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Analog Devices Inc. OP191GS-REEL7
- Part No.:
- OP191GS-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OP191GS-REEL7.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,293
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Product details
Overview
OP191GS-REEL7 from Analog Devices is a micropower, single-supply rail-to-rail input/output operational amplifier in an 8-lead SOIC package. It operates from 2.7 V to 12 V, delivers 3 MHz gain bandwidth, 0.5 V/μs slew rate, and consumes only 300 μA per amplifier. It enables precision signal conditioning in battery-powered instrumentation and low-voltage sensor interfaces.
For engineers reviewing the OP191GS-REEL7 datasheet, OP191GS-REEL7 pinout, OP191GS-REEL7 application, or OP191GS-REEL7 equivalent, key selection criteria include rail-to-rail I/O swing at 3 V supply, 700 μV max offset voltage over –40°C to +125°C, input voltage range extending 10 V beyond either rail, and guaranteed operation down to 3 V single supply.
Technical Context
The OP191GS-REEL7 employs a dual-input-stage architecture-comprising complementary PNP and NPN differential pairs-that automatically switches based on common-mode voltage to maintain linearity across the full rail-to-rail input range. Its output stage uses collector-connected PNP/NPN transistors to achieve millivolt-level saturation, enabling true rail-to-rail output swing even under 2 kΩ load.
This architecture supports stable multistage filter design in single-supply systems and eliminates phase reversal when inputs exceed supply rails by up to 10 V. The device is fabricated on Analog Devices' CBCMOS process and specified across –40°C to +125°C for industrial reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 12 V - supports direct integration into 3 V battery-powered systems and higher-voltage industrial rails without regulation. |
| Gain Bandwidth Product | 3 MHz - enables stable closed-loop operation up to ~200 kHz with unity-gain stability and 45° phase margin. |
| Input Offset Voltage (max) | 1.0 mV over –40°C to +125°C - ensures ≤10 mV error in 10 V full-scale 3 V-supply sensor amplifiers without trimming. |
| Supply Current per Amplifier | 480 μA max at –40°C to +125°C - allows >10-year battery life in continuous 3 V monitoring nodes with 10 μA sleep current external control. |
| Rail-to-Rail Output Swing | Within 10 mV of rails at 100 kΩ load - preserves dynamic range in ADC driver stages and reference buffers operating near supply limits. |
| Input Voltage Range | GND to (VS + 10 V) - permits safe overvoltage tolerance during power sequencing or sensor fault conditions without latch-up. |
| Common-Mode Rejection Ratio | 65 dB min over temperature - maintains accuracy in noisy industrial environments with ground offsets up to ±100 mV. |
Pinout & Package
OP191GS-REEL7 is housed in an 8-lead narrow-body SOIC (SOIC_N) package with standard JEDEC MS-012AC footprint (5.0 mm × 4.0 mm, 1.27 mm pitch). Pin 1 is marked with a dot or beveled edge; pins are numbered counterclockwise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No Connect | Internally unconnected; must remain floating or grounded per PCB layout best practice - no routing or soldering required. |
| 2 (–INA) | Inverting Input | Differential input node accepting signals from 0 V to VS + 10 V; bias current flows out below ~1.3 V below VS, in above that threshold. |
| 3 (+INA) | Non-Inverting Input | Differential input node with identical overvoltage tolerance and rail-to-rail common-mode range as Pin 2. |
| 4 (–V) | Negative Supply / Ground | Reference terminal for single-supply operation; tied to system GND in 3 V–12 V configurations. |
| 5 (NC) | No Connect | Internally unconnected; leave unpopulated - no electrical or thermal function. |
| 6 (+V) | Positive Supply | Accepts 2.7 V to 12 V; PSRR ≥75 dB ensures immunity to supply ripple in shared-rail systems. |
| 7 (OUTA) | Amplifier Output | Delivers rail-to-rail swing (≤10 mV from rails at light load); capable of ±13.5 mA short-circuit current with thermal foldback. |
| 8 (NC) | No Connect | Unused terminal; no internal connection - must not be bonded or routed. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of 3 V supply headroom in sensor front-ends and DAC output buffers without level-shifting circuitry. |
| 300 μA supply current per amplifier | Reduces quiescent power to 0.9 mW at 3 V, critical for always-on IoT nodes and portable medical devices. |
| No phase reversal on overvoltage | Guarantees predictable behavior when inputs exceed rails by up to 10 V - eliminates latch-up risk in transducer fault conditions. |
| 3 MHz bandwidth at 3 V supply | Supports anti-aliasing filtering and fast-settling (22 μs to 0.01%) for 12-bit data acquisition at sampling rates up to 20 kSPS. |
| Specified from –40°C to +125°C | Validates performance in automotive engine compartments, industrial motor drives, and outdoor telecom equipment. |
Applications
| Battery-Powered Instrumentation | Power Supply Control and Protection |
|---|---|
|
Use Scenario: Portable pH meter with 3 V coin-cell supply and microamp-level current consumption. IC Role / Device Role / Timing Role: Front-end transimpedance amplifier converting nanoamp electrode current to voltage with rail-to-rail input range covering 0–3 V reference span. Use Value: 300 μA quiescent current extends battery life beyond 5 years; rail-to-rail I/O avoids signal clipping across full measurement range. |
Use Scenario: Overvoltage protection circuit in 5 V DC-DC converter output stage. IC Role / Device Role / Timing Role: Comparator-style monitor comparing output against 5.1 V Zener reference, driving shutdown logic via open-drain output interface. Use Value: Input withstands +15 V transient without damage; 700 μV offset ensures accurate trip point within ±10 mV at 5 V. |
| Remote Sensors | DAC Output Amplifiers |
|
Use Scenario: Wireless strain-gage node powered by Li-SOCl₂ battery, transmitting data every 10 minutes. IC Role / Device Role / Timing Role: Low-drift, low-power signal conditioner amplifying mV-level bridge outputs before ADC digitization. Use Value: 1.1 μV/°C offset drift minimizes calibration frequency; 10 V input overvoltage margin protects against ESD and cable coupling. |
Use Scenario: Precision 12-bit DAC buffer in programmable power supply generating 0–3 V control voltage. IC Role / Device Role / Timing Role: Unity-gain voltage follower driving 10 kΩ load with minimal gain error and distortion. Use Value: Rail-to-rail output swing ensures full 0–3 V DAC range is delivered; 3 MHz GBW suppresses switching noise from digital backplane. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP192GS-REEL7 | Lower input offset (125 μV typ), higher supply current (650 μA), same SOIC-8 package and rail-to-rail I/O. | Better DC accuracy for precision instrumentation; less suitable for ultra-low-power battery operation. | Select OP192GS-REEL7 when offset voltage <200 μV is mandatory and supply current budget allows ≥600 μA. |
| MCP6001T-E/OT | Lower supply current (100 μA), narrower bandwidth (1 MHz), CMOS input (0.5 pA bias), SOT-23-5 package. | Superior power efficiency for intermittent-sampling systems; lacks 10 V input overvoltage tolerance and robustness in noisy environments. | Select MCP6001T-E/OT when sub-150 μA quiescent current is critical and input overvoltage events are absent or externally clamped. |
Compared with OP191GS-REEL7, OP192GS-REEL7 trades 2× higher supply current for 4× lower offset voltage, while MCP6001T-E/OT reduces current by 67% but sacrifices bandwidth, overvoltage resilience, and industrial temperature rating.
Availability
OP191GS-REEL7 is available at Aetrix Electronics and suitable for battery-powered instrumentation, remote sensors, and power supply control applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OP191GS-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The OPx91 family-including OP191GS-REEL7-is designed for micropower, single-supply signal conditioning in harsh industrial and portable environments where rail-to-rail operation, wide input overvoltage tolerance, and extended temperature performance are essential.
FAQ
What supply voltage range does the OP191GS-REEL7 support?
The OP191GS-REEL7 operates from 2.7 V to 12 V single supply or ±5 V dual supply. It is fully specified at 3 V, making it ideal for direct use with lithium coin cells and low-voltage microcontrollers. Absolute maximum supply is 16 V, and the device remains functional across the full industrial temperature range of –40°C to +125°C at all valid supply voltages.
Does the OP191GS-REEL7 have rail-to-rail input and output capability?
Yes, the OP191GS-REEL7 features true rail-to-rail input and output operation. Its input common-mode range extends from GND to VS + 10 V, and its output swings to within 10 mV of both supply rails under light load (100 kΩ). This enables full dynamic range utilization in 3 V systems without external level-shifting components.
What is the maximum input offset voltage for OP191GS-REEL7 over temperature?
The OP191GS-REEL7 has a maximum input offset voltage of 1.0 mV over the full operating temperature range of –40°C to +125°C. At 25°C, typical offset is 500 μV, with a drift of only 1.1 μV/°C - ensuring stable DC performance in thermally varying environments such as automotive or industrial enclosures.
Can OP191GS-REEL7 safely handle input voltages beyond the supply rails?
Yes, the OP191GS-REEL7 tolerates input voltages up to 10 V beyond either supply rail (GND to VS + 10 V) without phase reversal or latch-up. Internal 5 kΩ series resistors and differential diodes limit fault current, enabling robust operation in sensor fault conditions, hot-plug interfaces, and systems with asynchronous power sequencing.
What package type and lead count does OP191GS-REEL7 use?
The OP191GS-REEL7 is supplied in an 8-lead narrow-body SOIC (SOIC_N) package compliant with JEDEC MS-012AC, measuring 5.0 mm × 4.0 mm with 1.27 mm lead pitch. It contains two no-connect pins (1, 5, and 8), one inverting input (2), one non-inverting input (3), ground (4), positive supply (6), and output (7).
OP191GS-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.5V/µs
- Gain Bandwidth Product:
- 3 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 30 nA
- Voltage - Input Offset:
- 80 µV
- Current - Supply:
- 260µA
- Current - Output / Channel:
- 16 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
OP191GS-REEL7 FAQ
1.How can I place an order for OP191GS-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for OP191GS-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 OP191GS-REEL7 reliable?
The price and inventory of OP191GS-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OP191GS-REEL7 is usually 5 days.
3.What payment methods are accepted for OP191GS-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OP191GS-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OP191GS-REEL7?
OP191GS-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OP191GS-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 OP191GS-REEL7?
For technical support, including OP191GS-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OP191GS-REEL7 requirements.
6.How does Aetrix verify that OP191GS-REEL7 is sourced from the original manufacturer or authorized distributors?
All OP191GS-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 OP191GS-REEL7 meets industry standards.
7.What is the process for return or replacement of OP191GS-REEL7?
All OP191GS-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with OP191GS-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 OP191GS-REEL7 part is unused and in its original packaging.
Return procedure for OP191GS-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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