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Analog Devices Inc./Maxim Integrated MAX875AESA+T
- Part No.:
- MAX875AESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX875AESA+T.pdf
- Description:
- IC VREF SERIES 0.04% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,022
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Product details
Overview
MAX875AESA+T from Maxim Integrated is a precision +5.0V voltage reference IC with ±0.04% initial accuracy (±2.0mV), 7ppm/°C max temperature coefficient, and 450µA max quiescent current. It features TRIM and TEMP pins for output adjustment and temperature-proportional monitoring, and delivers stable 5V reference output for high-resolution data acquisition systems operating from +7V to +18V supply.
For engineers reviewing the MAX875AESA+T datasheet, MAX875AESA+T pinout, MAX875AESA+T application, or MAX875AESA+T equivalent, this page provides verified electrical specifications, SOIC-8 package details, trim-adjustable reference behavior, temperature-sensing capability, and real-world selection guidance for 12-bit–16-bit ADC/DAC systems requiring low-drift, low-noise, and long-term stability.
Technical Context
The MAX875AESA+T implements a laser-trimmed bandgap core with proprietary curvature-correction circuitry to achieve 7ppm/°C max drift over –40°C to +85°C. Its TRIM pin enables ±6% output adjustment via external resistive divider, while the TEMP pin outputs 630mV at +25°C with 2.1mV/°C sensitivity-enabling on-die temperature monitoring without external sensors.
It operates as a two-terminal shunt-like series reference: sourcing up to 10mA and sinking up to 2mA, with 15ppm/mA max load regulation and 4ppm/V max line regulation. The device requires no output capacitor for stability and remains functional with input voltages as low as +7V (for 5V output), supporting wide-supply industrial and portable applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000V ±2.0mV at +25°C - ensures ≤0.04% absolute error in calibration-critical signal chains |
| Tempco | 7ppm/°C max - guarantees ≤±0.35mV drift across –40°C to +85°C ambient range |
| Noise (10Hz–1kHz) | 14.5µVRMS typical - supports 12-bit ADCs (LSB = 1.22mV @ 5V) without added noise floor degradation |
| Quiescent Current | 450µA max - enables multi-year battery life in portable DMMs and handheld DAQ systems |
| Load Regulation | 15ppm/mA max - maintains <±0.015mV/V change per mA source/sink, critical for dynamic load switching |
| Line Regulation | 4ppm/V max - limits output shift to <±0.02mV per volt input variation, essential for unregulated supplies |
| TRIM Range | ±6% (±300mV) - allows fine-tuning to compensate for PCB trace resistance or system-level gain errors |
| TEMP Output | 630mV @ +25°C, 2.1mV/°C - provides direct die-temperature sensing for thermal derating or compensation algorithms |
Pinout & Package
MAX875AESA+T is housed in an 8-pin SOIC (SO) package (JEDEC MS-012, 150-mil width), with exposed pad not electrically connected. Pin 1 and Pin 8 are internally connected (I.C.) and must remain unconnected on PCB; Pin 7 is No Connection (N.C.). GND (Pin 4) must be low-impedance; IN (Pin 2) requires local 0.1µF ceramic decoupling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1, Pin 8 | I.C. (Internally Connected) | Not usable externally; leave floating or tie to GND only if required by layout grounding strategy |
| Pin 2 | IN | Positive supply input; accepts +7V to +18V; requires 0.1µF ceramic bypass placed adjacent to pin |
| Pin 3 | TEMP | Temperature-proportional analog output; 630mV @ +25°C, 2.1mV/°C slope; high-impedance, do not load |
| Pin 4 | GND | Analog ground reference; must connect to clean, low-noise system ground plane |
| Pin 5 | TRIM | Voltage adjust node; connect to center tap of 100kΩ potentiometer between OUT and GND for ±6% tuning |
| Pin 6 | OUT | Precision +5.0V reference output; sources up to 10mA, sinks up to 2mA; stable with 0–100µF capacitive loads |
| Pin 7 | N.C. | No internal connection; must remain unconnected on PCB |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed thin-film resistors | Enables ±0.04% initial accuracy and 7ppm/°C tempco without external calibration |
| Proprietary curvature-correction circuit | Reduces parabolic drift contribution, improving stability over full –40°C to +85°C range |
| Integrated TEMP output | Provides factory-calibrated die temperature signal (630mV @ +25°C) for real-time thermal management |
| TRIM pin with ±6% adjustability | Allows post-assembly correction of system-level gain/offset errors without redesigning feedback networks |
| Short-circuit protected output | Withstands 5s output-to-GND short; limits current to 60mA, preventing latch-up or damage during test/debug |
| No output capacitor required | Eliminates risk of instability or phase margin loss, simplifying layout and reducing BOM count |
Applications
| Portable Digital Multimeters | 12-Bit Data Acquisition Systems |
|---|---|
|
Use Scenario: Handheld DMMs requiring stable 5V reference for dual-slope or sigma-delta ADCs across battery discharge cycles and ambient temperature swings. IC Role / Device Role / Timing Role: Primary voltage reference for ADC front-end; sets full-scale range and defines measurement resolution. Use Value: 450µA max IQ extends alkaline battery life beyond 1000 hours; 7ppm/°C drift ensures ≤0.003% reading error over –10°C to +50°C operating range. |
Use Scenario: Industrial sensor nodes digitizing thermocouple, RTD, or strain-gauge signals with 12-bit SAR ADCs powered from 12V rails. IC Role / Device Role / Timing Role: Precision reference for ADC conversion; also feeds TEMP output to microcontroller for cold-junction compensation. Use Value: TEMP pin eliminates need for external temperature sensor; ±2.0mV initial accuracy ensures <±1 LSB error at 12-bit (1.22mV LSB). |
| Low-Power Test Equipment | Calibration Standards for Field Instruments |
|
Use Scenario: Battery-powered benchtop calibrators generating precise DC voltage outputs for field instrument verification. IC Role / Device Role / Timing Role: Reference source for programmable voltage output stage; TRIM pin enables factory calibration traceability. Use Value: ±6% TRIM range supports end-of-line adjustment to meet ±0.01% calibration tolerance; 50ppm/kh long-term drift ensures recalibration intervals ≥12 months. |
Use Scenario: Portable calibration standards used to verify pressure transmitters and process controllers in oil/gas field service. IC Role / Device Role / Timing Role: Stable 5V reference for internal DAC-based output generation; TEMP output monitors internal thermal state during extended field use. Use Value: 14.5µVRMS noise ensures clean output waveform for metrology-grade testing; SOIC-8 package enables compact, ruggedized enclosure design. |
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 | 5.0V, 3ppm/°C max, 100µA IQ, SOIC-8 - lower drift and IQ but no TEMP or TRIM pins | Suitable where ultra-low drift dominates over adjustability or thermal monitoring | Select REF5050AIDR when long-term stability and minimal power are primary; avoid if TRIM/TEMP functionality is needed |
| ADR4550BRZ | 5.0V, 3ppm/°C max, 950µA IQ, SOIC-8 - higher IQ, no TEMP output, ±0.02% initial accuracy | Better initial accuracy than MAX875AESA+T but lacks on-chip temperature sensing | Choose ADR4550BRZ for highest absolute accuracy in fixed-reference designs; MAX875AESA+T preferred when thermal awareness or field trimming is required |
Compared with REF5050AIDR and ADR4550BRZ, MAX875AESA+T uniquely integrates TRIM and TEMP functions in a low-IQ SOIC-8 package-making it optimal for space-constrained, thermally aware, or field-calibratable systems where ±0.04% accuracy and 7ppm/°C drift are sufficient.
Availability
MAX875AESA+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, consistent parametric performance, and long-lifecycle availability.
Supply support for MAX875AESA+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 industrial, medical, and communications applications, with emphasis on precision, power efficiency, and integration.
The MAX875AESA+T belongs to Maxim's precision voltage reference product line, engineered specifically for high-resolution data converters and portable instrumentation where low drift, low noise, and on-chip thermal intelligence are critical.
FAQ
What is the guaranteed initial accuracy of MAX875AESA+T over temperature?
The MAX875AESA+T guarantees ±0.04% initial accuracy (±2.0mV at +25°C) across the full –40°C to +85°C operating range. This specification is confirmed in the Electrical Characteristics table for MAX875A grade devices and reflects worst-case deviation before any trimming. Long-term drift adds ≤50ppm/kh, making MAX875AESA+T suitable for applications requiring recalibration intervals of 12+ months.
Can MAX875AESA+T operate from a +5V supply?
No, MAX875AESA+T requires a minimum input voltage of +7V to maintain 5.0V output regulation, as specified in the MAX875 Electrical Characteristics table (VIN = +7V to +18V). Attempting operation from +5V will result in dropout and unregulated output. For +5V supply systems, consider the MAX6126AASA50+ or similar 5V-input-compatible references.
How is the TEMP pin of MAX875AESA+T used in practice?
The TEMP pin of MAX875AESA+T outputs 630mV at +25°C with a linear 2.1mV/°C slope, providing direct die-temperature measurement. In practice, it connects to an ADC input (with ≥10kΩ input impedance) to enable real-time thermal monitoring or cold-junction compensation-eliminating the need for external temperature sensors. Loading the TEMP pin degrades accuracy, so buffer amplification is recommended for driving low-impedance circuits.
Does MAX875AESA+T require an output capacitor for stability?
No, MAX875AESA+T is internally compensated and stable without any output capacitor. It remains stable with capacitive loads up to 100µF, allowing designers to add output capacitance solely for transient response improvement-not for stability. This eliminates risk of oscillation due to capacitor ESR/ESL and simplifies layout, especially in space-constrained portable instruments.
What is the maximum continuous output current capability of MAX875AESA+T?
MAX875AESA+T can continuously source up to 10mA and sink up to 2mA while maintaining specified accuracy and regulation. Short-circuit protection limits output current to 60mA when shorted to GND (for ≤5s), and to 3mA when shorted to IN. These ratings are validated across –40°C to +85°C and are documented in both Absolute Maximum Ratings and Electrical Characteristics sections of the datasheet.
MAX875AESA+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:
- ±0.04%
- 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+T FAQ
1.How can I place an order for MAX875AESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX875AESA+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 MAX875AESA+T reliable?
The price and inventory of MAX875AESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX875AESA+T is usually 5 days.
3.What payment methods are accepted for MAX875AESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX875AESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX875AESA+T?
MAX875AESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX875AESA+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 MAX875AESA+T?
For technical support, including MAX875AESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX875AESA+T requirements.
6.How does Aetrix verify that MAX875AESA+T is sourced from the original manufacturer or authorized distributors?
All MAX875AESA+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 MAX875AESA+T meets industry standards.
7.What is the process for return or replacement of MAX875AESA+T?
All MAX875AESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX875AESA+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 MAX875AESA+T part is unused and in its original packaging.
Return procedure for MAX875AESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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