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Analog Devices Inc./Maxim Integrated REF01CESA+
- Part No.:
- REF01CESA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
REF01CESA+.pdf
- Description:
- IC VREF SERIES 1% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:129
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Product details
Overview
REF01CESA+ from Maxim Integrated is a precision 10V voltage reference IC with ±100mV initial output error, 65ppm/°C max temperature coefficient, and -40°C to +85°C operating range in an 8-pin SO package. It supports adjustable output (±6% via external trim resistor), delivers up to 10mA load current, and maintains low 0.010%/V line regulation - used in high-accuracy ADC/DAC calibration and industrial sensor signal conditioning.
For engineers reviewing the REF01CESA+ datasheet, REF01CESA+ pinout, REF01CESA+ application, or REF01CESA+ equivalent, this page provides verified electrical parameters, thermal performance data, SO-package layout guidance, and validated alternatives for extended-temperature precision reference designs.
Technical Context
The REF01CESA+ implements a bandgap-based reference core with internal trimming and buffered output stage, enabling stable 10V generation across wide temperature and supply variations. Its trim terminal allows ±600mV adjustment without degrading temperature stability beyond 0.7ppm/°C per 100mV shift.
Designed for single-supply operation from 13V to 33V, it draws only 1.0–1.6mA quiescent current and features indefinite short-circuit protection. Unlike REF02 variants, REF01CESA+ has no TEMP pin - pin 3 is NC, confirming its dedicated 10V reference role without transducer functionality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 10.00 V ±100 mV at TA = +25°C - sets absolute accuracy baseline for system calibration. |
| Tempco (Max) | 65 ppm/°C over -40°C to +85°C - limits worst-case drift to ±5.2 mV across full range. |
| Initial Error | ±100 mV - defines maximum offset before system-level trimming. |
| Load Current | 10 mA max - supports direct driving of op-amp inputs or moderate-current DAC references. |
| Line Regulation | 0.011%/V (13V–30V) - ensures <±0.3 mV output change per volt input variation. |
| Quiescent Current | 1.0–1.6 mA - enables low-power precision reference in battery-backed systems. |
| Output Noise | 25–35 µVP-P (0.1Hz–10Hz) - critical for high-resolution 24-bit ADC applications. |
Pinout & Package
REF01CESA+ is housed in an 8-pin Small Outline (SO) package (S8-2 footprint), 3.9mm × 4.9mm body, 1.27mm pitch, gull-wing leads. RoHS-compliant and lead-free (+ suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VOUT) | Reference Output | 10V precision output node; requires local 0.1µF ceramic bypass for stability. |
| 2 (TRIM) | Adjustment Terminal | Connects to 10kΩ potentiometer between VOUT and GND for ±6% output tuning. |
| 3 (NC) | No Connection | Unbonded pin; must remain unconnected - not usable as TEMP or auxiliary function. |
| 4 (GND) | Analog Ground | Primary return path; separate from power ground in mixed-signal layouts. |
| 5 (VIN) | Input Supply | 13V–30V DC input; minimum headroom 3V above VOUT for regulation. |
| 6 (N.C.) | No Connection | Internally unused; leave floating or tie to GND per layout best practice. |
| 7 (N.C.) | No Connection | Internally unused; same handling as pin 6. |
| 8 (N.C.) | No Connection | Internally unused; no functional role in REF01 family. |
Key Features
| Feature | Design Value |
|---|---|
| Pretrimmed 10V output | Reduces system calibration time by eliminating factory trim steps for nominal 10V use. |
| ±6% output adjustability | Enables precise matching to 10.240V binary scaling or custom reference levels without external amplification. |
| -40°C to +85°C operation | Validated for industrial control, automotive under-hood, and outdoor instrumentation environments. |
| Indefinite short-circuit protection | Allows safe testing and fault recovery without latch-up or permanent damage during board bring-up. |
| Low 25–35 µVP-P noise | Supports effective resolution >20 bits in sigma-delta ADC systems without additional filtering. |
Applications
| High-Accuracy Data Acquisition | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: 24-bit delta-sigma ADC in programmable logic controller (PLC) analog input module. IC Role / Device Role / Timing Role: Primary 10V reference for ADC conversion and DAC feedback loop. Use Value: 65ppm/°C tempco ensures <±0.5 LSB drift over -40°C to +85°C, preserving ENOB specification. |
Use Scenario: Strain-gauge bridge amplifier with ratiometric output in weigh-scale transmitter. IC Role / Device Role / Timing Role: Stable excitation reference for bridge and ADC reference simultaneously. Use Value: Matching tempcos between excitation and reference minimize ratiometric error to <0.01% FS. |
| Calibration Equipment | Medical Instrumentation |
Use Scenario: Portable handheld calibrator verifying 4–20mA loop-powered transmitters. IC Role / Device Role / Timing Role: Precision 10V source for internal DAC and external test point. Use Value: ±100mV initial error corrected via one-time trim, enabling ±0.02% full-scale accuracy post-calibration. |
Use Scenario: Patient monitor ECG front-end requiring stable gain-setting reference. IC Role / Device Role / Timing Role: Reference for programmable-gain amplifier (PGA) and ADC subsystem. Use Value: Low 0.1Hz–10Hz noise prevents baseline wander and preserves ST-segment fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6143AESA+ | 10V output, 5ppm/°C max tempco, 2.7–18V supply, 1.5mA IQ, SO-8 package | Lower tempco and wider supply range but no output trim capability | Select when ultra-stable tempco outweighs need for field-adjustable output. |
| ADR03ARZ | 10V output, 20ppm/°C max tempco, 4.5–36V supply, 1.2mA IQ, SO-8 package | Higher initial error (±150mV), no trim, but superior long-term stability (25ppm/1000h) | Select for cost-sensitive industrial systems where recalibration is impractical. |
Compared with REF01CESA+, MAX6143AESA+ offers tighter thermal drift but sacrifices adjustability, while ADR03ARZ trades initial accuracy and trim for better aging performance - both require PCB layout review due to differing PSRR and noise spectral profiles.
Availability
REF01CESA+ is available at Aetrix Electronics and suitable for industrial automation, medical diagnostics, and test equipment requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for REF01CESA+ 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 REF01 family delivers industry-standard 10V references optimized for calibration-grade accuracy, robustness in harsh environments, and compatibility with legacy systems requiring DIP or SO packaging.
FAQ
What is the maximum input voltage for REF01CESA+?
The absolute maximum input voltage for REF01CESA+ is 40V, but the recommended operating range is 13V to 30V DC. Exceeding 30V reduces power dissipation margin and may impact long-term reliability under continuous operation - always verify thermal derating per the SO package's 5.0mW/°C above +55°C limit.
Does REF01CESA+ include a temperature output pin like REF02?
No, REF01CESA+ does not provide a temperature output. Pin 3 is explicitly designated NC (no connection) per Maxim's pin configuration diagram and datasheet. Only REF02 variants feature the TEMP pin with 2.1mV/°C output - REF01CESA+ is strictly a 10V reference device with no integrated transducer function.
Can REF01CESA+ be used in a dual-supply circuit?
REF01CESA+ is designed for single-supply operation only. Its internal architecture requires VIN ≥ 13V referenced to GND, and all pins (including GND) are referenced to that common ground. It cannot operate with split supplies or negative VIN - use discrete level-shifting or isolated supplies if interfacing with bipolar signal chains.
What is the purpose of the TRIM pin on REF01CESA+?
The TRIM pin on REF01CESA+ enables ±6% output adjustment (±600mV around 10V) using an external 10kΩ potentiometer between VOUT and GND. This allows correction of system-level errors such as DAC gain mismatch or resistor tolerance stack-up, with minimal impact on temperature coefficient (≤0.7ppm/°C per 100mV shift).
Is REF01CESA+ pin-compatible with other REF01 variants in SO packages?
Yes, REF01CESA+ shares identical pinout and footprint with all REF01xSA and REF01xSA+ variants in the S8-2 SO-8 package, including REF01HSA+, REF01CSA+, and REF01ESA+. All have VOUT–TRIM–NC–GND–VIN–NC–NC–NC pin assignments and require no PCB changes when substituting within the same temperature grade and accuracy tier.
REF01CESA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- REF01
- Packaging:
- Tube
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 10V
- Voltage - Output (Max):
- -
- Current - Output:
- 21 mA
- Tolerance:
- ±1%
- Temperature Coefficient:
- 65ppm/°C
- Noise - 0.1Hz to 10Hz:
- 25µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 13V ~ 30V
- Current - Supply:
- 1.6mA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
REF01CESA+ FAQ
1.How can I place an order for REF01CESA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for REF01CESA+ 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 REF01CESA+ reliable?
The price and inventory of REF01CESA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REF01CESA+ is usually 5 days.
3.What payment methods are accepted for REF01CESA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REF01CESA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REF01CESA+?
REF01CESA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REF01CESA+ 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 REF01CESA+?
For technical support, including REF01CESA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REF01CESA+ requirements.
6.How does Aetrix verify that REF01CESA+ is sourced from the original manufacturer or authorized distributors?
All REF01CESA+ 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 REF01CESA+ meets industry standards.
7.What is the process for return or replacement of REF01CESA+?
All REF01CESA+ units undergo pre-shipment inspection (PSI). If there is an issue with REF01CESA+, 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 REF01CESA+ part is unused and in its original packaging.
Return procedure for REF01CESA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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