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Analog Devices Inc./Maxim Integrated MAX6225ACSA+T
- Part No.:
- MAX6225ACSA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6225ACSA+T.pdf
- Description:
- IC VREF SERIES 0.04% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,705
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Product details
Overview
MAX6225ACSA+T from Maxim Integrated is a precision 2.500V buried-zener voltage reference IC with 1.0ppm/°C max temperature coefficient, ±0.02% initial accuracy, and 1.5µVP-P (0.1Hz–10Hz) output noise-designed for high-resolution ADC/DAC biasing in metrology-grade instrumentation and ATE systems.
For engineers reviewing the MAX6225ACSA+T datasheet, MAX6225ACSA+T pinout, MAX6225ACSA+T application, or MAX6225ACSA+T equivalent, key selection criteria include guaranteed ±15mA sourcing/sinking capability, 8-pin SO package compatibility, low 18mW power consumption at +25°C, and optional external trim/noise reduction support.
Technical Context
The MAX6225ACSA+T employs buried-zener core technology with on-chip temperature compensation to achieve laboratory-grade stability without heater power. Its output remains stable across capacitive loads from 0µF to 100µF and supports both sourcing and sinking up to ±15mA while maintaining <6ppm/mA load regulation (0–15mA, +25°C).
It features dedicated NR and TRIM pins enabling wideband noise reduction via 1µF capacitor and ±15mV (±0.6%) output adjustment without degrading temperature coefficient. Transient response settles within 5µs to ±0.01% of final value, supporting fast-switching data acquisition systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500V ±1mV at +25°C - ensures sub-LSB error in 16-bit systems (±0.02% initial accuracy) |
| Tempco | 1.0ppm/°C max (0°C to +70°C) - enables ≤2.5µV drift over full industrial range |
| Output Noise | 1.5µVP-P (0.1Hz–10Hz) - critical for low-frequency precision measurements |
| Load Current | ±15mA sourcing/sinking - drives heavy loads without external buffers |
| Line Regulation | 2ppm/V (10V–36V input) - rejects supply ripple in unregulated rails |
| Long-Term Stability | 20ppm/1000h - maintains calibration integrity in field-deployed equipment |
| Power Dissipation | 18mW typical at +25°C - enables compact PCB layout without thermal derating |
Pinout & Package
MAX6225ACSA+T is housed in an 8-pin SO (Small Outline) package per JEDEC MS-012, RoHS-compliant, with 1.27mm pitch and exposed pad not present. Pin 1 is marked by notch or dot; pins 1, 7, and 8 are internally connected and must remain unconnected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8 | I.C. (Internally Connected) | No external connection required; floating or tied to GND has no effect |
| 2 | IN | Positive supply input (8V–36V); requires local bypass capacitor for noise rejection |
| 3 | NR | Noise reduction node; connect 1µF capacitor to GND to reduce wideband noise |
| 4 | GND | Analog ground reference; star-point connection recommended for low-noise layout |
| 5 | TRIM | External voltage adjust input; ±15mV trim range via 10kΩ potentiometer |
| 6 | OUT | Stable 2.500V reference output; capable of sourcing/sinking ±15mA |
Key Features
| Feature | Design Value |
|---|---|
| Buried-zener core | Delivers lowest 1.5µVP-P noise in 0.1Hz–10Hz band-essential for DC metrology |
| Trim-adjustable output | ±15mV (±0.6%) fine-tuning without affecting tempco or long-term stability |
| Noise-reduction pin (NR) | 1µF capacitor reduces broadband noise; eliminates need for external filtering stages |
| Capacitive-load immunity | Stable with 0–100µF output capacitance-enables direct decoupling at point-of-load |
| Fast turn-on settling | 5µs to ±0.01% - supports high-throughput sampling in automated test equipment |
Applications
| High-Resolution Data Converters | Digital Voltmeters |
|---|---|
Use Scenario: Biasing 16-bit SAR ADCs in portable calibrators where thermal drift must be <1 LSB over 0°C–70°C. IC Role / Device Role / Timing Role: Primary voltage reference source providing stable 2.500V reference for ADC VREF input. Use Value: 1.0ppm/°C tempco and 20ppm/1000h stability ensure measurement repeatability without recalibration. | Use Scenario: Reference element in handheld 6½-digit DVMs requiring <10ppm absolute accuracy over 24h. IC Role / Device Role / Timing Role: Precision DC reference for autoranging analog front-end and offset correction circuitry. Use Value: 1.5µVP-P low-frequency noise prevents digitization uncertainty in slow-sampling modes. |
| ATE Equipment | Precision Current Sources |
Use Scenario: Reference for programmable current sources in semiconductor wafer probers operating at 100ksps. IC Role / Device Role / Timing Role: Stable excitation reference for DAC-controlled current mirrors driving DUTs. Use Value: ±15mA sourcing/sinking capability eliminates buffer amplifiers, reducing board area and thermal drift. | Use Scenario: Setpoint reference in 4–20mA loop transmitters for process control sensors. IC Role / Device Role / Timing Role: Fixed 2.500V reference feeding op-amp-based Howland current source. Use Value: Load regulation of ≤6ppm/mA ensures current accuracy remains unaffected by sensor cable impedance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR441BRZ | 2.500V output, 1.5ppm/°C max tempco, higher 3.5µVP-P noise, 10mA max output | Limited sink capability; unsuitable for bidirectional current-driven references | Prefer MAX6225ACSA+T when ±15mA drive or sub-2µV noise is required |
| REF5025ID | 2.500V output, 3ppm/°C max tempco, 1.8µVP-P noise, 10mA max output, no NR pin | No noise-reduction option; less stable under varying capacitive loads | Choose MAX6225ACSA+T for metrology-grade stability and design flexibility with NR/TRIM |
Compared with ADR441BRZ and REF5025ID, the MAX6225ACSA+T delivers superior noise performance, wider output current capability, and integrated noise-reduction architecture-making it optimal for high-fidelity data acquisition where reference-induced errors must be minimized.
Availability
MAX6225ACSA+T is available at Aetrix Electronics and suitable for high-resolution analog-to-digital converters, digital voltmeters, and ATE equipment requiring stable component supply with guaranteed long-term calibration integrity.
Supply support for MAX6225ACSA+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 is a U.S.-based semiconductor company specializing in high-performance analog and mixed-signal ICs for precision, power, and interface applications.
The MAX6225 belongs to Maxim's precision voltage reference product line, engineered for metrology-grade stability in test and measurement, industrial automation, and high-end data conversion systems.
FAQ
What is the maximum input voltage rating for the MAX6225ACSA+T?
The MAX6225ACSA+T supports an input voltage range of 8V to 36V. Absolute maximum rating for the IN pin is +40V, but operation above 36V is not characterized or guaranteed. Exceeding the specified 36V upper limit may compromise long-term reliability and parametric performance, including tempco and noise behavior. Always maintain VIN within 8V–36V for full specification compliance in designs using MAX6225ACSA+T.
Does the MAX6225ACSA+T require an external capacitor on the NR pin?
No, the NR pin on the MAX6225ACSA+T is optional: leaving it open provides standard performance, while connecting a 1µF capacitor to GND reduces wideband noise significantly. Larger values (e.g., >2.2µF) yield diminishing returns per the datasheet. The NR function does not affect output voltage accuracy or temperature coefficient. This flexibility allows designers to optimize MAX6225ACSA+T for either minimal BOM count or ultra-low-noise operation.
Can the MAX6225ACSA+T sink current, and how much?
Yes, the MAX6225ACSA+T can both source and sink up to ±15mA continuously-verified across its 0°C to +70°C operating range. Sink capability enables use in active current-sense references, bipolar DAC buffers, and feedback loops requiring bidirectional current flow. Load regulation remains ≤6ppm/mA during sinking (0 to −15mA), ensuring high fidelity even under dynamic load conditions in systems utilizing MAX6225ACSA+T.
What is the purpose of the TRIM pin on the MAX6225ACSA+T?
The TRIM pin on the MAX6225ACSA+T enables ±15mV (±0.6%) output voltage adjustment using a 10kΩ potentiometer between OUT and GND, with the wiper connected to TRIM. This external trimming does not degrade temperature coefficient or long-term stability. It supports system-level calibration to compensate for PCB trace resistance, DAC gain error, or sensor offset-making MAX6225ACSA+T adaptable to end-equipment tolerances without custom factory programming.
Is the MAX6225ACSA+T compatible with ceramic output capacitors?
Yes, the MAX6225ACSA+T is stable with ceramic, tantalum, or electrolytic output capacitors ranging from 0µF to 100µF-no minimum ESR requirement. This eliminates the need for damping resistors or specialized capacitor types in space-constrained layouts. Ceramic capacitors are especially recommended for low-inductance, high-frequency decoupling near the OUT pin. Full stability is maintained across all load currents, confirming robustness in real-world MAX6225ACSA+T implementations.
MAX6225ACSA+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, Buried Zener
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.04%
- Temperature Coefficient:
- 2ppm/°C
- Noise - 0.1Hz to 10Hz:
- 1.5µVp-p
- Noise - 10Hz to 10kHz:
- 1.3µVrms
- Voltage - Input:
- 8V ~ 36V
- Current - Supply:
- 3mA
- Current - Cathode:
- -
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX6225ACSA+T FAQ
1.How can I place an order for MAX6225ACSA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6225ACSA+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 MAX6225ACSA+T reliable?
The price and inventory of MAX6225ACSA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6225ACSA+T is usually 5 days.
3.What payment methods are accepted for MAX6225ACSA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6225ACSA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6225ACSA+T?
MAX6225ACSA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6225ACSA+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 MAX6225ACSA+T?
For technical support, including MAX6225ACSA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6225ACSA+T requirements.
6.How does Aetrix verify that MAX6225ACSA+T is sourced from the original manufacturer or authorized distributors?
All MAX6225ACSA+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 MAX6225ACSA+T meets industry standards.
7.What is the process for return or replacement of MAX6225ACSA+T?
All MAX6225ACSA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6225ACSA+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 MAX6225ACSA+T part is unused and in its original packaging.
Return procedure for MAX6225ACSA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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