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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:130
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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 (±2.0mV), 7ppm/°C max temperature coefficient, and 450µA max quiescent current, designed for high-accuracy analog signal chains in portable data-acquisition systems and 12-bit ADC/DAC circuits.
For engineers reviewing the MAX875AESA+ datasheet, MAX875AESA+ pinout, MAX875AESA+ application, or MAX875AESA+ equivalent, key selection criteria include its 5.000V output stability over –40°C to +85°C, ±6% trim range via TRIM pin, TEMP output for die-temperature monitoring, low 9µVP-P (0.1Hz–10Hz) noise, and SO-8 package compatibility with space-constrained PCB layouts.
Technical Context
The MAX875AESA+ employs a proprietary curvature-corrected bandgap core with laser-trimmed thin-film resistors to achieve 7ppm/°C max drift and 0.04% initial accuracy across –40°C to +85°C. Its internal architecture supports both sourcing (10mA) and sinking (2mA) load currents while maintaining tight line regulation (4ppm/V max) and load regulation (15ppm/mA max).
It integrates a dedicated TEMP pin delivering 630mV at +25°C with 2.1mV/°C sensitivity-enabling direct die-temperature sensing without external components-and a TRIM pin allowing ±6% output adjustment using a single 100kΩ potentiometer between OUT and GND.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000V ±2.0mV at +25°C - ensures 12-bit DAC/ADC full-scale accuracy without calibration. |
| Initial Accuracy | ±0.04% (±2.0mV) - eliminates need for post-manufacture trimming in most precision systems. |
| Temp Coefficient | 7ppm/°C max - guarantees ≤±0.35mV drift over –40°C to +85°C ambient range. |
| Quiescent Current | 450µA max - enables multi-year battery life in portable instrumentation. |
| Noise (0.1–10Hz) | 9µVP-P typical - meets SNR requirements for 12-bit data acquisition at 1ksps. |
| Load Regulation | 15ppm/mA max - maintains output stability under dynamic 0–10mA sourcing loads. |
| Line Regulation | 4ppm/V max - rejects supply ripple up to ±10% on +15V input without external filtering. |
| TEMP Output | 630mV @ +25°C, 2.1mV/°C - provides calibrated die-temperature signal for compensation or thermal warning. |
Pinout & Package
MAX875AESA+ uses an 8-pin SOIC (SO-8, package code S8-4) with exposed pad not electrically connected. Pin 1 and 8 are internally connected (do not route); Pin 7 is no-connect. The device operates with IN at +7V to +18V and requires no output capacitor for stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8 | I.C. | Internally connected - must remain unconnected on PCB to avoid parasitic coupling. |
| 2 | IN | Positive supply input - accepts +7V to +18V; bypass with 0.1µF ceramic capacitor near pin. |
| 3 | TEMP | Digital-temperature-proportional analog output - delivers 630mV @ +25°C, 2.1mV/°C slope. |
| 4 | GND | Analog ground reference - connect directly to low-impedance system ground plane. |
| 5 | TRIM | Voltage-adjust input - connect center tap of 100kΩ pot between OUT and GND for ±6% output tuning. |
| 6 | OUT | Stable +5.000V reference output - sources up to 10mA or sinks up to 2mA with <15ppm/mA regulation. |
| 7 | N.C. | No internal connection - leave floating; no trace or pad required. |
Key Features
| Feature | Design Value |
|---|---|
| Trimmable Output | ±6% adjustment range via single external potentiometer - enables field calibration without redesign. |
| Dual-Direction Load Drive | Sources 10mA / sinks 2mA - supports active biasing and feedback networks in op-amp references. |
| Integrated Temperature Sensor | 630mV @ +25°C with 2.1mV/°C linearity - replaces discrete thermistor + amplifier in thermal compensation loops. |
| Low-Noise Architecture | 9µVP-P (0.1–10Hz), 14.5µVRMS (10Hz–1kHz) - preserves dynamic range in high-resolution SAR ADC front-ends. |
| Wide Supply Range | +7V to +18V operation - accommodates unregulated industrial rails and battery-derived supplies. |
| Short-Circuit Protection | 60mA current limit when OUT shorted to GND - prevents latch-up and enables robust test fixture integration. |
Applications
| Portable Data-Acquisition Systems | Digital Multimeters |
|---|---|
Use Scenario: Battery-powered handheld DMMs measuring DC voltage with 0.1% basic accuracy over –10°C to +50°C ambient. IC Role / Device Role / Timing Role: Primary voltage reference for 16-bit sigma-delta ADC, providing stable 5.000V scale against varying battery voltage and temperature. Use Value: 7ppm/°C drift and ±2.0mV initial error ensure measurement repeatability within 1 LSB across operating range without auto-zero cycles. | Use Scenario: Benchtop multimeter requiring 12-bit resolution and <10ppm/°C long-term stability for calibration-grade measurements. IC Role / Device Role / Timing Role: Precision reference for dual-slope integrator and reference buffer stages, rejecting line-frequency interference via high PSRR. Use Value: 4ppm/V line regulation and >60dB PSRR at 60Hz minimize AC mains-induced errors in sensitive analog front-end. |
| 12-Bit ADC/DAC Circuits | Low-Power Test Equipment |
Use Scenario: Industrial sensor node digitizing thermocouple outputs using 12-bit SAR ADC with external reference input. IC Role / Device Role / Timing Role: External reference source for ADC VREF+, decoupled from noisy digital supply rails via separate IN pin. Use Value: 450µA quiescent current and 9µVP-P low-frequency noise enable >70dB SNR at 1ksps sampling rate. | Use Scenario: Portable oscilloscope probe calibration module powered by Li-ion battery with 3.0–4.2V discharge curve. IC Role / Device Role / Timing Role: Stable 5.000V reference for DAC-based offset correction circuit, operating from boosted +7V rail. Use Value: Wide +7V to +18V input range allows direct use of boost converter output without LDO stage, reducing BOM count and power loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR4550BRZ | 5.000V output, ±0.02% initial accuracy, 3ppm/°C tempco, 950µA IQ, SO-8 | Higher accuracy and lower drift but 2× higher supply current; no TEMP or TRIM pins | Select ADR4550BRZ when ultra-low drift dominates over power and feature set. |
| REF5050AIDR | 5.000V output, ±0.05% initial accuracy, 3ppm/°C tempco, 1mA IQ, SO-8 | Lower drift than MAX875AESA+ but no TEMP output; requires external trim network for adjustment | Select REF5050AIDR when long-term stability is critical and temperature monitoring is handled externally. |
Compared with ADR4550BRZ and REF5050AIDR, the MAX875AESA+ trades minor drift penalty (7ppm/°C vs. 3ppm/°C) for integrated TEMP sensing and simple ±6% trimming-reducing component count and layout area in compact, thermally aware designs.
Availability
MAX875AESA+ is available at Aetrix Electronics and suitable for portable data-acquisition systems, digital multimeters, and 12-bit ADC/DAC circuits requiring stable component supply with guaranteed -40°C to +85°C operation and lead-free compliance.
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.
The MAX875AESA+ belongs to the MAX873/MAX875/MAX876 family of low-power, low-drift voltage references engineered for high-accuracy data conversion and portable instrumentation where size, power, and thermal awareness are critical.
FAQ
What is the maximum input voltage for the MAX875AESA+?
The MAX875AESA+ supports a maximum input voltage of +18V on the IN pin. Absolute maximum rating is +20V, but continuous operation above +18V risks reliability degradation. For stable +5.000V output, VIN must be ≥+7V per datasheet specifications-ensuring adequate headroom for dropout and line regulation performance. Always use a 0.1µF ceramic capacitor between IN and GND for optimal transient rejection.
Does the MAX875AESA+ require an output capacitor for stability?
No, the MAX875AESA+ is internally compensated and remains stable without any output capacitor. It is also stable with capacitive loads up to 100µF, making it suitable for driving ADC reference inputs or op-amp buffers directly. Adding an output capacitor (e.g., 1µF ceramic) improves transient response during load steps but is optional-not required for loop stability.
How does the TRIM pin function on the MAX875AESA+?
The TRIM pin on the MAX875AESA+ allows ±6% adjustment of the 5.000V output using a resistive divider between OUT and GND. Connect the wiper of a 100kΩ potentiometer to TRIM; adjusting the wiper changes VTRIM, which linearly shifts VOUT per ∆VOUT = 2 × (VTRIM − 2.5V) × 0.06. Leaving TRIM open retains the factory-trimmed 5.000V output with ±2.0mV accuracy.
What is the purpose of the TEMP pin on the MAX875AESA+?
The TEMP pin on the MAX875AESA+ outputs a voltage proportional to die temperature: 630mV at +25°C with 2.1mV/°C sensitivity. This enables real-time die-temperature monitoring for thermal compensation of downstream circuits (e.g., ADC gain drift) or over-temperature warning without external sensors. The output is unloaded-do not sink/source current from TEMP to preserve accuracy.
Can the MAX875AESA+ sink current, and how much?
Yes, the MAX875AESA+ can sink up to 2mA from the OUT pin into the device. This capability supports active pull-down configurations-for example, in ratiometric sensor interfaces or bidirectional reference buffering. Sink load regulation is specified at 150ppm/mA max over –40°C to +85°C, ensuring predictable output shift under sink conditions. Short-circuit protection limits sink current to 60mA if OUT is pulled below GND.
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:
- 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+ 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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