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Analog Devices Inc./Maxim Integrated MAX675CSA+T
- Part No.:
- MAX675CSA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX675CSA+T.pdf
- Description:
- IC VREF SERIES 0.15% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,935
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Product details
Overview
The MAX675CSA+T from Maxim Integrated is a precision +5V voltage reference IC pretrimmed to ±0.15% initial accuracy, featuring 12ppm/°C temperature coefficient, 10µVP-P low-frequency noise (0.1Hz–10Hz), and 1.4mA max supply current. It operates from 15V input, delivers up to 10mA load current, and is used in high-accuracy data-conversion systems requiring stable reference voltage.
For engineers reviewing the MAX675CSA+T datasheet, MAX675CSA+T pinout, MAX675CSA+T application, or MAX675CSA+T equivalent, key selection criteria include initial output tolerance, thermal drift performance, trim capability for system calibration, and compatibility with narrow SO-8 PCB footprints in space-constrained instrumentation designs.
Technical Context
The MAX675CSA+T integrates a bandgap-based reference core with on-chip trimming, enabling factory-set +5V output with ±7mV (±0.15%) initial error. Its TEMP pin provides a linear 2.1mV/°C absolute-temperature voltage output, decoupled from reference performance.
It supports output adjustment via external 10kΩ potentiometer on the TRIM pin, shifting VOUT by ±150mV without degrading temperature stability beyond +0.7ppm/°C per 100mV shift. Load regulation is specified at 0.001%/mA, and line regulation at 0.01%/V over 18V–33V input range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +5.000V ±7mV (±0.15%) at 25°C, no load - enables direct replacement of 5V references in ADC/DAC gain-setting circuits |
| Tempco | 12ppm/°C max (0°C to +70°C) - ensures ≤0.6mV drift over full commercial temperature range |
| Noise | 10µVP-P (0.1Hz–10Hz) - minimizes quantization uncertainty in 16-bit+ data converters |
| Quiescent Current | 1.4mA max - supports low-power portable instrumentation with minimal supply burden |
| Load Regulation | 0.001%/mA - maintains <±10µV change per mA load shift, critical for ratiometric sensor interfaces |
| Trim Range | ±150mV with 10kΩ pot - allows precise binary-scaled outputs (e.g., 5.120V) without external op-amps |
| Turn-On Settling | 5µs to ±0.1% - supports fast-cycling measurement systems with minimal acquisition delay |
Pinout & Package
MAX675CSA+T is housed in an 8-pin narrow SO package (SOIC-N), 3.9mm × 4.9mm body, 1.27mm pitch, gull-wing leads. RoHS-compliant, tape-and-reel packaging (3000 pcs/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VOUT | Reference Output | Stable +5V source; requires 1µF ceramic bypass capacitor for noise suppression |
| 2 - TRIM | Output Adjustment | High-impedance node; connect 10kΩ potentiometer wiper to adjust VOUT ±150mV |
| 3 - GND | Analog Ground | Return path for reference core and TEMP output; must be star-connected to minimize ground bounce |
| 4 - VIN | Positive Supply Input | Operates from +15V nominal; absolute max 40V; internal short-circuit protection active |
| 5 - TEMP | Absolute-Temp Sensor | Outputs 2.1mV/°C (e.g., 630mV at 25°C); calibrated independently of VOUT |
| 6–8 - N.C. | No Connect | Internally unconnected; must remain floating or tied to GND per layout best practice |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed +5V output | Eliminates external calibration resistors in production test fixtures and automated test equipment |
| Dual-function TEMP pin | Provides calibrated temperature sensing without adding discrete sensors or signal-conditioning circuitry |
| Low 10µVP-P noise | Enables sub-LSB noise floor in 18-bit SAR ADCs when used as reference and analog supply |
| Pin-for-pin compatibility with REF02 | Allows drop-in upgrade path from older references without PCB redesign or firmware changes |
| Short-circuit protected output | Sustains indefinite output-to-ground or output-to-VIN faults without latch-up or parametric shift |
Applications
| High-Accuracy Data Acquisition | Precision Calibration Standards |
|---|---|
Use Scenario: 16-bit industrial DAQ module measuring thermocouple and RTD signals with ratiometric ADC architecture. IC Role / Device Role / Timing Role: Primary voltage reference for ADC and DAC; TEMP pin feeds microcontroller ADC for cold-junction compensation. Use Value: 12ppm/°C tempco and 0.001%/mA load regulation ensure <±0.01% full-scale error across ambient and load variations. | Use Scenario: Benchtop digital multimeter requiring traceable 5.000V reference for self-calibration routine. IC Role / Device Role / Timing Role: Stable 5V source trimmed to 5.000V using onboard potentiometer; TEMP pin monitors internal die temperature for drift correction. Use Value: ±0.15% initial accuracy and ±150mV trim range enable factory calibration to ±10ppm without laser trimming. |
| ±5V Dual-Supply Reference | Remote Temperature Transducer |
Use Scenario: Signal conditioning board generating matched ±5V rails for op-amp biasing in precision analog front-ends. IC Role / Device Role / Timing Role: +5V reference feeding inverting amplifier to generate -5V rail; TRIM pin adjusted to balance positive/negative rail mismatch. Use Value: Trim capability compensates for op-amp offset and resistor tolerance, achieving <±0.02% rail symmetry. | Use Scenario: Environmental monitoring node with remote temperature probe connected via shielded cable. IC Role / Device Role / Timing Role: MAX675CSA+T mounted locally; TEMP pin drives remote sensor interface with 10mV/°C scaling via MAX400 op-amp buffer. Use Value: On-die TEMP output eliminates need for external temperature sensor IC and reduces BOM count by one component. |
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 pinout, ±0.3% initial accuracy, 25ppm/°C tempco, no TEMP pin | Lacks temperature-sensing function; higher drift limits use in wide-temp industrial environments | Select REF02CP only if TEMP functionality is unnecessary and cost sensitivity outweighs long-term stability needs |
| ADR445BRZ | 5.000V output, ±0.04% initial accuracy, 3ppm/°C tempco, 1.8µVP-P noise, SO-8 | Superior specs but higher cost and no integrated TEMP output; requires external temp sensor for compensation | Choose ADR445BRZ when ultimate accuracy and low noise are mandatory, and TEMP function is handled separately |
Compared with REF02CP and ADR445BRZ, the MAX675CSA+T uniquely combines tight initial tolerance, low tempco, ultra-low noise, and integrated temperature sensing in a single SO-8 package-making it optimal for compact, multi-function calibration and sensor signal-chain designs where board space and component count are constrained.
Availability
MAX675CSA+T is available at Aetrix Electronics and suitable for high-accuracy data acquisition, precision calibration standards, and ±5V dual-supply reference applications requiring stable component supply across extended production lifecycles.
Supply support for MAX675CSA+T 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 systems.
The MAX675CSA+T belongs to Maxim's precision voltage reference product line, engineered for applications demanding factory-trimmed accuracy, low thermal drift, and integrated diagnostic features like temperature monitoring-all within standard SO-8 footprints.
FAQ
What is the operating temperature range for the MAX675CSA+T?
The MAX675CSA+T is rated for operation from 0°C to +70°C (commercial grade). This range is confirmed in the official Maxim ordering table, where "CSA" denotes the narrow SO-8 package with 0°C to +70°C specification. The device maintains its 12ppm/°C temperature coefficient and ±0.15% initial accuracy across this full range, making it suitable for indoor industrial and test equipment environments.
Does the MAX675CSA+T require external capacitors for stability?
Yes, the MAX675CSA+T requires a 1µF ceramic capacitor between VOUT and GND for optimal noise performance and transient response. The datasheet specifies this value in the Typical Operating Circuit and notes that larger values may degrade settling time. No capacitor is required on the TRIM or TEMP pins, but the TEMP output should be buffered with a unity-gain op-amp if driving capacitive loads exceeding 30pF.
Can the MAX675CSA+T be used as a temperature sensor alone, without using the VOUT pin?
Yes, the MAX675CSA+T can be used solely for temperature sensing via the TEMP pin, which outputs a linear 2.1mV/°C voltage proportional to absolute temperature (e.g., 630mV at 25°C). The reference core remains inactive if VIN is unpowered, but the TEMP output is only valid when VIN ≥ 8V and the device is within its operating temperature range. This dual-use capability eliminates the need for a separate temperature sensor IC in many designs.
Is the MAX675CSA+T pin-compatible with other MAX675 variants?
Yes, all MAX675 variants-including MAX675CPA (PDIP), MAX675CSA+T (narrow SO), and MAX675EPA (extended-temp PDIP)-share identical 8-pin configurations and pin functions. The narrow SO package maintains the same pin numbering and electrical behavior as the DIP version, enabling direct footprint substitution when upgrading from through-hole to surface-mount assembly without schematic or layout changes.
What is the maximum load current the MAX675CSA+T can drive continuously?
The MAX675CSA+T is specified to deliver up to 10mA continuous load current while maintaining output regulation within datasheet limits. The "Maximum Load Current vs. Input Voltage" graph shows 10mA is sustainable at VIN = 15V and TA = +25°C. At higher temperatures or lower input voltages, derating applies-e.g., ~7mA at +70°C and VIN = 15V per the "Maximum Load Current vs. Temperature" curve. Exceeding these limits risks output droop or thermal shutdown.
MAX675CSA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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+T FAQ
1.How can I place an order for MAX675CSA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX675CSA+T 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+T reliable?
The price and inventory of MAX675CSA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX675CSA+T is usually 5 days.
3.What payment methods are accepted for MAX675CSA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX675CSA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX675CSA+T?
MAX675CSA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX675CSA+T 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+T?
For technical support, including MAX675CSA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX675CSA+T requirements.
6.How does Aetrix verify that MAX675CSA+T is sourced from the original manufacturer or authorized distributors?
All MAX675CSA+T 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+T meets industry standards.
7.What is the process for return or replacement of MAX675CSA+T?
All MAX675CSA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX675CSA+T, 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+T part is unused and in its original packaging.
Return procedure for MAX675CSA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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