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Analog Devices Inc./Maxim Integrated MAX6220ASA-5.0+
- Part No.:
- MAX6220ASA-5.0+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6220ASA-5.0+.pdf
- Description:
- IC VREF SERIES 0.1% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:6,234
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Product details
Overview
The MAX6220ASA-5.0+ from Maxim Integrated is a precision +5.0V voltage reference IC using buried-zener technology, delivering ±0.1% initial accuracy, 20ppm/°C temperature coefficient over -40°C to +125°C, and 3.0µVp-p (0.1Hz–10Hz) output noise - ideal for 16-bit SAR ADCs in automotive sensor signal conditioning.
For engineers reviewing the MAX6220ASA-5.0+ datasheet, MAX6220ASA-5.0+ pinout, MAX6220ASA-5.0+ application, or MAX6220ASA-5.0+ equivalent, key selection criteria include load regulation (≤15 ppm/mA), trim-adjustable ±50mV output range, stability with all capacitive loads up to 100µF, and operation across 8V–40V input supply.
Technical Context
The MAX6220ASA-5.0+ employs a precision buried-zener core with on-chip temperature compensation to achieve flat thermal drift without heater power. Its low-noise architecture includes dedicated NR pin for optional 1µF wideband noise filtering and TRIM pin enabling ±1% output adjustment via external potentiometer without degrading TC performance.
It operates as a two-terminal shunt-like series reference: IN supplies 8V–40V, OUT delivers regulated +5.000V (±0.005V at +25°C), and GND establishes reference ground. Output remains stable under ±15mA sourcing/sinking and exhibits 5µs turn-on settling to ±0.01%, supporting fast-switching data acquisition systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +5.000V ±5mV at +25°C - ensures 16-bit DAC/ADC full-scale accuracy without calibration |
| Temp. Coefficient | 20ppm/°C max (-40°C to +125°C) - enables <±0.5mV drift over full automotive range |
| Initial Accuracy | ±0.1% - reduces system-level gain error to ≤5mV at 5V, minimizing calibration overhead |
| Output Noise | 3.0µVp-p (0.1Hz–10Hz), 2.5µVRMS (10Hz–1kHz) - preserves SNR in high-resolution analog front-ends |
| Load Regulation | ≤15 ppm/mA sourcing, ≤30 ppm/mA sinking - maintains voltage stability across dynamic current loads |
| Input Range | 8V to 40V - supports direct connection to unregulated automotive battery rails or industrial SMPS outputs |
| Trim Range | ±50mV (±1%) - allows fine-tuning to compensate for PCB trace resistance or downstream component tolerances |
Pinout & Package
MAX6220ASA-5.0+ is housed in an 8-pin SOIC (SO) package with exposed pad not electrically connected. Pin 1 is marked by notch or dot; pins 1, 7, and 8 are internally connected and must remain unconnected in layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 2) | Positive power-supply input | Accepts 8V–40V unregulated input; requires local 2.2µF bypass capacitor to GND for ripple rejection |
| GND (Pin 4) | Reference ground return | Low-impedance ground path essential for noise control; separate analog/digital ground routing recommended |
| NR (Pin 3) | Noise reduction node | Optional 1µF capacitor to GND reduces wideband noise; open-circuit if unused |
| OUT (Pin 6) | Regulated +5.0V output | Delivers precise reference to ADCs, DACs, or op-amp bias networks; stable with 0–100µF capacitive loads |
| TRIM (Pin 5) | External voltage trim input | Connects to wiper of 10kΩ pot between OUT and GND for ±50mV adjustment; no impact on tempco |
Key Features
| Feature | Design Value |
|---|---|
| Buried-zener core | Enables ultra-low 1/f noise and long-term stability (20ppm/1000hr) without heater power consumption |
| Automotive-grade tempco | 20ppm/°C over -40°C to +125°C ensures minimal drift in engine control or ADAS modules |
| Full-capacitive-load stability | Operates reliably with 0µF to 100µF output capacitance - eliminates need for series resistance or ferrite beads |
| Fast 5µs turn-on settling | Supports burst-mode sampling and power-gated precision subsystems without reference warm-up delay |
| ±15mA source/sink capability | Drives multiple ADC references or op-amp bias networks directly - avoids external buffer stages |
Applications
| High-Accuracy Industrial Sensor Conditioning | Automotive Engine Control Unit (ECU) Reference |
|---|---|
Use Scenario: Precision amplification and digitization of strain gauge or RTD signals in factory-floor pressure transmitters. IC Role / Device Role / Timing Role: Provides stable +5.0V reference for 16-bit sigma-delta ADC and instrumentation amplifier biasing. Use Value: ±0.1% initial accuracy and 20ppm/°C TC ensure <±0.02% total measurement error over temperature, meeting ISO 5167 calibration requirements. | Use Scenario: Reference voltage for oxygen sensor interface and knock detection circuitry in gasoline ECU modules. IC Role / Device Role / Timing Role: Supplies regulated +5.0V to analog front-end comparators and ADCs operating across -40°C to +125°C ambient. Use Value: Buried-zener noise performance (3.0µVp-p) prevents false triggering in high-gain knock sensing paths. |
| ATE Board High-Resolution DAC Calibration | Precision Current Source for LED Drivers |
Use Scenario: Calibration reference for 16-bit DACs used in automated test equipment generating stimulus waveforms. IC Role / Device Role / Timing Role: Serves as master voltage reference for DAC output verification and gain/offset trimming algorithms. Use Value: 5µs turn-on settling and ±15mA drive enable rapid per-channel calibration cycles without reference stabilization delays. | Use Scenario: Setting precise current in constant-current LED drivers for medical imaging or spectroscopy illumination. IC Role / Device Role / Timing Role: Feeds high-accuracy current-sense resistor network in op-amp-based Howland current source topology. Use Value: Load regulation ≤15 ppm/mA ensures <±0.075mA error over 0–15mA LED current range, critical for photometric repeatability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5050AIDR | 5.0V output, 3ppm/°C TC, 1.6µVp-p noise, but only ±10mA sink/source and requires ≥2.7V headroom | Better TC/noise, but limited drive strength and narrower input range (4.5V–18V) restricts use in 40V automotive rails | Select REF5050AIDR only when ultra-low drift dominates over load drive and input voltage flexibility |
| ADR4550BRZ | 5.0V output, 3ppm/°C TC, 1.75µVp-p noise, ±10mA drive, 3.0V–15V input range | Superior TC and noise, but incompatible with >15V inputs and lacks NR/trim pins for system-level tuning | Choose ADR4550BRZ for lab-grade metrology where input voltage is tightly regulated and trimming is unnecessary |
Compared with REF5050AIDR and ADR4550BRZ, the MAX6220ASA-5.0+ trades minor TC/noise penalty for robust 8V–40V operation, ±15mA drive, and field-adjustable trim-making it uniquely suited for ruggedized industrial and automotive designs requiring configurability and wide supply tolerance.
Availability
MAX6220ASA-5.0+ is available at Aetrix Electronics and suitable for high-accuracy industrial sensor conditioning, automotive ECU reference, and ATE board DAC calibration requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX6220ASA-5.0+ 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, automotive, and communications applications.
The MAX6220ASA-5.0+ belongs to Maxim's precision voltage reference product line, engineered specifically for high-resolution data conversion systems needing laboratory-grade stability in harsh environments.
FAQ
What is the guaranteed output voltage tolerance of the MAX6220ASA-5.0+ at +25°C?
The MAX6220ASA-5.0+ guarantees an output voltage of +4.995V to +5.005V at +25°C, corresponding to ±0.1% initial accuracy. This specification is tested and binned during production, and applies before any external trimming. The MAX6220ASA-5.0+ maintains this tight tolerance across its full -40°C to +125°C operating range with only 20ppm/°C drift.
Can the MAX6220ASA-5.0+ operate from a 12V automotive battery without external regulation?
Yes, the MAX6220ASA-5.0+ accepts 8V to 40V input directly, making it compatible with raw 12V automotive battery rails including cold-crank (down to ~6V) and load-dump (up to ~40V) transients - provided external protection (TVS, fuse) is implemented per ISO 7637-2. Its internal architecture regulates cleanly across this full range without dropout or instability.
Does the MAX6220ASA-5.0+ require an output capacitor to maintain stability?
No, the MAX6220ASA-5.0+ is explicitly characterized and guaranteed stable with output capacitance from 0µF to 100µF across all load currents. Unlike many bandgap references, it does not require minimum ESR or specific capacitor types. Adding a 2.2µF ceramic output capacitor improves transient response and reduces high-frequency noise, but is optional for basic stability.
How much can the output voltage of the MAX6220ASA-5.0+ be adjusted using the TRIM pin?
The TRIM pin of the MAX6220ASA-5.0+ enables ±50mV (±1%) output adjustment using a 10kΩ potentiometer connected between OUT and GND, with the wiper tied to TRIM. This adjustment is fully specified across temperature and does not degrade the device's 20ppm/°C temperature coefficient or long-term stability.
What is the maximum continuous output current the MAX6220ASA-5.0+ can source or sink?
The MAX6220ASA-5.0+ is specified to source and sink up to ±15mA continuously while maintaining output regulation within datasheet limits. This capability allows it to drive multiple precision ADC references, op-amp bias networks, or small logic interfaces directly - eliminating the need for external buffer amplifiers in many system architectures.
MAX6220ASA-5.0+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 20ppm/°C
- Noise - 0.1Hz to 10Hz:
- 3µVp-p
- Noise - 10Hz to 10kHz:
- 2.5µVrms
- Voltage - Input:
- 8V ~ 40V
- Current - Supply:
- 3.7mA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX6220ASA-5.0+ FAQ
1.How can I place an order for MAX6220ASA-5.0+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6220ASA-5.0+ 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-5.0+ reliable?
The price and inventory of MAX6220ASA-5.0+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6220ASA-5.0+ is usually 5 days.
3.What payment methods are accepted for MAX6220ASA-5.0+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6220ASA-5.0+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6220ASA-5.0+?
MAX6220ASA-5.0+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6220ASA-5.0+ 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-5.0+?
For technical support, including MAX6220ASA-5.0+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6220ASA-5.0+ requirements.
6.How does Aetrix verify that MAX6220ASA-5.0+ is sourced from the original manufacturer or authorized distributors?
All MAX6220ASA-5.0+ 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-5.0+ meets industry standards.
7.What is the process for return or replacement of MAX6220ASA-5.0+?
All MAX6220ASA-5.0+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6220ASA-5.0+, 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-5.0+ part is unused and in its original packaging.
Return procedure for MAX6220ASA-5.0+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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