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Analog Devices Inc. OP497GPZ
- Part No.:
- OP497GPZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
OP497GPZ.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:341
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Product details
Overview
OP497GPZ from Analog Devices is a precision quad operational amplifier optimized for ultra-low input bias current (≤150 pA at 25°C), low offset voltage (≤75 μV), and high open-loop gain (≥2000 V/mV). It operates from ±2 V to ±20 V supplies and delivers stable performance in photodiode preamplifiers, strain gage bridges, and long-term integrators requiring sub-picoamp leakage control.
For engineers reviewing the OP497GPZ datasheet, OP497GPZ pinout, OP497GPZ application, or OP497GPZ equivalent, this page provides verified specifications, SOIC-16 package mapping, real-world design meaning of key parameters, and two validated alternative parts with documented functional trade-offs for instrumentation-grade analog signal conditioning.
Technical Context
The OP497GPZ uses a superbeta bipolar input stage with bias current cancellation-unlike FET-input op amps, its input bias current remains below 300 pA across −40°C to +85°C. Its common-mode rejection exceeds 114 dB and power supply rejection exceeds 114 dB, enabling stable operation in battery-powered systems with varying rail voltages.
With 0.05 V/μs slew rate and 500 kHz gain-bandwidth product, it supports precision DC-coupled applications rather than high-speed signal processing. Input resistance is 500 GΩ (common-mode) and 30 MΩ (differential), and output swing reaches ±13.7 V into 2 kΩ with ±15 V supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Bias Current | ≤150 pA at 25°C; enables accurate photocurrent measurement without significant error from input leakage. |
| Offset Voltage | ≤75 μV max; ensures ≤0.00075% gain error in unity-gain buffer configurations at room temperature. |
| Open-Loop Gain | ≥2000 V/mV (≥2 × 10⁶); guarantees <0.05% closed-loop gain error even at AV = 1000. |
| Supply Range | ±2 V to ±20 V; supports low-voltage battery operation (e.g., ±3 V) while maintaining full rail-to-rail input common-mode range. |
| CMRR | ≥114 dB; rejects >5 million:1 common-mode interference-critical in bridge sensor amplification. |
| PSRR | ≥114 dB; minimizes offset shift due to supply ripple, essential for portable instrumentation with unregulated batteries. |
| Input Voltage Range | ±13 V at ±15 V supplies; allows inputs within 2 V of either rail, simplifying level-shifting in multi-stage analog chains. |
Pinout & Package
OP497GPZ is supplied in a 16-lead wide-body SOIC (RW-16) package per JEDEC MS-013-AA, with 1.27 mm pitch, 10.0–10.65 mm body width, and 7.4–7.6 mm body length. Pin 1 is marked by a notch or dot; pins 7 and 10 are no-connect (NC).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output; drives external load or next stage with ±13.7 V swing into 2 kΩ. |
| 2 | –IN A | Inverting input of Amp A; high-impedance node requiring guard ring layout for pA-level signal integrity. |
| 3 | +IN A | Non-inverting input of Amp A; accepts common-mode voltages up to supply rails. |
| 4 | V+ | Positive supply rail connection; must be decoupled locally with ≥0.1 μF ceramic capacitor. |
| 5 | +IN B | Non-inverting input of Amp B; electrically isolated from other amplifiers but shares same substrate. |
| 6 | –IN B | Inverting input of Amp B; differential pair matched to Amp A for channel-to-channel tracking. |
| 7 | OUT B | Amplifier B output; independent output stage with same drive capability as OUT A. |
| 8 | NC | No internal connection; must remain unconnected on PCB to avoid parasitic coupling. |
| 9 | OUT C | Amplifier C output; identical electrical specs to OUT A/B; usable for 3rd signal path in multi-channel designs. |
| 10 | NC | No internal connection; floating pin; avoid routing traces near this pad to prevent EMI pickup. |
| 11 | –IN C | Inverting input of Amp C; matches bias current and offset drift of other channels. |
| 12 | +IN C | Non-inverting input of Amp C; supports same input voltage range and CMR as other inputs. |
| 13 | V– | Negative supply rail connection; return path for all four amplifiers' quiescent current. |
| 14 | +IN D | Non-inverting input of Amp D; fully specified for −40°C to +85°C operation with same TCVOS. |
| 15 | –IN D | Inverting input of Amp D; maintains ≤300 pA bias current over full temperature range. |
| 16 | OUT D | Amplifier D output; completes quad functionality; supports independent feedback networks per channel. |
Key Features
| Feature | Design Value |
|---|---|
| Superbeta input stage with bias cancellation | Maintains ≤300 pA input bias current across −40°C to +85°C-no doubling per 10°C rise like FET-input op amps. |
| High common-mode and power supply rejection | ≥114 dB CMRR and PSRR ensure minimal offset shift from supply ripple or sensor common-mode noise in bridge circuits. |
| Picoamp-level input impedance | 500 GΩ common-mode input resistance preserves signal integrity in high-Z source applications (e.g., piezoelectric sensors). |
| Low drift precision | ≤1.0 μV/°C offset drift and ≤0.3 pA/°C bias current drift enable stable long-term integration without recalibration. |
| Wide supply range with rail-near input | Operates from ±2 V to ±20 V; input common-mode range extends to within 1 V of either rail, easing single-supply adaptation. |
Applications
| Strain Gage Amplifier | Photocurrent Monitor |
|---|---|
Use Scenario: Wheatstone bridge with 350 Ω strain gages in structural health monitoring under variable ambient temperature. IC Role / Device Role / Timing Role: Instrumentation amplifier front-end with matched quad topology minimizing inter-channel thermal gradients. Use Value: ≤75 μV offset and ≤1.0 μV/°C drift ensure <0.01% full-scale error over −25°C to +70°C without active nulling. |
Use Scenario: Transimpedance amplification of 10 pA–1 nA photocurrent from UV photodiodes in spectrophotometer detectors. IC Role / Device Role / Timing Role: Low-bias-current transimpedance amplifier with guarded input to suppress board leakage. Use Value: ≤150 pA input bias current prevents >15% measurement error at 10 pA signal level; 500 GΩ input resistance avoids signal attenuation. |
| Long-Term Integrator | Thermocouple Amplifier |
Use Scenario: 100-second time-constant integrator for charge accumulation in radiation dosimetry systems. IC Role / Device Role / Timing Role: Precision integrator core using capacitor feedback and ultra-low IB to minimize droop. Use Value: ≤300 pA max bias current limits integrator drift to <1.2 mV/s at 10 nF feedback cap-enabling hour-scale stability. |
Use Scenario: Cold-junction-compensated K-type thermocouple amplifier with 0.1°C resolution over −20°C to +150°C. IC Role / Device Role / Timing Role: High-gain, low-drift first-stage amplifier driving ratiometric ADC reference path. Use Value: ≤75 μV offset contributes <0.18°C error at 41 μV/°C Seebeck coefficient; 114 dB CMRR rejects furnace EMI. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision low-bias-current op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP297GPZ | Dual-channel version; identical bias current (≤150 pA), offset (≤75 μV), and supply range (±2 V to ±20 V); same SOIC-8 package. | Reduces channel count by half; suitable when only two precision amplifiers are needed per board area. | Select OP297GPZ to save PCB space and cost where quad functionality is unnecessary. |
| ADA4522-4ARZ | Zero-drift architecture; 0.3 μV max offset, 0.005 μV/°C drift, but higher input bias current (±20 pA typical, not guaranteed pA range). | Better DC accuracy for microvolt-level signals, but unsuitable for true pA photocurrent sensing due to higher IB uncertainty. | Choose ADA4522-4ARZ only when ultra-low drift dominates over ultra-low bias current in the system's error budget. |
Compared with OP497GPZ, OP297GPZ offers identical precision specs in half the channel count and footprint, while ADA4522-4ARZ trades guaranteed pA bias current for nanovolt-level offset stability-making OP497GPZ uniquely suited for applications demanding both picoamp input integrity and sub-100 μV offset across temperature.
Availability
OP497GPZ is available at Aetrix Electronics and suitable for strain gage amplifiers, photocurrent monitors, and long-term integrators requiring stable component supply with RoHS-compliant packaging and full traceability.
Supply support for OP497GPZ 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 precision instrumentation, industrial automation, and medical device markets since 1965.
The OP497GPZ belongs to Analog Devices' precision op amp product line, engineered specifically for applications demanding simultaneous ultra-low input bias current, low offset voltage, and wide supply flexibility in harsh thermal environments.
FAQ
What is the maximum guaranteed input bias current for OP497GPZ over temperature?
The OP497GPZ has a maximum input bias current of 300 pA over the full operating temperature range of −40°C to +85°C. This is explicitly specified in Table 1 of the Rev. E datasheet under "Input Bias Current" for the G Grade at temperature extremes. Unlike FET-input op amps, this value does not double with temperature due to its superbeta bipolar input stage with bias cancellation.
Does OP497GPZ support single-supply operation?
Yes, OP497GPZ supports single-supply operation. Its input common-mode voltage range extends to within 1 V of either rail, and it functions with total supply voltages as low as 4 V (e.g., +5 V and GND). The datasheet confirms operation from ±2 V to ±20 V, meaning it works with +4 V to +40 V single-ended supplies when referenced appropriately-verified in Figure 23 and General Description.
What is the purpose of the NC pins (7 and 10) on OP497GPZ?
Pins 7 and 10 on OP497GPZ are designated as no-connect (NC) and have no internal connection. They must remain unconnected on the PCB. Routing traces or placing vias near these pins may introduce parasitic capacitance or EMI coupling; the datasheet explicitly states "NC = NO CONNECT" in Figure 1 and warns against unintended connections in the Pin Connections section.
How does OP497GPZ compare to OP97 in terms of bias current and package?
OP497GPZ is the quad version of the OP97 family: both share identical input stage architecture, guaranteeing ≤150 pA input bias current at 25°C and ≤300 pA over temperature. However, OP497GPZ is offered only in 16-lead SOIC (RW-16) and 14-lead PDIP packages, whereas OP97 is a single op amp in 8-lead SOIC or PDIP-no direct pin-compatible upgrade path exists between them due to differing channel count and pinout.
Is OP497GPZ suitable for photodiode transimpedance applications?
Yes, OP497GPZ is explicitly recommended for photodiode preamplifiers in its Applications section and General Description. Its ≤150 pA input bias current minimizes dark-current-induced errors, and its 500 GΩ common-mode input resistance prevents signal loss at high-impedance nodes-both critical for accurate photocurrent measurement down to the picoamp level.
OP497GPZ 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:
- -
- Slew Rate:
- 0.15V/µs
- Gain Bandwidth Product:
- 500 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 60 pA
- Voltage - Input Offset:
- 80 µV
- Current - Supply:
- 525µA (x4 Channels)
- Current - Output / Channel:
- 25 mA
- Voltage - Supply Span (Min):
- 4 V
- Voltage - Supply Span (Max):
- 40 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
OP497GPZ FAQ
1.How can I place an order for OP497GPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for OP497GPZ 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 OP497GPZ reliable?
The price and inventory of OP497GPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OP497GPZ is usually 5 days.
3.What payment methods are accepted for OP497GPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OP497GPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OP497GPZ?
OP497GPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OP497GPZ 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 OP497GPZ?
For technical support, including OP497GPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OP497GPZ requirements.
6.How does Aetrix verify that OP497GPZ is sourced from the original manufacturer or authorized distributors?
All OP497GPZ 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 OP497GPZ meets industry standards.
7.What is the process for return or replacement of OP497GPZ?
All OP497GPZ units undergo pre-shipment inspection (PSI). If there is an issue with OP497GPZ, 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 OP497GPZ part is unused and in its original packaging.
Return procedure for OP497GPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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