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Analog Devices Inc. ADR293ERZ-REEL
- Part No.:
- ADR293ERZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADR293ERZ-REEL.pdf
- Description:
- IC VREF SERIES 0.06% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,350
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Product details
Overview
ADR293ERZ-REEL from Analog Devices is a low-noise, micropower 5.0 V precision voltage reference IC using XFET® technology, delivering ±3 mV initial accuracy, 8 ppm/°C max temperature coefficient, and 15 μVp-p (0.1 Hz–10 Hz) noise. It operates from 6.0 V to 15 V supply, draws ≤15 μA quiescent current, and supports 5 mA output load-ideal for battery-powered instrumentation and high-resolution ADC/DAC references.
For engineers reviewing the ADR293ERZ-REEL datasheet, ADR293ERZ-REEL pinout, ADR293ERZ-REEL application, or ADR293ERZ-REEL equivalent, this page provides verified package mapping (8-lead SOIC_N), terminal roles, real-world performance boundaries (−40°C to +125°C), and validated alternatives for portable, solar-powered, and loop-current instrument designs.
Technical Context
The ADR293ERZ-REEL implements an XFET® reference core-two JFETs with differential pinch-off voltage amplified to generate a stable ~0.5 V intrinsic reference, compensated by a PTAT current source. This architecture achieves ultralow thermal hysteresis (72 ppm in SOIC_N) and one-quarter the noise of bandgap references at comparable supply current.
As a series-connected shunt-mode reference, it requires ≥0.5 V headroom (VIN − VOUT) across full load (0–5 mA) and temperature (−40°C to +125°C), maintains 30 ppm/V line regulation and 30 ppm/mA load regulation at 25°C, and features Kelvin-compatible force/sense capability via dedicated NC pins reserved for internal manufacturing routing-not user connection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000 V ±3 mV (E grade, 25°C, 0 mA load)-enables direct 5 V system referencing without trimming. |
| Initial Accuracy | ±3 mV (0.06%)-supports 16-bit ADCs (e.g., AD768x) without calibration in portable instruments. |
| Temp Coefficient | 8 ppm/°C max (−40°C to +125°C)-ensures ≤±1 mV drift over full industrial range. |
| Noise (0.1–10 Hz) | 15 μVp-p typical-critical for low-frequency sensor signal chains (e.g., strain gauge bridges). |
| Supply Current | 15 μA max @ 25°C-extends battery life >10 years in solar-powered remote sensors (10 μA avg, CR2032). |
| Output Current | 5 mA sourcing-drives ADC reference inputs, op-amp bias networks, and small DAC loads directly. |
| Line Regulation | 30 ppm/V typical (6–15 V)-rejects input ripple in unregulated battery+LDO systems. |
| Load Regulation | 30 ppm/mA typical (0–5 mA)-maintains stability when driving variable analog front-ends. |
Pinout & Package
ADR293ERZ-REEL is packaged in an 8-lead narrow-body SOIC (SOIC_N, R-8), JEDEC MS-012-AA compliant, with 1.27 mm lead pitch and 5.00 mm × 4.00 mm body. Pin 1 is marked by notch or bevel; NC pins are internally connected but not user-accessible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NC | No connect-internal test node; must remain floating per datasheet. |
| 2 | VIN | Input supply (6–15 V); minimum 0.5 V headroom required for regulation. |
| 3 | NC | No connect-internal test node; must remain floating. |
| 4 | GND | Analog ground reference; star-point connection critical for noise control. |
| 5 | NC | No connect-internal test node; must remain floating. |
| 6 | VOUT | Stable 5.0 V output; bypass with 0.1 µF ceramic + 10 µF tantalum for transient immunity. |
| 7 | NC | No connect-internal test node; must remain floating. |
| 8 | NC | No connect-internal test node; must remain floating. |
Key Features
| Feature | Design Value |
|---|---|
| XFET® reference architecture | Delivers 15 μVp-p noise and 72 ppm thermal hysteresis-superior to bandgap and buried Zener alternatives in portable systems. |
| 15 μA max supply current | Enables decade-scale operation on coin cells (e.g., CR2032) in wireless sensor nodes without duty cycling. |
| 5 mA output drive | Eliminates external buffer op-amps in 12–16 bit data acquisition systems, reducing BOM count and layout area. |
| −40°C to +125°C operation | Validated for under-hood automotive sensors and industrial field transmitters without derating. |
| Pin-compatible with REF02/REF19x | Allows drop-in replacement in legacy 5 V reference designs-no PCB rework needed. |
Applications
| Portable Instrumentation | Precision ADC Reference |
|---|---|
|
Use Scenario: Handheld multimeters and battery-operated gas analyzers requiring stable 5 V reference over wide temperature swings and multi-year battery life. IC Role / Device Role / Timing Role: Primary voltage reference for SAR ADCs (e.g., AD7980) and analog front-end gain stages. Use Value: 8 ppm/°C TC and 15 μA supply current enable ±0.01% measurement accuracy and >5-year CR2032 operation. |
Use Scenario: High-resolution data loggers capturing thermocouple or RTD signals with 16+ bit resolution. IC Role / Device Role / Timing Role: Low-noise, low-drift reference for sigma-delta ADCs (e.g., AD7793) in precision sensor interfaces. Use Value: 15 μVp-p noise ensures <0.5 LSB noise floor in 16-bit conversions at 10 SPS. |
| Solar-Powered Sensors | Loop-Powered Instruments |
|
Use Scenario: Remote environmental monitors powered by small solar panels and supercapacitors, operating intermittently in desert climates (−40°C to +85°C). IC Role / Device Role / Timing Role: Reference for ultra-low-power microcontrollers (e.g., ADuCM3029) and analog signal conditioning. Use Value: 15 μA quiescent current allows continuous reference operation during low-light periods without draining energy storage. |
Use Scenario: 4–20 mA loop-powered pressure transmitters where power budget is fixed at 3.5 mA total. IC Role / Device Role / Timing Role: Precision reference for current-loop DACs (e.g., AD5422) and sensor excitation circuits. Use Value: 5 mA output drive and 30 ppm/mA load regulation ensure stable 4–20 mA output accuracy across full span. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR293ERZ | Same E-grade specs (±3 mV, 8 ppm/°C), identical SOIC_N package, but supplied in tube (98 pcs) vs. reel (2500 pcs). | No functional difference; suited for prototyping or low-volume production where reel handling is unnecessary. | Select ADR293ERZ-REEL for automated SMT assembly; choose ADR293ERZ for bench validation or small-batch builds. |
| REF02CPZ-REEL7 | Higher 1.5 mA supply current, ±5 mV initial accuracy, 25 ppm/°C TC, and 40 μVp-p noise-less precise and noisier than ADR293ERZ-REEL. | Acceptable only in cost-sensitive, non-battery applications where 5 V reference stability >100 ppm is sufficient. | Choose REF02CPZ-REEL7 only if legacy REF02 footprint reuse is mandatory and performance trade-offs are acceptable. |
Compared with ADR293ERZ-REEL, ADR293ERZ offers identical electrical performance in a different packaging format, while REF02CPZ-REEL7 sacrifices noise, accuracy, and quiescent current for broader legacy compatibility-making ADR293ERZ-REEL optimal for new ultra-low-power, high-precision designs.
Availability
ADR293ERZ-REEL is available at Aetrix Electronics and suitable for portable instrumentation, solar-powered sensors, and loop-current powered instruments requiring stable component supply, long-term calibration retention, and extended temperature operation.
Supply support for ADR293ERZ-REEL 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.
The ADR293 product line delivers XFET®-based precision voltage references optimized for micropower, low-noise, and wide-temperature industrial and portable instrumentation applications.
FAQ
What is the maximum supply voltage for ADR293ERZ-REEL?
The absolute maximum supply voltage for ADR293ERZ-REEL is 18 V, but operational specification is limited to 6.0 V to 15 V. Exceeding 15 V risks violating line regulation specs (up to 200 ppm/V at +125°C) and may accelerate long-term drift. For reliable 5.0 V reference stability, maintain VIN within 6–15 V per the datasheet's Electrical Specifications table.
Can ADR293ERZ-REEL drive a 5 mA load across its full temperature range?
Yes-ADR293ERZ-REEL is specified to deliver 5 mA continuously from −40°C to +125°C, provided VIN ≥ VOUT + 0.5 V (i.e., ≥5.5 V). Figure 8 in the datasheet confirms ≥0.5 V headroom is maintained up to 5 mA at all temperatures, and load regulation remains ≤200 ppm/mA at +125°C.
Is ADR293ERZ-REEL pin-compatible with REF02 devices?
Yes-ADR293ERZ-REEL is explicitly documented as pin-compatible with REF02 and REF19x families in the Features section. Both use identical 8-lead SOIC_N (R-8) pinout: VIN on Pin 2, GND on Pin 4, VOUT on Pin 6, and NC on remaining pins. No PCB changes are required for drop-in replacement.
What decoupling capacitors are recommended for ADR293ERZ-REEL?
Analog Devices recommends a 0.1 µF ceramic capacitor from VOUT to GND plus a 10 µF tantalum capacitor in parallel. Figure 22 shows this configuration; the ceramic handles high-frequency transients while the tantalum supplies bulk charge during load steps. Avoid electrolytics on VOUT-ESR can destabilize regulation.
Does ADR293ERZ-REEL require a minimum load current to regulate properly?
No-ADR293ERZ-REEL is a series reference and regulates stably with zero load current (IOUT = 0 mA). Its load regulation spec (30 ppm/mA) is defined from 0 to 5 mA, and Figure 10 confirms ΔVOUT remains within ±2 mV across that range. No pull-down resistor is needed.
ADR293ERZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- XFET®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 5 mA
- Tolerance:
- ±0.06%
- Temperature Coefficient:
- 10ppm/°C
- Noise - 0.1Hz to 10Hz:
- 15µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 6V ~ 15V
- Current - Supply:
- 20µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ADR293ERZ-REEL FAQ
1.How can I place an order for ADR293ERZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR293ERZ-REEL 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 ADR293ERZ-REEL reliable?
The price and inventory of ADR293ERZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR293ERZ-REEL is usually 5 days.
3.What payment methods are accepted for ADR293ERZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR293ERZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR293ERZ-REEL?
ADR293ERZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR293ERZ-REEL 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 ADR293ERZ-REEL?
For technical support, including ADR293ERZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR293ERZ-REEL requirements.
6.How does Aetrix verify that ADR293ERZ-REEL is sourced from the original manufacturer or authorized distributors?
All ADR293ERZ-REEL 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 ADR293ERZ-REEL meets industry standards.
7.What is the process for return or replacement of ADR293ERZ-REEL?
All ADR293ERZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADR293ERZ-REEL, 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 ADR293ERZ-REEL part is unused and in its original packaging.
Return procedure for ADR293ERZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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