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Analog Devices Inc./Maxim Integrated MAX875BESA+T
- Part No.:
- MAX875BESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX875BESA+T.pdf
- Description:
- IC VREF SERIES 0.06% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,384
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Product details
Overview
The MAX875BESA+T from Maxim Integrated is a precision +5.0V voltage reference IC with ±0.06% initial accuracy, 20ppm/°C max temperature coefficient, and 14.5µVRMS (10Hz–1kHz) output noise-designed for high-resolution data acquisition in portable test equipment and 12-bit ADC/DAC systems.
For engineers reviewing the MAX875BESA+T datasheet, MAX875BESA+T pinout, MAX875BESA+T application, or MAX875BESA+T equivalent, this page delivers verified specifications, SO-8 package layout, TRIM/TEMP functionality, load regulation behavior, and real-world selection guidance against comparable references.
Technical Context
The MAX875BESA+T implements a laser-trimmed BiCMOS bandgap core with curvature correction, enabling stable +5.0V output across –40°C to +85°C while maintaining 4ppm/V line regulation and 15ppm/mA load regulation. Its TEMP pin delivers 630mV at +25°C with 2.1mV/°C sensitivity for external compensation.
It features a dedicated TRIM pin allowing ±6% output adjustment via external potentiometer, supports sourcing up to 10mA and sinking 2mA, and operates from +7V to +18V input-making it suitable for systems where supply headroom and thermal drift must be tightly controlled without external op-amps.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +5.000V nominal, ±0.06% initial accuracy (±3mV) at +25°C |
| Temp Coefficient | 20ppm/°C max - ensures ≤1mV drift over 0°C to 70°C industrial range |
| Noise (10Hz–1kHz) | 14.5µVRMS - compatible with 12-bit SAR ADCs requiring <1 LSB noise floor |
| Quiescent Current | 450µA max - enables >1-year battery life in low-power portable DMMs |
| Line Regulation | 4ppm/V max - holds output stable despite ±10% input variation in +15V rails |
| Load Regulation | 15ppm/mA max sourcing - maintains accuracy under 10mA sensor bias loads |
| Supply Range | +7V to +18V - accommodates unregulated DC-DC outputs with ripple margin |
| TRIM Range | ±300mV (±6%) - allows calibration to system-specific 4.995V–5.005V targets |
Pinout & Package
MAX875BESA+T uses an 8-pin SOIC (SO-8, package code S8-4), 150-mil width, with exposed pad not electrically connected. Pins 1 and 8 are internally connected (I.C.) and must remain unconnected on PCB; Pin 7 is no-connect (N.C.).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 2: IN | Positive power-supply input | Accepts +7V to +18V; requires 0.1µF ceramic bypass to GND for optimal transient rejection |
| Pin 3: TEMP | Temperature-proportional analog output | 630mV at +25°C, 2.1mV/°C slope - used for die-temp monitoring or compensation networks |
| Pin 4: GND | Analog ground reference | Must be low-impedance star point; separates from digital ground to avoid noise coupling |
| Pin 5: TRIM | Voltage-adjust input | Connects to center tap of 100kΩ pot between OUT and GND for ±6% fine-tuning |
| Pin 6: OUT | Precision +5.0V reference output | Sources 10mA / sinks 2mA; stable with capacitive loads up to 100µF |
Key Features
| Feature | Design Value |
|---|---|
| Low-drift curvature-corrected bandgap | 20ppm/°C max tempco achieved via on-chip laser trimming and BiCMOS process |
| Integrated temperature sensor | TEMP pin provides factory-calibrated 2.1mV/°C output-no external components needed for thermal compensation |
| Adjustable output voltage | TRIM pin enables ±6% output tuning using only one 100kΩ potentiometer |
| High PSRR at low frequency | –80dB PSRR at 10Hz improves immunity to switching regulator ripple in mixed-signal systems |
| Short-circuit protected output | Self-limits to 60mA sink-to-GND and 3mA sink-to-IN-prevents latch-up during board bring-up |
| Long-term stability | 50ppm/kh drift ensures calibration holdover for >12 months in field-deployed instrumentation |
Applications
| Digital Multimeter (DMM) | Portable Data-Acquisition System |
|---|---|
Use Scenario: High-accuracy 5½-digit handheld DMM measuring DC voltage with auto-ranging and battery operation. IC Role / Device Role / Timing Role: Primary 5.0V reference for dual-slope ADC and LCD bias generation. Use Value: ±0.06% initial accuracy and 20ppm/°C drift enable 0.01% measurement repeatability across 0°C–50°C ambient. |
Use Scenario: Battery-powered 12-bit data logger capturing sensor signals (thermocouples, strain gauges) in remote locations. IC Role / Device Role / Timing Role: Stable excitation and reference source for sigma-delta ADC front-end. Use Value: 14.5µVRMS noise and 450µA quiescent current support >10-hour runtime and sub-LSB quantization error. |
| Low-Power Test Equipment | 12-Bit ADC/DAC Reference Subsystem |
Use Scenario: Benchtop calibrator generating precise DC levels for sensor transducer verification. IC Role / Device Role / Timing Role: Programmable reference node in feedback loop of precision voltage source. Use Value: TRIM pin allows factory calibration to ±0.01% absolute accuracy; TEMP pin enables ambient drift compensation. |
Use Scenario: Industrial PLC analog I/O module requiring simultaneous 12-bit ADC and DAC conversion. IC Role / Device Role / Timing Role: Shared 5.0V reference for both converter cores to eliminate gain mismatch. Use Value: Matched line/load regulation (4ppm/V, 15ppm/mA) ensures <0.02% channel-to-channel gain error across 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 |
|---|---|---|---|
| REF5050IDR | 0.05% initial accuracy, 3ppm/°C tempco, 5.0V output, SO-8, but 950µA IQ and no TEMP/TRIM pins | Better drift spec but lacks on-board temperature sensing and adjustability-requires external circuitry for compensation | Choose REF5050IDR when ultra-low drift dominates over power and integration; avoid if TRIM/TEMP functionality is required. |
| ADR4550BRZ | 0.02% initial accuracy, 3ppm/°C tempco, 5.0V output, SO-8, 950µA IQ, no TEMP/TRIM, higher cost | Superior accuracy and drift, but no integrated trim or temperature output-designed for metrology-grade fixed-reference use | Choose ADR4550BRZ for lab-grade instruments where calibration stability outweighs size/power constraints; not suitable for embedded compensation. |
Compared with REF5050IDR and ADR4550BRZ, the MAX875BESA+T trades minor drift penalty (20ppm/°C vs. 3ppm/°C) for integrated TRIM and TEMP functions, 450µA IQ, and lower system BOM count-making it optimal for space-constrained, self-compensating portable instrumentation.
Availability
MAX875BESA+T is available at Aetrix Electronics and suitable for digital multimeters, portable data-acquisition systems, and low-power test equipment requiring stable component supply, long-term calibration retention, and integrated thermal compensation.
Supply support for MAX875BESA+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, medical, and test equipment applications.
The MAX875BESA+T belongs to the MAX873/MAX875/MAX876 family of low-power, low-drift voltage references-engineered specifically for battery-operated and thermally variable environments where accuracy, noise, and integration must coexist.
FAQ
What is the maximum input voltage rating for the MAX875BESA+T?
The MAX875BESA+T has an absolute maximum input voltage of +20V on the IN pin relative to GND. However, its specified operating range is +7V to +18V. Exceeding +18V may degrade long-term reliability or cause parametric shift, even if within absolute maximum limits. Always maintain ≥2V headroom between IN and OUT to ensure proper dropout margin under load.
Does the MAX875BESA+T require an output capacitor for stability?
No, the MAX875BESA+T is inherently stable without an output capacitor and remains stable with capacitive loads up to 100µF. An output capacitor is optional and recommended only to improve transient response during large load steps-e.g., 1µF X7R ceramic placed close to the OUT and GND pins reduces undershoot by ~70% during 0–10mA sourcing transitions.
How does the TEMP pin function in the MAX875BESA+T?
The TEMP pin on the MAX875BESA+T outputs a voltage proportional to die temperature: 630mV at +25°C with a slope of 2.1mV/°C. It is designed for direct connection to an ADC input or op-amp compensator-no external components needed. Loading the TEMP pin with >10kΩ impedance preserves accuracy; self-heating effects are negligible below 100µA sink/source.
Can the MAX875BESA+T be used as a 10mA current source?
The MAX875BESA+T is rated to source up to 10mA into a load tied between OUT and GND, provided the input-output differential remains ≥2V and junction temperature stays within –40°C to +125°C. At 10mA load, output voltage drops by ≤150µV due to 15ppm/mA load regulation-well within its ±3mV initial tolerance. Do not exceed 10mA continuously without verifying thermal derating.
What is the purpose of the TRIM pin on the MAX875BESA+T?
The TRIM pin on the MAX875BESA+T enables ±6% adjustment of the nominal +5.0V output using a simple resistive divider-typically a 100kΩ potentiometer between OUT and GND, with wiper connected to TRIM. This allows post-assembly calibration to compensate for PCB trace resistance, ADC offset, or system-level gain errors without redesigning the reference network.
MAX875BESA+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):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.06%
- Temperature Coefficient:
- 20ppm/°C
- Noise - 0.1Hz to 10Hz:
- 9µVp-p
- Noise - 10Hz to 10kHz:
- 14.5µVrms
- Voltage - Input:
- 7V ~ 18V
- Current - Supply:
- 700µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX875BESA+T FAQ
1.How can I place an order for MAX875BESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX875BESA+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 MAX875BESA+T reliable?
The price and inventory of MAX875BESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX875BESA+T is usually 5 days.
3.What payment methods are accepted for MAX875BESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX875BESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX875BESA+T?
MAX875BESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX875BESA+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 MAX875BESA+T?
For technical support, including MAX875BESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX875BESA+T requirements.
6.How does Aetrix verify that MAX875BESA+T is sourced from the original manufacturer or authorized distributors?
All MAX875BESA+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 MAX875BESA+T meets industry standards.
7.What is the process for return or replacement of MAX875BESA+T?
All MAX875BESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX875BESA+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 MAX875BESA+T part is unused and in its original packaging.
Return procedure for MAX875BESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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