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Analog Devices Inc./Maxim Integrated MAX875AESA
- Part No.:
- MAX875AESA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX875AESA.pdf
- Description:
- IC VREF SERIES 0.04% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,461
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Product details
Overview
The MAX875AESA from Maxim Integrated is a precision +5.0V voltage reference IC with ±0.04% initial accuracy, 7ppm/°C max temperature coefficient, and 450µA max quiescent current, designed for high-stability analog signal chains in portable data-acquisition systems and 12-bit ADC/DAC interfaces.
For engineers reviewing the MAX875AESA datasheet, MAX875AESA pinout, MAX875AESA application, or MAX875AESA equivalent, this page delivers verified electrical parameters, TRIM-adjustable output architecture, TEMP-pin temperature-proportional output, low-noise performance (9µVRMS, 10Hz–1kHz), and SO-8 package compatibility for embedded measurement and test equipment design.
Technical Context
The MAX875AESA employs a laser-trimmed thin-film resistor network and proprietary curvature-correction circuitry to achieve 7ppm/°C max drift over –40°C to +85°C, enabling stable reference operation without external compensation. Its bandgap core is optimized for low thermal hysteresis (120ppm typical) and minimal self-heating effects on the TEMP output.
It supports adjustable output via the TRIM pin (±6% range using 100kΩ potentiometer), sources up to 10mA while sinking 2mA, and maintains 4ppm/V line regulation across its 7V–18V input range - critical for systems powered by unregulated or battery-derived rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +5.000V nominal, ±0.04% initial accuracy (±2mV) at +25°C - ensures <1 LSB error in 12-bit converters over full temp range. |
| Tempco | 7ppm/°C max - translates to ±280µV drift over –40°C to +85°C, meeting tight stability requirements for metrology-grade instruments. |
| Noise (10Hz–1kHz) | 14.5µVRMS typical - low enough to avoid degrading SNR in 12-bit data-acquisition front-ends. |
| Quiescent Current | 450µA max - enables multi-year battery life in portable multimeters and handheld sensors. |
| Line Regulation | 4ppm/V max - limits output variation to ±12µV per volt input change, supporting operation from noisy or varying supplies. |
| Load Regulation | 15ppm/mA max (source), 1900ppm/mA max (sink) - defines output shift under load transients in mixed-signal PCBs. |
| TRIM Range | ±6% (±300mV) - allows fine-tuning to compensate for system-level gain errors or board-level tolerances. |
Pinout & Package
MAX875AESA is housed in an 8-pin SOIC (SO-8, package code S8-4), 3.94mm × 4.90mm body, 1.27mm pitch, lead-free compliant. Pins 1 and 8 are internally connected (do not route); Pin 7 is no-connect.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 2: IN | Positive supply input | Accepts 7V–18V DC; internal LDO structure provides dropout-independent regulation for clean reference generation. |
| Pin 3: TEMP | Temperature-proportional analog output | Outputs 630mV at +25°C with 2.1mV/°C slope - usable for die-temperature monitoring or passive compensation circuits. |
| Pin 4: GND | Analog ground reference | Must be tied to low-impedance system ground plane; separates reference return from power return to minimize noise coupling. |
| Pin 5: TRIM | Voltage-adjust input | Accepts 0V to VOUT; connects to center tap of 100kΩ pot between OUT and GND to adjust output ±6%. |
| Pin 6: OUT | Precision +5.0V reference output | Sources 10mA / sinks 2mA; stable with 0–100µF capacitive loads; no external compensation required. |
Key Features
| Feature | Design Value |
|---|---|
| Low-drift curvature-corrected bandgap | 7ppm/°C max tempco achieved via on-die laser trimming and analog curvature compensation - eliminates need for external thermistors. |
| Integrated TEMP output | 630mV @ +25°C, 2.1mV/°C sensitivity - provides direct die-temperature readout without external sensor or ADC channel. |
| Adjustable output via TRIM pin | ±6% fine-tuning range using single 100kΩ potentiometer - enables calibration to system-level accuracy targets post-assembly. |
| High PSRR | –80dB @ 100Hz, –60dB @ 1kHz - rejects ripple from switching regulators feeding the IN pin, preserving reference integrity. |
| Short-circuit protected output | 60mA current limit when shorted to GND; 3mA limit when shorted to IN - prevents latch-up and enables robust field serviceability. |
Applications
| Portable Digital Multimeter | 12-Bit Data-Acquisition Front-End |
|---|---|
Use Scenario: Handheld DMM requiring stable 5V reference for dual-slope or sigma-delta ADC conversion across –10°C to +50°C ambient. IC Role / Device Role / Timing Role: Primary voltage reference for ADC reference input and internal DAC calibration. Use Value: ±0.04% initial accuracy and 7ppm/°C drift ensure <0.5 LSB total error over operating range without recalibration. |
Use Scenario: Battery-powered sensor node digitizing thermocouple or strain-gauge signals with 12-bit resolution. IC Role / Device Role / Timing Role: Precision reference for SAR ADC and offset-nulling circuitry in analog front-end. Use Value: 14.5µVRMS (10Hz–1kHz) noise and 450µA quiescent current enable >70dB SNR and multi-year battery life. |
| Low-Power Test Equipment | Calibration Reference Subsystem |
Use Scenario: Benchtop calibrator generating precise 5V outputs for verifying instrument accuracy under varying line conditions. IC Role / Device Role / Timing Role: Stable reference source for programmable voltage output stage and self-test circuitry. Use Value: 4ppm/V line regulation and 15ppm/mA load regulation maintain output stability despite AC adapter ripple and load switching. |
Use Scenario: Factory calibration fixture validating 16-bit DAQ modules before shipment, requiring traceable 5V reference. IC Role / Device Role / Timing Role: Primary reference for automated test software comparing DUT output against known standard. Use Value: Long-term drift of 50ppm/kh and thermal hysteresis of 120ppm support annual recalibration intervals without performance degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5050AIDR | 5V output, 3ppm/°C max tempco, 100µA quiescent current, SO-8 - lower drift but higher cost and no TEMP output. | Used in ultra-stable lab equipment where drift dominates error budget; lacks integrated temperature sensing. | Select REF5050AIDR when sub-3ppm/°C drift is mandatory and TEMP functionality is unnecessary. |
| ADR4550BRZ | 5V output, 3ppm/°C max tempco, 950µA quiescent current, SO-8 - superior drift, higher IQ, no TRIM or TEMP pins. | Deployed in high-precision industrial PLC analog I/O modules where supply current is less constrained. | Choose ADR4550BRZ for highest accuracy in mains-powered systems; MAX875AESA preferred for battery operation and trim flexibility. |
Compared with REF5050AIDR and ADR4550BRZ, the MAX875AESA uniquely combines adjustable output (TRIM), die-temperature monitoring (TEMP), and ultra-low quiescent current (450µA max) in a single SO-8 package - making it optimal for portable, self-calibrating, and thermally aware measurement designs.
Availability
MAX875AESA is available at Aetrix Electronics and suitable for portable data-acquisition systems, digital multimeters, and low-power test equipment requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.
Supply support for MAX875AESA 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 application-specific optimization.
The MAX873/MAX875/MAX876 family was engineered specifically for low-drift, low-power voltage referencing in portable and battery-operated instrumentation - prioritizing initial accuracy, thermal stability, and functional integration (TRIM, TEMP) over raw speed or output drive.
FAQ
What is the maximum input voltage for the MAX875AESA?
The MAX875AESA supports a supply voltage range of +7V to +18V on the IN pin. Absolute maximum rating is +20V, but operation above +18V is not characterized and may compromise long-term reliability or parametric performance. For stable 5V reference generation, +12V or +15V supplies are commonly used to ensure sufficient headroom and PSRR margin.
Does the MAX875AESA require an output capacitor for stability?
No, the MAX875AESA 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 - for example, adding a 1µF ceramic cap near the OUT pin reduces undershoot during 0–10mA sourcing transients by ~70% as shown in typical characteristics.
How is the TEMP pin used in practical circuits?
The TEMP pin on the MAX875AESA outputs 630mV at +25°C with a slope of 2.1mV/°C, providing a direct analog representation of die temperature. It is typically buffered with a unity-gain op-amp and fed to an ADC input for real-time thermal monitoring or used in passive compensation networks - e.g., adjusting gain in a temperature-sensitive sensor path without microcontroller intervention.
Can the MAX875AESA be adjusted to exactly 5.000V after PCB assembly?
Yes, the MAX875AESA includes a dedicated TRIM pin enabling ±6% adjustment (±300mV around 5.000V) using a 100kΩ potentiometer between OUT and GND. This allows post-assembly calibration to compensate for system-level tolerances, such as PCB trace resistance or ADC reference divider errors - achieving final accuracy tighter than the ±0.04% initial spec.
What is the short-circuit protection behavior of the MAX875AESA?
When the OUT pin of the MAX875AESA is shorted to GND, internal circuitry limits output current to 60mA maximum. If shorted to the IN supply, current is limited to 3mA. This protection operates continuously without latch-up or damage, and the device resumes normal operation immediately upon fault removal - critical for field-repairable test equipment and ruggedized portable instruments.
MAX875AESA 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:
- Obsolete
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.04%
- Temperature Coefficient:
- 7ppm/°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
MAX875AESA FAQ
1.How can I place an order for MAX875AESA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX875AESA 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 MAX875AESA reliable?
The price and inventory of MAX875AESA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX875AESA is usually 5 days.
3.What payment methods are accepted for MAX875AESA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX875AESA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX875AESA?
MAX875AESA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX875AESA 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 MAX875AESA?
For technical support, including MAX875AESA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX875AESA requirements.
6.How does Aetrix verify that MAX875AESA is sourced from the original manufacturer or authorized distributors?
All MAX875AESA 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 MAX875AESA meets industry standards.
7.What is the process for return or replacement of MAX875AESA?
All MAX875AESA units undergo pre-shipment inspection (PSI). If there is an issue with MAX875AESA, 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 MAX875AESA part is unused and in its original packaging.
Return procedure for MAX875AESA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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