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Analog Devices Inc./Maxim Integrated MAX6250AESA+T
- Part No.:
- MAX6250AESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6250AESA+T.pdf
- Description:
- IC VREF SERIES 0.02% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,300
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Product details
Overview
MAX6250AESA+T from Maxim Integrated is a precision 5.000V buried-zener voltage reference IC with 1.5ppm/°C max temperature coefficient (−40°C to +85°C), ±0.02% initial accuracy, and 3.0µVP-P (0.1Hz–10Hz) output noise-designed for high-resolution ADC/DAC biasing in metrology-grade instrumentation and ATE systems.
For engineers reviewing the MAX6250AESA+T datasheet, MAX6250AESA+T pinout, MAX6250AESA+T application, or MAX6250AESA+T equivalent, key selection criteria include guaranteed ±15mA sourcing/sinking capability, 8-pin SO package compatibility, low 20ppm/1000h long-term stability, and optional external trim/noise-reduction functionality.
Technical Context
The MAX6250AESA+T employs buried-zener core technology with on-chip temperature compensation to achieve near-zero curvature across −40°C to +85°C. Its output stage delivers low dynamic impedance (<1Ω at 10kHz) and stable performance into capacitive loads up to 100µF without oscillation.
It supports dual-path noise reduction: internal wideband filtering plus external 1µF capacitor on NR pin for sub-10Hz noise suppression. Trim input enables ±30mV (±0.6%) adjustment without degrading temperature coefficient or long-term drift.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000V ±1mV at +25°C - ensures direct compatibility with 5V-rail data converters and eliminates system-level gain calibration. |
| Tempco (Max) | 1.5ppm/°C over −40°C to +85°C - enables <±25ppm total drift across full industrial range, critical for 16-bit+ systems. |
| Initial Accuracy | ±0.02% (±1mV) - reduces zero-error contribution in precision measurement front-ends before trimming. |
| Output Noise | 3.0µVP-P (0.1Hz–10Hz), 2.5µVRMS (10Hz–1kHz) - preserves SNR in low-frequency sensor signal chains and digital voltmeters. |
| Load Regulation | ±6ppm/mA sourcing (0–15mA), ±7ppm/mA sinking (−15–0mA) - maintains reference integrity under dynamic load switching in multiplexed DAQ systems. |
| Supply Current | 2.0–3.3mA at +25°C - enables low-power operation in battery-backed calibration modules and portable test equipment. |
| Long-Term Stability | 20ppm/1000h - guarantees <±50ppm drift over 5 years, supporting unattended field-deployed instrumentation. |
Pinout & Package
MAX6250AESA+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 electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8 | I.C. (Internally Connected) | No external connection required; internally bonded but unused-must be left floating or grounded per layout best practice. |
| 2 | IN | Positive supply input (8V–36V); requires ≥1µF bypass capacitor to GND for ripple rejection >60dB above 100Hz. |
| 3 | NR | Noise reduction node; connect 1µF capacitor to GND to reduce 0.1–10Hz noise by >50%; open-circuit if unused. |
| 4 | GND | Analog ground reference; must be star-connected to minimize ground bounce in mixed-signal PCBs. |
| 5 | TRIM | External voltage-adjustment input; accepts 0–5V differential to shift output ±30mV via 10kΩ potentiometer. |
| 6 | OUT | Stable 5.000V reference output; capable of sourcing/sinking ±15mA while maintaining <±25ppm regulation error. |
Key Features
| Feature | Design Value |
|---|---|
| Buried-zener core with curvature-compensated bias | Delivers flat temperature response (±0.5mV max deviation) without oven control or high quiescent power. |
| Guaranteed ±15mA bidirectional output drive | Eliminates need for external buffer op-amps in current-source references and multi-channel DAC reference distribution. |
| Stable with 0–100µF capacitive loads | Permits direct use with large bulk decoupling caps on ADC analog supplies without phase-margin risk. |
| Optional external trim and noise reduction | Enables field calibration and application-specific noise tailoring without redesigning reference circuitry. |
| 20ppm/1000h long-term stability | Supports 10-year calibration intervals in metrology equipment and reduces recalibration labor costs. |
Applications
| High-Resolution Data Acquisition | Digital Voltmeter (DVM) Front-End |
|---|---|
Use Scenario: 16-bit SAR ADC sampling thermocouple or strain-gauge signals in industrial PLC modules. IC Role / Device Role / Timing Role: Primary voltage reference for ADC VREF input, establishing absolute measurement scale. Use Value: 1.5ppm/°C tempco and 3.0µVP-P noise ensure <±0.002% full-scale error across operating temperature and eliminate noise-induced code flicker. |
Use Scenario: 7½-digit bench DVM requiring traceable 5V reference with <1ppm/h drift during auto-calibration cycles. IC Role / Device Role / Timing Role: Master reference source for internal DAC-based null detection and autoranging circuits. Use Value: 20ppm/1000h stability and ±0.02% initial accuracy enable 24-hour unattended measurement repeatability within 10ppm. |
| Automated Test Equipment (ATE) | Precision Current Source Calibration |
Use Scenario: Pin-electronics channel in semiconductor ATE system generating programmable 5V reference for DUT power-supply validation. IC Role / Device Role / Timing Role: Stable excitation source for feedback-controlled PMU voltage rails during parametric testing. Use Value: ±15mA sourcing/sinking capability allows direct driving of 50Ω transmission lines and active load transients without droop or overshoot. |
Use Scenario: Calibrating 4–20mA loop calibrators using a 5V reference to set shunt-voltage thresholds. IC Role / Device Role / Timing Role: Precision voltage source for Kelvin-connected 100Ω precision shunts in metrology labs. Use Value: Load-regulation spec of ±6ppm/mA ensures <±0.001% current error even when shunt resistance varies with temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR4550BRZ | 5.0V output, 3ppm/°C max tempco, 1.75µVP-P noise, 10mA max output, SO-8 package | Lower noise but reduced drive strength and higher tempco; suited for ultra-low-noise, low-current sensor interfaces | Select ADR4550BRZ only when load current ≤10mA and tempco budget allows 3ppm/°C. |
| REF5050AIDR | 5.0V output, 3ppm/°C max tempco, 4.5µVP-P noise, ±10mA output, SO-8 package | Higher noise and lower drive than MAX6250AESA+T; optimized for cost-sensitive industrial sensors | Choose REF5050AIDR where long-term stability >20ppm/1000h is acceptable and board space is constrained. |
Compared with ADR4550BRZ and REF5050AIDR, the MAX6250AESA+T offers superior combination of low tempco (1.5ppm/°C), high output drive (±15mA), and proven long-term stability (20ppm/1000h), making it optimal for ATE, metrology, and high-channel-count DAQ where reference integrity under dynamic load is non-negotiable.
Availability
MAX6250AESA+T is available at Aetrix Electronics and suitable for high-resolution analog-to-digital conversion, automated test equipment, and precision current-source calibration requiring stable component supply and long-lifecycle support.
Supply support for MAX6250AESA+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 high-performance analog and mixed-signal ICs for precision, power, and interface applications, with emphasis on reliability and specification rigor.
The MAX62xx family targets metrology-grade voltage references where laboratory-level accuracy, low noise, and long-term stability are mandatory-specifically for 16-bit+ data converters, calibration standards, and ATE.
FAQ
What is the maximum allowable input voltage for MAX6250AESA+T?
The MAX6250AESA+T supports an input voltage range of 8V to 36V. Absolute maximum rating is +40V on the IN pin, but operation above 36V is not characterized and may compromise long-term reliability or initial accuracy specifications. For robust design, maintain VIN ≤ 36V with ≥1µF ceramic bypass capacitor to GND.
Can MAX6250AESA+T drive a 50Ω load directly?
Yes, the MAX6250AESA+T can source or sink up to ±15mA, enabling direct drive of a 50Ω load at 5V (requiring ±100mA for full swing). However, at ±10mA (500mV drop), regulation error remains within ±6ppm/mA - well within 16-bit LSB tolerance. For sustained ±15mA, verify thermal derating in your SO-8 layout.
Does MAX6250AESA+T require an external capacitor on the NR pin?
No - the NR pin is optional. Leaving it open provides standard 3.0µVP-P (0.1Hz–10Hz) noise. Adding a 1µF capacitor to GND reduces low-frequency noise by ~50%, but larger values yield diminishing returns. Do not connect NR to any voltage rail or active node.
What is the purpose of pins 1, 7, and 8 on MAX6250AESA+T?
Pins 1, 7, and 8 are labeled I.C. (Internally Connected) - they are bonded inside the die but serve no functional purpose in the circuit. Maxim specifies these pins must not be connected externally. Best practice is to leave them unconnected or tie to GND only if required by PCB mechanical constraints, with no electrical impact.
How does the TRIM pin affect the temperature coefficient of MAX6250AESA+T?
The TRIM pin allows ±30mV (±0.6%) output adjustment via external resistor network, but Maxim explicitly states this external trimming "does not affect temperature stability." The 1.5ppm/°C max tempco specification remains fully guaranteed after trim, preserving accuracy across −40°C to +85°C.
MAX6250AESA+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):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.02%
- Temperature Coefficient:
- 3ppm/°C
- Noise - 0.1Hz to 10Hz:
- 3µVp-p
- Noise - 10Hz to 10kHz:
- 2.5µVrms
- Voltage - Input:
- 8V ~ 36V
- Current - Supply:
- 3.3mA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX6250AESA+T FAQ
1.How can I place an order for MAX6250AESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6250AESA+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 MAX6250AESA+T reliable?
The price and inventory of MAX6250AESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6250AESA+T is usually 5 days.
3.What payment methods are accepted for MAX6250AESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6250AESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6250AESA+T?
MAX6250AESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6250AESA+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 MAX6250AESA+T?
For technical support, including MAX6250AESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6250AESA+T requirements.
6.How does Aetrix verify that MAX6250AESA+T is sourced from the original manufacturer or authorized distributors?
All MAX6250AESA+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 MAX6250AESA+T meets industry standards.
7.What is the process for return or replacement of MAX6250AESA+T?
All MAX6250AESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6250AESA+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 MAX6250AESA+T part is unused and in its original packaging.
Return procedure for MAX6250AESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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