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Analog Devices Inc./Maxim Integrated MAX675CSA+
- Part No.:
- MAX675CSA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX675CSA+.pdf
- Description:
- IC VREF SERIES 0.15% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,288
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Product details
Overview
MAX675CSA+ from Maxim Integrated is a precision +5V voltage reference IC with ±0.15% initial accuracy, 12ppm/°C temperature coefficient, and 10µVP-P low-frequency noise (0.1Hz–10Hz), designed for high-accuracy analog signal conditioning in data converters and calibration systems.
For engineers reviewing the MAX675CSA+ datasheet, MAX675CSA+ pinout, MAX675CSA+ application, or MAX675CSA+ equivalent, key selection criteria include output trim capability (±150mV), load regulation (0.001%/mA), short-circuit protection, and narrow SO-8 package compatibility with REF02-based designs.
Technical Context
The MAX675CSA+ integrates a bandgap core with on-chip trimming to achieve ±7mV (±0.15%) initial output tolerance at +5V. Its TEMP pin delivers a proportional absolute temperature voltage (2.1mV/°C), enabling dual-use as a precision reference and remote temperature sensor.
It operates from 4V to 40V input, supports up to 10mA load current at +25°C, and features internal short-circuit protection with indefinite ground/VIN fault tolerance. Turn-on settling time is 5µs to ±0.1% of final value.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +5.000V ±7mV (±0.15%) at 0mA load, enabling direct replacement in 5V ADC/DAC reference rails |
| Tempco | 12ppm/°C max (0°C to +70°C), ensuring ≤0.6mV drift over full operating range |
| Noise | 10µVP-P (0.1Hz–10Hz), critical for 16-bit+ converter LSB stability |
| Load Regulation | 0.001%/mA, limiting output shift to 0.01% over 10mA load variation |
| Quiescent Current | 750µA to 1400µA, supporting low-power portable instrumentation |
| Trim Range | ±150mV via external 10kΩ potentiometer, allowing binary-scaled outputs (e.g., 5.120V) |
| TEMP Pin Output | 630mV at +25°C, scaling linearly at 2.1mV/°C for calibrated temperature sensing |
Pinout & Package
MAX675CSA+ is housed in an 8-pin narrow SO (SOIC-N) package, 3.9mm × 4.9mm body, 1.27mm pitch, JEDEC MS-012 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VOUT | Reference Output | Stable +5V source; requires 0.1µF ceramic bypass for noise suppression |
| 2 - TRIM | Output Adjustment | Connects to wiper of 10kΩ potentiometer for ±150mV fine-tuning |
| 3 - GND | Analog Ground | Return path for reference and TEMP circuits; must be star-connected to minimize noise |
| 4 - VIN | Input Supply | Accepts 4V–40V; internal regulator enables operation across wide industrial supply rails |
| 5 - TEMP | Temperature Sensor Output | Delivers 2.1mV/°C voltage proportional to absolute temperature (T + 273K) |
| 6 - N.C. | No Connect | Internally unconnected; must remain floating per datasheet |
| 7 - N.C. | No Connect | Internally unconnected; must remain floating per datasheet |
| 8 - N.C. | No Connect | Internally unconnected; must remain floating per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| Pretrimmed +5V Output | Guaranteed ±0.15% initial accuracy eliminates system-level calibration for most 12-bit applications |
| Integrated TEMP Pin | Provides factory-calibrated 2.1mV/°C output, removing need for external temperature sensor in dual-function designs |
| Low 10µVP-P Noise | Enables stable LSB performance in 16-bit SAR and sigma-delta ADCs without additional filtering |
| Short-Circuit Protected | Withstands indefinite output short to GND or VIN, improving field reliability in test equipment |
| REF02 Pin Compatibility | Direct PCB replacement for REF02 in existing SO-8 layouts, reducing redesign effort |
Applications
| High-Accuracy Calibration Standard | ±5V Dual Rail Reference |
|---|---|
Use Scenario: Benchtop digital multimeter requiring traceable 5.000V reference for self-calibration. IC Role / Device Role / Timing Role: Primary voltage reference source with trim-adjusted output (e.g., 5.120V) for binary-weighted DAC testing. Use Value: ±7mV initial error and 12ppm/°C tempco ensure <0.01% total uncertainty over 0°C–70°C operating range. | Use Scenario: Industrial PLC analog I/O module needing matched +5V and –5V reference rails. IC Role / Device Role / Timing Role: Positive reference generator paired with MAX400 op-amp to derive symmetric ±5V supplies. Use Value: Load regulation of 0.001%/mA maintains rail matching within 50µV across 0–10mA channel loads. |
| Precision Temperature Transducer | Current Source Reference |
Use Scenario: Remote temperature monitoring in HVAC control using shielded 4-conductor cable. IC Role / Device Role / Timing Role: Combined reference and temperature sensor-VOUT sets ADC full-scale, TEMP provides linear mV/°C output. Use Value: Single-device dual functionality reduces BOM count and eliminates inter-channel gain/offset mismatch. | Use Scenario: Precision current source for 4–20mA loop transmitter with 0.1% accuracy requirement. IC Role / Device Role / Timing Role: Stable 5V reference driving current-setting resistor network with thermal compensation. Use Value: 10µVP-P noise ensures <1µA current ripple, meeting IEC 61000-4-5 immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF02CP | Same pinout, ±0.3% initial accuracy, 25ppm/°C tempco, no TEMP pin | Lacks integrated temperature sensing; higher initial error requires system calibration | Choose when only reference function is needed and cost sensitivity outweighs precision/temp features |
| MAX6126AASA50 | 5.0V, ±0.06% initial accuracy, 3ppm/°C tempco, 5.6µVP-P noise, no trim or TEMP pin | Higher precision but no output adjustment or temperature output; SO-8 package | Choose for ultra-low-drift applications where trim flexibility and dual functionality are not required |
Compared with REF02CP and MAX6126AASA50, the MAX675CSA+ uniquely combines tight initial accuracy, user-trimmable output, and integrated temperature sensing in one SO-8 device-enabling compact dual-function designs without sacrificing 12ppm/°C stability.
Availability
MAX675CSA+ is available at Aetrix Electronics and suitable for precision data acquisition, automated test equipment, and industrial calibration systems requiring stable component supply across extended production lifecycles.
Supply support for MAX675CSA+ 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 MAX675CSA+ belongs to Maxim's high-stability voltage reference product line, engineered specifically for applications demanding simultaneous precision reference and temperature sensing in minimal board space.
FAQ
What is the operating temperature range for the MAX675CSA+?
The MAX675CSA+ is rated for 0°C to +70°C operation, as confirmed in the official Maxim ordering information table. This commercial-grade temperature range aligns with its "C" suffix designation and supports use in laboratory instruments, industrial controllers, and non-automotive embedded systems where ambient conditions remain within this envelope. The device maintains guaranteed 12ppm/°C tempco and ±7mV output tolerance across this full range.
Can the MAX675CSA+ be used as a temperature sensor?
Yes-the MAX675CSA+ provides a dedicated TEMP pin delivering a voltage proportional to absolute temperature at 2.1mV/°C (e.g., 630mV at +25°C). This feature is explicitly documented in the "Temperature Voltage Output" section and Figure 2 of the datasheet. It enables the MAX675CSA+ to serve dual roles: precision +5V reference and calibrated temperature transducer-without external components.
Does the MAX675CSA+ require external capacitors for stability?
Yes-the MAX675CSA+ requires a 0.1µF ceramic capacitor between VOUT and GND, as shown in all typical operating circuits (Figures 3–6) and stated in the "Typical Operating Circuit" section. This capacitor suppresses high-frequency noise and ensures output stability under dynamic load conditions. Omitting it may degrade noise performance and transient response, particularly in high-resolution ADC applications.
Is the MAX675CSA+ pin-compatible with the REF02?
Yes-the datasheet explicitly states "Pin-for-Pin Compatible with REF02" in the Features list and confirms identical SO-8 and PDIP pinouts. Both devices share the same VOUT, TRIM, GND, VIN, and TEMP pin assignments (with unused pins in same locations). This allows drop-in replacement in existing REF02-based PCBs, provided the TEMP pin is either utilized or left unconnected.
What is the maximum load current supported by the MAX675CSA+?
The MAX675CSA+ supports up to 10mA load current at +25°C, as specified in the "Maximum Load Current vs. Temperature" graph (Figure 4) and confirmed by the Load Regulation test condition (IL = 0 to 10mA). At elevated temperatures or lower input voltages, the safe load current decreases-e.g., ~5mA at +70°C with VIN = 15V-per the derating curves in the Typical Operating Characteristics.
MAX675CSA+ 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:
- ±0.15%
- Temperature Coefficient:
- 12ppm/°C
- Noise - 0.1Hz to 10Hz:
- 10µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 18V ~ 33V
- Current - Supply:
- 1.4mA
- Current - Cathode:
- -
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX675CSA+ FAQ
1.How can I place an order for MAX675CSA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX675CSA+ 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 MAX675CSA+ reliable?
The price and inventory of MAX675CSA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX675CSA+ is usually 5 days.
3.What payment methods are accepted for MAX675CSA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX675CSA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX675CSA+?
MAX675CSA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX675CSA+ 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 MAX675CSA+?
For technical support, including MAX675CSA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX675CSA+ requirements.
6.How does Aetrix verify that MAX675CSA+ is sourced from the original manufacturer or authorized distributors?
All MAX675CSA+ 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 MAX675CSA+ meets industry standards.
7.What is the process for return or replacement of MAX675CSA+?
All MAX675CSA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX675CSA+, 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 MAX675CSA+ part is unused and in its original packaging.
Return procedure for MAX675CSA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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