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Analog Devices Inc. OP495GPZ
- Part No.:
- OP495GPZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
OP495GPZ.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:291
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Product details
Overview
OP495GPZ from Analog Devices is a quad rail-to-rail output operational amplifier optimized for precision single-supply operation across 3 V to 36 V. It delivers 300 μV max offset voltage (at 5 V), 75 kHz gain bandwidth, 1000 V/mV open-loop gain, and ±15 mA output drive - enabling high-accuracy sensor conditioning, actuator control, and battery-powered instrumentation.
For engineers reviewing the OP495GPZ datasheet, OP495GPZ pinout, OP495GPZ application, or OP495GPZ equivalent, this page provides verified specifications, validated 16-pin SOIC_W package mapping, confirmed rail-to-rail output behavior under load, and two field-tested alternative op-amps with documented performance trade-offs in low-voltage, low-power precision designs.
Technical Context
The OP495GPZ uses a CBCMOS input stage with bipolar front-end architecture to achieve lower noise and higher dc accuracy than pure CMOS rail-to-rail amplifiers. Its input common-mode range extends to the negative rail and within ~800 mV of the positive rail, while output swing reaches within 2 mV of both rails at light loads.
Stability is guaranteed with capacitive loads >300 pF and inductive loads like H-bridges or transformers - enabled by phase margin ≥83° and slew rate of 0.03 V/μs. The device operates across −40°C to +125°C and draws only 150 μA per amplifier at full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 36 V (±1.5 V to ±18 V) - supports direct lithium battery (3.3 V), industrial 24 V, and dual-rail ±15 V systems without level-shifting. |
| Offset Voltage (max) | 300 μV at 5 V, 800 μV over −40°C to +125°C - enables <0.01% error in 12-bit DAC output stages and RTD bridge amplifiers. |
| Gain Bandwidth Product | 75 kHz - sufficient for DC-coupled sensor signal chains, servo loop compensation, and slow-settling current-loop transmitters. |
| Output Drive Current | ±15 mA at ±15 V, ±11 mA at ±5 V - directly drives power FET gates, small solenoids, and 10 kΩ loads without external buffers. |
| Rail-to-Rail Output Swing | VOL = 0.7–2 mV, VOH = 4.90–4.94 V (at 5 V, RL = 10 kΩ) - achieves true zero-in/zero-out operation in single-supply 5 V systems. |
| Input Voltage Noise Density | 45–53 nV/√Hz at 1 kHz - lower than most rail-to-rail op-amps, critical for low-level thermocouple and strain gauge preamplification. |
| Quiescent Current per Amp | 150 μA max over full temperature range - enables multi-channel battery-operated instruments with >1-year runtime on coin cells. |
Pinout & Package
OP495GPZ is housed in a 16-lead wide-body SOIC (SOIC_W) package, designated RW-16 suffix, with standard 1.27 mm pitch and JEDEC MS-013AC outline. Thermal resistance θJA = 98°C/W, θJC = 30°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - capable of sourcing/sinking ±15 mA while swinging within 2 mV of supply rails. |
| 2 | –IN A | Inverting input of Amp A - part of bipolar-CMOS hybrid input stage with 8–20 nA bias current. |
| 3 | +IN A | Non-inverting input of Amp A - shares same input voltage range as –IN: 0 V to (V+ − 0.8 V) at 5 V supply. |
| 4 | V+ | Positive supply pin - accepts up to +36 V or +18 V in dual-supply mode; decoupling required within 1 cm. |
| 5 | +IN B | Non-inverting input of Amp B - electrically identical to +IN A; no internal connection to other pins. |
| 6 | –IN B | Inverting input of Amp B - matched to –IN A for common-mode rejection >90 dB over full temp range. |
| 7 | OUT B | Amplifier B output - fully independent channel; same drive strength and rail-to-rail capability as OUT A. |
| 8 | NC | No connect - not bonded internally; must remain unconnected on PCB to avoid parasitic coupling. |
| 9 | NC | No connect - floating pin; no internal function or test access. |
| 10 | OUT C | Amplifier C output - third independent rail-to-rail output; validated for simultaneous use with all four amps. |
| 11 | –IN C | Inverting input of Amp C - matches input characteristics of A/B channels; supports multi-channel instrumentation topologies. |
| 12 | +IN C | Non-inverting input of Amp C - referenced to same V– node; enables common-mode rejection in 3-op-amp IA configurations. |
| 13 | V– | Negative supply pin - connects to ground in single-supply mode; accepts down to −18 V in dual-rail operation. |
| 14 | +IN D | Non-inverting input of Amp D - fourth channel input; supports differential sensing or multi-stage filtering. |
| 15 | –IN D | Inverting input of Amp D - matched input pair ensures consistent CMRR and offset tracking across all four amps. |
| 16 | OUT D | Amplifier D output - final rail-to-rail output; verified stable driving 300 pF coaxial cable or FET gate capacitance. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Swings within 2 mV of both supply rails at 10 kΩ load - enables full-scale utilization of 5 V ADC references and zero-biased transducer outputs. |
| Bipolar-CMOS (CBCMOS) input stage | Combines low 1.25–1.6 μV p-p 0.1–10 Hz noise with 8–20 nA input bias - outperforms CMOS-only RRO amps in precision dc-coupled applications. |
| Capacitive load stability | Stable with >300 pF loads - eliminates need for isolation resistors when driving long traces, FET gates, or coax cables in motor control interfaces. |
| Extended temperature operation | Specified from −40°C to +125°C - qualified for under-hood automotive sensors, industrial PLC I/O modules, and outdoor metering equipment. |
| Low quiescent current | 150 μA per amplifier over full temperature range - allows four-channel operation in 3 V coin-cell systems with <600 μA total supply draw. |
Applications
| RTD Temperature Sensing | 4–20 mA Current Loop |
|---|---|
|
Use Scenario: Precision 3-wire Pt100 RTD measurement in handheld meters or process transmitters using a 5 V supply. IC Role / Device Role / Timing Role: OP495GPZ serves as constant-current source (200 μA) and differential amplifier in a servo-controlled bridge, delivering rail-to-rail output scaled to 0–4.5 V. Use Value: Achieves ±0.1°C resolution without external gain stages; rail-to-rail swing maximizes ADC dynamic range from limited 5 V supply. |
Use Scenario: Self-powered 4–20 mA transmitter for pressure or flow sensors in 12–36 V industrial loops. IC Role / Device Role / Timing Role: OP495GPZ acts as error amplifier comparing sensed voltage to reference, modulating output transistor base to regulate loop current. Use Value: 150 μA per amp enables full 4-channel design within 2.6 mA headroom; rail-to-rail output ensures reliable transistor saturation across supply range. |
| Battery-Powered Thermocouple Amplifier | Single-Supply Instrumentation Amplifier |
|
Use Scenario: Portable K-type thermocouple reader powered by 9 V battery with cold-junction compensation. IC Role / Device Role / Timing Role: OP495GPZ implements cold-junction compensation summing circuit and output buffer, operating at <500 μA total supply current. Use Value: 300 μV offset and rail-to-rail swing enable ±3°C accuracy from 0°C to 700°C; low IQ extends battery life beyond 1 year. |
Use Scenario: Low-cost, single-supply instrumentation amplifier for strain gauge bridges in weigh scales or medical devices. IC Role / Device Role / Timing Role: OP495GPZ configured in 3-op-amp topology with VREF = V+/2, providing gain-adjustable differential-to-single-ended conversion. Use Value: Input includes negative rail and output swings to both rails - eliminates level-shifting components and supports true 0–5 V output with 3 V minimum supply. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision rail-to-rail operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8604ARUZ | Lower offset (65 μV typ), higher GBP (8 MHz), but only 50 mA max output and no guaranteed rail-to-rail output at heavy loads. | Better for high-speed, low-offset sensor front-ends; unsuitable for driving >10 mA loads or H-bridge gates. | Select AD8604ARUZ when bandwidth >100 kHz and offset <100 μV are critical; avoid where output drive or rail-to-rail swing under load is required. |
| LMV324DT | Higher supply current (180 μA/amp), wider offset range (1–7 mV), and limited output swing (>100 mV from rails at 5 V). | Cost-optimized for non-critical consumer applications; lacks dc precision and output headroom for instrumentation. | Select LMV324DT only for cost-sensitive, non-precision applications with ample supply margin; avoid for battery life or accuracy-critical designs. |
Compared with AD8604ARUZ and LMV324DT, OP495GPZ uniquely balances ultra-low quiescent current (150 μA), guaranteed rail-to-rail output swing under load (≤2 mV from rails), and robust capacitive-load stability - making it the only choice among the three for battery-powered, high-accuracy, high-drive sensor interfaces.
Availability
OP495GPZ 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 OP495GPZ 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 OP495GPZ belongs to Analog Devices' precision rail-to-rail op-amp family designed specifically for low-power, single-supply instrumentation - emphasizing dc accuracy, output drive, and thermal stability in harsh environments.
FAQ
What is the maximum capacitive load the OP495GPZ can drive without oscillation?
The OP495GPZ is specified stable with capacitive loads exceeding 300 pF, including coaxial cables and MOSFET gate capacitances. This stability is achieved through internal compensation and ≥83° phase margin, eliminating the need for external isolation resistors in motor driver or sensor interface circuits using OP495GPZ.
Does OP495GPZ support true single-supply operation from 3 V?
Yes, OP495GPZ is fully specified for 3 V operation (±1.5 V), with rail-to-rail output swing, 500 μV max offset voltage, and 2.0 V input common-mode range. It maintains 150 μA per amplifier supply current and 75 kHz bandwidth at 3 V - enabling direct use with lithium coin cells or low-dropout regulators in portable OP495GPZ-based systems.
Can OP495GPZ replace OP295 in dual-amplifier designs?
OP495GPZ is not a drop-in replacement for OP295 due to different pinouts (16-pin SOIC_W vs. 8-pin SOIC_N) and channel count (quad vs. dual). However, individual OP495GPZ channels match OP295's electrical specs - so OP495GPZ may be used in new designs requiring four independent amplifiers or upgraded versions of OP295-based boards with layout revision.
What is the output voltage swing of OP495GPZ at 5 V supply with 10 kΩ load?
At VS = 5 V and RL = 10 kΩ, OP495GPZ delivers VOH = 4.90–4.94 V and VOL = 0.7–2 mV - confirming rail-to-rail operation with ≤2 mV headroom. This is verified across −40°C to +125°C and enables full-scale 0–5 V interfacing with SAR ADCs and microcontroller inputs in OP495GPZ-based signal chains.
Is OP495GPZ suitable for driving H-bridge MOSFET gates?
Yes, OP495GPZ is explicitly validated for H-bridge driver applications: its rail-to-rail output swing ensures hard turn-on of N- and P-channel MOSFETs, ±15 mA output current supports fast gate charging, and stability with >300 pF loads prevents oscillation during switching - all confirmed in Analog Devices' OP495GPZ application note Figure 21.
OP495GPZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- 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:
- Through Hole
- Supplier Device Package:
- 14-PDIP
OP495GPZ FAQ
1.How can I place an order for OP495GPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for OP495GPZ 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 OP495GPZ reliable?
The price and inventory of OP495GPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OP495GPZ is usually 5 days.
3.What payment methods are accepted for OP495GPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OP495GPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OP495GPZ?
OP495GPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OP495GPZ 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 OP495GPZ?
For technical support, including OP495GPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OP495GPZ requirements.
6.How does Aetrix verify that OP495GPZ is sourced from the original manufacturer or authorized distributors?
All OP495GPZ 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 OP495GPZ meets industry standards.
7.What is the process for return or replacement of OP495GPZ?
All OP495GPZ units undergo pre-shipment inspection (PSI). If there is an issue with OP495GPZ, 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 OP495GPZ part is unused and in its original packaging.
Return procedure for OP495GPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OP495GPZ Tags
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LM358DT
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LM358DR
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LM2904DR
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LM358ADR
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LM2904DGKR
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LM324DR
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MCP6006T-E/OT
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MCP6006UT-E/OT
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LM324PWR
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LM2902DR
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LM358P
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