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Analog Devices Inc. REF195GS-REEL7
- Part No.:
- REF195GS-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
REF195GS-REEL7.pdf
- Description:
- IC VREF SERIES 0.2% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,734
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Product details
Overview
REF195GS-REEL7 from Analog Devices is a precision micropower low-dropout (LDV) voltage reference IC delivering a stable 5.00 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 REF195GS-REEL7 datasheet, REF195GS-REEL7 pinout, REF195GS-REEL7 application, or REF195GS-REEL7 equivalent, key selection criteria include dropout voltage ≤0.50 V at 10 mA load, sleep-mode current ≤15 μA, and guaranteed operation from −40°C to +85°C with extended performance to +125°C.
Technical Context
The REF195GS-REEL7 employs a patented curvature-corrected band gap core with laser-trimmed thin-film resistors to achieve ultra-low drift and high initial accuracy. Its LDV architecture enables regulation from supplies as low as 100 mV above the 5.00 V output, supporting battery-constrained systems.
Sleep mode is controlled via a dedicated TTL/CMOS-compatible SLEEP pin (VIH = 2.4 V, VIL = 0.8 V), reducing quiescent current to ≤15 μA while disabling output-critical for intermittent-sampling sensor nodes and loop-powered transmitters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Output Voltage | 5.00 V - precisely trimmed for direct interface with 5 V ADCs, DACs, and analog front-ends without scaling. |
| Initial Accuracy | ±2 mV max at 25°C - ensures <0.04% full-scale error before calibration in 12-bit+ data converters. |
| Temp Coefficient | 5 ppm/°C max (−40°C to +85°C) - contributes ≤0.25 mV drift over industrial range, enabling stable metrology-grade references. |
| Dropout Voltage | 0.50 V max at 10 mA load - allows operation from 5.5 V supply, compatible with single-cell Li-ion or regulated 5.5 V rails. |
| Supply Current | 45 μA max (active), 15 μA max (sleep) - supports multi-year battery life in wireless sensor nodes with duty-cycled measurement. |
| Load Regulation | 4 ppm/mA max - maintains output stability across 0–30 mA loads, suitable for driving ADC reference inputs and op-amp bias networks. |
| Noise (0.1–10 Hz) | 50 μV p-p - low enough to avoid degrading ENOB in 16-bit SAR ADCs when used as reference source. |
Pinout & Package
REF195GS-REEL7 is housed in an 8-lead SOIC_N (SOIC-8) package (S suffix), with exposed pad not electrically connected. Pin 1 and Pin 5 are factory test points (TP) reserved for Zener-zap trimming and must remain unconnected in circuit.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (TP) | Factory Test Point | Internally connected to Zener trim network; no user connection permitted-floating in application. |
| 2 (VS) | Positive Supply Input | Accepts 5.10 V to 15 V input; dropout as low as 0.50 V enables efficient use of marginal supply headroom. |
| 3 (SLEEP) | Digital Sleep Control | TTL/CMOS-compatible input; logic low disables output and reduces current to ≤15 μA for power gating. |
| 4 (GND) | Analog Ground Reference | Primary return path for reference output and internal circuitry; requires low-impedance Kelvin connection to system ground. |
| 5 (TP) | Factory Test Point | Second Zener trim node; electrically isolated from signal paths-must be left unconnected. |
| 6 (NC) | No Connect | Internally unused; no bond wire or circuit connection-leave floating per datasheet. |
| 7 (NC) | No Connect | Internally unused; no bond wire or circuit connection-leave floating per datasheet. |
| 8 (OUTPUT) | Precision Voltage Output | Delivers regulated 5.00 V; requires 1 μF ceramic bypass capacitor to GND for stability and noise reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Curvature-Corrected Band Gap Core | Enables 5 ppm/°C max tempco by compensating second-order thermal drift-no external compensation required. |
| Laser-Trimmed Thin-Film Resistors | Guarantees ±2 mV initial accuracy without post-package calibration, reducing test time and BOM cost. |
| Low-Dropout Operation (0.50 V @ 10 mA) | Supports direct regulation from 5.5 V supplies-eliminates need for pre-regulation in 5 V systems powered by USB or LDOs. |
| Active Sleep Mode (≤15 μA) | Reduces average power in duty-cycled systems (e.g., sensor wake-up every 10 s) by >65% versus continuous operation. |
| Short-Circuit Protected Output | Withstands indefinite output short to GND without damage or parameter shift-enhances field reliability in harsh environments. |
Applications
| Portable Instrumentation | High-Resolution Data Acquisition |
|---|---|
|
Use Scenario: Handheld multimeters and portable gas analyzers operating on two AA cells (2.4–3.2 V) with boost converter to 5.5 V rail. IC Role / Device Role / Timing Role: Primary 5.00 V reference for 16-bit sigma-delta ADC measuring sensor bridge outputs. Use Value: 5 ppm/°C tempco and 50 μV p-p noise ensure <0.01% measurement repeatability across 0–50°C ambient without recalibration. |
Use Scenario: Industrial PLC analog input module digitizing 4–20 mA loop signals with 24-bit ADC. IC Role / Device Role / Timing Role: Stable 5.00 V reference for ADC reference buffer and precision op-amp biasing. Use Value: 4 ppm/mA load regulation prevents gain error when reference drives multiple channel buffers simultaneously. |
| Solar-Powered Remote Sensors | Loop-Powered Transmitters |
|
Use Scenario: Wireless soil moisture node powered by small solar panel + supercapacitor, waking hourly for measurement. IC Role / Device Role / Timing Role: Reference source enabled only during ADC conversion; SLEEP pin controlled by microcontroller GPIO. Use Value: 15 μA sleep current extends supercapacitor hold-up time from 8 to >36 hours between solar charges. |
Use Scenario: 2-wire 4–20 mA transmitter where all circuitry must draw ≤4 mA from loop to maintain minimum current. IC Role / Device Role / Timing Role: Low-power 5.00 V reference for sensor excitation and signal conditioning within tight current budget. Use Value: 45 μA active supply current leaves ample margin (<3.95 mA) for microcontroller, sensor, and output stage. |
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 5.00 V output; 10 ppm/°C max tempco; 6 μA typical supply current; SOT-23-5 package. | Lower power but higher drift; lacks sleep mode and short-circuit protection. | Preferred for ultra-low-power, space-constrained designs where 10 ppm/°C drift is acceptable. |
| MAX6126AASA50+ | 5.00 V output; 3 ppm/°C max tempco; 95 μA supply current; SO-8 package; no sleep mode. | Superior tempco and long-term stability, but higher quiescent current and no power-gating capability. | Chosen when ultimate accuracy and stability outweigh power savings and sleep functionality. |
Compared with ADR3450ARJZ-R7, REF195GS-REEL7 offers tighter tempco and integrated sleep control; compared with MAX6126AASA50+, it delivers 3× lower active current and fault resilience at the cost of slightly higher drift-making it optimal for battery- or loop-powered systems demanding balanced accuracy and efficiency.
Availability
REF195GS-REEL7 is available at Aetrix Electronics and suitable for portable instrumentation, high-resolution data acquisition, and solar-powered remote sensing requiring stable component supply with consistent parametric performance across production lots.
Supply support for REF195GS-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 engineered specifically for micropower, low-dropout precision reference needs in battery-operated and energy-harvesting systems-emphasizing ultra-low current, wide temperature operation, and robust output protection.
FAQ
What is the maximum allowable supply voltage for REF195GS-REEL7?
The absolute maximum rating for VS is 15 V, as specified in the Absolute Maximum Ratings table. Continuous operation above this voltage risks permanent damage. For reliable long-term performance, Analog Devices recommends limiting VS to ≤15 V under all conditions-including transient spikes-and using appropriate input filtering or clamping if the supply source is unregulated.
Does REF195GS-REEL7 require an output capacitor, and what value is recommended?
Yes, REF195GS-REEL7 requires a 1 μF ceramic capacitor connected directly between the OUTPUT and GND pins. This capacitor is mandatory for stability and noise suppression, as stated in the General Description and Electrical Characteristics footnotes. X7R or C0G dielectrics are preferred; placement must minimize trace inductance with short, wide connections to both pins.
Can REF195GS-REEL7 drive a 30 mA load continuously?
Yes, REF195GS-REEL7 is rated for continuous 30 mA output current per the General Description and Electrical Characteristics tables. However, at full load and elevated ambient temperatures, thermal considerations apply: the SOIC-8 package has θJA = 150°C/W, so power dissipation (e.g., 0.50 V × 30 mA = 15 mW) must be evaluated against junction temperature limits. Derating is advised above 85°C ambient.
What happens to the output voltage during sleep mode activation?
When a logic low is applied to the SLEEP pin of REF195GS-REEL7, the output is actively disabled and pulled to near-GND potential (typically <100 mV), not high-impedance. This ensures downstream circuitry is fully de-energized. The device draws ≤15 μA total supply current in this state, and output resumes within microseconds after SLEEP returns high.
Is REF195GS-REEL7 qualified for automotive applications?
REF195GS-REEL7 is specified over the extended industrial temperature range (−40°C to +85°C) with typical performance validated to +125°C, and its design incorporates features like short-circuit protection and solder heat effect mitigation that align with automotive subsystem requirements. However, it is not AEC-Q100 qualified; for production automotive ECUs, consult Analog Devices' automotive-grade alternatives such as the ADR4550.
REF195GS-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):
- 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-SOIC
REF195GS-REEL7 FAQ
1.How can I place an order for REF195GS-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for REF195GS-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 REF195GS-REEL7 reliable?
The price and inventory of REF195GS-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REF195GS-REEL7 is usually 5 days.
3.What payment methods are accepted for REF195GS-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REF195GS-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REF195GS-REEL7?
REF195GS-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REF195GS-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 REF195GS-REEL7?
For technical support, including REF195GS-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REF195GS-REEL7 requirements.
6.How does Aetrix verify that REF195GS-REEL7 is sourced from the original manufacturer or authorized distributors?
All REF195GS-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 REF195GS-REEL7 meets industry standards.
7.What is the process for return or replacement of REF195GS-REEL7?
All REF195GS-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with REF195GS-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 REF195GS-REEL7 part is unused and in its original packaging.
Return procedure for REF195GS-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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