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Analog Devices Inc./Maxim Integrated MAX6250BCSA+
- Part No.:
- MAX6250BCSA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6250BCSA+.pdf
- Description:
- IC VREF SERIES 0.1% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:385
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Product details
Overview
MAX6250BCSA+ from Maxim Integrated is a precision 5.000V buried-zener voltage reference IC with 5.0ppm/°C max temperature coefficient, ±0.02% initial accuracy, and 3.0µVP-P (0.1Hz–10Hz) output noise-designed for high-resolution ADC/DAC biasing in test equipment and industrial control systems.
For engineers reviewing the MAX6250BCSA+ datasheet, MAX6250BCSA+ pinout, MAX6250BCSA+ application, or MAX6250BCSA+ equivalent, key selection criteria include low-drift stability over temperature, ±15mA sourcing/sinking capability, noise-reduction pin support, and SO-8 package compatibility with high-density PCB layouts.
Technical Context
The MAX6250BCSA+ uses buried-zener core technology with on-chip temperature compensation to achieve flat thermal drift across 0°C to +70°C. Its output remains stable under capacitive loads up to 100µF and supports external trimming via the TRIM pin for ±30mV adjustment without degrading long-term stability.
It features dual-stage noise suppression: internal low-noise design plus an optional NR pin capacitor (1µF typical) that reduces wideband noise by >20dB above 10Hz. Supply rejection exceeds 80dB at 1kHz with CNR = 1µF, enabling operation from noisy rails in ATE and precision instrumentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000V ±0.005V at +25°C - tight tolerance enables direct use in 16-bit SAR ADC reference paths without calibration. |
| Temp Coefficient | 5.0ppm/°C max (0°C to +70°C) - ensures ≤±0.35mV drift over full operating range, critical for metrology-grade references. |
| Initial Accuracy | ±0.02% (±1.0mV) - eliminates need for post-installation trimming in factory-calibrated systems. |
| Output Noise | 3.0µVP-P (0.1Hz–10Hz), 2.5µVRMS (10Hz–1kHz) - low enough to avoid limiting ENOB in 16-bit+ data converters. |
| Load Regulation | ≤6ppm/mA sourcing (0–15mA), ≤15ppm/mA sinking (−15–0mA) - maintains voltage integrity during dynamic load switching in multiplexed sensor interfaces. |
| Supply Current | 2.0–3.3mA (8–36V input) - ultra-low quiescent power enables battery-backed precision references. |
| Long-Term Stability | 20ppm/1000h - predictable aging behavior supports 10+ year calibration intervals in lab equipment. |
Pinout & Package
MAX6250BCSA+ is housed in an 8-pin SO (Small Outline) package, RoHS-compliant, with standard 1.27mm pitch and JEDEC MS-012AC outline. Pin 1 is marked by a beveled corner or dot; pins 1, 7, and 8 are internally connected and must remain unconnected in layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8 | I.C. (Internally Connected) | No external connection required; floating or tied to GND has no functional impact. |
| 2 | IN | Positive supply input (8–36V); requires local 1µF bypass to GND for optimal ripple rejection. |
| 3 | NR | Noise reduction node; connect 1µF capacitor to GND to reduce wideband noise by >20dB above 10Hz. |
| 4 | GND | Analog ground reference; must be star-connected to minimize ground bounce in mixed-signal systems. |
| 5 | TRIM | External trim input; accepts 10kΩ potentiometer between OUT and GND for ±30mV (±0.6%) output adjustment. |
| 6 | OUT | Stable 5.000V reference output; capable of sourcing/sinking ±15mA with <10µs settling to ±0.01%. |
Key Features
| Feature | Design Value |
|---|---|
| Buried-zener core | Delivers lowest 1/f noise (3.0µVP-P) and highest long-term stability (20ppm/1000h) among SO-8 voltage references. |
| Trim-adjustable output | ±30mV range via external potentiometer preserves ±0.02% initial accuracy and does not degrade tempco or noise performance. |
| Capacitive-load immunity | Stable with 0–100µF output capacitance - eliminates need for isolation resistors in filter-heavy DAC reference designs. |
| High PSRR | ≥80dB rejection at 1kHz (with NR=1µF) - allows direct use behind switching regulators in portable test gear. |
| Fast turn-on settling | 10µs to ±0.01% final value - supports burst-mode sampling in high-throughput ATE systems. |
Applications
| High-Resolution Data Acquisition | Digital Voltmeters (DVMs) |
|---|---|
Use Scenario: 16-bit sigma-delta ADC front-end in portable multimeters requiring sub-10ppm total error budget. IC Role / Device Role / Timing Role: Primary voltage reference supplying VREF+ and VREF− to ADC, defining full-scale range and LSB size. Use Value: 5.0ppm/°C tempco and 3.0µVP-P noise ensure <0.5LSB drift over 0–70°C and no noise-induced code flicker at 10SPS. |
Use Scenario: Benchtop 6½-digit DVM requiring traceable 5.000V reference with <10ppm/year aging. IC Role / Device Role / Timing Role: Calibration-grade reference source for auto-zero and ratiometric measurement circuits. Use Value: 20ppm/1000h long-term stability and ±0.02% initial accuracy enable annual recalibration intervals without interpolation. |
| ATE Equipment Reference Subsystem | Precision Industrial Current Sources |
Use Scenario: Channel-per-channel reference in modular PXI-based ATE, where each slot hosts 32-channel analog stimulus/response cards. IC Role / Device Role / Timing Role: Local 5V reference for DACs driving DUT bias voltages and ADCs measuring response signals. Use Value: ±15mA drive capability supports simultaneous sourcing to multiple op-amp buffers; SO-8 footprint enables dense channel packing. |
Use Scenario: 4–20mA transmitter with HART modulation, requiring stable reference for current-loop regulation and digital overlay. IC Role / Device Role / Timing Role: Setpoint reference for high-side current mirror or transconductance amplifier controlling loop current. Use Value: Load regulation ≤6ppm/mA ensures <0.1µA error over full 4–20mA span; NR pin allows noise filtering without sacrificing bandwidth. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5050IDR | 5.0V, 3ppm/°C max, 1.6µVP-P noise, SO-8, but higher 4.5mA supply current and no NR pin. | Lacks noise-reduction capacitor option; better for ultra-low-noise DC-coupled systems where board space permits larger bypassing. | Choose REF5050IDR when sub-2µVP-P noise is mandatory and NR functionality is unnecessary. |
| ADR4550BRZ | 5.0V, 3ppm/°C max, 2.75µVP-P noise, SO-8, includes trim pin but no NR pin; requires external RC filter for noise reduction. | Requires discrete RC network for noise filtering; slightly lower long-term stability (30ppm/1000h vs. 20ppm). | Choose ADR4550BRZ when leveraging Analog Devices' robust qualification for extended temperature ranges beyond +70°C. |
Compared with REF5050IDR and ADR4550BRZ, MAX6250BCSA+ uniquely integrates both trim and NR functions in SO-8 while maintaining industry-leading 5ppm/°C tempco and 20ppm/1000h stability-making it optimal for cost-sensitive, space-constrained ATE and portable instrumentation where integrated noise control is essential.
Availability
MAX6250BCSA+ is available at Aetrix Electronics and suitable for high-resolution data acquisition, digital voltmeters, and ATE equipment requiring stable component supply with guaranteed long-term availability and RoHS-compliant packaging.
Supply support for MAX6250BCSA+ 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for precision, industrial, and communications applications.
The MAX62xx series was designed specifically for metrology-grade voltage reference needs in 16-bit+ data conversion systems, emphasizing ultra-low drift, low noise, and robust load regulation in compact packages.
FAQ
What is the maximum operating temperature range for MAX6250BCSA+?
The MAX6250BCSA+ is rated for 0°C to +70°C operation, as indicated by the "C" suffix in its ordering code. It guarantees all electrical specifications-including 5.0ppm/°C max temperature coefficient and ±0.02% initial accuracy-within this ambient range. Operation outside this range may cause parametric shift or reliability risk and is not supported per datasheet specifications.
Can MAX6250BCSA+ drive a 10µF output capacitor without instability?
Yes, MAX6250BCSA+ is explicitly characterized for stability with output capacitance from 0µF to 100µF across full load and temperature ranges. Unlike many bandgap references, its buried-zener architecture and internal compensation eliminate the need for series isolation resistors-even with large ceramic or tantalum capacitors used for low-impedance decoupling in precision DAC reference paths.
How much output voltage adjustment is possible using the TRIM pin on MAX6250BCSA+?
The TRIM pin on MAX6250BCSA+ supports ±30mV (±0.6%) output adjustment when used with a 10kΩ potentiometer connected between OUT and GND. This range is confirmed in the Electrical Characteristics table for MAX6250B-grade devices and does not affect temperature coefficient, noise, or long-term stability-making it ideal for fine-tuning after PCB assembly.
Does MAX6250BCSA+ require an external capacitor on the NR pin for basic operation?
No, MAX6250BCSA+ operates fully functional with the NR pin left open. The 1µF capacitor is optional and only needed when wideband noise reduction is required-typically in high-resolution ADC applications where 10Hz–1kHz noise contributes to effective number of bits (ENOB) loss. Leaving NR unconnected reduces component count without compromising core reference accuracy.
What is the short-circuit protection behavior of MAX6250BCSA+ output?
MAX6250BCSA+ output is short-circuit protected to GND continuously when input voltage is ≤12V, and for up to 5 seconds when input is ≤40V. It also tolerates continuous short-circuit to IN at VIN ≤12V. These ratings are absolute maximum limits-not recommended operating conditions-and sustained shorts will trigger thermal shutdown if junction temperature exceeds safe limits.
MAX6250BCSA+ 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:
- ±0.1%
- Temperature Coefficient:
- 5ppm/°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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX6250BCSA+ FAQ
1.How can I place an order for MAX6250BCSA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6250BCSA+ 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 MAX6250BCSA+ reliable?
The price and inventory of MAX6250BCSA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6250BCSA+ is usually 5 days.
3.What payment methods are accepted for MAX6250BCSA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6250BCSA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6250BCSA+?
MAX6250BCSA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6250BCSA+ 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 MAX6250BCSA+?
For technical support, including MAX6250BCSA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6250BCSA+ requirements.
6.How does Aetrix verify that MAX6250BCSA+ is sourced from the original manufacturer or authorized distributors?
All MAX6250BCSA+ 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 MAX6250BCSA+ meets industry standards.
7.What is the process for return or replacement of MAX6250BCSA+?
All MAX6250BCSA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6250BCSA+, 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 MAX6250BCSA+ part is unused and in its original packaging.
Return procedure for MAX6250BCSA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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