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Texas Instruments OPA2107AU/2K5G4
- Part No.:
- OPA2107AU/2K5G4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2107AU/2K5G4.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,977
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Product details
Overview
OPA2107AU/2K5G4 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 serves as a low-noise, high-impedance signal conditioner in medical CT scanner front-ends and DAC output stages.
For engineers reviewing the OPA2107AU/2K5G4 datasheet, OPA2107AU/2K5G4 pinout, OPA2107AU/2K5G4 application, or OPA2107AU/2K5G4 equivalent, this page provides verified specifications, SOIC-8 terminal mapping, real-world use cases in high-impedance sensor amplification and precision audio, and two validated alternative parts with documented functional trade-offs.
Technical Context
The OPA2107AU/2K5G4 uses Texas Instruments' proprietary dielectrically isolated FET (Difet®) process to achieve 10pA max input bias current while maintaining 13–18V/µs slew rate and 4.5MHz gain-bandwidth product. Its laser-trimmed input stage ensures 0.1–1mV offset voltage and 3–10µV/°C drift across –25°C to +85°C.
This dual op amp is unity-gain stable with 1000pF capacitive load tolerance and supports ±4.5V to ±18V supply operation. Common-mode rejection exceeds 80dB up to 10kHz, and channel separation remains ≥120dB at 100Hz under 2kΩ load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Noise | 8nV/√Hz at 10kHz - enables low-noise amplification of µV-level sensor signals without dominating source noise. |
| Input Offset Voltage | ≤1mV max - reduces DC error in precision instrumentation and medical analog front-ends. |
| Input Bias Current | ≤10pA max - preserves signal integrity in >10¹²Ω source impedances, e.g., piezoelectric or pH sensors. |
| Slew Rate | 13–18V/µs - supports fast settling (2µs to 0.01%) for 10V step inputs in data acquisition systems. |
| Gain-Bandwidth Product | 4.5MHz - allows stable closed-loop gain ≥100 at 10kHz with minimal phase margin degradation. |
| Common-Mode Rejection | ≥80dB over –10.5V to +10.5V range - rejects power-supply and EMI-induced common-mode interference in noisy industrial environments. |
| Supply Current | ±4.5mA total (±2.25mA per amplifier) - balances low-power operation with dynamic performance in battery-backed systems. |
Pinout & Package
OPA2107AU/2K5G4 is housed in an 8-pin SOIC (SO-8) package with 1.27mm pitch, 3.9mm width, and 1.75mm max height, compliant with JEDEC MS-012 variation AA and RoHS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output A | Amplifier A output node; drives loads up to ±12V into 2kΩ with <0.01% settling in 2µs. |
| 2 | Inverting Input A | High-impedance (10¹³Ω || 2pF) negative feedback node for amplifier A; sensitive to PCB leakage. |
| 3 | Non-Inverting Input A | High-impedance (10¹³Ω || 2pF) signal input for amplifier A; requires guard trace for optimal 10pA bias current performance. |
| 4 | –VS | Negative supply rail connection; must be bypassed with 0.1µF ceramic capacitor near pin for stability. |
| 5 | Non-Inverting Input B | High-impedance (10¹³Ω || 2pF) signal input for amplifier B; electrically isolated from amplifier A except via shared supply rails. |
| 6 | Inverting Input B | High-impedance (10¹³Ω || 2pF) negative feedback node for amplifier B; layout symmetry recommended vs. pins 2–3. |
| 7 | Output B | Amplifier B output node; independent channel with identical AC/DC specs to pin 1. |
| 8 | +VS | Positive supply rail connection; shares thermal path with pin 4; requires symmetric bypassing. |
Key Features
| Feature | Design Value |
|---|---|
| Difet® Process Architecture | Enables simultaneous 10pA IB, 8nV/√Hz en, and 10µV/°C VOS drift - unattainable with standard BIFET or CMOS op amps. |
| Laser-Trimmed Input Stage | Guarantees ≤1mV VOS and <10µV/°C drift without external nulling circuitry, reducing BOM count in medical-grade designs. |
| Unity-Gain Stability | Operates stably at G = 1 with ≥1000pF capacitive load - eliminates need for external compensation in DAC buffer applications. |
| High Channel Separation | ≥120dB at 100Hz - prevents crosstalk between dual channels in stereo audio or differential sensor conditioning circuits. |
| Wide Supply Range | ±4.5V to ±18V operation - supports both low-voltage portable equipment and high-dynamic-range industrial signal chains. |
Applications
| Medical CT Scanner Front-End | DAC Output Amplification |
|---|---|
|
Use Scenario: Amplifying low-amplitude, high-frequency X-ray detector signals in computed tomography systems where sub-mV DC accuracy and <10nV/√Hz noise are critical. IC Role / Device Role / Timing Role: Dual-channel precision voltage amplifier conditioning analog outputs from 16-bit DACs driving CT detector bias networks. Use Value: 8nV/√Hz noise floor and ≤1mV offset ensure accurate reconstruction of µV-level photon counts without introducing quantization or thermal errors. |
Use Scenario: Buffering and level-shifting DAC outputs in automated test equipment requiring monotonicity and glitch-free step response. IC Role / Device Role / Timing Role: Unity-gain stable output driver providing 2µs 0.01% settling for 10V full-scale steps from 16-bit DACs. Use Value: 13–18V/µs slew rate and 4.5MHz GBW enable precise reproduction of fast-rising DAC codes without overshoot or ringing. |
| High-Impedance Sensor Interface | Precision Audio Signal Path |
|
Use Scenario: Interfacing pH electrodes, piezoresistive pressure sensors, and photodiode transimpedance stages where input impedance >10¹²Ω is mandatory. IC Role / Device Role / Timing Role: First-stage JFET-input amplifier with guarded inputs preserving signal integrity in ultra-high-Z sensor nodes. Use Value: 10pA max IB and 10¹⁴Ω || 4pF common-mode input impedance prevent loading of high-Z sources and minimize drift-induced baseline shift. |
Use Scenario: Low-distortion gain stage in studio-grade microphone preamplifiers and ADC driver circuits demanding THD+N <0.001% at 1kHz. IC Role / Device Role / Timing Role: Dual-channel line driver and active filter component in balanced audio signal chains operating at ±15V supplies. Use Value: 0.001% THD+N at 1kHz and ≥120dB channel separation preserve stereo imaging fidelity and suppress inter-channel crosstalk. |
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; 20pA IB; wider ±22V supply range. | Preferred in high-voltage industrial control where noise is secondary to rail-to-rail output swing. | Select OPA2111KP only if supply >±18V is required and 4nV/√Hz noise advantage of OPA2107AU/2K5G4 is non-critical. |
| AD823ARZ | CMOS input (0.2pA IB); higher 15nV/√Hz noise; 17MHz GBW; not unity-gain stable. | Suitable for low-power, high-speed single-supply systems but requires external compensation for G=1. | Choose AD823ARZ when ultra-low bias current dominates design priorities and stability can be managed via compensation network. |
Compared with OPA2107AU/2K5G4, OPA2111KP trades 4nV/√Hz lower noise for higher supply tolerance, while AD823ARZ offers femtoampere bias current at the cost of increased noise and loss of unity-gain stability - making OPA2107AU/2K5G4 optimal for noise-sensitive, uncompensated dual-channel precision analog front-ends.
Availability
OPA2107AU/2K5G4 is available at Aetrix Electronics and suitable for medical imaging equipment, industrial data acquisition systems, and high-fidelity audio electronics requiring stable component supply across extended production lifecycles.
Supply support for OPA2107AU/2K5G4 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 over 50 years of innovation in precision signal chain components.
The OPA2107AU/2K5G4 belongs to TI's Precision Difet® Op Amp family, engineered specifically for low-noise, low-drift, high-input-impedance applications in medical diagnostics, scientific instrumentation, and test equipment.
FAQ
What is the maximum operating temperature range for the OPA2107AU/2K5G4?
The OPA2107AU/2K5G4 is specified for operation from –25°C to +85°C, matching the SOIC-8 package's rated ambient range. Its electrical characteristics-including 10µV/°C max drift and 8nV/√Hz noise-are guaranteed across this full interval, with storage rated to +125°C.
Does the OPA2107AU/2K5G4 require external compensation for unity-gain configurations?
No, the OPA2107AU/2K5G4 is internally compensated and unity-gain stable, supporting direct G = 1 configurations without external components. It maintains stability with up to 1000pF capacitive load on either output, simplifying DAC buffer and transimpedance amplifier designs.
How does the Difet® process in the OPA2107AU/2K5G4 differ from standard BIFET op amps?
The Difet® process used in the OPA2107AU/2K5G4 employs dielectric isolation to suppress substrate leakage paths, achieving 10pA max input bias current-10× lower than typical BIFET amplifiers-while retaining superior dc accuracy (≤1mV VOS) and low 10µV/°C drift.
Can the OPA2107AU/2K5G4 drive heavy capacitive loads such as ADC input sampling capacitors?
Yes, the OPA2107AU/2K5G4 is characterized for stable operation with up to 1000pF capacitive load in unity-gain configuration. For heavier loads (>1nF), a small series resistor (10–50Ω) between output and capacitor is recommended to maintain phase margin and prevent peaking.
Is the OPA2107AU/2K5G4 pin-compatible with other dual op amps in SOIC-8 packages like the TL072?
No, the OPA2107AU/2K5G4 has a non-standard pinout: pins 1/7 are outputs, pins 2/6 are inverting inputs, pins 3/5 are non-inverting inputs, and pins 4/8 are supplies. This differs from TL072 (output/in+/in–/V–/V+/in+/in–/output), requiring PCB layout revision for substitution.
OPA2107AU/2K5G4 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:
- Discontinued at Digi-Key
- 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/2K5G4 FAQ
1.How can I place an order for OPA2107AU/2K5G4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2107AU/2K5G4 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/2K5G4 reliable?
The price and inventory of OPA2107AU/2K5G4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2107AU/2K5G4 is usually 5 days.
3.What payment methods are accepted for OPA2107AU/2K5G4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2107AU/2K5G4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2107AU/2K5G4?
OPA2107AU/2K5G4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2107AU/2K5G4 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/2K5G4?
For technical support, including OPA2107AU/2K5G4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2107AU/2K5G4 requirements.
6.How does Aetrix verify that OPA2107AU/2K5G4 is sourced from the original manufacturer or authorized distributors?
All OPA2107AU/2K5G4 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/2K5G4 meets industry standards.
7.What is the process for return or replacement of OPA2107AU/2K5G4?
All OPA2107AU/2K5G4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2107AU/2K5G4, 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/2K5G4 part is unused and in its original packaging.
Return procedure for OPA2107AU/2K5G4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA2107AU/2K5G4 Tags
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