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Analog Devices Inc. REF195GRU-REEL7
- Part No.:
- REF195GRU-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
REF195GRU-REEL7.pdf
- Description:
- IC VREF SERIES 0.2% 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,445
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Product details
Overview
REF195GRU-REEL7 from Analog Devices is a precision micropower low-dropout voltage reference delivering 5.00 V ±2 mV initial accuracy, 5 ppm/°C max temperature coefficient, and 45 μA max supply current in active mode-designed for high-accuracy ADC/DAC biasing in portable and solar-powered instrumentation.
For engineers reviewing the REF195GRU-REEL7 datasheet, REF195GRU-REEL7 pinout, REF195GRU-REEL7 application, or REF195GRU-REEL7 equivalent, key selection criteria include dropout voltage ≤0.50 V at 10 mA load, sleep-mode current ≤15 μA, and guaranteed operation across −40°C to +85°C with 1 μF output bypass capacitance.
Technical Context
The REF195GRU-REEL7 implements a patented curvature-corrected band gap core with laser-trimmed thin-film resistors to achieve stable 5.00 V output over temperature. Its low-dropout architecture enables regulation from supplies as low as 5.50 V (i.e., 500 mV headroom) at 10 mA load.
Sleep mode is controlled via TTL/CMOS-compatible SLEEP pin (VH ≥ 2.4 V, VL ≤ 0.8 V), reducing quiescent current to ≤15 μA while disabling output. Output short-circuit protection and 1.2 mV/1000 h long-term stability support robust field deployment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Output Voltage | 5.00 V - precisely trimmed for direct interface with 5 V ADC references and analog front-ends |
| Initial Accuracy | ±2 mV at 25°C - ensures ≤0.04% absolute error without system calibration |
| Temp Coefficient | 5 ppm/°C max (−40°C to +85°C) - contributes ≤0.25 mV drift over full industrial range |
| Dropout Voltage | 0.50 V at 10 mA - allows operation from 5.5 V supply, critical for battery-powered systems |
| Supply Current | 45 μA max active / 15 μA max sleep - enables multi-year operation on coin-cell or energy-harvested sources |
| Load Regulation | 4 ppm/mA max - maintains ≤0.02 mV/V change across 0–30 mA load variation |
| Line Regulation | 4 ppm/V max - holds output stable despite input rail fluctuations in noisy power domains |
Pinout & Package
REF195GRU-REEL7 is housed in an 8-lead SOIC_N (RU suffix) package with exposed pad for thermal performance. Pin 1 and Pin 5 are factory test points (no user connection); Pins 6 and 7 are internally unconnected (NC).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (TP) | Factory Zener trim point | No user connection; used for post-package output voltage calibration |
| 2 (VS) | Positive supply input | Accepts 5.10 V to 15 V; minimum 500 mV headroom required for regulation |
| 3 (SLEEP) | Digital enable control | Active-low logic input; drives output to high-Z and reduces IQ to ≤15 μA |
| 4 (GND) | Analog ground reference | Must be connected to clean system ground; Kelvin sense path for stability |
| 5 (TP) | Factory Zener trim point | No user connection; internal trimming node, not functional in circuit |
| 6 (NC) | No connect | Internally floating; must remain unconnected per datasheet |
| 7 (NC) | No connect | Internally floating; must remain unconnected per datasheet |
| 8 (OUTPUT) | Precision 5.00 V output | Requires 1 μF ceramic capacitor to GND for stability and noise reduction |
Key Features
| Feature | Design Value |
|---|---|
| Curvature-corrected band gap | Enables 5 ppm/°C tempco without external compensation components |
| Low-dropout operation | Regulates from 500 mV above output-supports single-cell Li-ion or dual-cell alkaline supplies |
| Integrated sleep mode | Reduces supply current to ≤15 μA without external FET or sequencing logic |
| Laser-trimmed thin-film resistors | Guarantees ±2 mV initial accuracy and <1.2 mV/1000 h long-term stability |
| Short-circuit protected output | Withstands indefinite output-to-ground fault without damage or parameter shift |
Applications
| Portable Instrumentation | High-Resolution Data Acquisition |
|---|---|
|
Use Scenario: Handheld multimeter with 24-bit sigma-delta ADC powered by two AA cells. IC Role / Device Role / Timing Role: Primary 5 V reference for ADC and signal chain biasing. Use Value: 5 ppm/°C tempco and 45 μA quiescent current extend battery life while maintaining ±0.01% measurement accuracy across operating temperature. |
Use Scenario: Industrial process transmitter with isolated 4–20 mA loop and local sensor digitization. IC Role / Device Role / Timing Role: Stable 5.00 V reference for precision DAC generating loop current setpoint. Use Value: ±2 mV initial accuracy and 4 ppm/mA load regulation ensure <0.02% full-scale error in current output, even under varying loop impedance. |
| Solar-Powered Remote Sensors | Loop-Powered Smart Transmitters |
|
Use Scenario: Wireless environmental node harvesting energy from small PV panel with variable output. IC Role / Device Role / Timing Role: Low-quiescent reference enabling wake-up ADC sampling during brief peak-voltage windows. Use Value: 15 μA sleep current and 0.50 V dropout allow reliable 5 V regulation from as low as 5.5 V input-maximizing usable harvest window. |
Use Scenario: Two-wire 4–20 mA transmitter drawing power directly from loop, requiring ultra-low IQ. IC Role / Device Role / Timing Role: Precision 5 V reference for microcontroller ADC and analog conditioning circuitry. Use Value: 45 μA active current and 5 ppm/°C tempco maintain sensor accuracy while staying within strict 3.5 mA loop budget at lowest operating voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR3450ARJZ-R7 | Fixed 5.0 V output; 10 ppm/°C max tempco; 120 μA supply current; SOT-23-5 package | Higher tempco and quiescent current; lacks sleep mode; smaller footprint | Choose when board space is constrained and 10 ppm/°C drift is acceptable |
| MAX6126ASA50+T | 5.0 V output; 3 ppm/°C max tempco; 85 μA supply current; 8-pin SOIC package | Lower tempco but higher IQ; no sleep mode; tighter initial accuracy (±0.5 mV) | Choose when ultimate temperature stability is prioritized over micropower operation |
Compared with ADR3450ARJZ-R7 and MAX6126ASA50+T, REF195GRU-REEL7 uniquely balances ultra-low 45 μA supply current, integrated sleep mode, and 5 ppm/°C tempco in an SOIC package-making it optimal for battery- or energy-harvested systems requiring both precision and longevity.
Availability
REF195GRU-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 REF195GRU-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, serving industrial, automotive, communications, and healthcare markets since 1965.
The REF19x series was developed to address demand for micropower, low-dropout voltage references with laser-trimmed accuracy and extended temperature operation-targeting portable, loop-powered, and energy-constrained precision measurement systems.
FAQ
What is the minimum supply voltage required for REF195GRU-REEL7 to regulate at full 30 mA load?
The REF195GRU-REEL7 requires a minimum supply voltage of 6.30 V to maintain regulation at 30 mA load, based on its 1.30 V dropout specification under that condition. At lighter loads, e.g., 10 mA, regulation is guaranteed down to 5.50 V supply-providing 500 mV headroom over the 5.00 V output. This low-dropout capability supports operation from marginal or aging power sources.
Does REF195GRU-REEL7 require an output capacitor, and if so, what value and type?
Yes, REF195GRU-REEL7 requires a 1 μF ceramic capacitor connected between OUTPUT and GND for stability and noise reduction, as specified in the datasheet. X7R or C0G dielectrics are recommended for minimal capacitance shift over temperature and voltage. Omitting this capacitor may cause oscillation or increased output noise, especially under dynamic load conditions.
How does the SLEEP pin function on REF195GRU-REEL7, and what happens to the output during sleep?
The SLEEP pin on REF195GRU-REEL7 is an active-low TTL/CMOS-compatible control input. When pulled low (≤0.8 V), the device enters sleep mode: output is disabled (high-impedance state), and supply current drops to ≤15 μA. When pulled high (≥2.4 V), normal regulation resumes with ≤45 μA supply current. No external pull-up is required-the pin has internal biasing.
Is REF195GRU-REEL7 qualified for automotive applications, and what temperature range is guaranteed?
REF195GRU-REEL7 is specified over the extended industrial temperature range of −40°C to +85°C, with typical performance validated to +125°C. While not AEC-Q200 qualified, its tested behavior across −40°C to +125°C supports use in under-hood or cabin-located automotive subsystems where full qualification is not mandated-provided system-level validation confirms reliability in target conditions.
What is the long-term stability specification for REF195GRU-REEL7, and how is it measured?
REF195GRU-REEL7 exhibits 1.2 mV maximum long-term stability after 1000 hours of operation at +125°C, as defined in the datasheet. This noncumulative drift metric reflects the worst-case output shift under accelerated stress; subsequent 1000-hour periods show significantly lower drift. It is measured on units preconditioned per JEDEC JESD22-A108, ensuring relevance to real-world 10+ year deployments.
REF195GRU-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Series:
- REF19
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 30 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 25ppm/°C
- Noise - 0.1Hz to 10Hz:
- 50µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 5.1V ~ 15V
- Current - Supply:
- 45µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
REF195GRU-REEL7 FAQ
1.How can I place an order for REF195GRU-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for REF195GRU-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 REF195GRU-REEL7 reliable?
The price and inventory of REF195GRU-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REF195GRU-REEL7 is usually 5 days.
3.What payment methods are accepted for REF195GRU-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REF195GRU-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REF195GRU-REEL7?
REF195GRU-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REF195GRU-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 REF195GRU-REEL7?
For technical support, including REF195GRU-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REF195GRU-REEL7 requirements.
6.How does Aetrix verify that REF195GRU-REEL7 is sourced from the original manufacturer or authorized distributors?
All REF195GRU-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 REF195GRU-REEL7 meets industry standards.
7.What is the process for return or replacement of REF195GRU-REEL7?
All REF195GRU-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with REF195GRU-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 REF195GRU-REEL7 part is unused and in its original packaging.
Return procedure for REF195GRU-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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