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Analog Devices Inc. REF195GS-REEL
- Part No.:
- REF195GS-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
REF195GS-REEL.pdf
- Description:
- IC VREF SERIES 0.2% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,214
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Product details
Overview
REF195GS-REEL 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 dropout voltage as low as 0.50 V at 10 mA load. It operates from supplies only 100 mV above its output and supports portable instrumentation, high-resolution ADC/DAC biasing, and solar-powered sensor nodes.
For engineers reviewing the REF195GS-REEL datasheet, REF195GS-REEL pinout, REF195GS-REEL application, or REF195GS-REEL equivalent, key selection criteria include its 45 μA supply current, sleep mode reducing current to 15 μA, 30 mA output drive capability, and SOIC_N-8 package compatibility with Kelvin-sensing layouts for metrology-grade stability.
Technical Context
The REF195GS-REEL uses a patented curvature-corrected band gap core with laser-trimmed thin-film resistors to achieve 5 ppm/°C max TCVO over −40°C to +85°C and 2 ppm/°C typical TCVO over −40°C to +125°C. Its LDV architecture enables regulation with input voltages as low as 5.50 V at 10 mA load.
It integrates a TTL/CMOS-compatible SLEEP pin that disables output and reduces quiescent current to ≤15 μA, while maintaining short-circuit protection and requiring only a 1 μF output bypass capacitor for stability. Load regulation is specified at 4 ppm/mA (E grade), and line regulation at 4 ppm/V (E grade) at 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Output Voltage | 5.00 V - precisely trimmed for high-accuracy analog signal chains and reference-grade DAC/ADC operation |
| Initial Accuracy | ±2 mV maximum (E grade) - enables 16-bit+ system accuracy without post-calibration in factory-set applications |
| Temp Coefficient | 5 ppm/°C maximum (−40°C to +85°C, E grade) - ensures ≤0.5 mV drift across industrial temperature range |
| Supply Current | 45 μA maximum - supports multi-year battery life in portable instruments and loop-powered sensors |
| Sleep Mode Current | 15 μA maximum - allows ultra-low-power wake-on-event architectures with fast output re-enable |
| Dropout Voltage | 0.50 V at 10 mA load - permits operation from single Li-ion or 5.5 V rail with margin for aging and ripple |
| Output Noise | 50 μV p-p (0.1 Hz to 10 Hz) - suitable for 24-bit delta-sigma ADCs without external filtering |
Pinout & Package
REF195GS-REEL is housed in an 8-lead SOIC_N (SOIC narrow-body) package, pin-compatible with industry-standard SOIC-8 footprints and optimized for thermal stability and low parasitic inductance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (TP) | Factory Test Point | Zener-zap trimming node - must remain unconnected in circuit; not for user routing or decoupling |
| 2 (VS) | Positive Supply Input | Accepts 5.10 V to 15 V; dropout as low as 0.50 V enables efficient use of marginal supply rails |
| 3 (SLEEP) | Digital Sleep Control | TTL/CMOS-compatible input; logic low disables output and reduces IQ to ≤15 μA |
| 4 (GND) | Analog Ground Reference | Primary return path for output current and internal bias; requires low-impedance connection to system ground plane |
| 5 (TP) | Factory Test Point | Second Zener-zap node - unconnected in application; no electrical function beyond factory calibration |
| 6 (NC) | No Connect | Internally unused; must be left floating - not tied to GND or any other potential |
| 7 (NC) | No Connect | Internally unused; must be left floating - avoids unintended coupling or leakage paths |
| 8 (OUTPUT) | Precision Voltage Output | 5.00 V regulated output; 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 over −40°C to +85°C without external compensation components |
| Laser-Trimmed Thin-Film Resistors | Guarantees ±2 mV initial accuracy and long-term stability of ≤1.2 mV after 1000 hours at 125°C |
| Low-Dropout Architecture | Regulates from inputs only 100 mV above 5.00 V output - critical for energy-constrained solar and battery systems |
| Integrated Sleep Mode | Reduces supply current from 45 μA to 15 μA with TTL/CMOS-compatible control - simplifies power sequencing |
| Short-Circuit Protected Output | Withstands indefinite output short to GND without damage or parameter shift - enhances field reliability |
Applications
| Portable Instrumentation | High-Resolution Data Acquisition |
|---|---|
|
Use Scenario: Handheld multimeters and portable gas analyzers operating on single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Primary 5.00 V reference for 24-bit sigma-delta ADCs and precision op-amp biasing. Use Value: 0.50 V dropout enables full-scale operation down to 5.5 V battery voltage; 45 μA IQ extends battery life beyond 5 years. |
Use Scenario: Industrial PLC analog input modules requiring 16–24 bit measurement accuracy. IC Role / Device Role / Timing Role: Stable excitation source for ratiometric bridge sensors and reference for SAR and delta-sigma ADCs. Use Value: 5 ppm/°C TCVO and 2 mV initial accuracy ensure <0.01% total error across −40°C to +85°C ambient. |
| Solar-Powered Remote Sensors | Loop-Powered 4–20 mA Transmitters |
|
Use Scenario: Wireless environmental monitors powered by small photovoltaic cells with highly variable output. IC Role / Device Role / Timing Role: Low-quiescent reference for microcontroller ADC and sensor signal conditioning under microamp-level supply budgets. Use Value: Sleep mode reduces current to 15 μA during idle periods; 30 mA drive supports active sensor excitation bursts. |
Use Scenario: Two-wire 4–20 mA transmitters drawing all operating power from the loop. IC Role / Device Role / Timing Role: Precision 5.00 V reference for current-loop DACs and microcontroller voltage monitoring. Use Value: 45 μA supply current minimizes loop burden; low dropout preserves headroom for internal LDO and digital logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR4550BRZ-R7 | 5.0 V output, 3 ppm/°C max TCVO, 20 μA supply current, but no sleep mode and higher minimum input voltage (6.0 V) | Better TCVO and lower IQ, but incompatible with sub-6 V supplies and lacks power-gating capability | Choose ADR4550BRZ-R7 when ultimate temperature stability is required and supply >6.0 V is guaranteed. |
| MAX6126ASA50+T | 5.0 V output, 5 ppm/°C max TCVO, 35 μA supply current, no sleep pin, SO-8 package | Similar accuracy and TCVO, but lacks sleep control and has slightly higher noise (60 μV p-p) | Choose MAX6126ASA50+T when board space allows same footprint and sleep functionality is unnecessary. |
Compared with REF195GS-REEL, ADR4550BRZ-R7 offers superior temperature stability but sacrifices supply flexibility and power gating; MAX6126ASA50+T matches key specs closely but omits sleep mode and adds 10 μV p-p noise - making REF195GS-REEL optimal for battery- or solar-powered systems needing dynamic power control.
Availability
REF195GS-REEL is available at Aetrix Electronics and suitable for portable instrumentation, high-resolution data acquisition, and solar-powered remote sensing requiring stable component supply with extended temperature performance and low-power operation.
Supply support for REF195GS-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, serving industrial, automotive, communications, and healthcare markets since 1965.
The REF19x series was designed specifically for micropower, low-dropout precision voltage referencing in space- and energy-constrained systems - emphasizing accuracy retention across temperature, minimal supply overhead, and integrated power management.
FAQ
What is the nominal output voltage and initial accuracy of the REF195GS-REEL?
The REF195GS-REEL provides a nominal output voltage of 5.00 V with initial accuracy of ±2 mV maximum for the E grade at 25°C. This specification is achieved via laser trimming of thin-film resistors and excludes solder heat-induced shift, which is addressed separately in the Applications Information section of the datasheet.
Does the REF195GS-REEL support sleep mode, and how is it activated?
Yes, the REF195GS-REEL supports sleep mode via its dedicated SLEEP pin (Pin 3). Applying a logic low (≤0.8 V) disables the output and reduces supply current to ≤15 μA. A logic high (≥2.4 V) re-enables regulation with typical wake-up time under 10 μs. The REF195GS-REEL sleep function is fully compatible with standard TTL and CMOS logic drivers.
What package type and pin configuration does the REF195GS-REEL use?
The REF195GS-REEL is supplied in an 8-lead SOIC_N (narrow-body SOIC) package, identified by the "GS" suffix. Its pinout includes VS (Pin 2), SLEEP (Pin 3), GND (Pin 4), OUTPUT (Pin 8), two factory test points (Pins 1 and 5), and two no-connect terminals (Pins 6 and 7) - all documented in Figure 1 of the REF19x datasheet Rev. L.
What is the minimum supply voltage required for the REF195GS-REEL to regulate at full load?
The REF195GS-REEL achieves regulation with a minimum dropout voltage of 0.50 V at 10 mA load, meaning it requires a supply voltage of at least 5.50 V to maintain 5.00 V output under that condition. At 30 mA, dropout rises to 1.30 V, requiring ≥6.30 V input - enabling reliable operation from common 5.5 V or 6.0 V system rails.
Is an output capacitor required for stable operation of the REF195GS-REEL?
Yes, a 1 μF ceramic capacitor is required between the OUTPUT (Pin 8) and GND (Pin 4) pins for stable operation and optimal noise performance. This capacitor suppresses high-frequency instability and reduces 0.1 Hz–10 Hz output noise to the specified 50 μV p-p level. Larger values may improve PSRR but do not replace the mandatory 1 μF minimum.
REF195GS-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):
- 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-REEL FAQ
1.How can I place an order for REF195GS-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for REF195GS-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 REF195GS-REEL reliable?
The price and inventory of REF195GS-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REF195GS-REEL is usually 5 days.
3.What payment methods are accepted for REF195GS-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REF195GS-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REF195GS-REEL?
REF195GS-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REF195GS-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 REF195GS-REEL?
For technical support, including REF195GS-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REF195GS-REEL requirements.
6.How does Aetrix verify that REF195GS-REEL is sourced from the original manufacturer or authorized distributors?
All REF195GS-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 REF195GS-REEL meets industry standards.
7.What is the process for return or replacement of REF195GS-REEL?
All REF195GS-REEL units undergo pre-shipment inspection (PSI). If there is an issue with REF195GS-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 REF195GS-REEL part is unused and in its original packaging.
Return procedure for REF195GS-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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