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Analog Devices Inc./Maxim Integrated OP90GS
- Part No.:
- OP90GS
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OP90GS.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,180
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Product details
Overview
OP90GS from Analog Devices is a precision low-voltage micropower operational amplifier in 8-lead SOIC_N (R-8) package, featuring 150 µV max input offset voltage, 20 µA max supply current, rail-to-rail input and output swing down to ground, and single-supply operation from 1.6 V to 36 V - enabling zero-in/zero-out functionality in battery-powered sensor front-ends and portable instrumentation.
For engineers reviewing the OP90GS datasheet, OP90GS pinout, OP90GS application, or OP90GS equivalent, this page delivers verified specifications, real-world use cases including voltage reference design and 2-wire current transmitters, pin-level circuit roles, and two validated alternative op amps with documented functional trade-offs for low-power precision signal conditioning.
Technical Context
The OP90GS employs a PNP-input stage with series protection resistors, enabling ±20 V input overvoltage tolerance beyond rails. Its internal offset nulling architecture supports external trimming via Pins 1 and 8, and its high open-loop gain (>700 V/mV) combined with >100 dB CMRR enables stable closed-loop performance in high-impedance, low-noise measurement paths.
It operates across –40°C to +85°C with guaranteed 180 µV max VOS at temperature extremes and maintains 5 mA min output drive into 2 kΩ loads while delivering 5 V/ms min slew rate - making it suitable for DC-coupled, low-bandwidth precision circuits where quiescent power must remain below 30 µW at 3 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6 V to 36 V single supply; ±0.8 V to ±18 V dual supply - supports direct lithium cell (3 V) and industrial 24 V systems without regulation |
| Input Offset Voltage (Max) | 150 µV at 25°C - eliminates need for external nulling in most precision DC applications |
| Quiescent Supply Current (Max) | 20 µA at ±15 V - enables multi-year operation on AA batteries in always-on remote sensors |
| Input Voltage Range | Includes negative rail (ground in single supply) - allows true "zero-in" operation for unipolar sensor signals |
| Output Voltage Swing | Within 100 mV of ground and within 1.5 V of positive rail at 10 kΩ load - supports "zero-out" interface with ADCs and logic |
| Open-Loop Gain (Min) | 700 V/mV (700,000 V/V) - ensures <0.01% gain error in unity-gain buffers and high-precision amplifiers |
| PSRR (Max) | 5.6 µV/V - minimizes offset drift due to battery voltage sag or supply ripple in portable equipment |
Pinout & Package
OP90GS is housed in an 8-lead SOIC_N (R-8) package per JEDEC MS-012-AA, with 1.27 mm lead pitch, 4.90 mm × 3.90 mm body, and gull-wing leads. Thermal resistance θJA = 158°C/W (on 2-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOS NULL | Offset null adjust terminal; connects to wiper of external potentiometer for fine VOS trimming |
| 2 | –IN | Inverting input; high-impedance PNP node with ±20 V overvoltage tolerance |
| 3 | +IN | Non-inverting input; same PNP structure and protection as Pin 2 |
| 4 | V– | Negative supply or ground reference; required for biasing and output swing control |
| 5 | NC | No connect; internally unconnected - must be left floating or tied to V– for stability |
| 6 | OUT | Amplifier output; capable of sourcing/sinking ≥5 mA into 2 kΩ load with rail-to-rail swing |
| 7 | V+ | Positive supply; accepts up to +36 V or +18 V in dual-supply mode |
| 8 | VOS NULL | Second offset null terminal; completes external trim network with Pin 1 |
Key Features
| Feature | Design Value |
|---|---|
| True single-supply operation | Input and output ranges include ground - enables direct interfacing with unipolar sensors and microcontroller ADCs |
| Ultra-low quiescent current | ≤20 µA across full temperature range - extends battery life in wireless sensor nodes and portable meters |
| High open-loop gain & CMRR | ≥700 V/mV gain and ≥100 dB CMRR - ensures stable, accurate amplification in high-common-mode industrial sensing |
| Input overvoltage protection | ±20 V beyond supply rails - eliminates need for external clamping diodes in harsh EMI environments |
| Low 0.1–10 Hz noise | 3 µV p-p - critical for high-resolution DC measurements in strain gauge and thermopile interfaces |
Applications
| Battery-Powered Voltage Reference | 2-Wire 4–20 mA Current Transmitter |
|---|---|
Use Scenario: Precision 1.23 V reference powered by two AA cells for portable calibration equipment. IC Role / Device Role / Timing Role: OP90GS serves as error amplifier and output buffer in bandgap-based reference topology with active start-up forcing. Use Value: Draws only 17 µA total, enabling >18 months of operation; achieves 5.5 µV/°C drift and 85 µV/mA load regulation. |
Use Scenario: Industrial loop-powered transmitter converting 0–100 mV sensor output to 4–20 mA for PLC analog inputs. IC Role / Device Role / Timing Role: OP90GS acts as current-regulating transconductance amplifier with virtual-ground summing node. Use Value: Delivers 0.004% linearity and 0.0005%/V line rejection; supports 10–40 V compliance range with Schottky-protected input. |
| Micropower Full-Wave Rectifier | Single-Supply Instrumentation Amplifier |
Use Scenario: AC-coupled signal conditioning for biomedical or vibration sensors operating from 5 V single supply. IC Role / Device Role / Timing Role: OP90GS implements unity-gain inverter and active rectifier switch controller in one device. Use Value: Processes ±2.5 V inputs with rail-to-rail output swing; draws <25 µA and avoids dual-supply complexity. |
Use Scenario: High-CMRR front-end for bridge-based pressure or load-cell sensors in handheld test equipment. IC Role / Device Role / Timing Role: OP90GS forms differential-to-single-ended converter with feedback to trim pins for >110 dB CMRR. Use Value: Achieves <0.1% nonlinearity at G = 1000 over 2.5 V range; consumes only 15 µA and supports true zero-in/zero-out. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision micropower op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX44260ASA+ | Lower VOS (10 µV typ), higher ISY (65 µA), no offset null pins | Better DC accuracy but higher power; unsuitable where external trimming is required | Choose MAX44260ASA+ when ultra-low offset dominates over power and trimming flexibility |
| LTC2050HS5#TRMPBF | Zero-drift architecture, 0.5 µV max VOS, 115 µA ISY, SO-5 package | Superior long-term drift and 1/f noise; incompatible pinout and no null terminals | Choose LTC2050HS5#TRMPBF for ultra-stable DC gain stages where layout change is acceptable |
Compared with MAX44260ASA+ and LTC2050HS5#TRMPBF, OP90GS offers unique offset nulling capability, lowest quiescent current among precision op amps with trimming, and proven robustness in battery-powered references and current loops - at the cost of higher VOS and lower bandwidth.
Availability
OP90GS is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial 4–20 mA transmitters, and portable sensor signal conditioning requiring stable component supply across extended temperature and long-lifecycle programs.
Supply support for OP90GS 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, serving industrial, automotive, communications, and healthcare markets since 1965.
The OP90GS belongs to Analog Devices' precision micropower op amp product line, designed specifically for ultra-low-power, high-accuracy signal conditioning in battery- and energy-harvesting–powered systems where DC precision and rail-to-rail operation are essential.
FAQ
What is the maximum supply voltage for OP90GS?
The OP90GS supports a maximum supply voltage of ±18 V in dual-supply mode or +36 V in single-supply operation. Absolute maximum ratings specify ±18 V on V+ and V– pins; exceeding this risks permanent damage. Operation at 36 V single supply is permitted only between V+ and V–, with V– referenced to ground.
Does OP90GS support true rail-to-rail output swing?
OP90GS does not provide full rail-to-rail output swing. Its output swings to within ~100 mV of ground and within ~1.5 V of the positive rail under 10 kΩ load. At 2 kΩ, swing degrades further - e.g., VOL = 100 µV typical but not guaranteed near ground. True zero-out requires external pull-down or load impedance ≤1 MΩ below 0.8 V.
Can OP90GS operate from a single 1.8 V supply?
Yes - OP90GS is fully specified down to 1.6 V single supply. At 1.8 V, it maintains 150 µV max VOS, 20 µA max ISY, and functional input/output swing including ground. Output drive capability reduces at low voltage, but 5 mA min is guaranteed only at VS ≥ ±1.5 V (i.e., ≥3 V dual or ≥3 V single).
What is the purpose of Pins 1 and 8 on OP90GS?
Pins 1 and 8 are dedicated offset null terminals. They connect to the ends of an external 100 kΩ potentiometer (wiper to V–), allowing manual adjustment of input offset voltage. This feature enables trimming to <10 µV in final assembly and compensates for PCB-level thermal gradients affecting VOS drift.
Is OP90GS RoHS compliant?
Yes - OP90GSZ-REEL7 (the orderable version referenced in the source data) is RoHS compliant, indicated by the "Z" suffix per Analog Devices' ordering guide. The base OP90GS part number refers to the same SOIC_N package and performance grade, and all current production OP90GS variants meet RoHS Directive 2011/65/EU.
OP90GS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 0.012V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- -
- Current - Input Bias:
- 4 nA
- Voltage - Input Offset:
- 125 µV
- Current - Supply:
- 14µA
- Current - Output / Channel:
- 5 mA
- Voltage - Supply Span (Min):
- 1.6 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
OP90GS FAQ
1.How can I place an order for OP90GS through Aetrix?
Please submit a Request for Quotation (RFQ) for OP90GS 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 OP90GS reliable?
The price and inventory of OP90GS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OP90GS is usually 5 days.
3.What payment methods are accepted for OP90GS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OP90GS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OP90GS?
OP90GS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OP90GS 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 OP90GS?
For technical support, including OP90GS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OP90GS requirements.
6.How does Aetrix verify that OP90GS is sourced from the original manufacturer or authorized distributors?
All OP90GS 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 OP90GS meets industry standards.
7.What is the process for return or replacement of OP90GS?
All OP90GS units undergo pre-shipment inspection (PSI). If there is an issue with OP90GS, 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 OP90GS part is unused and in its original packaging.
Return procedure for OP90GS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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