My Inquiry
My Account
Analog Devices Inc. REF195GS
- Part No.:
- REF195GS
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
REF195GS.pdf
- Description:
- IC VREF SERIES 0.2% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,410
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
REF195GS from Analog Devices is a precision micropower low-dropout 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 - used in high-accuracy ADC/DAC biasing, portable instrumentation, and solar-powered sensor nodes.
For engineers reviewing the REF195GS datasheet, REF195GS pinout, REF195GS application, or REF195GS equivalent, key selection criteria include dropout voltage (0.50 V @ 10 mA), sleep-mode current (15 μA), load regulation (4 ppm/mA), and SOIC_N package compatibility for space-constrained industrial designs.
Technical Context
The REF195GS employs a patented curvature-corrected band gap core with laser-trimmed thin-film resistors to achieve low drift over −40°C to +85°C. Its SLEEP pin enables TTL/CMOS-compatible shutdown, reducing quiescent current to ≤15 μA while disabling output.
It operates with input voltages as low as 100 mV above nominal output (i.e., ≥5.10 V), supports up to 30 mA output current, and requires a 1 μF output bypass capacitor for stability per datasheet specification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Output Voltage | 5.00 V - precisely trimmed for use as reference in 5 V data converters and analog signal chains |
| Initial Accuracy | ±2 mV maximum at 25°C - enables 16-bit ADC systems without calibration |
| Temp Coefficient | 5 ppm/°C max (E grade) - ensures ≤0.75 mV drift over −40°C to +85°C |
| Dropout Voltage | 0.50 V @ 10 mA - allows operation from 5.5 V supply in battery-powered systems |
| Supply Current | 45 μA max - supports multi-year operation on coin-cell or energy-harvesting sources |
| Sleep Mode Current | 15 μA max - reduces power during idle periods in duty-cycled sensor nodes |
| Load Regulation | 4 ppm/mA - maintains <0.02 mV output shift per mA load change |
| Line Regulation | 4 ppm/V - limits output variation to <0.02 mV per volt input change |
Pinout & Package
REF195GS is packaged in an 8-lead SOIC_N (SOIC narrow-body) with exposed pad option not specified; 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 Zener trim point | No user connection - resistance varies per unit; floating required |
| 2 (VS) | Positive supply input | Accepts 5.10 V to 15 V; dropout as low as 0.50 V |
| 3 (SLEEP) | Digital enable control | Low TTL/CMOS level disables output and reduces current to ≤15 μA |
| 4 (GND) | Analog ground reference | Must be tied to system ground; 1 μF bypass capacitor required at OUTPUT–GND |
| 5 (TP) | Factory Zener trim point | No user connection - not electrically functional in application |
| 6 (NC) | No connect | Internally unused; leave unconnected |
| 7 (NC) | No connect | Internally unused; leave unconnected |
| 8 (OUTPUT) | Precision 5.00 V source | Delivers up to 30 mA; requires 1 μF ceramic capacitor to GND for stability |
Key Features
| Feature | Design Value |
|---|---|
| Curvature-corrected band gap | Enables 5 ppm/°C tempco without external compensation components |
| Laser-trimmed thin-film resistors | Guarantees ±2 mV initial accuracy without post-assembly calibration |
| Low-dropout architecture | Operates from supplies only 100 mV above 5.00 V output - ideal for single-cell Li-ion or supercapacitor systems |
| SLEEP pin control | Reduces supply current from 45 μA to 15 μA with no external circuitry |
| Short-circuit protection | Prevents damage during accidental output-to-ground faults in field-deployed instruments |
| Extended temperature range | Specified from −40°C to +85°C with typical performance to +125°C for automotive under-hood sensing |
Applications
| Portable Instrumentation | High-Resolution Data Acquisition |
|---|---|
Use Scenario: Handheld multimeters and battery-operated environmental sensors requiring stable reference over wide temperature swings and long shelf life. IC Role / Device Role / Timing Role: Primary 5.00 V reference for SAR ADCs and precision op-amp biasing. Use Value: 45 μA supply current and 5 ppm/°C tempco enable >5-year battery life and <1 LSB error in 16-bit measurements. | Use Scenario: Industrial PLC analog input modules digitizing 4–20 mA loop signals with 16+ bit resolution. IC Role / Device Role / Timing Role: Reference source for dual-slope or sigma-delta ADCs interfacing with isolated current transducers. Use Value: 4 ppm/mA load regulation ensures reference stability despite varying channel count and multiplexer switching transients. |
| Solar-Powered Remote Sensors | Loop-Powered Field Instruments |
Use Scenario: Wireless soil moisture or air quality nodes powered by small photovoltaic cells and supercapacitors. IC Role / Device Role / Timing Role: Low-power voltage reference enabling wake-up ADC sampling during peak light conditions. Use Value: Sleep mode (15 μA) and 0.50 V dropout allow operation directly from 5.5 V PV harvesters without LDO pre-regulation. | Use Scenario: Two-wire 4–20 mA transmitters mounted in hazardous areas where power is derived entirely from the loop. IC Role / Device Role / Timing Role: Precision 5.00 V reference for DAC-based current output stages and sensor excitation. Use Value: 2 mV initial accuracy and 1.2 mV long-term stability (1000 h @ 125°C) maintain loop accuracy over 10+ year deployments. |
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 | 5.0 V, 3 ppm/°C max, 950 μA supply current, no sleep mode | Better tempco but 20× higher quiescent current; unsuitable for battery operation | Select when ultra-low drift dominates over power; avoid in energy-constrained designs |
| MAX6190AESA+ | 5.0 V, 5 ppm/°C max, 35 μA supply current, no SLEEP pin | Lower quiescent current but lacks digital shutdown; fixed SO-8 footprint | Choose for simpler control interface where sleep functionality is unnecessary |
Compared with ADR4550BRZ and MAX6190AESA+, the REF195GS uniquely balances 5 ppm/°C stability, 45 μA operation, and active sleep control - making it optimal for portable, solar, or loop-powered systems requiring both precision and micropower management.
Availability
REF195GS is available at Aetrix Electronics and suitable for portable instrumentation, high-resolution data acquisition, and solar-powered remote sensors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for REF195GS 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.
The REF19x series was designed specifically for micropower, low-dropout precision reference needs in portable, battery- and energy-harvesting–powered instrumentation and industrial sensing applications.
FAQ
What is the nominal output voltage of the REF195GS?
The REF195GS provides a precisely trimmed nominal output voltage of 5.00 V, with initial accuracy of ±2 mV at 25°C for E-grade units. This value is laser-trimmed using thin-film resistors and remains stable across load, line, and temperature variations per its published specifications in the Analog Devices REF19x datasheet Rev. L.
Does the REF195GS require an output bypass capacitor?
Yes, the REF195GS requires a minimum 1 μF ceramic capacitor connected between the OUTPUT and GND pins for stability and noise reduction. This is explicitly mandated in the datasheet's Applications Information section and affects load regulation, noise performance (50 μV p-p, 0.1 Hz to 10 Hz), and transient response - omitting it risks oscillation or degraded accuracy.
What is the minimum input voltage needed for the REF195GS to regulate at full load?
The REF195GS achieves regulation with a minimum input voltage of 5.50 V at 10 mA load (0.50 V dropout), and 6.30 V at 30 mA load (1.30 V dropout). Its low-dropout architecture allows operation from supplies as low as 100 mV above nominal output - critical for single-supply systems powered by Li-ion cells or energy harvesters.
How does the SLEEP pin function on the REF195GS?
The SLEEP pin on the REF195GS accepts TTL- or CMOS-level logic: a low signal (≤0.8 V) disables the output and reduces supply current to ≤15 μA, while a high signal (≥2.4 V) enables normal operation at ≤45 μA. This feature is fully characterized - including input current (−8 μA) and threshold levels - and requires no external components to implement power-gating in duty-cycled sensor nodes.
Is the REF195GS specified for automotive temperature ranges?
The REF195GS is fully specified over the extended industrial range of −40°C to +85°C, with typical performance validated from −40°C to +125°C. While not AEC-Q100 qualified, its tested behavior at +125°C - including 10 ppm/°C tempco (G grade) and 20 ppm/V line regulation - supports under-hood sensor applications where full qualification is not mandated.
REF195GS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- REF19
- Packaging:
- Tube
- 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 FAQ
1.How can I place an order for REF195GS through Aetrix?
Please submit a Request for Quotation (RFQ) for REF195GS 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 reliable?
The price and inventory of REF195GS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REF195GS is usually 5 days.
3.What payment methods are accepted for REF195GS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REF195GS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REF195GS?
REF195GS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REF195GS 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?
For technical support, including REF195GS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REF195GS requirements.
6.How does Aetrix verify that REF195GS is sourced from the original manufacturer or authorized distributors?
All REF195GS 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 meets industry standards.
7.What is the process for return or replacement of REF195GS?
All REF195GS units undergo pre-shipment inspection (PSI). If there is an issue with REF195GS, 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 part is unused and in its original packaging.
Return procedure for REF195GS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
REF195GS Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
-
LM4040CYM3-2.5-TR
Microchip Technology
-
LM4040CYM3-4.1-TR
Microchip Technology
-
LM4040EIM3-2.5/NOPB
Texas Instruments
-
AZ431LBNTR-G1
Diodes Incorporated
-
LM4040D20IDBZR
Texas Instruments
-
LM4041DIM3-ADJ/NOPB
Texas Instruments
-
LM4040DIM3X-2.5/NOPB
Texas Instruments
-
LM4040DIM3-2.5/NOPB
Texas Instruments
-
AZ431LANTR-G1
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
