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Analog Devices Inc./Maxim Integrated MAX876BESA+T
- Part No.:
- MAX876BESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX876BESA+T.pdf
- Description:
- IC VREF SERIES 0.05% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,733
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Product details
Overview
The MAX876BESA+T from Maxim Integrated is a precision +10.0V voltage reference IC with ±0.05% initial accuracy, 20ppm/°C max temperature coefficient, and 29µVRMS (10Hz–1kHz) output noise-designed for high-resolution data acquisition in portable test equipment and 12-bit ADC/DAC systems requiring stable, low-drift excitation.
For engineers reviewing the MAX876BESA+T datasheet, MAX876BESA+T pinout, MAX876BESA+T application, or MAX876BESA+T equivalent, this page delivers verified electrical specs, SO-8 package layout, TRIM/TEMP functionality, load regulation behavior, and real-world selection guidance against comparable references.
Technical Context
The MAX876BESA+T employs a proprietary curvature-corrected bandgap core with laser-trimmed thin-film resistors to achieve 20ppm/°C max drift over –40°C to +85°C. Its TEMP pin outputs 630mV at +25°C with 2.1mV/°C sensitivity, enabling direct die-temperature monitoring without external sensors.
It operates from +12V to +18V input, sources up to 10mA, sinks up to 2mA, and features internal short-circuit protection limiting output current to 60mA when shorted to GND. The TRIM pin allows ±6% output adjustment using a single 100kΩ potentiometer between OUT and GND.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +10.000V nominal, ±0.05% initial accuracy (±5mV) at +25°C |
| Tempco | 20ppm/°C max over –40°C to +85°C - supports ≤1 LSB error in 12-bit systems across full industrial range |
| Noise (10Hz–1kHz) | 29µVRMS - enables clean sampling in 12-bit data-acquisition systems without added filtering |
| Quiescent Current | 320µA to 700µA - ultra-low power suitable for battery-powered multimeters and portable DAQ |
| Load Regulation | 1ppm/mA max (source), 150ppm/mA max (sink) - maintains stability under dynamic load shifts |
| Line Regulation | 1ppm/V max over +12V to +18V - rejects supply ripple in unregulated or noisy rails |
| TRIM Range | ±6% (±600mV) via external potentiometer - enables field calibration without redesign |
| TEMP Output | 630mV @ +25°C, 2.1mV/°C - provides calibrated die-temperature signal for compensation or thermal warning |
Pinout & Package
MAX876BESA+T is housed in an 8-pin SOIC (SO-8, package code S8-4), 150-mil width, RoHS-compliant lead-free package with standard JEDEC outline MS012. Pin 1 and Pin 8 are internally connected (I.C.) and must remain unconnected on PCB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8 | I.C. (Internally Connected) | No external connection permitted; internal bond wire only |
| 2 | IN | Positive supply input; requires 0.1µF ceramic bypass capacitor near pin for optimal line transient rejection |
| 3 | TEMP | Temperature-proportional analog output (630mV @ +25°C); unbuffered - avoid loading to preserve accuracy |
| 4 | GND | Analog ground reference; must be low-impedance and star-connected to minimize noise coupling |
| 5 | TRIM | Voltage-adjust input; connect to center tap of 100kΩ pot between OUT and GND for ±6% fine-tuning |
| 6 | OUT | +10.0V precision reference output; capable of sourcing 10mA or sinking 2mA with <1ppm/mA regulation |
| 7 | N.C. | No internal connection; leave floating - no pull-up/down required |
Key Features
| Feature | Design Value |
|---|---|
| Low-drift +10V reference | 20ppm/°C max tempco ensures ≤120µV drift over –40°C to +85°C - critical for metrology-grade instruments |
| Integrated temperature sensor | 630mV @ +25°C with 2.1mV/°C slope enables self-compensation circuits without external thermistors or ICs |
| Adjustable output | ±6% trim range via single potentiometer allows factory or field calibration to counter system-level gain errors |
| Low-noise operation | 29µVRMS (10Hz–1kHz) meets SNR requirements for 12-bit ADCs without post-filtering or oversampling |
| Wide supply range | +12V to +18V operation supports use with unregulated DC-DC outputs or legacy industrial supplies |
| Short-circuit protected | 60mA current limit on OUT-to-GND faults prevents latch-up and enables robust system-level fault tolerance |
Applications
| Portable Digital Multimeters | 12-Bit Data Acquisition Systems |
|---|---|
|
Use Scenario: Handheld DMMs requiring stable 10V reference for autoranging ADC front-end and ohms measurement excitation. IC Role / Device Role / Timing Role: Primary voltage reference for SAR ADC and precision DAC used in auto-zero and calibration routines. Use Value: ±0.05% initial accuracy and 20ppm/°C drift ensure 4½-digit resolution remains valid across environmental operating conditions without recalibration. |
Use Scenario: Battery-powered environmental sensor nodes digitizing thermocouple, RTD, or strain-gauge signals. IC Role / Device Role / Timing Role: Excitation and reference source for instrumentation amplifiers and 12-bit sigma-delta ADCs. Use Value: 29µVRMS noise and 320µA quiescent current enable >70dB SNR and multi-day battery life in continuous-sampling mode. |
| Low-Power Test Equipment | Calibration Reference Modules |
|
Use Scenario: Benchtop calibrators generating precise 10V outputs for verifying other instruments' accuracy. IC Role / Device Role / Timing Role: Master reference in closed-loop DAC-based output stage with TEMP-driven thermal compensation. Use Value: TRIM-adjustable ±6% range and long-term drift of 50ppm/kh support traceable, field-serviceable calibration without component replacement. |
Use Scenario: Modular rack-mounted reference units used in automated test systems for semiconductor ATE. IC Role / Device Role / Timing Role: High-stability 10V node shared across multiple channels with minimal crosstalk and load-induced error. Use Value: 1ppm/V line regulation and 1ppm/mA load regulation maintain channel-to-channel matching better than 0.1ppm under varying supply/load conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5010AIDR | +10.0V, 3ppm/°C max, 0.02% initial accuracy, 3.6V–18V supply, 950µA IQ | Lower drift and higher accuracy but 3× higher supply current; requires external decoupling for stability | Select REF5010AIDR when absolute drift performance dominates power budget constraints. |
| ADR445BRZ | +10.0V, 3ppm/°C max, 0.02% initial accuracy, 12V–36V supply, 1.15mA IQ, integrated noise reduction filter | Superior noise (1.2µVRMS) and wider supply range, but larger SOIC-8 footprint and higher cost | Choose ADR445BRZ for ultra-low-noise 16-bit+ systems where board space permits and supply exceeds 12V. |
Compared with REF5010AIDR and ADR445BRZ, the MAX876BESA+T offers the lowest quiescent current (320µA) and integrated TEMP output - making it uniquely suited for portable, thermally compensated, and battery-sensitive 12-bit applications where moderate drift is acceptable.
Availability
MAX876BESA+T is available at Aetrix Electronics and suitable for portable digital multimeters, 12-bit data-acquisition systems, and low-power test equipment requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.
Supply support for MAX876BESA+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, integration, and industrial-grade specifications.
The MAX873/MAX875/MAX876 family was engineered specifically for metrology-grade voltage references in portable and embedded instrumentation, prioritizing low drift, low noise, and on-chip temperature sensing over raw accuracy alone.
FAQ
What is the maximum input voltage for the MAX876BESA+T?
The MAX876BESA+T supports a maximum input voltage of +18V, with guaranteed operation from +12V to +18V per its electrical characteristics table. Absolute maximum rating is +20V on the IN pin relative to GND, but sustained operation above +18V risks parametric shift or reliability degradation. Always use the recommended 0.1µF ceramic bypass capacitor at the IN pin for stability.
Can the MAX876BESA+T be used with a 5V supply?
No - the MAX876BESA+T requires a minimum input voltage of +12V to regulate its +10.0V output, as specified in the "ELECTRICAL CHARACTERISTICS-MAX876" section. A 5V supply falls below the dropout requirement and will prevent proper regulation. For +10V output from lower supplies, consider switching to a boost-based reference or a different family such as the MAX6126 series.
How does the TEMP pin function on the MAX876BESA+T?
The TEMP pin on the MAX876BESA+T outputs a voltage proportional to die temperature: 630mV at +25°C with a slope of 2.1mV/°C. It is unbuffered and intended for low-load applications - draw less than 1µA to avoid measurement error. This signal enables real-time thermal compensation of the reference output or system-level thermal warning without external sensors.
What is the output voltage adjust range for the MAX876BESA+T?
The MAX876BESA+T supports ±6% output adjustment (±600mV around 10.0V) via the TRIM pin using a 100kΩ potentiometer connected between OUT and GND, with the wiper tied to TRIM. This allows fine calibration to counter system-level gain errors or aging effects while maintaining full spec compliance across temperature and load.
Is the MAX876BESA+T pin-compatible with other devices in the MAX87x family?
Yes - the MAX876BESA+T shares identical SO-8 pinout, footprint, and terminal functions with MAX873BESA+ and MAX875BESA+, including IN, GND, TEMP, TRIM, and OUT placement. However, supply voltage ranges differ: MAX873 operates from +4.5V, MAX875 from +7V, and MAX876 from +12V - so direct substitution requires verification of input rail compatibility.
MAX876BESA+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):
- 10V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.05%
- Temperature Coefficient:
- 20ppm/°C
- Noise - 0.1Hz to 10Hz:
- 18µVp-p
- Noise - 10Hz to 10kHz:
- 29µVrms
- Voltage - Input:
- 12V ~ 18V
- Current - Supply:
- 700µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX876BESA+T FAQ
1.How can I place an order for MAX876BESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX876BESA+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 MAX876BESA+T reliable?
The price and inventory of MAX876BESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX876BESA+T is usually 5 days.
3.What payment methods are accepted for MAX876BESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX876BESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX876BESA+T?
MAX876BESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX876BESA+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 MAX876BESA+T?
For technical support, including MAX876BESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX876BESA+T requirements.
6.How does Aetrix verify that MAX876BESA+T is sourced from the original manufacturer or authorized distributors?
All MAX876BESA+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 MAX876BESA+T meets industry standards.
7.What is the process for return or replacement of MAX876BESA+T?
All MAX876BESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX876BESA+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 MAX876BESA+T part is unused and in its original packaging.
Return procedure for MAX876BESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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