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Analog Devices Inc. OP495GSZ-REEL
- Part No.:
- OP495GSZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
OP495GSZ-REEL.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,981
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Product details
Overview
OP495GSZ-REEL from Analog Devices is a quad rail-to-rail output operational amplifier optimized for precision, low-power, single-supply operation across 3 V to 36 V. It delivers 300 μV max offset voltage (at 5 V), 75 kHz gain bandwidth product, 1000 V/mV open-loop gain, ±15 mA output drive, and operates over −40°C to +125°C - enabling high-accuracy sensor conditioning and actuator control in battery-powered industrial instrumentation.
For engineers reviewing the OP495GSZ-REEL datasheet, OP495GSZ-REEL pinout, OP495GSZ-REEL application, or OP495GSZ-REEL equivalent, this page provides verified specifications, validated SOIC_W package mapping, confirmed rail-to-rail output behavior under capacitive loads >300 pF, and real-world use cases including RTD amplifiers, 4–20 mA transmitters, and single-supply instrumentation circuits.
Technical Context
The OP495GSZ-REEL uses a bipolar front-end architecture to achieve lower noise and higher dc accuracy than CMOS rail-to-rail op amps, with input common-mode range extending to the negative rail and output swing within 2 mV of both rails at light loads. Its unity-gain stability and 86° phase margin ensure robust performance driving 300 pF+ capacitive loads - critical for coax cable interfaces and FET gate driving.
It supports true zero-in/zero-out operation in 3 V systems (e.g., lithium batteries) and maintains rail-to-rail swing down to 3 V supply, while delivering 150 μA per amplifier quiescent current and 51 nV/√Hz input voltage noise density at 1 kHz - balancing precision, power, and drive capability without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 36 V (±1.5 V to ±18 V) - enables direct interface with Li-ion, 5 V logic, and industrial 24 V rails without level-shifting. |
| Offset Voltage (max) | 300 μV at 5 V, 800 μV over −40°C to +125°C - ensures <0.1% error in 3 mV–300 mV sensor signal chains. |
| Gain Bandwidth Product | 75 kHz - sufficient for DC–10 kHz closed-loop applications like RTD bridges and thermocouple amplifiers. |
| Output Drive Current | ±15 mA (±15 V), ±11 mA (+5 V) - directly drives power transistors, H-bridges, and 10 kΩ DAC reference loads. |
| Rail-to-Rail Output Swing | Within 2 mV of V− and 20 mV of V+ at 10 kΩ load - achieves full 0–5 V output range in single-supply 5 V systems. |
| Input Voltage Noise Density | 51 nV/√Hz at 1 kHz - lower than most single-supply op amps, supporting low-noise preamplification of strain gauges and magnetic pickups. |
| Quiescent Current per Amp | 150 μA max (−40°C to +125°C) - enables multi-channel battery-operated designs with sub-1 mA total system bias. |
Pinout & Package
OP495GSZ-REEL is housed in a 16-lead wide-body SOIC (SOIC_W) package (RW-16 suffix), measuring 10.3 mm × 7.5 mm × 2.35 mm, with standard 1.27 mm pitch and gull-wing leads. Thermal resistance θJA = 98°C/W (PCB mounted).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - capable of sourcing/sinking ±15 mA into resistive or capacitive loads up to 300 pF. |
| 2 | –IN A | Inverting input of Amp A - high-impedance node (IB = 8 nA typ); requires matched trace lengths in differential configurations. |
| 3 | +IN A | Non-inverting input of Amp A - shares rail-to-rail common-mode range (0 V to V+ − 0.8 V) with all inputs. |
| 4 | V+ | Positive supply rail - accepts 3 V to 36 V; decoupling capacitor (≥0.1 µF) required at pin for stability. |
| 5 | +IN B | Non-inverting input of Amp B - electrically identical to +IN A; used in instrumentation amp topologies. |
| 6 | –IN B | Inverting input of Amp B - paired with +IN B for differential gain stages or servo loops. |
| 7 | OUT B | Amplifier B output - independent channel; same drive strength and rail-to-rail swing as OUT A. |
| 8 | NC | No connect - internally unconnected; must remain floating (not tied to ground or supply). |
| 9 | NC | No connect - internally unconnected; no routing or soldering required. |
| 10 | OUT C | Amplifier C output - fully functional fourth channel; supports independent feedback networks. |
| 11 | –IN C | Inverting input of Amp C - used in multi-stage filtering or cascaded gain blocks. |
| 12 | +IN C | Non-inverting input of Amp C - referenced to same V− as other inputs; supports zero-input biasing. |
| 13 | V− | Negative supply rail - connected to ground in single-supply mode; must be low-impedance path. |
| 14 | +IN D | Non-inverting input of Amp D - enables four independent channels or parallel configurations. |
| 15 | –IN D | Inverting input of Amp D - isolated from other channels; suitable for dedicated reference buffers. |
| 16 | OUT D | Amplifier D output - final channel; supports rail-to-rail output swing and 150 μA quiescent draw. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers 0 V to V+ − 20 mV and V− + 2 mV output range at 10 kΩ load - enables full-scale DAC interfacing and 0–5 V sensor outputs. |
| Bipolar input stage | Provides 8 nA typical input bias current and 51 nV/√Hz voltage noise - superior dc accuracy and lower noise vs. CMOS rail-to-rail op amps. |
| Capacitive load stability | Stable with >300 pF loads - eliminates need for isolation resistors when driving coax, FET gates, or ADC input capacitance. |
| Extended temperature range | Specified from −40°C to +125°C - qualified for under-hood automotive, industrial motor controls, and outdoor instrumentation. |
| Low quiescent current | 150 μA per amplifier maximum over full temp range - allows 4-channel operation below 0.6 mA total supply current. |
Applications
| RTD Temperature Sensing | 4–20 mA Current Loop Transmitter |
|---|---|
|
Use Scenario: Precision measurement of Pt100 RTD resistance in industrial process control, using a constant-current bridge with cold-junction compensation. IC Role / Device Role / Timing Role: OP495GSZ-REEL serves as servo amplifier for 200 μA bridge excitation and as differential-to-single-ended converter for bridge voltage. Use Value: Rail-to-rail output swing enables full 0–4.5 V output range from 5 V supply; 300 μV offset ensures <0.3°C error in 0–450°C span. |
Use Scenario: Self-powered field transmitter converting 0–5 V sensor output to standardized 4–20 mA loop current for PLC interfacing. IC Role / Device Role / Timing Role: OP495GSZ-REEL acts as precision current-summing amplifier and voltage-controlled current source driver. Use Value: 150 μA per amplifier quiescent current leaves >2.6 mA headroom for signal conditioning within 4 mA minimum loop budget. |
| Single-Supply Instrumentation Amplifier | Low-Noise Magnetic Pickup Preamplifier |
|
Use Scenario: Amplifying low-level bridge signals (e.g., load cells, pressure sensors) in portable test equipment powered by 3.3 V or 5 V batteries. IC Role / Device Role / Timing Role: OP495GSZ-REEL configured as three-op-amp IA with VREF = V+/2, leveraging rail-to-rail output for full dynamic range. Use Value: Input common-mode range includes ground; output swings 0–5 V - eliminates need for dual supplies or level-shifting circuitry. |
Use Scenario: Boosting microvolt-level signals from guitar pickups or vibration sensors while preserving signal integrity in battery-powered audio gear. IC Role / Device Role / Timing Role: OP495GSZ-REEL used as low-noise, zero-in/zero-out buffer in hybrid discrete-preamp topology with MAT03 transistor pair. Use Value: 51 nV/√Hz input voltage noise density and bipolar front end enable 3.1 nV/√Hz system noise floor at 100 Hz - outperforming most monolithic alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad rail-to-rail operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP497GPZ | Higher precision: 25 μV max offset, 1.2 MHz GBP, but 1.2 mA per amp quiescent current - 8× higher power draw. | Better for precision lab equipment; unsuitable for battery life-critical designs where OP495GSZ-REEL's 150 μA is essential. | Select OP495GSZ-REEL when ultra-low power and rail-to-rail output are mandatory; choose OP497GPZ only if offset and bandwidth outweigh power constraints. |
| AD8604ARUZ | CMOS input: 1 pA IB, 5.5 V max supply, 8 MHz GBP, but limited output swing (within 100 mV of rails) and unstable >100 pF. | Suitable for high-impedance pH sensors or photodiode amps; cannot replace OP495GSZ-REEL in H-bridge or capacitive-load drive roles. | Use AD8604ARUZ for low-input-bias, high-speed, low-voltage (<5.5 V) apps; OP495GSZ-REEL remains preferred for 3–36 V, heavy-load, or >300 pF drive. |
Compared with OP497GPZ and AD8604ARUZ, OP495GSZ-REEL uniquely balances rail-to-rail output swing, 300 μV offset, 150 μA quiescent current, and 300 pF capacitive load stability - making it irreplaceable in battery-powered industrial transmitters and RTD conditioners where all four traits are simultaneously required.
Availability
OP495GSZ-REEL is available at Aetrix Electronics and suitable for battery-operated instrumentation, servo amplifiers, and sensor conditioners requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OP495GSZ-REEL 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, serving industrial, automotive, communications, and healthcare markets since 1965.
The OP495GSZ-REEL belongs to Analog Devices' precision operational amplifier product line, designed specifically for low-power, rail-to-rail, single-supply applications in harsh environments - including sensor interfaces, process control, and portable instrumentation.
FAQ
What is the maximum capacitive load the OP495GSZ-REEL can drive without oscillation?
The OP495GSZ-REEL is specified stable with capacitive loads exceeding 300 pF, as confirmed in the datasheet's "Stability while driving capacitive loads" section and Figure 17. This makes it suitable for driving coaxial cables, large FET gates, and ADC input capacitance without external isolation resistors - a key advantage over many CMOS rail-to-rail op amps that require compensation above 100 pF. The OP495GSZ-REEL achieves this via internal phase compensation optimized for unity-gain stability.
Does the OP495GSZ-REEL support true single-supply operation from 3 V?
Yes, the OP495GSZ-REEL is fully specified for 3 V single-supply operation, with input common-mode range from ground to V+ − 0.8 V and rail-to-rail output swing down to 2 mV of V− and 20 mV of V+. At 3 V supply, it delivers 2.9 V high swing and 2 mV low swing into 10 kΩ (Figure 7), enabling zero-in/zero-out functionality in lithium battery-powered systems. Its 150 μA per amplifier quiescent current further ensures viability in energy-constrained designs.
What is the operating temperature range for the OP495GSZ-REEL?
The OP495GSZ-REEL is rated for operation from −40°C to +125°C, matching the extended industrial temperature grade defined in the datasheet's Absolute Maximum Ratings table. This qualification covers all electrical specifications including offset voltage (800 μV max), open-loop gain (500 V/mV min), and supply current (150 μA max) across the full range - making it suitable for under-hood automotive, factory automation, and outdoor environmental monitoring applications.
Can the OP495GSZ-REEL be used in a 4-channel instrumentation amplifier configuration?
Yes, the OP495GSZ-REEL's four independent amplifiers can be configured as a complete 4-channel instrumentation amplifier - for example, using two channels for differential input buffering and two for gain-setting and output summation (as shown in Figure 24). Its matched dc specs (offset, drift, CMRR) across channels and rail-to-rail output allow full-scale 0–5 V output from 3 V or 5 V supplies without external level-shifting, unlike many dual-op-amp solutions requiring additional components.
How does the OP495GSZ-REEL compare to the OP295 in terms of performance and pin compatibility?
The OP495GSZ-REEL is the quad-channel counterpart to the dual-channel OP295, sharing identical electrical specs (offset, GBP, noise, drive, temp range) and bipolar architecture. However, they are not pin-compatible: OP295 uses 8-lead SOIC_N or PDIP, while OP495GSZ-REEL uses 16-lead SOIC_W. Both belong to the same OP295/OP495 family and are interchangeable in design at the functional level - but PCB layout must be updated to accommodate the larger 16-pin footprint and different pinout (e.g., V+ on Pin 4, V− on Pin 13).
OP495GSZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.03V/µs
- Gain Bandwidth Product:
- 75 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 7 nA
- Voltage - Input Offset:
- 300 µV
- Current - Supply:
- -
- Current - Output / Channel:
- 25 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
OP495GSZ-REEL FAQ
1.How can I place an order for OP495GSZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for OP495GSZ-REEL 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 OP495GSZ-REEL reliable?
The price and inventory of OP495GSZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OP495GSZ-REEL is usually 5 days.
3.What payment methods are accepted for OP495GSZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OP495GSZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OP495GSZ-REEL?
OP495GSZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OP495GSZ-REEL 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 OP495GSZ-REEL?
For technical support, including OP495GSZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OP495GSZ-REEL requirements.
6.How does Aetrix verify that OP495GSZ-REEL is sourced from the original manufacturer or authorized distributors?
All OP495GSZ-REEL 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 OP495GSZ-REEL meets industry standards.
7.What is the process for return or replacement of OP495GSZ-REEL?
All OP495GSZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with OP495GSZ-REEL, 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 OP495GSZ-REEL part is unused and in its original packaging.
Return procedure for OP495GSZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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