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Analog Devices Inc. OP290GPZ
- Part No.:
- OP290GPZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
OP290GPZ.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:153
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Product details
Overview
OP290GPZ from Analog Devices is a precision, low-power dual operational amplifier in an 8-lead PDIP package, featuring rail-to-rail input and output swing down to ground, 20 µA max supply current per amplifier, 200 µV max input offset voltage, and operation from 1.6 V single supply or ±0.8 V dual supplies. It enables zero-in/zero-out signal conditioning in battery-powered remote sensors and portable instrumentation.
For engineers reviewing the OP290GPZ datasheet, OP290GPZ pinout, OP290GPZ application, or OP290GPZ equivalent, key selection criteria include micropower consumption under 30 µA per channel, guaranteed input/output voltage range including ground at 1.6 V supply, high open-loop gain (>400 V/mV), and robust PSRR (<5.6 µV/V) for stable performance in low-voltage, noise-sensitive systems.
Technical Context
The OP290GPZ employs a PNP-input stage with on-chip protection resistors, enabling ±20 V input overvoltage tolerance beyond supply rails. Its output stage provides active pull-down to ~0.8 V above ground, requiring only ≤1 MΩ load to reach true 0 V in single-supply mode.
It delivers 5 mA min output drive into 2 kΩ loads while maintaining >700 V/mV open-loop gain and >100 dB common-mode rejection across –40°C to +85°C. Channel separation exceeds 120 dB at 20 Vp-p, supporting precision dual-channel signal paths without crosstalk-induced error.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6 V to 36 V single supply or ±0.8 V to ±18 V dual supply - supports direct lithium cell (3 V) and wide industrial rail operation |
| Quiescent Current | 24 µA to 50 µA per amplifier at –40°C to +85°C - enables multi-year battery life in always-on sensor nodes |
| Input Offset Voltage | 200 µV max (–40°C to +85°C) - eliminates need for external nulling circuitry in precision DC-coupled stages |
| Open-Loop Gain | 300 V/mV min at ±5 V, RL = 100 kΩ - ensures <0.01% gain error in unity-gain buffer and low-gain amplifiers |
| PSRR | 5.6 µV/V max - suppresses supply ripple-induced offset drift critical in battery-powered measurement front-ends |
| Input Voltage Range | 0 V to 3.5 V at V+ = 5 V, V– = 0 V - guarantees full ground-referenced input capture in single-supply systems |
| Output Voltage Swing | 0 V to 4.1 V at V+ = 5 V, RL = 2 kΩ - enables full-scale analog-to-digital conversion without level-shifting |
Pinout & Package
OP290GPZ is housed in an 8-lead plastic dual in-line package (PDIP), compliant with JEDEC MO-095AA, with 0.300-inch body width and 0.100-inch lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | +IN A | Noninverting input of Amplifier A - accepts signals down to ground in single-supply operation |
| 2 | –IN A | Inverting input of Amplifier A - protected to ±20 V beyond supply rails |
| 3 | OUT A | Output of Amplifier A - swings to within 0.8 V of ground and to within 0.9 V of V+ |
| 4 | V– | Negative supply terminal - tied to ground in single-supply configurations |
| 5 | V+ | Positive supply terminal - accepts 1.6 V to 36 V or dual ±0.8 V to ±18 V |
| 6 | –IN B | Inverting input of Amplifier B - electrically isolated from Amplifier A with >120 dB channel separation |
| 7 | +IN B | Noninverting input of Amplifier B - identical input characteristics to Pin 1 |
| 8 | OUT B | Output of Amplifier B - independently drives loads up to 5 mA without affecting Amplifier A |
Key Features
| Feature | Design Value |
|---|---|
| True single-supply operation | Input and output voltage ranges include ground at 1.6 V supply - enables "zero-in, zero-out" signal chain design without level shifters |
| Ultra-low quiescent current | 24 µA max per amplifier over full temperature range - extends battery life in portable instruments and remote sensors |
| High open-loop gain & CMRR | Min 300 V/mV gain and 80 dB CMR at 0–3.5 V common-mode range - maintains accuracy in noisy industrial environments |
| Robust input protection | ±20 V input overvoltage tolerance beyond supply rails - eliminates need for external clamping diodes in field-deployed equipment |
| Stable capacitive load drive | 650 pF max stable capacitive load - supports direct connection to ADC input filters and long PCB traces without oscillation |
Applications
| 4–20 mA Temperature Transmitter | Low-Overhead Voltage Reference |
|---|---|
Use Scenario: Industrial temperature sensing node converting RTD or thermistor voltage to standardized 4–20 mA loop current for PLC interface. IC Role / Device Role / Timing Role: One OP290GPZ amplifier buffers the temperature-sensing element; the other regulates loop current via summing-node control. Use Value: Enables calibration-free operation over –50°C to +150°C with <0.5°C error, leveraging OP290GPZ's low TCVOS (1.2 µV/°C) and high PSRR (5.6 µV/V). | Use Scenario: Low-dropout voltage reference generating 4.5 V from 4.6–36 V supply for precision ADCs and DACs in battery-backed systems. IC Role / Device Role / Timing Role: OP290GPZ acts as precision gain stage and output buffer for REF-43BZ, driving PNP pass transistor to minimize overhead. Use Value: Achieves only 0.1 V overhead and 12 ppm/°C drift - enabled by OP290GPZ's rail-to-rail output swing and 200 µV max VOS. |
| Variable Slew Rate Filter | Lithium Cell-Powered Sensor Front-End |
Use Scenario: Pulse-noise suppression in pressure or flow transducer outputs where physical signal rates are inherently limited. IC Role / Device Role / Timing Role: OP290GPZ serves as comparator (A1) and integrator op amp (A2) in nonlinear filter topology controlling maximum output slew rate. Use Value: Limits transient response to <12 V/ms (set by R3/C2) while preserving fidelity of genuine slow-varying signals - exploiting OP290GPZ's 5 V/ms min slew rate and stable 650 pF drive. | Use Scenario: Continuous monitoring front-end in wireless environmental sensor using primary lithium SO2 cell (3 V nominal, flat discharge curve). IC Role / Device Role / Timing Role: OP290GPZ performs signal conditioning and buffering for analog sensor outputs prior to ADC sampling. Use Value: Draws only 24 µA per channel at 3 V supply - extends 1 Ah cell life beyond 3000 hours, validated in Figure 4 discharge test with 100 kΩ load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP297GPZ | Higher precision: 25 µV max VOS, 0.6 µV/°C TCVOS, but 125 µA supply current per amp | Used where ultra-low offset dominates power budget - e.g., strain gauge bridges with <10 ppm accuracy requirement | Select OP297GPZ only when VOS stability outweighs 5× higher current draw; OP290GPZ preferred for sub-50 µA systems. |
| AD8602ARZ | Rail-to-rail I/O, 120 µA supply current, 600 kHz GBW vs. OP290GPZ's 20 kHz - no guaranteed ground-swing below 1.8 V supply | Suitable for higher-speed, higher-power signal chains where bandwidth >100 kHz is required | Choose AD8602ARZ for AC-coupled or >1.8 V systems needing speed; OP290GPZ remains optimal for 1.6 V operation and micropower DC precision. |
Compared with OP297GPZ and AD8602ARZ, the OP290GPZ uniquely balances sub-30 µA quiescent current, guaranteed ground-referenced I/O at 1.6 V, and 200 µV VOS - making it irreplaceable in long-life, low-voltage, DC-precision applications like remote sensor nodes and loop-powered transmitters.
Availability
OP290GPZ is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial 4–20 mA transmitters, and low-overhead voltage reference designs requiring stable component supply across extended product lifecycles.
Supply support for OP290GPZ 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, communications, automotive, and healthcare markets.
The OP290GPZ belongs to Analog Devices' precision micropower op amp product line, engineered specifically for ultra-low-power, ground-sensing signal conditioning in battery- and energy-harvesting–powered systems.
FAQ
What is the minimum operating supply voltage for the OP290GPZ?
The OP290GPZ operates down to 1.6 V on single supply or ±0.8 V on dual supplies. This is confirmed in the General Description and Absolute Maximum Ratings sections of the datasheet. At 1.6 V, it maintains rail-to-rail input and output swing including ground, making the OP290GPZ suitable for direct integration with primary lithium cells and ultra-low-power sensor nodes where supply headroom is constrained.
Does the OP290GPZ support true ground-sensing input and output in single-supply mode?
Yes, the OP290GPZ supports true ground-sensing operation: its input common-mode range includes the negative rail (ground), and its output can swing to within 0.8 V of ground - with ≤1 MΩ load pulling it fully to 0 V. This "zero-in, zero-out" capability is explicitly stated in the General Description and verified in the Input Voltage Range and Output Voltage Swing specifications for V+ = 5 V, V– = 0 V conditions.
What is the maximum capacitive load the OP290GPZ can drive stably?
The OP290GPZ is stable driving up to 650 pF capacitive load with no oscillations, as specified in the Electrical Characteristics table under "Capacitive Load Stability." This value was measured under unity-gain configuration (AV = +1) and allows direct interfacing with ADC input capacitors, long PCB traces, or RC anti-aliasing filters without requiring isolation resistors or compensation networks in the OP290GPZ circuit design.
How does the OP290GPZ handle input overvoltage conditions?
The OP290GPZ incorporates internal protection resistors in series with both inverting and noninverting inputs, combined with high-breakdown PNP input transistors. This architecture allows the inputs to tolerate voltages up to ±20 V beyond either supply rail without damage - a specification confirmed in the Absolute Maximum Ratings table and elaborated in the Applications Information section on Input Voltage Protection.
Is the OP290GPZ suitable for 4–20 mA transmitter designs?
Yes, the OP290GPZ is explicitly validated for 4–20 mA transmitter applications, as demonstrated in Figure 5 and the Applications Information section. One half buffers the temperature-sensing voltage (VTEMP), while the other regulates loop current via summing-node control. Its low VOS (200 µV max), high PSRR (5.6 µV/V), and wide supply range (8 V to 40 V) enable ±0.5°C accuracy over –50°C to +150°C - directly supporting robust industrial transmitter designs using the OP290GPZ.
OP290GPZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 0.012V/µs
- Gain Bandwidth Product:
- 20 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 4 nA
- Voltage - Input Offset:
- 125 µV
- Current - Supply:
- 25µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 1.6 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
OP290GPZ FAQ
1.How can I place an order for OP290GPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for OP290GPZ 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 OP290GPZ reliable?
The price and inventory of OP290GPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OP290GPZ is usually 5 days.
3.What payment methods are accepted for OP290GPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OP290GPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OP290GPZ?
OP290GPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OP290GPZ 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 OP290GPZ?
For technical support, including OP290GPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OP290GPZ requirements.
6.How does Aetrix verify that OP290GPZ is sourced from the original manufacturer or authorized distributors?
All OP290GPZ 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 OP290GPZ meets industry standards.
7.What is the process for return or replacement of OP290GPZ?
All OP290GPZ units undergo pre-shipment inspection (PSI). If there is an issue with OP290GPZ, 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 OP290GPZ part is unused and in its original packaging.
Return procedure for OP290GPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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