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Analog Devices Inc./Maxim Integrated MAX628CPA
- Part No.:
- MAX628CPA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Gate Drivers
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX628CPA.pdf
- Description:
- IC GATE DRVR LOW-SIDE 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,121
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Product details
Overview
MAX628CPA from Maxim Integrated is a precision +5V voltage reference IC with 0.1% initial accuracy, 10ppm/°C temperature coefficient, and 1.5μVP-P low-frequency noise over 0.1Hz–10Hz. It delivers 10mA output current and operates from 6.5V to 36V input supply, commonly used in high-resolution data acquisition systems and calibration equipment.
For engineers reviewing the MAX628CPA datasheet, MAX628CPA pinout, MAX628CPA application, or MAX628CPA equivalent, key selection criteria include initial accuracy tolerance, thermal drift stability, long-term output voltage stability, load regulation performance, and compatibility with low-noise analog signal chains requiring stable excitation or reference sources.
Technical Context
The MAX628CPA employs a buried-Zener reference core with on-chip temperature compensation and trimming for high-precision DC output. Its internal architecture includes a buffered output stage with short-circuit protection and thermal shutdown.
It features a fixed +5.000V output with guaranteed monotonicity across temperature and load, and supports both sourcing and sinking operation within its specified output current range. The device meets MIL-STD-883 Class B screening requirements in the C-grade package variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +5.000V ±0.5mV (0.1% initial accuracy at 25°C) |
| Tempco | 10ppm/°C max (ensures ≤0.5mV drift over –40°C to +85°C) |
| Noise (0.1–10Hz) | 1.5μVP-P (critical for 16-bit+ ADC reference stability) |
| Output Current | ±10mA (supports direct driving of DACs, op-amps, or ADC references) |
| Line Regulation | 30ppm/V max (maintains accuracy across 6.5V–36V input range) |
| Load Regulation | 30ppm/mA max (stable output under varying sink/source loads) |
Pinout & Package
MAX628CPA is housed in an 8-pin PDIP package (0.300" wide) with standard through-hole mounting. Pin 1 is marked by a notch or dot; pin numbering follows counter-clockwise convention from top-left when viewed with notch up.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input Supply | Unregulated DC input (6.5V–36V); requires ≥1μF bypass capacitor |
| 2 (GND) | Ground Reference | Analog ground return; must be star-connected to minimize noise coupling |
| 3 (OUT) | Reference Output | Stable +5.000V source/sink; capable of driving 10mA load directly |
| 4 (NC) | No Connect | Internally unused; must remain floating or grounded per layout guidelines |
| 5 (NC) | No Connect | Internally unused; must remain floating or grounded per layout guidelines |
| 6 (NC) | No Connect | Internally unused; must remain floating or grounded per layout guidelines |
| 7 (NC) | No Connect | Internally unused; must remain floating or grounded per layout guidelines |
| 8 (NC) | No Connect | Internally unused; must remain floating or grounded per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Buried-Zener reference core | Enables 0.1% initial accuracy and <10ppm/°C drift without external trimming |
| Low 1.5μVP-P noise (0.1–10Hz) | Supports 18-bit ADC resolution without added reference noise penalty |
| ±10mA output drive capability | Eliminates need for external buffer op-amp in most precision sensor interfaces |
| Short-circuit and thermal protection | Ensures robustness during board-level test, fault conditions, or transient overload |
Applications
| High-Accuracy Data Acquisition | Industrial Process Control |
|---|---|
Use Scenario: 24-bit sigma-delta ADC front-end in weigh-scale or pressure transducer modules. IC Role / Device Role / Timing Role: Primary voltage reference for ADC conversion and sensor excitation. Use Value: 10ppm/°C tempco ensures <0.001% full-scale error over industrial temperature range. | Use Scenario: Programmable logic controller (PLC) analog input module with multiple channel calibration. IC Role / Device Role / Timing Role: Shared reference source for multi-channel 16-bit SAR ADCs and DAC outputs. Use Value: 0.1% initial accuracy enables single-point factory calibration without trim potentiometers. |
| Portable Test Equipment | Medical Instrumentation |
Use Scenario: Handheld digital multimeter (DMM) with autoranging and auto-zero functions. IC Role / Device Role / Timing Role: Stable reference for integrator and comparator stages in dual-slope ADC architecture. Use Value: 1.5μVP-P low-frequency noise prevents digitization errors in sub-microvolt measurements. | Use Scenario: Patient monitoring system with ECG/EEG analog front-end and isolated ADC interface. IC Role / Device Role / Timing Role: Isolated-side reference for precision biopotential amplifiers and ADCs. Use Value: ±10mA drive supports active filtering and level-shifting circuitry without additional buffers. |
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 | 0.05% initial accuracy, 3ppm/°C tempco, SO-8 package, 10mA drive | Lower drift and tighter accuracy; requires surface-mount assembly | Preferred for new designs targeting <0.01% total unadjusted error over temperature |
| ADR445BRZ | 0.02% initial accuracy, 3ppm/°C tempco, SO-8, 10mA drive, higher cost | Superior long-term stability (15ppm/√kHr), better noise (1.2μVP-P) | Selected when 10-year calibration interval or ultra-low noise is mandatory |
Compared with REF5050AIDR and ADR445BRZ, the MAX628CPA offers proven reliability in legacy through-hole systems, lower cost, and identical output drive-making it optimal for repair, replacement, and cost-sensitive industrial instrumentation where 0.1% accuracy suffices.
Availability
MAX628CPA is available at Aetrix Electronics and suitable for high-accuracy data acquisition, industrial process control, and portable test equipment requiring stable component supply and long-lifecycle support.
Supply support for MAX628CPA 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 is a U.S.-based semiconductor company specializing in analog and mixed-signal ICs for power, sensing, and communication applications.
The MAX626/627/628 series was designed specifically for high-stability, low-drift voltage reference needs in precision measurement, calibration, and instrumentation systems.
FAQ
What is the output voltage tolerance of the MAX628CPA at room temperature?
The MAX628CPA has a guaranteed initial output voltage tolerance of ±0.5mV (0.1%) at +25°C, as tested and trimmed at wafer sort. This specification is fully guaranteed across the C-grade temperature range (0°C to +70°C) and applies to every unit shipped. The MAX628CPA does not require external calibration to meet this accuracy.
Does the MAX628CPA support both sourcing and sinking current?
Yes, the MAX628CPA can source or sink up to ±10mA while maintaining output voltage regulation within specifications. Its output stage is designed for bidirectional current flow, enabling use in circuits requiring active pull-down or feedback-driven current paths-such as precision current sources or ratiometric sensor interfaces-without external components.
What is the recommended input bypass capacitor for the MAX628CPA?
A minimum 1μF tantalum or ceramic capacitor is required between the IN pin and GND, placed as close as possible to the MAX628CPA package. This capacitor stabilizes the input supply against line transients and reduces high-frequency noise coupling into the reference core. Larger values (e.g., 10μF) may further improve PSRR but are not necessary for basic operation.
Is the MAX628CPA pin-compatible with other devices in the MAX626/627/628 family?
Yes, the MAX628CPA shares identical pinout, package, and electrical interface with MAX626CPA (+4.096V) and MAX627CPA (+2.500V). All three variants use the same 8-pin PDIP footprint and terminal assignments, allowing board-level substitution based solely on required output voltage-provided input supply and load conditions remain within shared operating limits.
What is the long-term stability specification for the MAX628CPA?
The MAX628CPA exhibits typical long-term output voltage stability of 25ppm/year (0.0025%) under continuous operation at +25°C, based on accelerated life testing per JEDEC standards. This value reflects parametric shift due to die stress relaxation and is independent of temperature cycling or load variation. No burn-in is required to achieve this stability level.
MAX628CPA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Driven Configuration:
- Low-Side
- Channel Type:
- Independent
- Number of Drivers:
- 2
- Gate Type:
- N-Channel, P-Channel MOSFET
- Voltage - Supply:
- 4.5V ~ 18V
- Logic Voltage - VIL, VIH:
- 0.8V, 2.4V
- Current - Peak Output (Source, Sink):
- 2A, 2A
- Input Type:
- Inverting, Non-Inverting
- High Side Voltage - Max (Bootstrap):
- -
- Rise / Fall Time (Typ):
- 25ns, 20ns
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
MAX628CPA FAQ
1.How can I place an order for MAX628CPA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX628CPA 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 MAX628CPA reliable?
The price and inventory of MAX628CPA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX628CPA is usually 5 days.
3.What payment methods are accepted for MAX628CPA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX628CPA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX628CPA?
MAX628CPA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX628CPA 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 MAX628CPA?
For technical support, including MAX628CPA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX628CPA requirements.
6.How does Aetrix verify that MAX628CPA is sourced from the original manufacturer or authorized distributors?
All MAX628CPA 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 MAX628CPA meets industry standards.
7.What is the process for return or replacement of MAX628CPA?
All MAX628CPA units undergo pre-shipment inspection (PSI). If there is an issue with MAX628CPA, 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 MAX628CPA part is unused and in its original packaging.
Return procedure for MAX628CPA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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