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Analog Devices Inc./Maxim Integrated MAX874ESA
- Part No.:
- MAX874ESA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX874ESA.pdf
- Description:
- VOLTAGE REFERENCE
- Quantity:
- Payment:
- Shipping:
Inventory:735
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Product details
Overview
MAX874ESA from Maxim Integrated is a precision 4.096V low-dropout voltage reference IC designed for high-accuracy analog signal conditioning and ADC/DAC biasing in battery-powered and industrial systems. It delivers ±0.2% initial accuracy (±8mV), 40ppm/°C max temperature drift, 10µA max quiescent current, and operates from 4.3V to 20V supply with only 200mV dropout - enabling reliable operation from a standard 5V rail.
For engineers reviewing the MAX874ESA datasheet, MAX874ESA pinout, MAX874ESA application, or MAX874ESA equivalent, key selection criteria include its ultra-low IQ, tight output tolerance at extended temperature (–40°C to +85°C), sink/source capability up to ±500µA, and integrated TEMP output for ambient temperature monitoring.
Technical Context
The MAX874ESA implements a bandgap-based reference core with internal trimming for factory-calibrated 4.096V output and a dedicated TEMP pin delivering a voltage proportional to junction temperature (≈2.0V at +25°C, ±2.3mV/°C). Its low 10µA supply current and 200mV dropout are achieved via a proprietary low-power pass element architecture optimized for micro-power operation without sacrificing load regulation.
It supports bidirectional current delivery (±500µA) while maintaining <1.0mV/mA load regulation over –40°C to +85°C, and includes a COMP pin for capacitive load compensation when CLOAD > 1000pF - requiring CCOMP = CLOAD/100 connected between COMP and VOUT to ensure stability under dynamic loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V ±0.2% (±8mV) at +25°C - enables direct interface with 12-bit SAR ADCs requiring precise VREF without external scaling |
| Quiescent Current | ≤10µA - allows multi-year operation from coin-cell batteries in portable instrumentation |
| Dropout Voltage | 200mV at ±500µA load - supports stable regulation from 5.0V supply with ≥300mV headroom |
| Tempco | ≤40ppm/°C over –40°C to +85°C - ensures ≤±16.4mV total output shift across full industrial range |
| Line Regulation | 75µV/V max - limits output change to ≤1.5mV over 4.3V–20V input variation |
| Load Regulation | 1.0mV/mA max - maintains output accuracy within ±0.5mV for 0–500µA sourcing/sinking |
| TEMP Output | 2.0V ±0.2V at +25°C, 2.3mV/°C slope - provides calibrated ambient temperature sensing with <0.5°C self-heating error |
Pinout & Package
MAX874ESA is housed in an 8-pin SO (Small Outline) package with standard 1.27mm pitch, JEDEC MS-012AC compliant, and RoHS-compliant matte tin lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 2) | Input Supply | Accepts 4.3V–20V DC; must maintain ≥200mV above VOUT for regulation |
| GND (Pin 4) | Ground Reference | Common return for VOUT, TEMP, TRIM, COMP; substrate tied to GND |
| TEMP (Pin 3) | Temperature Sensor Output | Provides 2.0V ±0.2V @ +25°C, 2.3mV/°C slope; requires high-Z buffer or ADC input |
| TRIM (Pin 5) | Output Voltage Adjustment | Allows ±150mV fine-tuning of VOUT; trimming alters tempco by ~7ppm/°C per 100mV offset |
| COMP (Pin 8) | Capacitive Load Compensation | Connect CCOMP = CLOAD/100 between COMP and VOUT if CLOAD > 1000pF |
| VOUT (Pin 6) | Precision Reference Output | Delivers 4.096V ±0.2%; sources/sinks ±500µA with <1.0mV/mA regulation |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-Low Quiescent Current | 10µA max enables >10-year battery life in always-on sensor nodes using CR2032 cells |
| Integrated Temperature Sensor | TEMP pin provides calibrated ambient temperature data without external components or calibration |
| Low Dropout Operation | 200mV dropout at full ±500µA load allows use with 5V supplies while preserving margin for PCB IR drop |
| Factory-Trimmed Accuracy | ±0.2% initial tolerance eliminates need for post-assembly calibration in production test |
| Bidirectional Output Drive | ±500µA sourcing/sinking capability supports active filtering, DAC reference buffering, and sensor excitation |
Applications
| Hand-Held Multimeters | Battery-Powered Data Loggers |
|---|---|
Use Scenario: Portable 4½-digit DMM requiring stable 4.096V reference for 16-bit ADC conversion of analog inputs. IC Role / Device Role / Timing Role: Primary voltage reference for successive-approximation ADC, providing VREF with minimal drift during field measurements. Use Value: ±0.2% initial accuracy and 40ppm/°C drift ensure measurement repeatability within ±0.01% FS across –10°C to +50°C ambient. | Use Scenario: Low-power environmental sensor node logging temperature/humidity every 10 seconds using coin-cell battery. IC Role / Device Role / Timing Role: Dual-role device: supplies 4.096V reference for ADC and provides TEMP output for on-board ambient temperature compensation. Use Value: 10µA quiescent current extends battery life to >5 years; TEMP output eliminates need for separate temperature sensor IC. |
| Industrial PLC Analog Input Modules | Medical Patient Monitoring Devices |
Use Scenario: DIN-rail mounted I/O module converting 4–20mA sensor signals to digital values in harsh factory environments. IC Role / Device Role / Timing Role: Precision reference for isolated sigma-delta ADC, referenced against system ground with galvanic isolation barrier. Use Value: 4.3V–20V input range accommodates wide industrial supply rails; 40ppm/°C drift meets IEC 61000-6-2 immunity requirements for long-term stability. | Use Scenario: Portable ECG monitor requiring accurate biopotential amplification and digitization with low thermal drift. IC Role / Device Role / Timing Role: Reference source for 12-bit medical-grade ADC and bias generator for front-end instrumentation amplifiers. Use Value: ±8mV output tolerance ensures <±0.2% gain error in analog signal chain; TEMP output enables real-time skin-contact temperature correction. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5040IDR | 4.096V, 3ppm/°C max drift, 950µA IQ, SO-8 package | Higher accuracy and lower drift but 95× higher supply current; requires heatsinking at full load | Select for metrology-grade systems where drift dominates error budget and power is not constrained |
| ADR444BRZ | 4.096V, 3ppm/°C max drift, 750µA IQ, SO-8 package | Superior long-term stability (15ppm/√khr) and lower noise, but incompatible TEMP output and higher IQ | Choose when absolute reference stability over 10+ years is critical and temperature sensing is handled separately |
Compared with REF5040IDR and ADR444BRZ, the MAX874ESA trades lower drift and noise for ultra-low power (10µA vs. >750µA) and integrated temperature sensing - making it uniquely suited for battery-operated, space-constrained applications where power efficiency and multi-function integration outweigh ultimate precision.
Availability
MAX874ESA is available at Aetrix Electronics and suitable for hand-held instruments, battery-powered equipment, and industrial power supplies requiring stable component supply with legacy design support.
Supply support for MAX874ESA 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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer markets.
The MAX872/MAX874 family was engineered specifically for micro-power, precision voltage referencing in portable and energy-sensitive systems - prioritizing ultra-low IQ, low dropout, and integrated diagnostics (TEMP output) over raw drift performance.
FAQ
What is the operating temperature range for the MAX874ESA?
The MAX874ESA is specified for operation from –40°C to +85°C. Electrical characteristics including output voltage accuracy (±0.2%), temperature coefficient (≤40ppm/°C), and load regulation (≤1.0mV/mA) are guaranteed across this full industrial temperature range, as confirmed in the MAX874E electrical specifications table.
Does the MAX874ESA provide temperature sensing capability?
Yes, the MAX874ESA includes a dedicated TEMP pin (Pin 3) that outputs a voltage proportional to junction temperature - approximately 2.0V at +25°C with a slope of 2.3mV/°C. Because the device dissipates <100µW, junction temperature closely tracks ambient, enabling accurate ambient temperature monitoring without additional sensors.
Can the MAX874ESA drive capacitive loads directly?
The MAX874ESA can drive capacitive loads up to 1000pF directly on the VOUT pin. For loads exceeding 1000pF, a compensation capacitor (CCOMP) must be connected between the COMP pin (Pin 8) and VOUT, sized to CLOAD/100 - as specified in the Applications Information section and Figure 2 of the MAX874ESA datasheet.
What is the minimum input voltage required for regulation with the MAX874ESA?
The MAX874ESA requires a minimum input voltage of VOUT + 200mV to maintain regulation - i.e., at least 4.296V when sourcing or sinking up to ±500µA. The datasheet specifies a 4.3V minimum operating voltage, consistent with this 200mV dropout requirement under full load conditions.
Is the MAX874ESA still recommended for new designs?
No - Maxim explicitly states "Not Recommended for New Designs" due to discontinuation of the wafer process used to manufacture the MAX874ESA. While functional units remain available for legacy support and repair, Analog Devices recommends evaluating modern alternatives such as the REF5040 or ADR444 for new projects requiring similar functionality.
MAX874ESA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 400 µA
- Tolerance:
- ±0.38%
- Temperature Coefficient:
- 40ppm/°C
- Noise - 0.1Hz to 10Hz:
- 90µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 4.3V ~ 20V
- Current - Supply:
- 15µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX874ESA FAQ
1.How can I place an order for MAX874ESA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX874ESA 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 MAX874ESA reliable?
The price and inventory of MAX874ESA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX874ESA is usually 5 days.
3.What payment methods are accepted for MAX874ESA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX874ESA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX874ESA?
MAX874ESA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX874ESA 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 MAX874ESA?
For technical support, including MAX874ESA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX874ESA requirements.
6.How does Aetrix verify that MAX874ESA is sourced from the original manufacturer or authorized distributors?
All MAX874ESA 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 MAX874ESA meets industry standards.
7.What is the process for return or replacement of MAX874ESA?
All MAX874ESA units undergo pre-shipment inspection (PSI). If there is an issue with MAX874ESA, 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 MAX874ESA part is unused and in its original packaging.
Return procedure for MAX874ESA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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