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Texas Instruments OPA2107AU/2K5
- Part No.:
- OPA2107AU/2K5
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2107AU/2K5.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,434
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Product details
Overview
OPA2107AU/2K5 from Texas Instruments is a precision dual JFET-input operational amplifier in SOIC-8 package, delivering 8nV/√Hz input voltage noise at 10kHz, ≤1mV input offset voltage, and 10µV/°C max drift. It operates from ±4.5V to ±18V supplies, draws ≤4.5mA total quiescent current, and is unity-gain stable-ideal for high-impedance sensor signal conditioning in medical CT scanners and precision DAC output stages.
For engineers reviewing the OPA2107AU/2K5 datasheet, OPA2107AU/2K5 pinout, OPA2107AU/2K5 application, or OPA2107AU/2K5 equivalent, key selection criteria include its ultra-low 10pA max input bias current, 2µs 0.01% settling time, 13–18V/µs slew rate, and compatibility with high-source-impedance circuits where leakage and drift critically impact accuracy.
Technical Context
The OPA2107AU/2K5 uses a proprietary dielectrically isolated FET (Difet®) process to achieve sub-10pA input bias current without compromising dc precision-laser-trimmed input circuitry ensures ≤1mV VOS and ≤10µV/°C drift. Its fully differential dual architecture supports independent high-impedance signal paths with >120dB channel separation at 100Hz.
Designed for unity-gain stability, it delivers 4.5MHz gain-bandwidth product and 13–18V/µs slew rate while maintaining low THD+noise (0.001% at 1kHz). Input common-mode range extends to ±11V with ±15V supplies, and capacitive load stability is guaranteed up to 1000pF in G = +1 configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Noise | 8nV/√Hz at 10kHz - enables low-noise amplification of microvolt-level sensor signals without dominant resistor thermal noise contribution |
| Input Bias Current | ≤10pA max - preserves signal integrity in >1GΩ source impedance circuits such as photodiode or piezoelectric transducer interfaces |
| Input Offset Voltage | ≤1mV max - reduces dc error in precision gain stages and instrumentation amplifier front-ends without trimming |
| Drift | ≤10µV/°C max - maintains calibration stability over industrial temperature range (–25°C to +85°C) |
| Slew Rate | 13–18V/µs - supports fast transient response in data acquisition systems requiring ≤2µs settling to 0.01% |
| Gain-Bandwidth Product | 4.5MHz - allows stable closed-loop operation at gains ≥10 with adequate phase margin |
| Supply Current | ≤4.5mA total (2.25mA per amplifier) - enables dual-channel precision performance within tight power budgets |
Pinout & Package
OPA2107AU/2K5 is housed in an SOIC-8 (D) package, 3.91mm × 4.90mm footprint, 1.75mm max height, RoHS-compliant with NiPdAu lead finish and MSL Level-3 rating (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output A | Amplifier A output node; drives loads up to ±12V swing into 2kΩ |
| 2 | Inverting Input A | High-impedance (10¹³Ω || 2pF) negative feedback node for amplifier A |
| 3 | Non-Inverting Input A | High-impedance (10¹³Ω || 2pF) signal input node for amplifier A |
| 4 | –VS | Negative supply rail connection; must be bypassed with 0.1µF ceramic capacitor near pin |
| 5 | Non-Inverting Input B | High-impedance (10¹³Ω || 2pF) signal input node for amplifier B |
| 6 | Inverting Input B | High-impedance (10¹³Ω || 2pF) negative feedback node for amplifier B |
| 7 | Output B | Amplifier B output node; electrically isolated from Output A with >120dB channel separation |
| 8 | +VS | Positive supply rail connection; requires local 0.1µF ceramic bypass capacitor |
Key Features
| Feature | Design Value |
|---|---|
| Difet® Process Architecture | Enables <10pA input bias current while maintaining <1mV VOS and <10µV/°C drift-critical for high-Z sensor front-ends |
| Laser-Trimmed Input Stage | Guarantees initial offset voltage ≤1mV and low drift without external calibration components |
| Unity-Gain Stable Design | Operates reliably at G = 1 without external compensation, simplifying layout in buffer and gain-of-one configurations |
| 1000pF Capacitive Load Drive | Stable driving of long cables or ADC input capacitance without oscillation or ringing |
| ±11V Output Swing (RL = 2kΩ) | Delivers full-scale analog output across wide dynamic range in ±15V systems |
Applications
| Data Acquisition Systems | DAC Output Amplifiers |
|---|---|
|
Use Scenario: High-resolution (16–24-bit) sampling of slow-varying physical sensors (strain gauges, thermocouples) in industrial PLCs. IC Role / Device Role / Timing Role: Dual-channel precision buffer and gain stage-amplifier A conditions sensor bridge output, amplifier B buffers reference voltage. Use Value: 8nV/√Hz noise floor and ≤10pA bias current prevent signal degradation from Johnson noise and leakage-induced offset drift. |
Use Scenario: Post-processing of unbuffered voltage-mode DAC outputs (e.g., DAC856x) requiring rail-to-rail drive capability and low glitch energy. IC Role / Device Role / Timing Role: Unity-gain output driver with 2µs 0.01% settling-ensures monotonic step response and minimal code-dependent errors. Use Value: 13–18V/µs slew rate and 4.5MHz GBW enable accurate reproduction of fast DAC updates without overshoot or settling delay. |
| High-Impedance Sensor Amplifiers | Medical CT Scanner Signal Chains |
|
Use Scenario: Amplification of picoampere-level currents from photodiodes or ion-selective electrodes in analytical instrumentation. IC Role / Device Role / Timing Role: Transimpedance amplifier front-end with guard-driven PCB layout-leverages ultra-low IB to avoid signal loss through board leakage. Use Value: ≤10pA input bias current minimizes measurement error in >10GΩ transimpedance gains, enabling femtoampere resolution. |
Use Scenario: Analog signal conditioning of X-ray detector outputs in computed tomography systems requiring low noise, low drift, and long-term calibration stability. IC Role / Device Role / Timing Role: Dual-channel correlated double sampling (CDS) amplifier-amplifier A samples reset level, amplifier B samples signal level, difference computed externally. Use Value: Matched drift (≤10µV/°C) and low 1/f noise ensure consistent baseline subtraction across temperature and time, critical for image uniformity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision dual JFET op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2111KP | Higher 12nV/√Hz noise at 10kHz; 25pA max IB; DIP-8 only; wider –40°C to +85°C temp range | Preferred for legacy through-hole designs requiring extended temperature range; unsuitable for space-constrained SOIC layouts | Select OPA2111KP only when DIP-8 mechanical fit or –40°C operation is mandatory-OPA2107AU/2K5 offers superior noise and bias current in surface-mount form factor |
| AD823ARZ | CMOS input (1pA IB), but higher 15nV/√Hz noise; rail-to-rail output; 17MHz GBW; not unity-gain stable (requires 100Ω series resistor) | Better for low-voltage (±5V) systems needing rail-to-rail output swing; unsuitable for high-Z sources above 10MΩ due to higher voltage noise | Choose AD823ARZ for ±5V, rail-to-rail applications with moderate noise tolerance; OPA2107AU/2K5 remains optimal for low-noise, high-impedance, ±15V precision signal chains |
Compared with OPA2107AU/2K5, OPA2111KP trades lower noise and bias current for through-hole packaging and extended cold-temperature operation, while AD823ARZ sacrifices noise performance and unity-gain stability for rail-to-rail output and higher bandwidth-making OPA2107AU/2K5 the preferred choice for legacy-compatible, low-noise, high-impedance dual-channel precision amplification.
Availability
OPA2107AU/2K5 is available at Aetrix Electronics and suitable for medical imaging equipment, high-precision data acquisition systems, and industrial sensor signal conditioning requiring stable component supply across extended production lifecycles.
Supply support for OPA2107AU/2K5 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
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of heritage in precision op amp design and manufacturing excellence.
The OPA2107AU/2K5 belongs to TI's Precision Difet® Operational Amplifier family-engineered specifically for applications demanding ultra-low input bias current, low noise, and exceptional dc accuracy in dual-channel configurations.
FAQ
What is the maximum operating temperature range for the OPA2107AU/2K5?
The OPA2107AU/2K5 is specified for operation from –25°C to +85°C. This range is confirmed in the Electrical Characteristics table and Package/Ordering Information section of the SBOS161A datasheet. The device's thermal resistance (θJ-A) is 175°C/W in the SOIC-8 package, and junction temperature must remain ≤175°C under all operating conditions. Derating guidelines apply beyond +85°C ambient.
Does the OPA2107AU/2K5 require external compensation for unity-gain stability?
No, the OPA2107AU/2K5 is internally compensated for unity-gain stability. The datasheet explicitly states "Unity-Gain Stable" in the FEATURES section and confirms stable operation with capacitive loads up to 1000pF at G = +1. No external compensation network is needed-this simplifies design in buffer, follower, and gain-of-one configurations.
What is the input impedance specification of the OPA2107AU/2K5?
The OPA2107AU/2K5 features differential input impedance of 10¹³Ω || 2pF and common-mode input impedance of 10¹⁴Ω || 4pF, as measured in the ELECTRICAL CHARACTERISTICS table. These values reflect the Difet® process's dielectric isolation and are critical for preserving signal fidelity in high-impedance sensor interfaces where leakage paths dominate error sources.
Can the OPA2107AU/2K5 drive heavy capacitive loads without oscillation?
Yes-the OPA2107AU/2K5 is characterized for stable operation with up to 1000pF capacitive load at unity gain, as stated in the ELECTRICAL CHARACTERISTICS table under "Capacitive Load Stability." This capability eliminates need for isolation resistors in driving ADC inputs, long cables, or filter networks-provided proper power supply bypassing (0.1µF ceramic near pins 4 and 8) is implemented.
Is the OPA2107AU/2K5 pin-compatible with other dual op amps in SOIC-8 packages?
The OPA2107AU/2K5 follows standard SOIC-8 pinout for dual op amps (pin 1 = Out A, pin 2 = In– A, pin 3 = In+ A, pin 4 = –VS, pin 5 = In+ B, pin 6 = In– B, pin 7 = Out B, pin 8 = +VS). While this matches industry convention, functional equivalence (e.g., bias current, noise, stability) must be verified per application-no documentation asserts pin-to-pin compatibility with non-TI devices.
OPA2107AU/2K5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Difet®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 18V/µs
- Gain Bandwidth Product:
- 4.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 4 pA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 4.5mA (x2 Channels)
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 9 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -25°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
OPA2107AU/2K5 FAQ
1.How can I place an order for OPA2107AU/2K5 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2107AU/2K5 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 OPA2107AU/2K5 reliable?
The price and inventory of OPA2107AU/2K5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2107AU/2K5 is usually 5 days.
3.What payment methods are accepted for OPA2107AU/2K5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2107AU/2K5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2107AU/2K5?
OPA2107AU/2K5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2107AU/2K5 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 OPA2107AU/2K5?
For technical support, including OPA2107AU/2K5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2107AU/2K5 requirements.
6.How does Aetrix verify that OPA2107AU/2K5 is sourced from the original manufacturer or authorized distributors?
All OPA2107AU/2K5 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 OPA2107AU/2K5 meets industry standards.
7.What is the process for return or replacement of OPA2107AU/2K5?
All OPA2107AU/2K5 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2107AU/2K5, 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 OPA2107AU/2K5 part is unused and in its original packaging.
Return procedure for OPA2107AU/2K5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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