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Analog Devices Inc. OP250GS
- Part No.:
- OP250GS
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OP250GS.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:189,120
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Product details
Overview
OP250GS from Analog Devices is a dual CMOS single-supply rail-to-rail input/output operational amplifier, specified for operation from 2.7 V to 6 V, delivering ±250 mA output current per channel, 4 MHz gain bandwidth, 6.5 V/µs slew rate, and guaranteed performance over –40°C to +125°C. It serves as a high-output-current buffer or signal conditioner in battery-powered medical sensors and multi-stage audio filters.
For engineers reviewing the OP250GS datasheet, OP250GS pinout, OP250GS application, or OP250GS equivalent, key selection criteria include rail-to-rail I/O capability at 3 V/5 V supply, low 600 µA per amplifier quiescent current, ±250 mA drive strength, 5 mV max input offset voltage, and SOIC-8 packaging with verified dual-channel isolation.
Technical Context
The OP250GS implements a CMOS input stage enabling picoampere-level input bias current (≤60 pA) and rail-to-rail common-mode input range (0 V to VS). Its output stage supports true rail-to-rail swing under load and remains stable driving up to 500 pF capacitive loads without external compensation.
It operates as a unity-gain-stable, high-output-current amplifier with no phase reversal across its full input range. The dual-channel architecture provides channel separation >60 dB at 1 kHz, supporting independent signal paths in compact analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 6 V - Enables direct use with Li-ion, 3.3 V, and 5 V rails without level-shifting. |
| Gain Bandwidth Product | 4 MHz - Supports stable closed-loop gain ≥10 at 400 kHz for anti-aliasing or active filtering. |
| Slew Rate | 6.5 V/µs - Delivers <1 µs settling for 2 V step signals, suitable for audio and sensor pulse conditioning. |
| Output Current | ±250 mA per channel - Drives low-impedance loads (e.g., 10 Ω headphones or 20 mA LED drivers) directly. |
| Input Offset Voltage | 5 mV max (–40°C to +125°C) - Limits DC error in precision gain stages without trimming. |
| Quiescent Current | 600 µA per amplifier - Enables dual-channel amplification in sub-1.5 mA total system power budgets. |
| Input Bias Current | 60 pA max - Preserves signal integrity when interfacing high-impedance sources (e.g., piezoelectric sensors). |
| Operating Temperature | –40°C to +125°C - Qualified for under-hood automotive and industrial embedded environments. |
Pinout & Package
OP250GS is housed in an 8-lead narrow-body SOIC (SO) package with exposed pad not present and standard JEDEC MS-012AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | –IN B | Inverting input of Channel B - Accepts differential or single-ended feedback configurations. |
| 2 | OUT B | Output of Channel B - Capable of sourcing/sinking ±250 mA into resistive or capacitive loads. |
| 3 | +IN B | Non-inverting input of Channel B - Rail-to-rail common-mode range (0 V to VS) enables ground-referenced sensing. |
| 4 | V+ | Positive supply rail - Shared by both amplifiers; decoupling required within 1 cm of this pin. |
| 5 | OUT A | Output of Channel A - Electrically isolated from OUT B; supports independent load driving. |
| 6 | –IN A | Inverting input of Channel A - Matches Channel B electrical characteristics for matched dual-path designs. |
| 7 | +IN A | Non-inverting input of Channel A - Identical input voltage range and bias current as +IN B. |
| 8 | V– | Negative supply rail (GND) - Substrate tied to this pin; must be low-impedance return path for both channels. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full dynamic range utilization in 3 V systems - e.g., 0–3 V ADC interface without level shifters. |
| No phase reversal | Prevents latch-up or instability when input exceeds supply rails - critical for sensor overvoltage transients. |
| Capacitive load stability | Stable with up to 500 pF - eliminates need for isolation resistors when driving ADC inputs or long traces. |
| Low input bias current | ≤60 pA allows direct connection to >100 MΩ source impedances (e.g., pH electrodes, photodiodes). |
| Unity-gain stable | Operates reliably at gain = 1 without external compensation - simplifies design of buffers and followers. |
Applications
| Battery-Powered Medical Sensors | Multi-Media Audio Output Stage |
|---|---|
Use Scenario: Signal conditioning for portable ECG or pulse oximetry front-ends powered by coin-cell or LiPo batteries. IC Role / Device Role / Timing Role: Dual-channel rail-to-rail buffer and gain stage amplifying microvolt-level biopotentials while rejecting common-mode noise. Use Value: 600 µA per amplifier quiescent current extends battery life; ±250 mA output drives anti-aliasing filters and ADC drivers without external transistors. | Use Scenario: Headphone driver and line-out buffer in portable media players and smart speakers. IC Role / Device Role / Timing Role: Dual op-amp configured as stereo output buffer with DC-coupled rail-to-rail swing into 16 Ω or 32 Ω loads. Use Value: 6.5 V/µs slew rate prevents slew-induced distortion at 20 kHz; ±250 mA per channel supports loud headphone peaks without clipping. |
| Remote Industrial Transducer Interface | ASIC Input/Output Amplifier |
Use Scenario: Signal conditioning for 4–20 mA loop-powered pressure or temperature transducers located in harsh factory environments. IC Role / Device Role / Timing Role: High-input-impedance receiver and low-impedance transmitter amplifier interfacing between transducer and microcontroller ADC/DAC. Use Value: 60 pA input bias current avoids loading high-Z sensor outputs; –40°C to +125°C rating ensures reliability near motors or boilers. | Use Scenario: Analog interface between mixed-signal ASICs and external sensors/actuators in safety-critical control modules. IC Role / Device Role / Timing Role: Dual-channel level translator and drive booster ensuring robust signal integrity across PCB boundaries. Use Value: Channel separation >60 dB at 1 kHz prevents crosstalk between analog subsystems; rail-to-rail I/O matches ASIC core voltage domains (e.g., 3.3 V logic). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual rail-to-rail operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8602ARZ | Lower 650 µA supply current but only ±30 mA output drive; 8 MHz GBW; same SOIC-8 package. | Better for low-power precision sensing; insufficient for headphone or 20 mA load driving. | Select AD8602ARZ when output current ≤30 mA suffices and higher bandwidth is needed. |
| TSV912IDT | Higher 1.1 mA supply current; ±80 mA output; 8 MHz GBW; same SOIC-8 footprint. | Optimized for fast-settling ADC drivers; lacks extended temperature qualification (–40°C to +125°C). | Select TSV912IDT for speed-critical data acquisition where industrial temp range is not required. |
Compared with AD8602ARZ and TSV912IDT, the OP250GS uniquely balances high output drive (±250 mA), ultra-low quiescent current (600 µA), and extended temperature operation - making it irreplaceable in battery-powered industrial and medical equipment requiring both power efficiency and robust load handling.
Availability
OP250GS is available at Aetrix Electronics and suitable for battery-powered instrumentation, remote sensors, and medical device designs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OP250GS 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 OP250GS belongs to the OP150/OP250/OP450 family - engineered specifically for single-supply, rail-to-rail signal conditioning in portable and industrial systems demanding low power, high output drive, and wide temperature resilience.
FAQ
What is the maximum capacitive load the OP250GS can drive stably?
The OP250GS is specified to remain stable with capacitive loads up to 500 pF without external compensation. This capability eliminates series isolation resistors when driving ADC inputs, long PCB traces, or piezoelectric transducers - confirmed in the manufacturer's General Description and Electrical Characteristics sections under "Capacitive Load Stability." The OP250GS maintains phase margin >75° under these conditions.
Does the OP250GS support true rail-to-rail input and output operation at 3 V supply?
Yes, the OP250GS supports rail-to-rail input common-mode range (0 V to VS) and rail-to-rail output swing (within 2 mV of V– and 10 mV of V+) at 3 V supply. Measured output voltage low (VOL) is 2 mV at 100 µA sink and 30 mV at 10 mA sink; output voltage high (VOH) is 2.95 V at 10 mA source - all verified across –40°C to +125°C per the OP250GS Electrical Characteristics table.
What is the input offset voltage specification for the OP250GS over temperature?
The OP250GS has a maximum input offset voltage of 5 mV over the full operating temperature range of –40°C to +125°C. This value is explicitly stated in the "ELECTRICAL CHARACTERISTICS" table under "Offset Voltage OP250/OP450" with condition "–40°C ≤ TA ≤ +125°C." The typical drift is 1.5 µV/°C, contributing minimally to total error in precision gain stages.
Is the OP250GS pin-compatible with other dual op-amps in SOIC-8 packages?
No documented pin compatibility exists between the OP250GS and generic dual op-amps such as LM358 or TL072. The OP250GS uses a nonstandard pinout: Pin 1 = –IN B, Pin 2 = OUT B, Pin 3 = +IN B, Pin 4 = V+, Pin 5 = OUT A, Pin 6 = –IN A, Pin 7 = +IN A, Pin 8 = V–. Substitution requires PCB layout revision - confirmed by the "PIN CONFIGURATIONS" diagram in the official preliminary datasheet.
What thermal resistance values apply to the OP250GS in SOIC-8 package?
The OP250GS in 8-lead SOIC (S suffix) package has a junction-to-ambient thermal resistance (θJA) of 158°C/W and junction-to-case (θJC) of 43°C/W, as published in the "PACKAGE TYPE" table. These values assume standard JEDEC 2-layer board mounting with recommended copper pour - critical for thermal design when delivering sustained ±250 mA output current.
OP250GS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 6.5V/µs
- Gain Bandwidth Product:
- 4 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 30 pA
- Voltage - Input Offset:
- 5 mV
- Current - Supply:
- 550µA (x2 Channels)
- Current - Output / Channel:
- 250 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 6 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
OP250GS FAQ
1.How can I place an order for OP250GS through Aetrix?
Please submit a Request for Quotation (RFQ) for OP250GS 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 OP250GS reliable?
The price and inventory of OP250GS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OP250GS is usually 5 days.
3.What payment methods are accepted for OP250GS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OP250GS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OP250GS?
OP250GS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OP250GS 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 OP250GS?
For technical support, including OP250GS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OP250GS requirements.
6.How does Aetrix verify that OP250GS is sourced from the original manufacturer or authorized distributors?
All OP250GS 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 OP250GS meets industry standards.
7.What is the process for return or replacement of OP250GS?
All OP250GS units undergo pre-shipment inspection (PSI). If there is an issue with OP250GS, 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 OP250GS part is unused and in its original packaging.
Return procedure for OP250GS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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