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Texas Instruments OPA2107APG4
- Part No.:
- OPA2107APG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
OPA2107APG4.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,337
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Product details
Overview
OPA2107APG4 from Texas Instruments is a precision dual Difet® operational amplifier optimized for low-noise, high-input-impedance analog signal conditioning. It delivers 8nV/√Hz input voltage noise at 10kHz, ≤1mV input offset voltage, and 10µV/°C max drift, enabling high-fidelity amplification in CT scanner front-ends and DAC output stages.
For engineers reviewing the OPA2107APG4 datasheet, OPA2107APG4 pinout, OPA2107APG4 application, or OPA2107APG4 equivalent, key selection criteria include its ±15V supply operation, 13–18V/µs slew rate, unity-gain stability, and SO-8 package compatibility with legacy DIP-8 layouts via adapter boards.
Technical Context
The OPA2107APG4 employs dielectrically isolated FET (Difet®) input stages to achieve sub-10pA bias current while maintaining laser-trimmed DC accuracy-enabling stable operation in high-impedance sensor interfaces where leakage currents degrade performance. Its cascode input architecture supports ±11V common-mode range and >94dB CMRR over temperature.
Dynamic performance is balanced by 4.5MHz gain-bandwidth product and 2µs settling to 0.01% for 10V steps, making it suitable for precision data acquisition systems requiring fast, low-distortion settling without phase-margin compromise. The device remains unity-gain stable with up to 1000pF capacitive load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Noise | 8nV/√Hz @ 10kHz - enables low-noise amplification of microvolt-level sensor signals without significant SNR degradation |
| Input Offset Voltage | ≤1mV max - ensures minimal DC error in precision instrumentation and medical signal chains |
| Input Bias Current | ≤10pA max - preserves signal integrity in >10¹³Ω source impedances (e.g., piezoelectric sensors) |
| Slew Rate | 13–18V/µs - supports fast transient response in DAC buffer and audio line-driver applications |
| Gain-Bandwidth Product | 4.5MHz - allows stable closed-loop gains up to 100 with adequate phase margin |
| Common-Mode Rejection | ≥94dB - rejects interference in differential sensing configurations with unbalanced PCB traces |
| Supply Voltage Range | ±4.5V to ±18V - accommodates industrial ±15V rails and low-voltage portable designs |
Pinout & Package
OPA2107APG4 is housed in an 8-pin SOIC (SO-8) package with standard JEDEC MS-012AA outline, 1.27mm pitch, and 1.75mm max height-compatible with automated SMT assembly and IPC-7351 land patterns.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output A | Amplifier A output; drives loads up to ±12V into 2kΩ with <0.01% settling in 2µs |
| 2 | Inverting Input A | High-impedance FET node (10¹³Ω || 2pF); requires guard ring to prevent board leakage errors |
| 3 | Non-Inverting Input A | Matched to Pin 2 for optimal CMRR; bias current ≤10pA enables ultra-high-Z sensor interfacing |
| 4 | Negative Supply (–VS) | Connects to system ground or negative rail; thermal resistance θJ-A = 175°C/W in SO-8 |
| 5 | Non-Inverting Input B | Independent channel B input; electrically isolated from Channel A to maintain >120dB channel separation |
| 6 | Inverting Input B | Channel B inverting node; identical specs to Pin 2-supports dual-channel instrumentation amplifier topologies |
| 7 | Output B | Amplifier B output; fully independent of Channel A-no crosstalk above 100kHz |
| 8 | Positive Supply (+VS) | Accepts +4.5V to +18V; bypass with 0.1µF ceramic capacitor within 5mm for stable high-frequency operation |
Key Features
| Feature | Design Value |
|---|---|
| Difet® Input Architecture | Dielectrically isolated FET inputs deliver ≤10pA bias current without sacrificing offset voltage or drift-critical for pH probes and photodiode transimpedance stages |
| Laser-Trimmed DC Performance | Ensures ≤1mV VOS and ≤10µV/°C drift across –25°C to +85°C, eliminating need for external nulling in medical equipment |
| Unity-Gain Stable Operation | Guarantees stable closed-loop behavior down to G = 1 with no external compensation-reduces BOM count in buffer and follower circuits |
| Low 1/f Noise Corner | 1.2µVp-p (0.1–10Hz) enables accurate DC-coupled measurements in EEG and ECG front-ends |
| Capacitive Load Drive | Stable with up to 1000pF load-supports direct driving of ADC input filters and long coaxial cables without oscillation |
Applications
| CT Scanner Signal Chain | DAC Output Amplification |
|---|---|
Use Scenario: Amplifying low-amplitude, high-impedance signals from X-ray detector photodiodes in computed tomography systems. IC Role / Device Role / Timing Role: Precision dual op amp configured as low-noise transimpedance and gain stages for analog front-end conditioning. Use Value: 8nV/√Hz noise floor preserves image contrast resolution; ≤10pA bias current prevents signal loss from detector leakage paths. | Use Scenario: Buffering and scaling voltage outputs from 16-bit DACs in industrial control loop actuators. IC Role / Device Role / Timing Role: Unity-gain stable output driver ensuring monotonicity and <0.01% settling for precise analog setpoint generation. Use Value: 2µs 0.01% settling time meets real-time control latency requirements; ±12V swing supports full-scale 0–10V or ±5V actuator ranges. |
| High-Impedance Sensor Interface | Medical Instrumentation Amplifier |
Use Scenario: Conditioning signals from glass pH electrodes and ion-selective sensors in clinical analyzers. IC Role / Device Role / Timing Role: Dual-channel op amp implementing guarded non-inverting amplifier and reference buffer in 3-op-amp IA topology. Use Value: 10¹⁴Ω common-mode input impedance minimizes electrode polarization error; 94dB CMRR rejects 50/60Hz mains interference. | Use Scenario: Building modular instrumentation amplifiers for patient monitoring devices (e.g., EMG, ECG). IC Role / Device Role / Timing Role: Core gain stage in discrete IA design with externally set RG resistor for programmable gain (e.g., 10–1000×). Use Value: Matched dual channels ensure >95dB CMRR; laser-trimmed VOS eliminates calibration drift during multi-hour clinical sessions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision dual op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2111KP | Higher 12nV/√Hz noise at 10kHz; wider ±18V supply range; DIP-8 only | Preferred for through-hole prototyping and legacy DIP-based medical instruments | Select when DIP-8 mechanical fit is required and 4nV/√Hz noise margin is acceptable |
| AD822ARZ | FET input but higher 25pA bias current; 1.8MHz GBW; rail-to-rail output | Better suited for single-supply portable systems where output swing to rail is critical | Choose for battery-powered devices needing rail-to-rail output, accepting higher noise and bias current |
Compared with OPA2107APG4, OPA2111KP offers broader supply tolerance but sacrifices low-noise performance and surface-mount compatibility, while AD822ARZ trades Difet®-level input impedance for rail-to-rail output flexibility-making OPA2107APG4 optimal for dual-supply, low-noise, high-Z precision analog systems.
Availability
OPA2107APG4 is available at Aetrix Electronics and suitable for CT scanner signal chains, DAC output amplification, and high-impedance sensor interface applications requiring stable component supply across extended production lifecycles.
Supply support for OPA2107APG4 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 innovation.
The OPA2107APG4 belongs to TI's precision Difet® op amp family, engineered specifically for demanding medical, test equipment, and scientific instrumentation applications where ultra-low noise, femtoampere bias current, and laser-trimmed DC accuracy are mandatory.
FAQ
What is the maximum operating temperature range for the OPA2107APG4?
The OPA2107APG4 is specified for operation from –25°C to +85°C, matching the P-package (DIP-8) and U-package (SO-8) temperature grade defined in the TI SBOS161A datasheet. Storage temperature extends to –40°C to +125°C, supporting industrial handling and reflow processes. This range ensures reliable performance in medical imaging equipment and laboratory instrumentation environments.
Does the OPA2107APG4 require external compensation for unity-gain stability?
No, the OPA2107APG4 is internally compensated for unity-gain stability and does not require external compensation components. Its phase margin exceeds 60° at G = 1, allowing direct use in voltage-follower and gain-of-one buffer configurations without risk of oscillation-even with 1000pF capacitive loads. This simplifies layout and reduces bill-of-materials cost in precision signal path designs.
Can the OPA2107APG4 drive heavy capacitive loads such as ADC input filters?
Yes, the OPA2107APG4 is characterized for stable operation with up to 1000pF capacitive load at unity gain, making it suitable for driving switched-capacitor ADC inputs and anti-aliasing filter networks. For loads exceeding 1000pF, TI recommends adding a small series resistor (e.g., 10–50Ω) between the OPA2107APG4 output and the capacitor to isolate reactive feedback and preserve stability.
How does the OPA2107APG4 compare to BIFET-type amplifiers in terms of input bias current?
The OPA2107APG4 achieves ≤10pA maximum input bias current-approximately one order of magnitude lower than legacy BIFET op amps-due to its proprietary dielectrically isolated FET (Difet®) process. This enables accurate amplification of signals from ultra-high-impedance sources like pH electrodes and photodiodes, where even 100pA leakage would introduce measurable error in the OPA2107APG4's precision signal chain.
Is the OPA2107APG4 RoHS compliant and lead-free?
Yes, the OPA2107APG4 is RoHS compliant and features a lead-free NIPDAU (nickel-palladium-gold) terminal finish, consistent with TI's SOIC (D) package specifications. It meets JEDEC Level-3 moisture sensitivity standards and is rated for peak reflow temperatures up to 260°C, supporting modern lead-free SMT assembly processes without compromising reliability or parametric performance.
OPA2107APG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Difet®
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
OPA2107APG4 FAQ
1.How can I place an order for OPA2107APG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2107APG4 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 OPA2107APG4 reliable?
The price and inventory of OPA2107APG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2107APG4 is usually 5 days.
3.What payment methods are accepted for OPA2107APG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2107APG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2107APG4?
OPA2107APG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2107APG4 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 OPA2107APG4?
For technical support, including OPA2107APG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2107APG4 requirements.
6.How does Aetrix verify that OPA2107APG4 is sourced from the original manufacturer or authorized distributors?
All OPA2107APG4 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 OPA2107APG4 meets industry standards.
7.What is the process for return or replacement of OPA2107APG4?
All OPA2107APG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2107APG4, 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 OPA2107APG4 part is unused and in its original packaging.
Return procedure for OPA2107APG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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