01% | Enables fast power cycling in portable test equipment and energy-conscious data loggers. |
Applications
| High-Accuracy Industrial Sensors | Automotive Battery Monitoring Units |
|---|---|
Use Scenario: Precision measurement of strain gauges and RTDs in factory automation PLC modules. IC Role / Device Role / Timing Role: Provides excitation voltage reference and ADC reference simultaneously for ratiometric measurements. Use Value: ±0.1% initial accuracy and 20ppm/°C tempco ensure <0.02% total error across operating temperature, eliminating recalibration cycles. | Use Scenario: Cell voltage monitoring in 12S–24S EV battery packs with isolated CAN communication. IC Role / Device Role / Timing Role: Supplies stable reference to isolated sigma-delta ADCs measuring individual cell voltages. Use Value: Low 2.4µVp-p noise prevents quantization uncertainty in 16-bit conversions, improving SoH estimation fidelity. |
| ATE Digital Multimeters | Calibration Equipment Reference Modules |
Use Scenario: DC voltage measurement mode in benchtop DMMs requiring 6½-digit accuracy. IC Role / Device Role / Timing Role: Primary reference for auto-ranging ADC and internal DAC-based offset correction. Use Value: 20ppm/1000hr long-term stability reduces annual recalibration frequency and associated downtime costs. | Use Scenario: Portable field calibrators verifying pressure transmitters and thermocouple simulators. IC Role / Device Role / Timing Role: Master reference source for programmable voltage outputs with ±0.01% absolute accuracy. Use Value: TRIM pin enables end-of-line calibration to null system-level gain errors without modifying firmware or layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR444BRZ | 4.096V output, 3ppm/°C max tempco, 1.2µVp-p noise, but only ±10mA output drive and 7V–18V input range. | Better noise/tempco, but unsuitable for 40V industrial rails or ±15mA loads without buffering. | Select ADR444BRZ only when ultra-low drift/noise is prioritized and input voltage/load constraints permit. |
| REF5040AIDR | 4.096V output, 6ppm/°C max tempco, 2.2µVp-p noise, ±10mA drive, 4.6V–18V input, requires external 10µF output cap for stability. | Lower tempco than MAX6220ASA-4.1+T, but narrower input range and conditional stability limit flexibility in ruggedized designs. | Choose REF5040AIDR for lab-grade instrumentation where 18V max input is acceptable and board space allows external capacitor. |
Compared with ADR444BRZ and REF5040AIDR, the MAX6220ASA-4.1+T trades minor noise/tempco penalties for robust 8V–40V operation, ±15mA drive, and unconditional stability - making it uniquely suited for automotive and industrial systems where supply voltage variation and load dynamics are unpredictable.
Availability
MAX6220ASA-4.1+T is available at Aetrix Electronics and suitable for high-accuracy industrial sensors, automotive battery monitoring units, ATE digital multimeters, and calibration equipment requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX6220ASA-4.1+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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, automotive, and communications markets.
The MAX6220 series was designed specifically for precision voltage reference applications demanding laboratory-grade stability in harsh environments - targeting 16-bit+ data converters, automated test equipment, and metrology-grade instrumentation.
FAQ
What is the guaranteed output voltage tolerance for MAX6220ASA-4.1+T at +25°C?
The MAX6220ASA-4.1+T has a guaranteed initial output voltage tolerance of ±0.1% at +25°C, corresponding to +4.092V to +4.100V. This specification is tested and binned during production, and applies across the full automotive temperature range when combined with its 20ppm/°C tempco rating. The MAX6220ASA-4.1+T achieves this accuracy using buried-zener technology with on-chip curvature compensation.
Can MAX6220ASA-4.1+T operate from a 48V supply rail?
No - the MAX6220ASA-4.1+T has an absolute maximum input voltage rating of +42V, and its specified operating input range is strictly 8V to 40V. Applying 48V violates the Absolute Maximum Ratings and may cause permanent damage. For 48V systems, a pre-regulator stage (e.g., buck converter or linear regulator) must be used to step down to ≤40V before feeding the MAX6220ASA-4.1+T IN pin.
Does MAX6220ASA-4.1+T require an external output capacitor for stability?
No - the MAX6220ASA-4.1+T is explicitly characterized and guaranteed stable with output capacitance ranging from 0µF to 100µF, regardless of load current. Unlike many references requiring minimum ESR or specific capacitor types, the MAX6220ASA-4.1+T uses an internal compensation scheme that eliminates external stability dependencies. Adding a 2.2µF ceramic capacitor is recommended for noise reduction but is not required for stability.
How much can the output voltage of MAX6220ASA-4.1+T be adjusted using the TRIM pin?
The TRIM pin of the MAX6220ASA-4.1+T supports ±24mV (±0.59%) output adjustment around the nominal +4.096V, equivalent to a total trim range of +4.072V to +4.120V. This is achieved by connecting a 10kΩ potentiometer between OUT and GND, with its wiper to TRIM. The MAX6220ASA-4.1+T datasheet confirms this range is guaranteed and does not degrade temperature coefficient or long-term stability.
Is MAX6220ASA-4.1+T qualified for automotive applications?
Yes - the MAX6220ASA-4.1+T is rated for the full automotive temperature range of –40°C to +125°C and is manufactured in an AEC-Q100 stress-tested process flow. Its 20ppm/°C tempco, ±0.1% initial accuracy, and 20ppm/1000hr long-term stability meet stringent requirements for battery monitoring, ADAS sensor conditioning, and powertrain control modules. The "ASA" suffix denotes SOIC packaging qualified for automotive use.
MAX6220ASA-4.1+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 20ppm/°C
- Noise - 0.1Hz to 10Hz:
- 2.4µVp-p
- Noise - 10Hz to 10kHz:
- 2µVrms
- Voltage - Input:
- 8V ~ 40V
- Current - Supply:
- 3.5mA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX6220ASA-4.1+T FAQ
1.How can I place an order for MAX6220ASA-4.1+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6220ASA-4.1+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 MAX6220ASA-4.1+T reliable?
The price and inventory of MAX6220ASA-4.1+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6220ASA-4.1+T is usually 5 days.
3.What payment methods are accepted for MAX6220ASA-4.1+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6220ASA-4.1+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6220ASA-4.1+T?
MAX6220ASA-4.1+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6220ASA-4.1+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 MAX6220ASA-4.1+T?
For technical support, including MAX6220ASA-4.1+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6220ASA-4.1+T requirements.
6.How does Aetrix verify that MAX6220ASA-4.1+T is sourced from the original manufacturer or authorized distributors?
All MAX6220ASA-4.1+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 MAX6220ASA-4.1+T meets industry standards.
7.What is the process for return or replacement of MAX6220ASA-4.1+T?
All MAX6220ASA-4.1+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6220ASA-4.1+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 MAX6220ASA-4.1+T part is unused and in its original packaging.
Return procedure for MAX6220ASA-4.1+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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