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Analog Devices Inc. REF192ES-REEL
- Part No.:
- REF192ES-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
REF192ES-REEL.pdf
- Description:
- IC VREF SERIES 0.08% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,291
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Product details
Overview
REF192ES-REEL from Analog Devices is a precision micropower low-dropout voltage reference IC delivering 2.50 V output with ±2 mV initial accuracy, 5 ppm/°C max temperature coefficient, and 45 μA max supply current-designed for high-accuracy ADC/DAC biasing in portable and solar-powered instrumentation.
For engineers reviewing the REF192ES-REEL datasheet, REF192ES-REEL pinout, REF192ES-REEL application, or REF192ES-REEL equivalent, key selection criteria include dropout voltage (1.00 V @ 10 mA), sleep-mode current (15 μA), load regulation (4 ppm/mA), and extended industrial temperature operation (−40°C to +85°C).
Technical Context
The REF192ES-REEL implements a patented curvature-corrected band gap core with laser-trimmed thin-film resistors to achieve stable 2.50 V output across temperature and load. Its low-dropout architecture enables operation with only 100 mV headroom above output voltage.
Sleep mode is controlled via TTL/CMOS-compatible SLEEP pin (VH ≥ 2.4 V, VL ≤ 0.8 V), reducing supply current to ≤15 μA while disabling output-critical for battery-cycled sensor nodes and loop-powered transmitters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Output Voltage | 2.50 V - precisely trimmed reference for 12-bit to 16-bit data converters requiring stable mid-supply bias. |
| Initial Accuracy | ±2 mV maximum at 25°C - ensures <0.08% full-scale error before calibration in precision measurement front-ends. |
| Temp Coefficient | 5 ppm/°C max (−40°C to +85°C) - contributes ≤125 μV drift over full industrial range, enabling uncalibrated operation in field instruments. |
| Dropout Voltage | 1.00 V @ ILOAD = 10 mA - supports operation from 3.5 V supplies, compatible with single-cell Li-ion or dual-cell alkaline systems. |
| Supply Current | 45 μA max (active), 15 μA max (sleep) - extends battery life to years in wake-sleep sensor nodes with infrequent sampling. |
| Noise (0.1–10 Hz) | 25 μV p-p - low enough to avoid degrading ENOB in 16-bit SAR ADCs without additional filtering. |
| Load Regulation | 4 ppm/mA - maintains output stability under dynamic load changes typical in multiplexed analog input stages. |
Pinout & Package
REF192ES-REEL is housed in an 8-lead SOIC_N (SOIC-8 narrow-body) package, pin-compatible with industry-standard SOIC-8 footprints and reflow-process compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (TP) | Factory Test Point | Zener-zap trim node; must remain unconnected in circuit-no user access or routing permitted. |
| 2 (VS) | Positive Supply Input | Accepts 3.5 V to 15 V; requires ≥1 μF ceramic bypass capacitor to GND for stability and noise reduction. |
| 3 (SLEEP) | Digital Sleep Control | TTL/CMOS-compatible input; logic low disables output and reduces current to ≤15 μA. |
| 4 (GND) | Analog Ground Reference | Primary return path for reference output and internal bias; must be tied to clean system ground plane. |
| 5 (TP) | Factory Test Point | Second Zener-zap node; electrically isolated during operation-leave floating and unconnected. |
| 6 (NC) | No Connect | Internally unused; no bond wire or circuit connection-must remain unconnected. |
| 7 (NC) | No Connect | Internally unused; no bond wire or circuit connection-must remain unconnected. |
| 8 (OUTPUT) | Precision Reference Output | Delivers regulated 2.50 V; requires 1 μF capacitor to GND per datasheet for transient stability and noise suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Curvature-Corrected Band Gap Core | Enables 5 ppm/°C tempco without external compensation-reduces design complexity in wide-temperature industrial sensors. |
| Low-Dropout Operation (1.00 V @ 10 mA) | Permits use with 3.5 V supplies, supporting compact battery-powered designs where headroom is constrained. |
| Sleep Mode with Digital Control | Reduces quiescent current to ≤15 μA on demand-enables microamp-level system sleep states in portable instrumentation. |
| Laser-Trimmed Thin-Film Resistors | Guarantees ±2 mV initial accuracy without post-assembly calibration-lowers test cost and improves yield in volume production. |
| Short-Circuit Protected Output | Withstands indefinite output short to GND or VS without damage-enhances robustness in field-deployed equipment with exposed connectors. |
Applications
| Portable Instrumentation | High-Resolution Data Acquisition |
|---|---|
|
Use Scenario: Handheld multimeters and portable gas analyzers operating from single Li-ion cells (3.0–4.2 V). IC Role / Device Role / Timing Role: Provides stable 2.50 V reference for 16-bit sigma-delta ADCs and precision DACs used in analog front-end signal conditioning. Use Value: Low dropout (1.00 V) enables full-range operation down to 3.5 V supply; 45 μA supply current extends battery life beyond 500 hours per charge. |
Use Scenario: Modular DAQ systems with multiplexed analog inputs and programmable gain instrumentation amplifiers. IC Role / Device Role / Timing Role: Serves as master reference for simultaneous sampling ADCs and calibration DACs in multi-channel acquisition cards. Use Value: 4 ppm/mA load regulation prevents crosstalk-induced offset shifts when channels switch; 25 μV p-p noise preserves >15.5 ENOB. |
| Smart Sensor Transmitters | Solar-Powered Remote Monitoring |
|
Use Scenario: 4–20 mA loop-powered pressure and temperature transmitters with HART digital overlay. IC Role / Device Role / Timing Role: Supplies excitation and reference voltage for bridge sensors and ADCs within tight 3.5–36 V loop compliance limits. Use Value: Sleep mode (≤15 μA) allows microcontroller-initiated self-test and diagnostics without violating loop current budget. |
Use Scenario: Wireless environmental sensors powered by small photovoltaic panels and supercapacitor energy storage. IC Role / Device Role / Timing Role: Delivers stable 2.50 V reference for ultra-low-power microcontrollers and RF transceivers during intermittent solar charging cycles. Use Value: Operates reliably at 3.5 V input (1.00 V dropout), matching peak PV panel voltage under partial shading; 5 ppm/°C tempco avoids thermal recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR3425ARJZ-R7 | 2.5 V output, 3 ppm/°C max tempco, 4.5 μA supply current, no sleep pin, SOT-23-5 package. | Lower power but lacks digital enable; unsuitable for wake-sleep architectures requiring output disable. | Select when minimal quiescent current dominates over controllable shutdown and SOIC-8 layout compatibility. |
| MAX6126AASA+T | 2.5 V output, 3 ppm/°C max tempco, 120 μA supply current, no sleep mode, SOIC-8 package. | Higher drive capability (20 mA) but higher current draw; no sleep control limits battery lifetime in cyclic sensing. | Select when higher output current is required and sleep functionality is not needed-e.g., always-on industrial controllers. |
Compared with ADR3425ARJZ-R7 and MAX6126AASA+T, REF192ES-REEL uniquely balances SOIC-8 compatibility, 15 μA sleep current, and 1.00 V dropout-making it optimal for space-constrained, battery-gated instrumentation where both precision and ultra-low standby power are mandatory.
Availability
REF192ES-REEL is available at Aetrix Electronics and suitable for portable instrumentation, high-resolution data acquisition, and solar-powered remote monitoring requiring stable component supply, long-lifecycle availability, and traceable sourcing.
Supply support for REF192ES-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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with design and manufacturing expertise spanning over 50 years.
The REF19x series was developed specifically for micropower, low-dropout precision reference needs in portable, loop-powered, and automotive-qualified instrumentation-emphasizing stability, accuracy, and supply flexibility over wide temperature ranges.
FAQ
What is the maximum load current supported by the REF192ES-REEL?
The REF192ES-REEL delivers up to 30 mA of output current at 25°C, with guaranteed performance to 25 mA across −40°C to +85°C. At 30 mA, dropout voltage rises to 1.40 V (VS = 3.9 V), and load regulation remains within 10 ppm/mA-making it suitable for driving ADC references, op-amp bias networks, and small DAC loads without external buffering.
Does the REF192ES-REEL require an output capacitor, and if so, what value and type?
Yes, the REF192ES-REEL requires a minimum 1 μF ceramic capacitor between OUTPUT and GND for stability and noise suppression, as specified in the datasheet. X7R or C0G dielectrics are recommended; tantalum or aluminum electrolytics are not advised due to ESR and aging effects that may degrade transient response and long-term accuracy.
How does the SLEEP pin function on the REF192ES-REEL, and what are its voltage thresholds?
The SLEEP pin on the REF192ES-REEL is a TTL/CMOS-compatible digital control input: logic low (≤0.8 V) disables the output and reduces supply current to ≤15 μA; logic high (≥2.4 V) enables normal operation. Input leakage is ≤8 μA magnitude in either state, allowing direct interfacing with most microcontrollers without level-shifting or pull-up resistors.
Is the REF192ES-REEL qualified for automotive applications?
The REF192ES-REEL is specified over the extended industrial temperature range (−40°C to +85°C) with typical performance validated to +125°C, and Analog Devices documents its suitability for automotive subsystems such as body electronics and sensor interfaces-though it is not AEC-Q100 qualified. For full automotive qualification, consult the manufacturer's automotive-grade variants or application support.
What is the long-term stability specification for the REF192ES-REEL, and how is it measured?
The REF192ES-REEL exhibits 1.2 mV maximum long-term stability after 1000 hours of operation at +125°C, as defined in the datasheet. This noncumulative drift reflects the first 1000-hour period only; subsequent periods show significantly lower drift. The specification ensures predictable aging behavior in mission-critical instrumentation deployed for >10-year service life.
REF192ES-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- REF19
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 30 mA
- Tolerance:
- ±0.08%
- Temperature Coefficient:
- 5ppm/°C
- Noise - 0.1Hz to 10Hz:
- 25µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 3V ~ 15V
- Current - Supply:
- 45µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
REF192ES-REEL FAQ
1.How can I place an order for REF192ES-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for REF192ES-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 REF192ES-REEL reliable?
The price and inventory of REF192ES-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REF192ES-REEL is usually 5 days.
3.What payment methods are accepted for REF192ES-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REF192ES-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REF192ES-REEL?
REF192ES-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REF192ES-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 REF192ES-REEL?
For technical support, including REF192ES-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REF192ES-REEL requirements.
6.How does Aetrix verify that REF192ES-REEL is sourced from the original manufacturer or authorized distributors?
All REF192ES-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 REF192ES-REEL meets industry standards.
7.What is the process for return or replacement of REF192ES-REEL?
All REF192ES-REEL units undergo pre-shipment inspection (PSI). If there is an issue with REF192ES-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 REF192ES-REEL part is unused and in its original packaging.
Return procedure for REF192ES-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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