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Analog Devices Inc. REF192FS-REEL7
- Part No.:
- REF192FS-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
REF192FS-REEL7.pdf
- Description:
- IC VREF SERIES 0.2% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,375
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Product details
Overview
REF192FS-REEL7 from Analog Devices is a precision micropower low-dropout (LDV) 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. It operates from supplies as low as 100 mV above output voltage and supports 30 mA load current-ideal for portable instrumentation and high-resolution ADC/DAC biasing in battery-constrained systems.
For engineers reviewing the REF192FS-REEL7 datasheet, REF192FS-REEL7 pinout, REF192FS-REEL7 application, or REF192FS-REEL7 equivalent, key selection criteria include dropout voltage at 10 mA (1.00 V), sleep-mode current (≤15 μA), load regulation (4 ppm/mA), and SOIC_N package compatibility with Kelvin-sensing layouts for metrology-grade stability.
Technical Context
The REF192FS-REEL7 uses a patented curvature-corrected band gap core with laser-trimmed thin-film resistors to achieve <5 ppm/°C drift over −40°C to +85°C and maintains 2 ppm/°C typical performance up to +125°C. Its SLEEP pin enables TTL/CMOS-compatible shutdown, reducing quiescent current to ≤15 μA while disabling output.
Designed for low-noise analog signal chains, it specifies 25 μV p-p (0.1 Hz–10 Hz) output noise and includes short-circuit protection. The device requires a 1 μF output-to-GND bypass capacitor for stability and achieves 4 ppm/V line regulation under 3.0–15 V input variation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Output Voltage | 2.50 V - precisely trimmed for 12-bit to 16-bit ADC/DAC reference rails |
| Initial Accuracy | ±2 mV max at 25°C - enables single-point calibration in portable sensor nodes |
| Temp Coefficient | 5 ppm/°C max (−40°C to +85°C) - ensures <±0.3 mV drift across industrial range |
| Dropout Voltage | 1.00 V at 10 mA load - allows operation from 3.5 V supply in 3.3 V system rails |
| Supply Current | 45 μA max - supports >1-year battery life in solar-powered remote sensors |
| Sleep Current | 15 μA max - enables ultra-low-power wake-on-event architectures |
| Noise (0.1–10 Hz) | 25 μV p-p - minimizes quantization error in precision weigh-scale front-ends |
Pinout & Package
REF192FS-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 end-user circuits.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (TP) | Factory Test Point | Zener-zap trim node; no user connection - floating prevents output accuracy shift |
| 2 (VS) | Positive Supply Input | Accepts 2.6 V to 15 V; dropout headroom as low as 100 mV enables ultra-low-voltage operation |
| 3 (SLEEP) | Digital Enable/Disable Control | TTL/CMOS-compatible input; low = output disabled, current ≤15 μA |
| 4 (GND) | Analog Ground Reference | Must be star-connected to minimize ground bounce in mixed-signal PCBs |
| 5 (TP) | Factory Test Point | Internal trimming node; open-circuit required for specified accuracy and stability |
| 6 (NC) | No Connect | Internally unused; leave unconnected per datasheet guidance |
| 7 (NC) | No Connect | Internally unused; leave unconnected per datasheet guidance |
| 8 (OUTPUT) | Precision Voltage Output | 2.50 V source/sink capable of 30 mA; requires 1 μF ceramic bypass to GND |
Key Features
| Feature | Design Value |
|---|---|
| Curvature-Corrected Band Gap Core | Enables 5 ppm/°C max TCVO without external compensation components |
| Laser-Trimmed Thin-Film Resistors | Guarantees ±2 mV initial accuracy without post-assembly calibration |
| Low-Dropout Operation (100 mV headroom) | Supports direct use from single-cell Li-ion (3.0–3.6 V) or coin-cell sources |
| Sleep Mode with Digital Control | Reduces system standby power by >65% versus always-on references |
| Short-Circuit Protected Output | Withstands indefinite output-to-ground faults without latch-up or degradation |
Applications
| Portable Instrumentation | High-Resolution Data Acquisition |
|---|---|
|
Use Scenario: Handheld multimeters and portable gas analyzers requiring stable reference under varying battery voltage and ambient temperature. IC Role / Device Role / Timing Role: Primary voltage reference for 16-bit SAR ADCs and precision DACs driving display drivers and sensor excitation circuits. Use Value: 5 ppm/°C tempco and 1.00 V dropout ensure full-scale accuracy remains within ±0.01% across 0–40°C operating range without recalibration. |
Use Scenario: Industrial data loggers acquiring thermocouple, RTD, and strain-gauge signals with 24-bit ΣΔ ADCs. IC Role / Device Role / Timing Role: Low-noise (25 μV p-p), low-drift reference for ADC reference input and programmable gain amplifier biasing. Use Value: 4 ppm/mA load regulation and Kelvin-sense-capable pinout prevent measurement errors from trace resistance in remote sensor interfaces. |
| Solar-Powered Remote Sensors | Loop-Powered 4–20 mA Transmitters |
|
Use Scenario: Wireless environmental monitors powered by small photovoltaic cells with highly variable output voltage (2.8–4.2 V). IC Role / Device Role / Timing Role: Micropower (45 μA) reference enabling continuous sensor biasing during daylight harvesting and low-power sleep at night. Use Value: 15 μA sleep current extends usable runtime between illumination cycles; 100 mV dropout allows operation even at end-of-day panel voltage sag. |
Use Scenario: Two-wire 4–20 mA field transmitters where loop power budget is fixed at 3.5–4.0 V and reference must not compromise compliance voltage. IC Role / Device Role / Timing Role: Precision 2.50 V reference for current-loop DAC and sensor signal conditioning, sharing same supply rail as output driver. Use Value: 1.00 V dropout at 10 mA leaves ≥1.5 V headroom for op-amp output swing and transistor saturation in 4 mA start-up condition. |
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, 3 ppm/°C max TC, 4 μA supply current, no sleep mode, SOT-23-5 package | Better tempco and lower IQ but lacks digital enable and higher output drive (10 mA only) | Prefer for space-constrained, always-on ultra-low-power nodes where 30 mA load is unnecessary |
| MAX6126AASA+T | 2.5 V, 3 ppm/°C max TC, 120 μA supply current, no sleep mode, SOIC-8 package | Higher drive (20 mA), better long-term stability (75 ppm/1000h), but no shutdown control | Prefer when highest aging stability is critical and system-level power gating replaces device-level sleep |
Compared with REF192FS-REEL7, ADR3425ARJZ-R7 trades sleep functionality and 30 mA drive for superior tempco and nanoamp quiescent current in a smaller footprint, while MAX6126AASA+T offers enhanced long-term drift performance at the cost of higher static power and no digital disable capability.
Availability
REF192FS-REEL7 is available at Aetrix Electronics and suitable for portable instrumentation, high-resolution data acquisition, and solar-powered remote sensors requiring stable component supply with guaranteed long-term parametric continuity.
Supply support for REF192FS-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 design and manufacturing operations worldwide.
The REF19x series was developed specifically for micropower, low-dropout precision voltage referencing in battery-operated and energy-harvesting systems where thermal stability, supply headroom, and sleep-mode efficiency are critical.
FAQ
What is the maximum load current supported by REF192FS-REEL7?
The REF192FS-REEL7 delivers up to 30 mA of output current while maintaining specified accuracy and regulation. At 10 mA load, its dropout voltage is 1.00 V; at 30 mA, it rises to 1.40 V. This capability supports direct driving of ADC reference inputs, op-amp bias networks, and low-power microcontroller VREF pins without external buffers.
Does REF192FS-REEL7 require an output bypass capacitor?
Yes - a minimum 1 μF ceramic capacitor must be placed between the OUTPUT and GND pins of REF192FS-REEL7 for stability and optimal noise performance. This capacitor reduces high-frequency output impedance and suppresses supply-induced ripple, directly improving ADC effective resolution and long-term output voltage stability.
How does the SLEEP pin function on REF192FS-REEL7?
The SLEEP pin on REF192FS-REEL7 is a TTL/CMOS-compatible digital input: logic low (≤0.8 V) disables the output and reduces supply current to ≤15 μA; logic high (≥2.4 V) enables normal operation with ≤45 μA supply current. No external pull-up is required, and the pin draws ≤8 μA in either state.
What is the temperature coefficient specification for REF192FS-REEL7 over −40°C to +85°C?
The REF192FS-REEL7 has a maximum temperature coefficient of 5 ppm/°C over the extended industrial range of −40°C to +85°C. This translates to a worst-case output drift of ±0.3 mV across the full range - verified per Table 6 in the Rev. L datasheet and applicable to all E-grade units in SOIC_N packaging.
Is REF192FS-REEL7 pin-compatible with other REF19x variants?
Yes - all REF19x series devices, including REF192FS-REEL7, share identical 8-lead SOIC_N (S suffix) pinouts and electrical interface behavior. Only the nominal output voltage differs (2.50 V for REF192); all timing, sleep control, supply, and grounding functions are functionally and physically interchangeable across the family.
REF192FS-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:
- ±0.2%
- Temperature Coefficient:
- 10ppm/°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
REF192FS-REEL7 FAQ
1.How can I place an order for REF192FS-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for REF192FS-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 REF192FS-REEL7 reliable?
The price and inventory of REF192FS-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REF192FS-REEL7 is usually 5 days.
3.What payment methods are accepted for REF192FS-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REF192FS-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REF192FS-REEL7?
REF192FS-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REF192FS-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 REF192FS-REEL7?
For technical support, including REF192FS-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REF192FS-REEL7 requirements.
6.How does Aetrix verify that REF192FS-REEL7 is sourced from the original manufacturer or authorized distributors?
All REF192FS-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 REF192FS-REEL7 meets industry standards.
7.What is the process for return or replacement of REF192FS-REEL7?
All REF192FS-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with REF192FS-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 REF192FS-REEL7 part is unused and in its original packaging.
Return procedure for REF192FS-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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