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Analog Devices Inc./Maxim Integrated MAX875BESA+
- Part No.:
- MAX875BESA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX875BESA+.pdf
- Description:
- IC VREF SERIES 0.06% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,177
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Product details
Overview
The MAX875BESA+ 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 digital multimeters.
For engineers reviewing the MAX875BESA+ datasheet, MAX875BESA+ pinout, MAX875BESA+ application, or MAX875BESA+ equivalent, this page delivers verified specifications, SO-8 package layout, TRIM/TEMP terminal functions, load regulation behavior (≤20ppm/mA), and real-world selection guidance against comparable 5V references.
Technical Context
The MAX875BESA+ uses a laser-trimmed BiCMOS bandgap core with curvature correction to achieve low drift across –40°C to +85°C. Its TEMP pin provides a 2.1mV/°C proportional voltage for external compensation or monitoring, while the TRIM pin enables ±6% output adjustment via a 100kΩ potentiometer.
It operates from +7V to +18V input, sources up to 10mA and sinks 2mA, and maintains stability without output capacitance-though it tolerates up to 100µF. Line regulation is specified at ≤6ppm/V over full temperature range, and PSRR exceeds 80dB below 10kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +5.000V nominal, ±0.06% initial accuracy (±3mV at +25°C) |
| Tempco | 20ppm/°C max - ensures ≤1mV drift over 0°C to 70°C operating range |
| Noise (10Hz–1kHz) | 14.5µVRMS - supports stable 12-bit ADC performance without additional filtering |
| Quiescent Current | 450µA max - enables multi-year battery life in portable instrumentation |
| Load Regulation | 20ppm/mA max (source), 1900ppm/mA max (sink) - defines output shift under varying load conditions |
| Line Regulation | 6ppm/V max - limits output variation when input supply varies within +7V to +18V |
| TRIM Range | ±300mV (±6%) - allows fine-tuning to compensate for system-level gain errors |
| TEMP Output | 630mV at +25°C, 2.1mV/°C sensitivity - usable for die-temperature sensing or analog compensation |
Pinout & Package
MAX875BESA+ is housed in an 8-pin SOIC (SO-8, package code S8-4), 150-mil width, RoHS-compliant lead-free package. Pin 1 and Pin 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 1, Pin 8 | I.C. (Internally Connected) | Not bonded externally; leave floating-no PCB trace or pad connection permitted |
| Pin 2 (IN) | Positive Supply Input | Accepts +7V to +18V; requires 0.1µF ceramic bypass capacitor placed adjacent to pin |
| Pin 3 (TEMP) | Temperature-Proportional Output | Provides 630mV @ +25°C, 2.1mV/°C slope; high-impedance node-buffer before loading |
| Pin 4 (GND) | Analog Ground Reference | Primary return path for reference output and internal bias; tie directly to clean analog ground plane |
| Pin 5 (TRIM) | Voltage Trim Control | Adjusts output ±6% via resistive divider between OUT and GND; open-circuit = factory-set 5.000V |
| Pin 6 (OUT) | Precision 5.0V Output | Delivers regulated +5.000V; sources 10mA / sinks 2mA; stable with 0–100µF capacitive loads |
| Pin 7 | N.C. (No Connection) | Not bonded internally; must be left unconnected on PCB layout |
Key Features
| Feature | Design Value |
|---|---|
| Low-drift 5V reference | 20ppm/°C max tempco enables <1 LSB error in 12-bit systems over industrial temperature range |
| Integrated TEMP output | 2.1mV/°C analog temperature signal eliminates need for external sensor in compensation circuits |
| Adjustable output | ±6% trim range via single potentiometer supports calibration of downstream gain stages |
| Ultra-low quiescent current | 450µA max enables use in always-on, battery-powered measurement nodes |
| High PSRR | ≥80dB rejection below 10kHz suppresses supply ripple from noisy DC/DC converters |
| Short-circuit protection | 60mA current limit on OUT-to-GND fault prevents damage during board bring-up or field faults |
Applications
| Portable Digital Multimeter | 12-Bit Data Acquisition Module |
|---|---|
|
Use Scenario: Handheld DMM requiring stable 5V reference for dual-slope ADC and LCD bias generation. IC Role / Device Role / Timing Role: Primary voltage reference for analog front-end and display power regulation. Use Value: 20ppm/°C drift and 14.5µVRMS noise ensure consistent 4½-digit accuracy across 0°C–50°C ambient. |
Use Scenario: Battery-powered sensor node digitizing thermocouple and RTD signals using SAR ADC. IC Role / Device Role / Timing Role: Precision excitation and reference source for ratiometric measurements. Use Value: TRIM pin allows one-time calibration to cancel PCB trace resistance errors; TEMP output monitors self-heating impact. |
| Low-Power Test Equipment | Calibration Standard for Field Instruments |
|
Use Scenario: Benchtop calibrator generating precise 5V outputs for verifying process transmitters. IC Role / Device Role / Timing Role: Stable reference backbone for DAC-based output stage and internal self-test circuitry. Use Value: ±0.06% initial accuracy and 50ppm/kh long-term drift support annual recalibration intervals without degradation. |
Use Scenario: Portable field calibrator used to verify pressure and flow transmitters in oil/gas installations. IC Role / Device Role / Timing Role: Primary reference in handheld unit with integrated Li-ion battery and isolated USB interface. Use Value: 450µA quiescent current extends runtime beyond 8 hours per charge; SO-8 package enables compact, ruggedized design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision 5V reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5050AIDR | 12ppm/°C max tempco, 3µVRMS noise, 1mA IQ - tighter spec but higher power and cost | Better suited for 16-bit systems; less ideal for battery-constrained designs | Select REF5050AIDR only if 12-bit requirement is exceeded and supply headroom permits 1mA IQ |
| ADR4550BRZ | 3ppm/°C max tempco, 12µVRMS noise, 950µA IQ - ultra-low drift but double the quiescent current | Preferred for metrology-grade lab equipment; not optimized for portable operation | Choose ADR4550BRZ when thermal stability dominates over battery life and BOM cost |
Compared with REF5050AIDR and ADR4550BRZ, the MAX875BESA+ delivers optimal balance of 12-bit accuracy, sub-500µA power, and SO-8 manufacturability-making it the preferred choice for cost-sensitive, battery-powered instrumentation where 20ppm/°C drift is acceptable.
Availability
MAX875BESA+ is available at Aetrix Electronics and suitable for portable data-acquisition systems, digital multimeters, and low-power test equipment requiring stable component supply with guaranteed long-term continuity.
Supply support for MAX875BESA+ 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 industrial, communications, and consumer applications.
The MAX873/MAX875/MAX876 family was designed specifically for precision voltage referencing in portable and battery-operated instrumentation-emphasizing low drift, low noise, and minimal quiescent current without sacrificing output drive capability.
FAQ
What is the maximum input voltage rating for the MAX875BESA+?
The MAX875BESA+ has an absolute maximum IN-to-GND rating of +20V, but its specified operating range is +7V to +18V. Operation above +18V risks exceeding safe junction temperature or violating line regulation specs. For reliable long-term use, maintain VIN ≤ +18V with adequate PCB thermal relief.
Can the MAX875BESA+ drive a 10kΩ load continuously?
Yes-the MAX875BESA+ sources up to 10mA, so a 10kΩ load drawing 0.5mA at 5V is well within specification. Load regulation is 20ppm/mA max, meaning output shifts by ≤10µV under this load. Ensure GND return path is low-impedance to avoid ground bounce affecting accuracy.
How does the TEMP pin function in the MAX875BESA+?
The TEMP pin on the MAX875BESA+ outputs 630mV at +25°C with a slope of 2.1mV/°C, directly proportional to die temperature. It is intended for temperature compensation or monitoring-not for direct ADC input without buffering, as its output impedance rises above 10kΩ and loading degrades accuracy.
Is the MAX875BESA+ pin-compatible with other devices in the MAX87x family?
Yes-MAX875BESA+, MAX873BESA+, and MAX876BESA+ share identical SO-8 pinouts and terminal functions (IN, GND, TEMP, TRIM, OUT). Only the output voltage and trimmed tempco differ; no PCB redesign is needed when swapping within the B-grade variants for different voltage requirements.
What is the typical turn-on time for the MAX875BESA+?
The MAX875BESA+ settles to within 0.1% of 5.000V in 150µs with no output capacitor. With a 1µF output cap, turn-on time increases to ~300µs due to RC charging. This timing is critical for power-gated systems-designers should allow ≥500µs delay before sampling the reference in firmware-controlled startup sequences.
MAX875BESA+ 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
- 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+ FAQ
1.How can I place an order for MAX875BESA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX875BESA+ 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+ reliable?
The price and inventory of MAX875BESA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX875BESA+ is usually 5 days.
3.What payment methods are accepted for MAX875BESA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX875BESA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX875BESA+?
MAX875BESA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX875BESA+ 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+?
For technical support, including MAX875BESA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX875BESA+ requirements.
6.How does Aetrix verify that MAX875BESA+ is sourced from the original manufacturer or authorized distributors?
All MAX875BESA+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX875BESA+?
All MAX875BESA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX875BESA+, 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+ part is unused and in its original packaging.
Return procedure for MAX875BESA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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