My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6220ASA-2.5+
- Part No.:
- MAX6220ASA-2.5+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6220ASA-2.5+.pdf
- Description:
- IC VREF SERIES 0.12% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,330
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6220ASA-2.5+ from Maxim Integrated is a precision +2.5V voltage reference IC using buried-zener technology, delivering ±0.1% initial accuracy, 20ppm/°C temperature coefficient over –40°C to +125°C, and 1.5µVp-p (0.1Hz–10Hz) output noise - deployed in high-resolution 16-bit data converters and ATE systems requiring stable excitation sources.
For engineers reviewing the MAX6220ASA-2.5+ datasheet, MAX6220ASA-2.5+ pinout, MAX6220ASA-2.5+ application, or MAX6220ASA-2.5+ equivalent, key selection criteria include automotive-grade tempco stability, low-noise performance under capacitive loads, ±15mA sink/source capability, and trim-adjustable output for calibration-critical instrumentation.
Technical Context
The MAX6220ASA-2.5+ employs a buried-zener core with on-chip temperature compensation to achieve flat thermal drift across –40°C to +125°C, eliminating need for ovenized or heated references. Its output remains stable with any capacitive load from 0µF to 100µF, enabling direct interface with ADC sample-and-hold inputs and DAC reference buffers without external isolation.
It supports optional noise reduction via a 1µF capacitor on the NR pin, reducing wideband noise while maintaining <5µs turn-on settling to ±0.01%. The TRIM pin allows ±15mV (±0.6%) adjustment without degrading temperature stability or long-term drift.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +2.500V ±3mV at +25°C - ensures sub-LSB error in 16-bit (±31.25mV full-scale) systems |
| Tempco | 20ppm/°C max (–40°C to +125°C) - enables ≤±0.5mV total drift over full automotive range |
| Noise (0.1–10Hz) | 1.5µVp-p - preserves SNR >110dB in precision sigma-delta ADC front-ends |
| Load Regulation | ≤15ppm/mA sourcing, ≤30ppm/mA sinking - maintains accuracy under dynamic load switching |
| Input Range | 8V to 40V - supports unregulated industrial rails and battery-backed supplies |
| Long-Term Stability | 20ppm/1000hr - guarantees calibration integrity over 6+ months in field-deployed sensors |
| Supply Current | 3.3mA typical - enables low-power operation in always-on monitoring nodes |
Pinout & Package
MAX6220ASA-2.5+ 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 in PCB layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 2) | Positive power-supply input | Accepts 8V–40V DC; bypass capacitor recommended to suppress supply ripple coupling |
| GND (Pin 4) | Analog ground reference | Must be star-connected to minimize ground bounce in mixed-signal systems |
| NR (Pin 3) | Noise reduction node | Connects to 1µF capacitor to reduce wideband noise; open if unused |
| OUT (Pin 6) | Precision +2.5V reference output | Stable with 0–100µF capacitive loads; drives ADC REF pins directly |
| TRIM (Pin 5) | External voltage trim input | Accepts resistive divider for ±15mV (±0.6%) fine adjustment without affecting tempco |
Key Features
| Feature | Design Value |
|---|---|
| Buried-zener core | Enables ultra-low 1.5µVp-p noise and 20ppm/°C tempco without heater power or thermal mass |
| Capacitive-load immunity | Stable with 0–100µF output capacitance - eliminates need for series isolation resistor in ADC reference paths |
| Trim-adjustable output | ±15mV (±0.6%) adjustment range via external potentiometer - supports system-level calibration without firmware changes |
| High transient immunity | <5µs turn-on settling and <500µV overshoot during ±10mA load steps - prevents reference glitching in fast-sampling systems |
| Automotive temperature range | Specified from –40°C to +125°C - qualified for under-hood and industrial control environments |
Applications
| High-Accuracy Industrial Control | ATE Equipment |
|---|---|
|
Use Scenario: Precision analog input modules in PLCs measuring 4–20mA sensor loops with 16-bit resolution. IC Role / Device Role / Timing Role: Primary voltage reference for SAR and sigma-delta ADCs digitizing process variables. Use Value: 20ppm/°C tempco and 1.5µVp-p noise ensure ≤0.002% measurement uncertainty across ambient temperature swings. |
Use Scenario: Automated test systems validating high-speed DACs and precision op-amps. IC Role / Device Role / Timing Role: Stable excitation source for DUT biasing and reference for metrology-grade digitizers. Use Value: ±0.1% initial accuracy and 20ppm/1000hr long-term stability enable pass/fail thresholds traceable to NIST standards. |
| Precision Current Sources | Medical Instrumentation |
|
Use Scenario: Programmable current sources for photodiode transimpedance amplifiers in gas analyzers. IC Role / Device Role / Timing Role: Reference for current-setting DACs and feedback in Howland current pumps. Use Value: ±15mA sink/source capability and low output impedance (<1Ω @ 10kHz) maintain setpoint fidelity under varying load impedances. |
Use Scenario: Portable ECG and EEG front-ends requiring low-noise, battery-operated analog signal chains. IC Role / Device Role / Timing Role: Reference for 16-bit delta-sigma ADCs sampling biopotential signals at 1kSPS. Use Value: 1.5µVp-p noise and 0.1Hz–10Hz spectral purity preserve microvolt-level signal integrity without post-acquisition filtering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5025IDR | 2.5V, 3ppm/°C max, 0.1µVp-p noise, but only ±10mA output drive and requires ≥3.3V supply | Better tempco/noise, but unsuitable for 8V–40V industrial rails or high-current sourcing | Select REF5025IDR only when ultra-low drift dominates over supply flexibility and drive strength |
| ADR441BRZ | 2.5V, 3ppm/°C max, 1.2µVp-p noise, SOIC-8, but limited to –40°C to +105°C and no NR pin | Higher precision in commercial temp range; lacks automotive qualification and noise-reduction option | Choose ADR441BRZ for lab-grade bench instruments where extended temperature range is unnecessary |
Compared with REF5025IDR and ADR441BRZ, the MAX6220ASA-2.5+ trades minor tempco/noise margin for robust 8V–40V operation, ±15mA drive, automotive qualification, and configurable noise reduction - making it optimal for field-deployed industrial and automotive systems demanding reliability over absolute best-case specs.
Availability
MAX6220ASA-2.5+ is available at Aetrix Electronics and suitable for high-accuracy industrial control, ATE equipment, and precision current sources requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX6220ASA-2.5+ 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 medical applications.
The MAX6220ASA-2.5+ belongs to Maxim's high-stability voltage reference product line, engineered specifically for metrology-grade data acquisition where low noise, tight initial accuracy, and automotive temperature resilience are mandatory.
FAQ
What is the maximum capacitive load the MAX6220ASA-2.5+ can drive without instability?
The MAX6220ASA-2.5+ is specified stable with any capacitive load from 0µF to 100µF across its full operating temperature and load-current range. This eliminates the need for series isolation resistors when driving ADC reference inputs or large decoupling caps, simplifying layout and preserving transient response. No external compensation is required for stability - a key differentiator versus bandgap-based references.
Does the MAX6220ASA-2.5+ require an external noise-reduction capacitor to meet its 1.5µVp-p specification?
No - the 1.5µVp-p (0.1Hz–10Hz) noise specification for the MAX6220ASA-2.5+ is guaranteed with CNR = 0µF. Adding a 1µF capacitor to the NR pin further reduces wideband noise but is optional. The base specification reflects intrinsic buried-zener performance, making MAX6220ASA-2.5+ suitable for ultra-low-noise applications even without added components.
Can the MAX6220ASA-2.5+ operate from a 5V supply rail?
No - the MAX6220ASA-2.5+ requires a minimum input voltage of 8V per its Absolute Maximum Ratings and Electrical Characteristics tables. It is designed for higher-voltage industrial and automotive supplies (8V–40V), not low-voltage logic rails. Attempting operation below 8V will result in regulation loss and undefined output behavior.
What is the purpose of the TRIM pin on the MAX6220ASA-2.5+ and how much adjustment does it provide?
The TRIM pin on the MAX6220ASA-2.5+ accepts an external resistive divider to adjust the output voltage by ±15mV (±0.6% of 2.5V). This allows system-level calibration after PCB assembly to compensate for board-level errors. Crucially, trimming does not degrade the device's 20ppm/°C temperature coefficient or long-term stability - the compensation is applied post-compensation circuitry.
Is the MAX6220ASA-2.5+ qualified for automotive applications?
Yes - the MAX6220ASA-2.5+ is explicitly rated for the automotive temperature range of –40°C to +125°C and features 20ppm/°C max tempco, 20ppm/1000hr long-term stability, and robust supply rejection - all validated across that full range. Its SOIC package meets AEC-Q200 stress requirements when used within specified electrical limits.
MAX6220ASA-2.5+ 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):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.12%
- Temperature Coefficient:
- 20ppm/°C
- Noise - 0.1Hz to 10Hz:
- 1.5µVp-p
- Noise - 10Hz to 10kHz:
- 1.3µVrms
- Voltage - Input:
- 8V ~ 40V
- Current - Supply:
- 3.3mA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX6220ASA-2.5+ FAQ
1.How can I place an order for MAX6220ASA-2.5+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6220ASA-2.5+ 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-2.5+ reliable?
The price and inventory of MAX6220ASA-2.5+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6220ASA-2.5+ is usually 5 days.
3.What payment methods are accepted for MAX6220ASA-2.5+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6220ASA-2.5+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6220ASA-2.5+?
MAX6220ASA-2.5+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6220ASA-2.5+ 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-2.5+?
For technical support, including MAX6220ASA-2.5+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6220ASA-2.5+ requirements.
6.How does Aetrix verify that MAX6220ASA-2.5+ is sourced from the original manufacturer or authorized distributors?
All MAX6220ASA-2.5+ 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-2.5+ meets industry standards.
7.What is the process for return or replacement of MAX6220ASA-2.5+?
All MAX6220ASA-2.5+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6220ASA-2.5+, 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-2.5+ part is unused and in its original packaging.
Return procedure for MAX6220ASA-2.5+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6220ASA-2.5+ Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
-
LM4040CYM3-2.5-TR
Microchip Technology
-
LM4040CYM3-4.1-TR
Microchip Technology
-
LM4040EIM3-2.5/NOPB
Texas Instruments
-
AZ431LBNTR-G1
Diodes Incorporated
-
LM4040D20IDBZR
Texas Instruments
-
LM4041DIM3-ADJ/NOPB
Texas Instruments
-
LM4040DIM3X-2.5/NOPB
Texas Instruments
-
LM4040DIM3-2.5/NOPB
Texas Instruments
-
AZ431LANTR-G1
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
