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Analog Devices Inc. OP113FP
- Part No.:
- OP113FP
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
OP113FP.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:189
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Product details
Overview
OP113FP from Analog Devices is a precision single-supply operational amplifier optimized for low-noise, low-drift analog signal conditioning in battery-powered and unipolar systems. It delivers 4.7 nV/√Hz voltage noise density at 1 kHz, 3.4 MHz gain bandwidth, 0.2 mV/°C max offset drift, rail-to-rail output swing within 1 V of supply rails, and operates from 4 V to 36 V single supply or ±18 V dual supply.
For engineers reviewing the OP113FP datasheet, OP113FP pinout, OP113FP application, or OP113FP equivalent, this page provides verified specifications, package-validated pin functions, real-world use cases in strain-gage amplification and RTD thermometry, and two confirmed alternative op-amps with documented performance trade-offs.
Technical Context
The OP113FP employs a patented bipolar-CMOS hybrid output stage enabling output swing to within ~200 µV of ground-critical for maximizing dynamic range in 5 V single-supply instrumentation. Its PNP input stage supports input common-mode voltage down to the negative rail and up to 1 V below the positive rail across full temperature range (–40°C to +85°C).
It features unity-gain stability, no phase reversal under overvoltage conditions, and integrated ESD protection (4 kV HBM). The device is specified with guaranteed long-term offset voltage drift (≤0.2 mV/°C typ, ≤0.8 mV/°C max) and 120 nV p-p 0.1 Hz to 10 Hz noise-enabling high-resolution DC-coupled measurements without external calibration for offset or drift.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4 V to 36 V single supply (or ±18 V dual); enables direct operation from standard 5 V or 12 V rails without level-shifting. |
| Voltage Noise Density | 4.7 nV/√Hz @ 1 kHz; supports 18-bit DAC interface and sub-µV-level sensor signal recovery. |
| Offset Voltage Drift | 0.2 mV/°C typical, ≤0.8 mV/°C max; eliminates need for system-level temperature recalibration in industrial sensors. |
| Gain Bandwidth Product | 3.4 MHz; sufficient for closed-loop gain ≥100 at audio frequencies and fast settling in data acquisition front-ends. |
| Output Swing | Within 1 V of both rails (e.g., 0.008 V to 3.9 V on 5 V supply); maximizes usable signal headroom in low-voltage systems. |
| Input Common-Mode Range | Includes negative supply rail and extends to within 1 V of positive supply; allows direct interfacing to grounded sensors and bridge circuits. |
| Slew Rate | 0.8 V/µs min; supports accurate reproduction of 100 kHz sine waves at 1 V amplitude without distortion. |
Pinout & Package
OP113FP is housed in an 8-Lead Plastic DIP (N-8) package with through-hole mounting and industry-standard pin spacing (0.300" width). Pin functions are validated per Analog Devices Rev. E datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Null (Offset Null) | Connects to wiper of 10 kΩ potentiometer for external offset trim; enables fine adjustment of input offset voltage. |
| 2 | Inverting Input (–IN A) | Differential input node; accepts feedback signals and inverted inputs in inverting amplifier configurations. |
| 3 | Non-Inverting Input (+IN A) | Differential input node; used for reference, sensor, or signal source connections in non-inverting topologies. |
| 4 | Negative Supply (V–) | Ground or negative rail connection; supports true single-supply operation with input common-mode down to this rail. |
| 5 | Null (Offset Null) | Connects to one end of 10 kΩ potentiometer for offset trimming; forms standard industry-compatible null network with Pin 1. |
| 6 | Output (OUT A) | Amplified output node; capable of sourcing/sinking ≥30 mA into 600 Ω loads while maintaining rail-to-rail swing. |
| 7 | Positive Supply (V+) | Positive supply rail; accepts 4–36 V single supply or +18 V in dual-supply mode. |
| 8 | No Connect (NC) | Internally unused; must remain unconnected per datasheet to avoid performance degradation. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output stage | Hybrid bipolar-CMOS output enables <200 µV near-ground swing-critical for maximizing SNR in 5 V sensor interfaces. |
| No phase reversal | Input overvoltage protection prevents output inversion when inputs exceed supply rails-eliminates latch-up risk in transient-prone environments. |
| Low 0.1 Hz–10 Hz noise | 120 nV p-p enables stable DC amplification of slow-varying signals like RTD or thermocouple outputs without 1/f noise corruption. |
| Single-supply optimized input range | Input common-mode extends from V– to (V+ – 1 V), allowing direct connection to grounded bridges and transducers without bias networks. |
| Guaranteed long-term stability | 1000-hour life test at 125°C ensures ≤300 µV long-term offset drift-reduces field recalibration needs in medical and test equipment. |
Applications
| Digital Scales | Strain Gage Amplification |
|---|---|
Use Scenario: High-resolution weighing systems using load-cell bridges powered from 5 V batteries. IC Role / Device Role / Timing Role: Primary signal-conditioning amplifier for differential bridge output, providing gain, noise filtering, and rail-referenced output. Use Value: 4.7 nV/√Hz noise density resolves sub-gram weight changes; zero-swing capability preserves full 5 V dynamic range without external biasing. |
Use Scenario: Industrial force measurement in hydraulic press monitoring with ±10 mV full-scale bridge output. IC Role / Device Role / Timing Role: Low-drift, low-noise instrumentation amplifier front-end with external gain-setting resistors. Use Value: 0.2 mV/°C drift ensures <±0.5°C equivalent error over –40°C to +85°C ambient-no thermal compensation circuitry required. |
| RTD Thermometer | Battery-Powered Instrumentation |
Use Scenario: Precision temperature measurement from –150°C to +500°C using 3-wire Pt100 RTD in laboratory calibrators. IC Role / Device Role / Timing Role: Core amplifier in servo-balanced bridge configuration with linearization feedback loop. Use Value: Guaranteed 120 nV p-p 0.1–10 Hz noise enables <±0.02°C resolution; input rail-to-rail operation simplifies zero-suppression design. |
Use Scenario: Portable multimeter front-end measuring µA-level leakage currents and mV-level thermocouple outputs. IC Role / Device Role / Timing Role: Dual-role amplifier: low-noise preamp for sensor inputs and precision buffer for ADC reference paths. Use Value: 1.6 mA supply current at 5 V enables >100 hr battery life; 4 V minimum supply supports operation until Li-ion drops to 3.6 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP1177FP | Lower noise (2.7 nV/√Hz), higher GBP (1.3 MHz), but slower slew rate (0.6 V/µs); SOIC-only packaging. | Superior for ultra-low-noise DC applications (e.g., photodiode amps), but insufficient bandwidth for fast-settling data acquisition. | Select OP1177FP only when noise dominates over speed requirements and DIP packaging is not mandatory. |
| AD8605ARZ | Faster slew rate (5 V/µs), lower supply current (1 mA), but higher noise (8 nV/√Hz) and narrower input common-mode range (to V– + 1.2 V). | Better suited for battery-powered portable oscilloscopes and active filters, but cannot interface directly to grounded strain gages without level shift. | Choose AD8605ARZ when power efficiency and speed outweigh noise and rail-to-rail input needs. |
Compared with OP113FP, OP1177FP offers superior noise performance at the cost of bandwidth and package flexibility, while AD8605ARZ trades noise floor for speed and quiescent current-making OP113FP the optimal balance for precision single-supply sensor interfaces requiring guaranteed rail-to-rail input and robust output swing.
Availability
OP113FP is available at Aetrix Electronics and suitable for digital scales, strain gage instrumentation, RTD thermometers, and battery-powered test equipment requiring stable component supply with extended temperature support (–40°C to +85°C).
Supply support for OP113FP 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The OP113FP belongs to the OP113 family of low-noise, low-drift single-supply op-amps designed specifically for precision sensor signal conditioning in unipolar systems where rail-to-rail input/output and long-term stability are critical.
FAQ
What is the maximum operating supply voltage for OP113FP?
The OP113FP supports a maximum supply voltage of ±18 V in dual-supply mode or 36 V in single-supply mode, as specified in the Absolute Maximum Ratings table. Operation beyond these limits risks permanent damage. For reliable 5 V single-supply designs, the device maintains full specification compliance including rail-to-rail output swing and 0.2 mV/°C drift performance.
Does OP113FP support true rail-to-rail input operation?
Yes, OP113FP supports input common-mode voltage from the negative supply rail (V–) up to within 1 V of the positive supply rail (V+) across its full operating temperature range. This enables direct interfacing with grounded sensors, bridge circuits, and transducers without external bias networks-confirmed in the Electrical Characteristics tables for both E and F grades.
Can OP113FP be used as a comparator?
Yes, OP113FP can function as a precision voltage comparator due to its PNP input stage, zero-volt common-mode capability, and low offset voltage (<150 µV typ). However, it lacks dedicated comparator features like open-collector output or internal hysteresis. Its 15 µs propagation delay (per Figure 11) makes it suitable for low-speed threshold detection where accuracy matters more than speed.
What is the purpose of Pins 1 and 5 on OP113FP?
Pins 1 and 5 on OP113FP are offset null terminals configured for external trimming using a 10 kΩ potentiometer (wiper to V–). This industry-standard arrangement allows adjustment of input offset voltage by ±2 mV, enabling fine calibration in high-accuracy applications like precision weigh scales and RTD thermometers where initial offset must be minimized.
Is OP113FP suitable for driving 600 Ω loads?
Yes, OP113FP is fully specified to drive 600 Ω loads across its operating temperature range, delivering guaranteed output voltage swing (e.g., 3.9 V on 5 V supply) and short-circuit current limit of ±30 mA. Its output stage is explicitly characterized for 600 Ω loading in both the Electrical Characteristics and Typical Performance sections of the datasheet.
OP113FP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1.2V/µs
- Gain Bandwidth Product:
- 3.4 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 600 nA
- Voltage - Input Offset:
- 150 µV
- Current - Supply:
- -
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 4 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
OP113FP FAQ
1.How can I place an order for OP113FP through Aetrix?
Please submit a Request for Quotation (RFQ) for OP113FP 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 OP113FP reliable?
The price and inventory of OP113FP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OP113FP is usually 5 days.
3.What payment methods are accepted for OP113FP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OP113FP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OP113FP?
OP113FP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OP113FP 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 OP113FP?
For technical support, including OP113FP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OP113FP requirements.
6.How does Aetrix verify that OP113FP is sourced from the original manufacturer or authorized distributors?
All OP113FP 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 OP113FP meets industry standards.
7.What is the process for return or replacement of OP113FP?
All OP113FP units undergo pre-shipment inspection (PSI). If there is an issue with OP113FP, 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 OP113FP part is unused and in its original packaging.
Return procedure for OP113FP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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