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Analog Devices Inc./Maxim Integrated MAX675EPA+
- Part No.:
- MAX675EPA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX675EPA+.pdf
- Description:
- IC VREF SERIES 0.15% 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,023
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Product details
Overview
MAX675EPA+ from Maxim Integrated is a precision +5V voltage reference IC with ±0.15% initial accuracy, 15ppm/°C temperature coefficient, and 10µVP-P (0.1Hz–10Hz) low-frequency noise, designed for high-accuracy analog signal conditioning in A/D and D/A converters, digital voltmeters, and threshold detectors.
For engineers reviewing the MAX675EPA+ datasheet, MAX675EPA+ pinout, MAX675EPA+ application, or MAX675EPA+ equivalent, key selection criteria include guaranteed -40°C to +85°C operation, trim-adjustable output (±150mV), load regulation of 0.001%/mA, short-circuit protection, and pin-for-pin compatibility with REF02 in 8-pin PDIP.
Technical Context
The MAX675EPA+ integrates a bandgap-based reference core with on-chip trimming and a dedicated TEMP pin delivering 2.1mV/°C absolute-temperature-proportional voltage. Its output is adjustable via external resistor at the TRIM pin without degrading temperature stability beyond +0.7ppm/°C per 100mV shift.
It operates from 15V input (absolute max 40V), delivers up to 10mA load current at +25°C, features 5µs turn-on settling to ±0.1%, and maintains 0.006%/V line regulation over 18V–33V input range - all while drawing only 750µA to 1400µA quiescent supply current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +5.000V ±7mV (±0.15%) at IL = 0mA - enables direct replacement of 5V references in 12-bit+ systems |
| Tempco | 15ppm/°C (max) - ensures ≤0.75mV drift over -40°C to +85°C operating range |
| Noise | 10µVP-P (0.1Hz–10Hz) - supports high-resolution metrology without added filtering |
| Load Regulation | 0.001%/mA - holds output within ±10µV across 0–10mA load variation |
| Quiescent Current | 750–1400µA - allows use in low-power precision systems with minimal self-heating error |
| Trim Range | ±150mV - permits binary-aligned calibration (e.g., 5.120V) without external op-amps |
| Turn-On Settling | 5µs to ±0.1% - supports fast-sampling data acquisition with minimal delay |
Pinout & Package
MAX675EPA+ is supplied in an 8-pin Plastic Dual In-line Package (PDIP), with 0.3-inch body width and through-hole mounting. Pin 1 is VOUT, Pin 2 is TRIM, Pin 3 is GND, Pin 4 is TEMP, Pin 5 is N.C., Pin 6 is N.C., Pin 7 is VIN, and Pin 8 is N.C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VOUT) | Reference Output | Stable +5V source with low noise and high PSRR; drives ADC reference inputs directly |
| 2 (TRIM) | Output Adjustment | Connects to external 10kΩ potentiometer for ±150mV fine-tuning; no effect on tempco unless adjusted >±100mV |
| 3 (GND) | Analog Ground | Return path for reference output and internal bandgap; must be star-connected to minimize ground bounce |
| 4 (TEMP) | Temperature Sensor Output | Delivers 2.1mV/°C proportional-to-absolute-temperature voltage (630mV at 25°C); usable as remote sensor interface |
| 5,6,8 (N.C.) | No Connect | Internally unconnected; must remain floating - not tied to GND or VIN |
| 7 (VIN) | Positive Supply Input | Accepts 15V nominal (40V absolute max); regulates internally to power reference core and TEMP circuitry |
Key Features
| Feature | Design Value |
|---|---|
| Pretrimmed +5V Output | Guaranteed ±0.15% initial accuracy eliminates system-level calibration for most 12-bit applications |
| Adjustable Reference | ±150mV trim range enables precise binary scaling (e.g., 5.120V for 10V full-scale 12-bit DACs) |
| Dual-Function TEMP Pin | Provides calibrated temperature sensing (2.1mV/°C) alongside reference function - reduces component count in thermal monitoring designs |
| Short-Circuit Protection | Indefinite short-circuit survival to GND or VIN prevents field failure during board test or fault conditions |
| Low Quiescent Current | Sub-1.4mA supply draw minimizes self-heating-induced drift (<0.1ppm/°C error contribution) |
Applications
| Precision Calibration Standard | ±5V Bipolar Reference |
|---|---|
Use Scenario: Lab-grade benchtop calibrator requiring stable, traceable 5.000V output for instrument verification. IC Role / Device Role / Timing Role: Primary voltage reference source with trim-adjusted 5.120V output for binary-aligned DAC testing. Use Value: ±7mV initial tolerance and 15ppm/°C tempco ensure <0.01% total error over lab temperature range. | Use Scenario: Industrial data acquisition system needing matched +5V and -5V rails for bipolar analog front-end. IC Role / Device Role / Timing Role: +5V reference feeding an inverting op-amp stage to generate precision -5V rail. Use Value: Low 0.001%/mA load regulation prevents cross-rail coupling errors when sourcing 5mA into both rails. |
| Precision Temperature Transducer | Threshold Detector Reference |
Use Scenario: Remote temperature monitoring in HVAC control using shielded 10-foot cable between sensor and controller. IC Role / Device Role / Timing Role: Local reference and temperature sensor - TEMP pin outputs 2.1mV/°C signal referenced to same 5V core. Use Value: Co-located reference and sensor eliminate gain/offset mismatch; 10µVP-P noise ensures <0.01°C resolution. | Use Scenario: Overvoltage lockout circuit in power supply monitoring where trip point must track supply variations. IC Role / Device Role / Timing Role: Stable 5V reference input to comparator driving shutdown logic when VIN exceeds 5.5V. Use Value: 0.006%/V line regulation ensures trip threshold remains fixed within ±33mV over 15–33V input range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF02CP | Same 8-pin PDIP, ±0.2% initial accuracy, 25ppm/°C tempco, no TEMP pin | Lacks temperature-sensing capability; higher drift limits use in wide-temp industrial environments | Select REF02CP only if TEMP functionality is unnecessary and cost sensitivity outweighs 0.05% accuracy loss |
| ADR445BRZ | SOIC-8, ±0.04% initial accuracy, 3ppm/°C tempco, 1.8µVP-P noise, no TRIM or TEMP pins | Superior stability but no adjustability or dual-function capability; requires external circuitry for trimming or temperature readout | Choose ADR445BRZ when ultimate precision is required and system design accommodates fixed-output, no-trim architecture |
Compared with REF02CP and ADR445BRZ, the MAX675EPA+ uniquely combines factory-trimmed 5V accuracy, ±150mV adjustability, integrated temperature sensing, and industrial temperature range - making it optimal for multi-function analog subsystems where space and BOM count are constrained.
Availability
MAX675EPA+ is available at Aetrix Electronics and suitable for precision instrumentation, industrial data acquisition, and embedded calibration systems requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX675EPA+ 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 precision analog, mixed-signal, and power management ICs for industrial, medical, and communications applications.
The MAX675 series belongs to Maxim's precision voltage reference product line, engineered specifically for high-accuracy, low-drift, multi-function reference needs in systems where trim capability and temperature telemetry add value beyond basic regulation.
FAQ
What is the operating temperature range of the MAX675EPA+?
The MAX675EPA+ is rated for continuous operation from -40°C to +85°C. This extended industrial temperature range is confirmed in the official Maxim datasheet ordering table and supported by guaranteed 15ppm/°C temperature coefficient performance across the full span. The MAX675EPA+ achieves this via process-trimmed bandgap design and internal thermal compensation - critical for outdoor or under-hood applications where ambient extremes affect measurement integrity. All electrical specifications in the datasheet apply within this range unless otherwise noted.
Does the MAX675EPA+ require external components to function as a basic 5V reference?
No, the MAX675EPA+ operates as a complete +5V reference with only VIN and GND connections - no external capacitors or resistors are needed for basic functionality. The TRIM and TEMP pins may be left unconnected if adjustment or temperature sensing is not used. However, a 0.1µF bypass capacitor on VIN is recommended per Maxim's layout guidelines to suppress high-frequency noise and ensure stability. The device includes internal short-circuit protection and does not require external current limiting under normal or fault conditions.
Can the MAX675EPA+ be used to generate a precise -5V reference?
Yes, the MAX675EPA+ can serve as the foundation for a precise -5V reference when paired with an external op-amp configured as an inverting amplifier with unity gain. The MAX675EPA+ provides the stable +5V source; the op-amp (e.g., MAX400 shown in Figure 4 of the datasheet) inverts and buffers it to produce a matched -5V rail. Load regulation of 0.001%/mA ensures minimal interaction between the +5V and -5V paths, and the low 10µVP-P noise preserves signal integrity in bipolar data acquisition systems requiring tight common-mode rejection.
What is the purpose of the TEMP pin on the MAX675EPA+?
The TEMP pin on the MAX675EPA+ outputs a voltage proportional to absolute temperature at 2.1mV/°C (e.g., 630mV at 25°C), derived from the same bandgap core that generates the 5V reference. This dual-function capability eliminates the need for a separate temperature sensor in space-constrained designs. It is specified for direct connection to ADC inputs - with no external amplification required - enabling accurate thermal monitoring alongside voltage reference duties. The TEMP output is ratiometric to the reference, ensuring correlated drift cancellation in ratio-metric measurements.
Is the MAX675EPA+ pin-compatible with other members of the MAX675 family?
Yes, the MAX675EPA+ shares identical 8-pin PDIP pinout with MAX675CPA, MAX675EJA, and MAX675CTV - all feature VOUT (pin 1), TRIM (pin 2), GND (pin 3), TEMP (pin 4), N.C. (pins 5,6,8), and VIN (pin 7). This uniformity allows drop-in replacement across temperature grades and packages (e.g., upgrading from commercial to industrial grade without PCB revision). However, note that SO and TO-99 variants have different physical footprints and thermal characteristics - only PDIP versions maintain mechanical and electrical pin compatibility with the MAX675EPA+.
MAX675EPA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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:
- ±0.15%
- Temperature Coefficient:
- 15ppm/°C
- Noise - 0.1Hz to 10Hz:
- 10µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 18V ~ 33V
- Current - Supply:
- 1.4mA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
MAX675EPA+ FAQ
1.How can I place an order for MAX675EPA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX675EPA+ 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 MAX675EPA+ reliable?
The price and inventory of MAX675EPA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX675EPA+ is usually 5 days.
3.What payment methods are accepted for MAX675EPA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX675EPA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX675EPA+?
MAX675EPA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX675EPA+ 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 MAX675EPA+?
For technical support, including MAX675EPA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX675EPA+ requirements.
6.How does Aetrix verify that MAX675EPA+ is sourced from the original manufacturer or authorized distributors?
All MAX675EPA+ 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 MAX675EPA+ meets industry standards.
7.What is the process for return or replacement of MAX675EPA+?
All MAX675EPA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX675EPA+, 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 MAX675EPA+ part is unused and in its original packaging.
Return procedure for MAX675EPA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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