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Analog Devices Inc./Maxim Integrated MAX6250AESA+
- Part No.:
- MAX6250AESA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6250AESA+.pdf
- Description:
- IC VREF SERIES 0.02% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,773
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Product details
Overview
MAX6250AESA+ from Maxim Integrated is a precision 5.000V buried-zener voltage reference IC with ±0.02% initial accuracy, 3.0ppm/°C max temperature coefficient (–40°C to +85°C), and 3.0µVP-P (0.1Hz–10Hz) output noise - designed for high-resolution ADC/DAC biasing and metrology-grade instrumentation.
For engineers reviewing the MAX6250AESA+ datasheet, MAX6250AESA+ pinout, MAX6250AESA+ application, or MAX6250AESA+ 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 support.
Technical Context
The MAX6250AESA+ 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.
It features dedicated NR (noise reduction) and TRIM pins enabling wideband noise filtering via 1µF capacitor and ±30mV (±0.6%) output adjustment using a 10kΩ potentiometer - both functions fully decoupled from temperature drift performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000V ±1mV at +25°C - enables direct interface with 16-bit SAR and sigma-delta ADCs requiring exact 5V reference. |
| Tempco (Max) | 3.0ppm/°C over –40°C to +85°C - ensures ≤±0.375mV total drift across full industrial range. |
| Initial Accuracy | ±0.02% (±1mV) - eliminates need for system-level calibration in precision measurement front-ends. |
| Output Noise | 3.0µVP-P (0.1Hz–10Hz), 2.5µVRMS (10Hz–1kHz) - preserves SNR in 16-bit+ data converters. |
| Load Regulation | ≤7ppm/mA sourcing (0–15mA), ≤7ppm/mA sinking (–15–0mA) - maintains voltage integrity under dynamic load switching. |
| Supply Current | 2.0–3.3mA typical - enables low-power operation in battery-backed or energy-constrained systems. |
| Long-Term Stability | 20ppm/1000h - ensures reference integrity over multi-year deployment in test equipment and process controllers. |
Pinout & Package
MAX6250AESA+ is housed in an 8-pin SO (Small Outline) package, RoHS-compliant, with 1.27mm pitch and standard JEDEC MS-012 footprint (S8+5 outline).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8 | I.C. (Internally Connected) | No connection required; must be left unconnected per datasheet - not usable for routing or grounding. |
| 2 | IN | Positive supply input (8V–36V); accepts unregulated rails - internal regulation rejects >60dB ripple up to 10kHz. |
| 3 | NR | Noise reduction node; adding 1µF capacitor reduces wideband noise - no effect on DC accuracy or tempco. |
| 4 | GND | Analog ground reference; requires low-impedance connection to minimize noise coupling into reference output. |
| 5 | TRIM | External voltage adjust input; supports ±30mV trim range via 10kΩ pot - does not degrade temperature stability. |
| 6 | OUT | 5.000V precision reference output; capable of sourcing/sinking ±15mA while maintaining <10ppm line/load regulation. |
Key Features
| Feature | Design Value |
|---|---|
| Buried-zener core | Delivers lowest 1/f noise floor (3.0µVP-P) among 5V references - critical for sub-16-bit noise floors. |
| Optional NR pin | Enables 1µF capacitor placement to suppress broadband noise without affecting settling time or DC accuracy. |
| Trim-adjustable output | Supports ±30mV (±0.6%) fine-tuning via external potentiometer - retains full tempco and stability specs. |
| Capacitive-load tolerant | Stable with 0–100µF output capacitance - eliminates need for isolation resistors in noisy environments. |
| High transient immunity | Settles within 10µs to ±0.01% after load step - prevents reference droop during fast ADC sampling bursts. |
Applications
| High-Resolution Data Acquisition | Digital Voltmeter (DVM) |
|---|---|
|
Use Scenario: 16-bit delta-sigma ADC front-end in portable multimeter with auto-ranging and dual-slope integration. IC Role / Device Role / Timing Role: Primary 5.000V reference for ADC conversion and internal DAC calibration. Use Value: ±0.02% initial accuracy and 3.0ppm/°C tempco ensure 0.005% full-scale accuracy over temperature without recalibration. |
Use Scenario: Benchtop 6½-digit DVM requiring traceable 5V reference for autoranging and ratio-metric measurements. IC Role / Device Role / Timing Role: Stable 5.000V reference source for integrator and comparator thresholds. Use Value: 20ppm/1000h long-term stability meets ANSI C12.20 Class 0.1 metering standards for field-deployed units. |
| ATE Reference Subsystem | Precision Current Source |
|
Use Scenario: Channel reference in automated test equipment validating 16-bit DAC linearity and gain error. IC Role / Device Role / Timing Role: Low-noise, high-current reference driving DAC VREF inputs and feedback networks. Use Value: ±15mA sourcing/sinking capability enables direct drive of multiple DACs without buffer amplifiers. |
Use Scenario: Setpoint reference in programmable 4–20mA transmitter with HART modulation and loop diagnostics. IC Role / Device Role / Timing Role: Precision 5V reference for op-amp-based current mirror and sense resistor scaling. Use Value: Load regulation ≤7ppm/mA ensures <0.001% current error across full 20mA span despite sensor lead resistance variation. |
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, but higher 4.5µVP-P noise and only ±10mA output drive. | Limited sourcing capability restricts use in multi-DAC or high-current buffer designs. | Prefer MAX6250AESA+ when ≥±15mA drive or <3.0µVP-P noise is required. |
| REF5050AIDR | 5.0V output, 3ppm/°C max tempco, but 10µVP-P noise and no NR pin - requires external RC filtering. | Higher noise and lack of integrated noise reduction increase BOM count and layout complexity. | Prefer MAX6250AESA+ for metrology-grade noise performance and simplified layout with NR pin. |
Compared with ADR4550BRZ and REF5050AIDR, the MAX6250AESA+ delivers superior noise performance (3.0µVP-P vs. ≥4.5µVP-P), higher output current (±15mA vs. ≤±10mA), and integrated noise-reduction capability - making it optimal for 16-bit+ converter systems where reference integrity directly limits system ENOB.
Availability
MAX6250AESA+ is available at Aetrix Electronics and suitable for high-resolution data acquisition, digital voltmeter design, and ATE reference subsystems requiring stable component supply with full industrial temperature range support.
Supply support for MAX6250AESA+ 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.
The MAX62xx family targets metrology-grade voltage references - engineered specifically for 16-bit+ data converters, calibration equipment, and industrial control systems demanding ultra-low drift and noise.
FAQ
What is the maximum operating temperature range for the MAX6250AESA+?
The MAX6250AESA+ is rated for operation from –40°C to +85°C, matching the "E" grade temperature specification. This industrial-grade range ensures reliable performance in factory automation, outdoor instrumentation, and embedded control systems exposed to ambient thermal cycling.
Does the MAX6250AESA+ require an external capacitor on the NR pin?
No - the NR pin on the MAX6250AESA+ is optional. Leaving it open provides standard 3.0µVP-P noise performance; adding a 1µF capacitor reduces wideband noise further without affecting DC accuracy, tempco, or settling time - a design choice based on system SNR requirements.
Can the MAX6250AESA+ drive a 10kΩ load directly?
Yes - the MAX6250AESA+ can source up to +15mA and sink up to –15mA. A 10kΩ load at 5V draws only 0.5mA, well within its output capability. Its low output impedance (<1Ω at DC, <10Ω up to 100kHz) ensures minimal voltage drop and excellent regulation under such conditions.
What is the purpose of pins 1, 7, and 8 on the MAX6250AESA+?
Pins 1, 7, and 8 on the MAX6250AESA+ are internally connected (I.C.) and must remain unconnected in the PCB layout. These pins serve no external function and are not intended for grounding, bypassing, or signal routing - connecting them may compromise device reliability or parametric performance.
How does the TRIM pin on the MAX6250AESA+ affect long-term stability?
The TRIM pin on the MAX6250AESA+ allows ±30mV (±0.6%) output adjustment using an external 10kΩ potentiometer, and crucially, this trimming has no impact on long-term stability (20ppm/1000h) or temperature coefficient - both remain fully specified and guaranteed per datasheet.
MAX6250AESA+ 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, 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+ FAQ
1.How can I place an order for MAX6250AESA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6250AESA+ 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+ reliable?
The price and inventory of MAX6250AESA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6250AESA+ is usually 5 days.
3.What payment methods are accepted for MAX6250AESA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6250AESA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6250AESA+?
MAX6250AESA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6250AESA+ 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+?
For technical support, including MAX6250AESA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6250AESA+ requirements.
6.How does Aetrix verify that MAX6250AESA+ is sourced from the original manufacturer or authorized distributors?
All MAX6250AESA+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX6250AESA+?
All MAX6250AESA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6250AESA+, 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+ part is unused and in its original packaging.
Return procedure for MAX6250AESA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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