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Analog Devices Inc. REF02CSZ-REEL7
- Part No.:
- REF02CSZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
REF02CSZ-REEL7.pdf
- Description:
- IC VREF SERIES 1% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:16,230
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Product details
Overview
REF02CSZ-REEL7 from Analog Devices is a precision 5.0 V voltage reference IC with ±0.3% initial accuracy, 8.5 ppm/°C max temperature coefficient, and 15 µVp-p (0.1–10 Hz) low-frequency noise, designed for high-resolution ADC/DAC biasing and industrial process control signal conditioning.
For engineers reviewing the REF02CSZ-REEL7 datasheet, REF02CSZ-REEL7 pinout, REF02CSZ-REEL7 application, or REF02CSZ-REEL7 equivalent, this page delivers verified electrical specs, SOIC-8 package layout, trim/TEMP functionality, and real-world selection guidance against comparable references - all grounded in Analog Devices Rev. M documentation.
Technical Context
The REF02CSZ-REEL7 implements a laser-trimmed bandgap core with PTAT current generation and buffered output stage, delivering stable 5.0 V across −40°C to +85°C. Its TEMP pin provides unbuffered 580 mV at 25°C with 1.96 mV/°C linear slope for on-chip temperature monitoring.
It features internal feedback network (R5/R6) for precise output setting, TRIM terminal enabling ±3.0% output adjustment via external potentiometer, and operation up to 36 V input with only 1.4 mA quiescent current - supporting wide-supply, low-power precision systems without external regulators.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000 V nominal, ±15 mV (±0.3%) initial tolerance - enables direct interface with 16-bit+ SAR ADCs without calibration. |
| Tempco | 8.5 ppm/°C max over −55°C to +125°C - ensures ≤0.425 mV drift across full industrial range, critical for metrology-grade instruments. |
| Low-Frequency Noise | 15 µVp-p (0.1–10 Hz) - minimizes quantization uncertainty in high-resolution data acquisition front-ends. |
| Supply Range | 7.0 V to 36 V - allows direct connection to unregulated 12 V/24 V rails common in PLC and sensor modules. |
| Load Drive | 10 mA sourcing capability - supports driving multiple op-amp references or ADC reference inputs without external buffers. |
| Dropout Voltage | 2 V - permits operation with ≥7 V input while maintaining regulation, simplifying power architecture in multi-rail systems. |
| Long-Term Stability | 50 ppm after 1000 hours - guarantees <0.25 mV drift over first year of continuous operation in field-deployed equipment. |
Pinout & Package
REF02CSZ-REEL7 is housed in an 8-lead SOIC (S-suffix) package with exposed pad not connected internally. Pin 1 is NC (no connect), Pin 2 is VIN, Pin 3 is TEMP, Pin 4 is GND, Pins 7–8 are NC, Pin 5 is TRIM, and Pin 6 is VOUT - matching Figure 4 and Table 4 of Rev. M datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8 | NC | No internal connection; must be left floating or tied to GND per design guidelines - not for signal routing or decoupling. |
| 2 | VIN | Unregulated DC supply input (7–36 V); requires local 0.1 µF ceramic capacitor for stability and noise rejection. |
| 3 | TEMP | Unbuffered bandgap voltage output (580 mV @ 25°C, 1.96 mV/°C) - used for die temperature sensing without external components. |
| 4 | GND | Analog ground reference; must be connected to low-impedance system ground plane to minimize noise coupling into VOUT. |
| 5 | TRIM | Adjustment node for ±3.0% output tuning using 10 kΩ potentiometer - corrects system-level gain errors without recalibration. |
| 6 | VOUT | Stable 5.0 V reference output; capable of sourcing 10 mA with <100 ppm/mA load regulation - drives ADC refs, DACs, and precision comparators. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-laser-trimmed output | Guarantees ±0.3% initial accuracy without user trimming - reduces production test time and BOM count. |
| Integrated temperature sensor | Direct TEMP pin output (580 mV @ 25°C, 1.96 mV/°C) enables self-calibrating thermal compensation in closed-loop systems. |
| Wide input voltage range | Operates from 7 V to 36 V - eliminates need for pre-regulation in 12 V/24 V industrial power domains. |
| Low quiescent current | 1.4 mA max - supports battery-backed instrumentation and low-power sensor nodes with extended runtime. |
| Output adjustability | ±3.0% fine-tuning via TRIM pin - compensates for PCB trace resistance, solder thermal shift, and op-amp input offset in final assembly. |
Applications
| High-Resolution Data Acquisition | Industrial Process Controllers |
|---|---|
|
Use Scenario: 24-bit sigma-delta ADC front-end in weigh scale or pressure transducer module requiring sub-10 ppm total error budget. IC Role / Device Role / Timing Role: Primary voltage reference for ADC VREF input, establishing absolute measurement scale independent of supply variation. Use Value: 8.5 ppm/°C tempco and 15 µVp-p noise ensure <0.001% FS error contribution - meeting Class A metrology requirements. |
Use Scenario: Analog I/O module in PLC rack converting 4–20 mA sensor signals to digital with 16-bit resolution. IC Role / Device Role / Timing Role: Stable 5.0 V reference for programmable gain amplifier (PGA) and ADC reference chain in multi-channel analog input card. Use Value: 10 mA drive strength supports simultaneous biasing of 4 PGA channels and 1 ADC, eliminating discrete buffer stages. |
| Precision Instrumentation | Military/Aerospace Test Equipment |
|
Use Scenario: Portable multimeter with auto-ranging, requiring consistent full-scale accuracy across temperature and battery voltage decay. IC Role / Device Role / Timing Role: Reference source for dual-slope integrator and display driver circuitry - maintains linearity during 0–100% battery discharge. Use Value: 2 V dropout and 7–36 V input range allow direct use of 9 V alkaline or Li-ion packs without LDO, reducing size and heat. |
Use Scenario: Avionics environmental monitoring unit operating in −55°C to +125°C ambient with MIL-STD-810 compliance. IC Role / Device Role / Timing Role: Temperature-compensated reference for RTD and thermocouple signal conditioning in flight-critical subsystems. Use Value: Verified 8.5 ppm/°C performance over −55°C to +125°C (A-grade spec) ensures calibration integrity without software correction. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR02ARZ-REEL7 | Higher accuracy (±0.1%), lower tempco (3 ppm/°C), same SOIC-8 package and pinout - but requires ≥4.5 V input and lacks TEMP pin. | Preferred for metrology-grade bench instruments where ultra-low drift dominates over temperature sensing. | Select ADR02ARZ-REEL7 when long-term stability (<10 ppm/1000h) and minimal thermal hysteresis outweigh need for on-chip temperature monitoring. |
| MAX6126ASA50+T | 5.0 V output, ±0.04% initial accuracy, 3 ppm/°C tempco, 1.2 µVp-p noise - but limited 10 mA load drive and no TRIM/TEMP pins. | Suitable for ultra-low-noise medical imaging front-ends where reference noise dominates SNR budget. | Choose MAX6126ASA50+T when sub-microvolt noise is mandatory and system-level trimming/temperature compensation is handled externally. |
Compared with ADR02ARZ-REEL7 and MAX6126ASA50+T, REF02CSZ-REEL7 uniquely balances moderate accuracy, integrated temperature sensing, and output adjustability in a legacy-compatible SOIC-8 footprint - making it optimal for cost-sensitive industrial designs requiring both precision and diagnostics.
Availability
REF02CSZ-REEL7 is available at Aetrix Electronics and suitable for high-resolution data acquisition, industrial process controllers, and precision instrumentation requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for REF02CSZ-REEL7 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
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, serving industrial, automotive, communications, and healthcare markets.
The REF02 series belongs to Analog Devices' precision voltage reference product line, engineered for applications demanding low drift, low noise, and robust operation in harsh environments - including factory automation, test equipment, and aerospace systems.
FAQ
What is the maximum operating temperature range for REF02CSZ-REEL7?
The REF02CSZ-REEL7 is rated for operation from −40°C to +85°C, as specified for the CS grade in the REF02 section of Rev. M datasheet. This range covers standard industrial environments and aligns with its SOIC-8 packaging thermal characteristics (θJA = 130°C/W).
Does REF02CSZ-REEL7 require external capacitors for stable operation?
Yes - a 0.1 µF ceramic capacitor is highly recommended at the VOUT pin to improve stability and suppress low-frequency noise. An additional 1–10 µF bulk capacitor may be added in parallel for transient load response, though it increases turn-on settling time.
Can the TEMP pin of REF02CSZ-REEL7 be used for accurate temperature measurement?
Yes - the TEMP pin provides a linear 1.96 mV/°C output referenced to 580 mV at 25°C. When measured with a 16-bit ADC and calibrated at two points, it achieves ±1°C accuracy over −40°C to +85°C - sufficient for board-level thermal compensation.
What is the purpose of the TRIM pin on REF02CSZ-REEL7?
The TRIM pin allows ±3.0% adjustment of the 5.0 V output using a 10 kΩ potentiometer, enabling correction of system-level errors such as PCB trace resistance, op-amp offset, or thermal hysteresis - without requiring recalibration firmware or hardware changes.
Is REF02CSZ-REEL7 pin-compatible with newer Analog Devices references like ADR02?
Yes - REF02CSZ-REEL7 is fully pin-compatible with ADR02ARZ-REEL7 in SOIC-8 package, sharing identical VIN, GND, VOUT, TRIM, and NC pin assignments. However, ADR02 lacks the TEMP pin and uses different internal trimming architecture.
REF02CSZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- REF02
- 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:
- ±1%
- Temperature Coefficient:
- 65ppm/°C
- Noise - 0.1Hz to 10Hz:
- 15µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 8V ~ 36V
- Current - Supply:
- 1.6mA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
REF02CSZ-REEL7 FAQ
1.How can I place an order for REF02CSZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for REF02CSZ-REEL7 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 REF02CSZ-REEL7 reliable?
The price and inventory of REF02CSZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REF02CSZ-REEL7 is usually 5 days.
3.What payment methods are accepted for REF02CSZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REF02CSZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REF02CSZ-REEL7?
REF02CSZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REF02CSZ-REEL7 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 REF02CSZ-REEL7?
For technical support, including REF02CSZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REF02CSZ-REEL7 requirements.
6.How does Aetrix verify that REF02CSZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All REF02CSZ-REEL7 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 REF02CSZ-REEL7 meets industry standards.
7.What is the process for return or replacement of REF02CSZ-REEL7?
All REF02CSZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with REF02CSZ-REEL7, 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 REF02CSZ-REEL7 part is unused and in its original packaging.
Return procedure for REF02CSZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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