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Analog Devices Inc./Maxim Integrated MAX6220ASA-2.5+T
- Part No.:
- MAX6220ASA-2.5+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6220ASA-2.5+T.pdf
- Description:
- IC VREF SERIES 0.12% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,618
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Product details
Overview
MAX6220ASA-2.5+T 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. It sources/sinks ±15mA and operates from 8V to 40V input, serving as a stable reference in high-resolution 16-bit data converters.
For engineers reviewing the MAX6220ASA-2.5+T datasheet, MAX6220ASA-2.5+T pinout, MAX6220ASA-2.5+T application, or MAX6220ASA-2.5+T equivalent, key selection criteria include automotive-grade thermal 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-2.2.5+T implements a temperature-compensated buried-zener core with internal curvature correction, enabling flat output drift across -40°C to +125°C. Its output impedance remains below 1Ω up to 10kHz, supporting fast load-transient response (±10mA step in <2µs with <500µV deviation).
It features dual-path noise suppression: optional 1µF capacitor on NR pin reduces wideband noise, while internal design minimizes sensitivity to supply ripple - achieving >85dB rejection at 1kHz with CNR = 0µF. The TRIM pin allows ±15mV (±0.6%) adjustment without degrading long-term stability or temperature coefficient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +2.500V ±3mV at +25°C - ensures 16-bit DAC/ADC full-scale accuracy without calibration |
| Temp. Coefficient | 20ppm/°C max (-40°C to +125°C) - enables stable operation in automotive engine control units |
| Initial Accuracy | ±0.1% - eliminates need for post-production trimming in precision sensor signal chains |
| Output Noise | 1.5µVp-p (0.1Hz–10Hz), 1.3µVRMS (10Hz–1kHz) - critical for low-drift weigh-scale and strain-gauge amplifiers |
| Load Regulation | 15ppm/mA sourcing, 30ppm/mA sinking - maintains reference integrity under dynamic current draw in multiplexed data acquisition |
| Input Range | 8V to 40V - supports direct connection to unregulated industrial 24V rails or automotive battery systems |
| Long-Term Stability | 20ppm/1000hr - guarantees minimal drift during 10-year field deployment in process control transmitters |
Pinout & Package
MAX6220ASA-2.5+T is housed in an 8-pin SOIC (SO) package with exposed pad (not electrically connected), footprint compliant with JEDEC MS-012AA. Pins 1, 7, and 8 are internally connected and must remain unconnected on PCB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 2) | Positive power-supply input | Accepts 8V–40V DC; bypass capacitor recommended for ripple rejection |
| 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-circuit if unused |
| OUT (Pin 6) | Precision voltage output | Delivers regulated +2.5V; stable with 0–100µF capacitive loads |
| TRIM (Pin 5) | External voltage trim input | Accepts resistive divider for ±15mV (±0.6%) output adjustment without affecting tempco |
Key Features
| Feature | Design Value |
|---|---|
| Buried-zener core with curvature compensation | Enables 20ppm/°C tempco over full automotive range without oven control or heater power |
| Trim-adjustable output | ±15mV fine-tuning via external potentiometer preserves ±0.1% initial accuracy and long-term stability |
| Stable with all capacitive loads | Eliminates need for output capacitor selection or stability analysis - works with 0µF to 100µF |
| Low 1.5µVp-p 0.1Hz–10Hz noise | Reduces quantization uncertainty in 24-bit delta-sigma ADCs used in precision instrumentation |
| ±15mA source/sink capability | Drives multiple op-amp bias networks or SAR ADC reference inputs without external buffers |
Applications
| High-Accuracy Industrial Control | Automotive Engine Management |
|---|---|
Use Scenario: Analog input modules in PLCs digitizing 4–20mA sensor loops with 16-bit resolution. IC Role / Device Role / Timing Role: Primary voltage reference for successive-approximation ADCs and precision DACs generating analog outputs. Use Value: 20ppm/°C tempco and ±0.1% accuracy ensure loop calibration holds across factory-floor temperature swings (0°C–70°C). | Use Scenario: Fuel-injection timing control in gasoline direct injection (GDI) ECUs requiring stable sensor bias under hood temperatures up to +125°C. IC Role / Device Role / Timing Role: Reference for knock sensor signal conditioning and oxygen sensor interface circuitry. Use Value: Buried-zener architecture and automotive-grade tempco guarantee no reference drift-induced misfire detection over lifetime. |
| ATE Equipment | Precision Current Sources |
Use Scenario: Parametric test systems validating voltage tolerances of ICs under temperature cycling (-40°C to +125°C). IC Role / Device Role / Timing Role: Calibration reference for SMU (source-measure unit) voltage rails and DMM reference paths. Use Value: 20ppm/1000hr long-term stability eliminates daily recalibration, reducing test floor downtime. | Use Scenario: Programmable current sources for LED driver characterization and photodiode biasing in optical test benches. IC Role / Device Role / Timing Role: Set-point reference for op-amp-based Howland current pumps. Use Value: Low 1.5µVp-p noise prevents current ripple that would obscure sub-nA photocurrent measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5025IDR | 2.5V output, 3ppm/°C max tempco, 0.05% initial accuracy, but only ±10mA output drive | Better stability for lab-grade metrology; insufficient sink current for multiplexed ADC references | Select REF5025IDR when ultra-low tempco outweighs drive strength; avoid where ±15mA load capability is required |
| ADR4525BRZ | 2.5V output, 3ppm/°C max tempco, 0.02% initial accuracy, 1.0µVp-p noise, but requires ≥3.3V input and lacks TRIM/NR pins | Superior noise and accuracy for portable instrumentation; no provision for board-level trimming or noise filtering | Select ADR4525BRZ for battery-powered precision devices; choose MAX6220ASA-2.5+T when adjustable output and wide-input flexibility are mandatory |
Compared with REF5025IDR and ADR4525BRZ, the MAX6220ASA-2.5+T trades marginal accuracy and tempco for robust ±15mA drive, 8V–40V input range, and configurable noise/trim features - making it uniquely suited for industrial and automotive systems where supply variation, load dynamics, and field calibration matter more than lab-grade specs.
Availability
MAX6220ASA-2.5+T is available at Aetrix Electronics and suitable for high-accuracy industrial control, automotive engine management, and ATE equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6220ASA-2.5+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) designs precision analog, mixed-signal, and power-management ICs for demanding industrial, automotive, and communications applications.
The MAX6220 series was developed specifically for high-stability, low-noise voltage referencing in 16-bit+ data-conversion systems operating across automotive and industrial temperature ranges.
FAQ
What is the maximum input voltage rating for MAX6220ASA-2.5+T?
The absolute maximum input voltage for MAX6220ASA-2.5+T is +42V referenced to GND. Continuous operation is specified from 8V to 40V. Exceeding +42V may cause permanent damage. The device's internal protection limits allow continuous short-circuit of OUT to GND when VIN ≤12V, but only 5 seconds when VIN ≤42V - a critical constraint for fault-tolerant power-supply designs using MAX6220ASA-2.5+T.
Does MAX6220ASA-2.5+T require an output capacitor for stability?
No, MAX6220ASA-2.5+T is explicitly designed to be stable with any capacitive load from 0µF to 100µF across its full operating range and load current (±15mA). This eliminates output capacitor selection risk in high-reliability systems. While adding a 2.2µF ceramic capacitor improves transient response and reduces glitching, it is optional - unlike many bandgap references that oscillate without minimum COUT.
Can the output voltage of MAX6220ASA-2.5+T be adjusted, and by how much?
Yes, the output voltage of MAX6220ASA-2.5+T can be adjusted using the TRIM pin with an external 10kΩ potentiometer between OUT and GND. This provides ±15mV (±0.6%) trim range at the +2.5V output - sufficient for system-level calibration without degrading the 20ppm/°C temperature coefficient or 20ppm/1000hr long-term stability. The TRIM function is fully characterized and supported across -40°C to +125°C.
How does the noise performance of MAX6220ASA-2.5+T compare across frequency bands?
MAX6220ASA-2.5+T delivers 1.5µVp-p (0.1Hz–10Hz) low-frequency noise ideal for precision weighing and strain measurement, and 1.3µVRMS (10Hz–1kHz) broadband noise suitable for audio-grade DAC references. Adding a 1µF capacitor to the NR pin reduces wideband noise further, while the device maintains >85dB supply ripple rejection at 1kHz - a combination not achievable with standard bandgap references.
Is MAX6220ASA-2.5+T qualified for automotive applications?
Yes, MAX6220ASA-2.5+T is rated for the full automotive temperature range of -40°C to +125°C and meets AEC-Q100 stress-test requirements per Maxim's qualification report. Its buried-zener architecture, 20ppm/°C tempco, and 20ppm/1000hr long-term stability are validated across this range - making it suitable for engine control, transmission, and ADAS subsystems where reference stability directly impacts functional safety compliance.
MAX6220ASA-2.5+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):
- 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+T FAQ
1.How can I place an order for MAX6220ASA-2.5+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6220ASA-2.5+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-2.5+T reliable?
The price and inventory of MAX6220ASA-2.5+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-2.5+T is usually 5 days.
3.What payment methods are accepted for MAX6220ASA-2.5+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6220ASA-2.5+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6220ASA-2.5+T?
MAX6220ASA-2.5+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6220ASA-2.5+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-2.5+T?
For technical support, including MAX6220ASA-2.5+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6220ASA-2.5+T requirements.
6.How does Aetrix verify that MAX6220ASA-2.5+T is sourced from the original manufacturer or authorized distributors?
All MAX6220ASA-2.5+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-2.5+T meets industry standards.
7.What is the process for return or replacement of MAX6220ASA-2.5+T?
All MAX6220ASA-2.5+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6220ASA-2.5+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-2.5+T part is unused and in its original packaging.
Return procedure for MAX6220ASA-2.5+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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