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Analog Devices Inc. REF192ES-REEL7
- Part No.:
- REF192ES-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
REF192ES-REEL7.pdf
- Description:
- IC VREF SERIES 0.08% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,943
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Product details
Overview
REF192ES-REEL7 from Analog Devices is a precision micropower low-dropout voltage reference IC delivering a stable 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-REEL7 datasheet, REF192ES-REEL7 pinout, REF192ES-REEL7 application, or REF192ES-REEL7 equivalent, key selection criteria include dropout voltage (1.00 V at 10 mA load), sleep-mode current (≤15 μA), and extended industrial temperature operation (−40°C to +85°C) with typical performance to +125°C.
Technical Context
The REF192ES-REEL7 employs a patented curvature-corrected band gap core with laser-trimmed thin-film resistors to achieve low drift and high initial accuracy. Its architecture integrates a dedicated SLEEP pin enabling TTL/CMOS-compatible shutdown with output disable and current reduction to ≤15 μA.
It operates as a two-terminal shunt-like series reference: input (VS) supplies current through an internal pass element, while OUTPUT delivers regulated voltage referenced to GND. Dropout is defined as VS − VO and remains ≤1.50 V across full load (0–25 mA) and temperature (−40°C to +85°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Output Voltage | 2.50 V - precisely trimmed for use with 12-bit to 16-bit ADCs requiring stable reference without external calibration. |
| Initial Accuracy | ±2 mV maximum at 25°C - ensures ≤0.08% full-scale error before temperature or load effects. |
| Temperature Coefficient | 5 ppm/°C maximum (E grade) - limits drift to ≤1.25 mV over −40°C to +85°C span. |
| Supply Current | 45 μA maximum - enables multi-year battery life in portable sensors and loop-powered transmitters. |
| Sleep Mode Current | 15 μA maximum - supports ultra-low-power wake-up architectures with fast recovery (<10 μs). |
| Dropout Voltage | 1.00 V at 10 mA load - allows regulation from supplies as low as 3.5 V, critical for single-cell Li-ion or dual-AA systems. |
| Load Regulation | 4 ppm/mA maximum - contributes ≤0.1 mV error over 0–30 mA load variation, supporting dynamic current sinks. |
Pinout & Package
REF192ES-REEL7 is housed in an 8-lead SOIC_N (SOIC-8 narrow-body) package, compatible with standard surface-mount assembly and reflow profiles. Pin 1 and Pin 5 are factory test points (TP) and must remain unconnected in circuit design.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (TP) | Factory Test Point | Zener-zap trimming node; no user connection - floating or tied to GND causes calibration loss. |
| 2 (VS) | Positive Supply Input | Accepts 3.5 V to 15 V input; dropout headroom of ≥1.00 V required for 10 mA load. |
| 3 (SLEEP) | Digital Control Input | TTL/CMOS-compatible enable: low = output off & current ≤15 μA; high = active regulation. |
| 4 (GND) | Analog Ground Reference | Return path for output current and internal bias; requires low-impedance Kelvin connection to OUTPUT bypass capacitor. |
| 5 (TP) | Factory Test Point | Same as Pin 1 - reserved for post-package trimming; must be left unconnected. |
| 6 (NC) | No Connect | Internally unused; electrically isolated - may be left floating or tied to GND per layout best practice. |
| 7 (NC) | No Connect | Internally unused; electrically isolated - no functional impact if grounded or floated. |
| 8 (OUTPUT) | Regulated Voltage Output | Delivers 2.50 V ±2 mV; requires 1 μF ceramic capacitor to GND for stability and noise suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Curvature-Corrected Band Gap Core | Enables 5 ppm/°C max TCVO via on-chip temperature compensation - eliminates need for external thermistors or calibration. |
| Laser-Trimmed Thin-Film Resistors | Guarantees ±2 mV initial accuracy without post-assembly trimming - reduces manufacturing test time and cost. |
| Low-Dropout Operation (1.00 V @ 10 mA) | Supports direct regulation from 3.5 V supplies - avoids need for boost converters in energy-constrained sensor nodes. |
| Sleep Mode with Output Disable | Reduces quiescent current to ≤15 μA while disabling OUTPUT - prevents loading of downstream circuits during standby. |
| Short-Circuit Protected Output | Withstands indefinite output-to-GND shorts without damage or parameter shift - improves system robustness in field-deployed instruments. |
Applications
| Portable Instrumentation | High-Resolution Data Acquisition |
|---|---|
Use Scenario: Handheld multimeters and battery-operated environmental loggers requiring multi-year operation on AA cells. IC Role / Device Role / Timing Role: Primary voltage reference for 16-bit SAR ADCs and precision analog front-ends. Use Value: 45 μA supply current and 1.00 V dropout extend usable battery voltage range down to 3.5 V, delaying replacement cycles. |
Use Scenario: Industrial PLC analog input modules digitizing 4–20 mA loop signals with <0.1% total unadjusted error. IC Role / Device Role / Timing Role: Stable excitation source for ratiometric sensor bridges and reference for dual-slope or sigma-delta ADCs. Use Value: 5 ppm/°C TCVO and ±2 mV accuracy ensure reference-induced error stays below 0.02% FS over full operating temperature. |
| Solar-Powered Remote Sensors | Loop-Powered Transmitters |
Use Scenario: Wireless soil moisture and temperature nodes powered by small photovoltaic panels with highly variable output voltage. IC Role / Device Role / Timing Role: Low-voltage reference enabling accurate sensor biasing and ADC conversion under micro-power constraints. Use Value: Sleep mode (≤15 μA) synchronizes with RF transmission bursts, cutting average current to sub-μA levels between readings. |
Use Scenario: Two-wire 4–20 mA field transmitters where all circuitry must operate within 3.5–4.0 mA loop current budget. IC Role / Device Role / Timing Role: Precision reference for current-loop DAC and sensor signal conditioning, sharing same supply rail. Use Value: 45 μA quiescent current leaves >3.4 mA available for signal processing and output stage - meeting strict loop compliance. |
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 TC, 45 μA supply current, but no SLEEP pin or dropout spec below 1.2 V. | Lacks active shutdown - unsuitable for duty-cycled systems requiring deep sleep current <20 μA. | Select REF192ES-REEL7 when sleep-mode current ≤15 μA and dropout <1.1 V are mandatory. |
| MAX6126AASA25+ | 2.5 V output, 3 ppm/°C max TC, 120 μA supply current, 8-pin SOIC, no sleep function. | Higher quiescent current limits use in multi-year battery applications; no digital enable/disable control. | Choose REF192ES-REEL7 for micropower designs needing programmable output disable and <50 μA active current. |
Compared with ADR3425ARJZ-R7 and MAX6126AASA25+, REF192ES-REEL7 uniquely combines sub-15 μA sleep current, 1.00 V dropout at 10 mA, and integrated SLEEP control - making it optimal for intermittent-operation, energy-harvesting, and loop-powered systems where both ultra-low standby power and minimal input headroom are critical.
Availability
REF192ES-REEL7 is available at Aetrix Electronics and suitable for portable instrumentation, high-resolution data acquisition, and solar-powered remote sensing requiring stable component supply and long-term parametric consistency.
Supply support for REF192ES-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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with R&D and manufacturing facilities worldwide.
The REF19x series was engineered specifically for micropower, low-dropout precision reference needs in portable, loop-powered, and automotive-qualified instrumentation - emphasizing accuracy retention across wide temperature and supply ranges.
FAQ
What is the maximum load current supported by REF192ES-REEL7?
The REF192ES-REEL7 supports up to 30 mA of continuous output current at 25°C, with guaranteed operation to 25 mA across the full −40°C to +85°C industrial temperature range. Load regulation is specified at 4 ppm/mA (E grade), meaning output voltage changes by ≤0.1 mV per 10 mA load step under nominal conditions. Exceeding 25 mA at elevated temperatures may degrade accuracy or trigger thermal shutdown.
Does REF192ES-REEL7 require an output bypass capacitor, and what value is recommended?
Yes, REF192ES-REEL7 requires a minimum 1 μF ceramic capacitor connected directly between the OUTPUT and GND pins. This capacitor stabilizes the reference, suppresses low-frequency noise (0.1 Hz to 10 Hz), and ensures proper transient response. X7R or C0G dielectrics are preferred; placement must minimize trace inductance using Kelvin grounding to maintain 25 μV p-p noise performance.
How does the SLEEP pin function on REF192ES-REEL7, and what logic levels activate it?
The SLEEP pin on REF192ES-REEL7 is an active-low digital control input. A logic low (≤0.8 V) disables the output and reduces supply current to ≤15 μA; a logic high (≥2.4 V) enables normal regulation. Input leakage is ≤−8 μA in both states. No pull-up or pull-down resistor is required, but clean CMOS/TTL drive is essential to avoid partial enable states that increase current unpredictably.
What is the dropout voltage specification for REF192ES-REEL7, and how does it vary with load?
REF192ES-REEL7 has a dropout voltage of 1.00 V at 10 mA load (VS = 3.5 V), and 1.40 V at 30 mA load (VS = 3.9 V), both tested at 25°C. Over −40°C to +85°C, dropout increases to 1.50 V at 25 mA. This low dropout enables operation from supplies as low as 3.5 V - critical for single-cell Li-ion or dual-AA battery systems where headroom is constrained.
Is REF192ES-REEL7 qualified for automotive applications, and what temperature range is guaranteed?
REF192ES-REEL7 is specified over the extended industrial temperature range of −40°C to +85°C. While its typical performance extends to +125°C (e.g., 5 ppm/°C TCVO and 10 ppm/V line regulation hold), it is not AEC-Q200 qualified. For automotive under-hood use, designers should verify long-term reliability at +125°C per application-specific stress testing, as only the −40°C to +85°C range is fully production-tested and guaranteed.
REF192ES-REEL7 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-REEL7 FAQ
1.How can I place an order for REF192ES-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for REF192ES-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 REF192ES-REEL7 reliable?
The price and inventory of REF192ES-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REF192ES-REEL7 is usually 5 days.
3.What payment methods are accepted for REF192ES-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REF192ES-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REF192ES-REEL7?
REF192ES-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REF192ES-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 REF192ES-REEL7?
For technical support, including REF192ES-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REF192ES-REEL7 requirements.
6.How does Aetrix verify that REF192ES-REEL7 is sourced from the original manufacturer or authorized distributors?
All REF192ES-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 REF192ES-REEL7 meets industry standards.
7.What is the process for return or replacement of REF192ES-REEL7?
All REF192ES-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with REF192ES-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 REF192ES-REEL7 part is unused and in its original packaging.
Return procedure for REF192ES-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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