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Texas Instruments OPA602AU/2K5
- Part No.:
- OPA602AU/2K5
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA602AU/2K5.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,284
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Product details
Overview
OPA602AU/2K5 from Texas Instruments is a precision dielectrically isolated FET (Difet®) operational amplifier optimized for high-speed, low-input-bias-current signal conditioning in data conversion and ultrasound front-ends. It delivers 6.5MHz gain bandwidth, 35V/µs slew rate, ±3000µV max input offset voltage, and 1pA max input bias current at 25°C in an SOIC-8 package.
For engineers reviewing the OPA602AU/2K5 datasheet, OPA602AU/2K5 pinout, OPA602AU/2K5 application, or OPA602AU/2K5 equivalent, key selection considerations include its unity-gain stability, 1500pF capacitive load drive capability, ultra-low bias current over full common-mode range, and suitability for precision optoelectronic transimpedance stages and medical analog front-ends.
Technical Context
The OPA602AU/2K5 employs monolithic Difet® construction to combine bipolar-like offset performance with FET-level input impedance and bias current. Its cascode input stage maintains ±1pA bias current across ±10.2V common-mode range while enabling fast settling (1µs to 0.01%) and low distortion.
This architecture supports stable operation at unity gain with no external compensation, and drives up to 1500pF directly-critical for anti-aliasing filter interfaces and high-resolution ADC driver applications where dynamic accuracy and DC precision are simultaneously required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth | 6.5MHz - Enables accurate closed-loop amplification up to ~65kHz at gain=100 without phase margin degradation. |
| Slew Rate | 35V/µs - Supports clean 20Vp-p output transitions at ≥570kHz full-power bandwidth into 1kΩ. |
| Input Bias Current | ±1pA max at 25°C - Permits use with >1GΩ feedback networks in photodiode transimpedance amps without significant error. |
| Input Offset Voltage | ±3000µV max - Laser-trimmed Difet input ensures precision comparable to bipolar op amps despite FET topology. |
| Settling Time | 1.0µs to 0.01% - Measured with 10V step, CL=500pF; critical for 16-bit+ data acquisition system settling compliance. |
| Capacitive Load Drive | 1500pF - Allows direct connection to ADC input capacitance or long PCB traces without instability or ringing. |
| Supply Voltage Range | ±5V to ±18V - Supports industrial ±15V rails and low-voltage ±5V systems with derated performance. |
Pinout & Package
OPA602AU/2K5 is housed in an SOIC-8 (Package Drawing D, JEDEC MS-012) surface-mount package with standard 1.27mm pitch, 3.9mm width, and moisture sensitivity level 3 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Offset Trim (–) | Connects to potentiometer wiper for manual nulling of input offset voltage; unused pins must be left open or tied to V–. |
| 2 | Inverting Input (–In) | High-impedance FET input node; requires guarding to prevent leakage currents exceeding 1pA. |
| 3 | Noninverting Input (+In) | High-impedance FET input node; common-mode range extends to ±10.2V with ±15V supplies. |
| 4 | Negative Supply (–VS) | Ground-referenced negative rail connection; must be bypassed with 0.1µF ceramic capacitor near pin. |
| 5 | Offset Trim (+) | Connects to potentiometer end for offset adjustment; not used in standard configurations. |
| 6 | Output | Capable of ±11.5V swing into 1kΩ; drives 1500pF load stably with <0.01% settling in 1µs. |
| 7 | Positive Supply (+VS) | Positive rail connection; requires local 0.1µF ceramic + optional 1µF tantalum bypass for heavy transient loads. |
| 8 | No Connection (NC) | Internally unconnected; must remain floating-no routing or grounding permitted. |
Key Features
| Feature | Design Value |
|---|---|
| Unity-Gain Stable Architecture | Eliminates need for external compensation components in gain ≥1 configurations, reducing BOM count and layout complexity. |
| Difet® Input Stage | Combines 1pA max input bias current with ±3000µV offset voltage-enabling precision sensor interfacing without trade-off between speed and DC accuracy. |
| Cascode Input Circuitry | Maintains ultra-low bias current across full ±10.2V input common-mode range, ensuring consistent performance in varying signal conditions. |
| 1500pF Capacitive Load Drive | Supports direct interface to ADC inputs, filters, or long traces without added isolation resistors or stability compromises. |
| Low 1.4µVrms Input Noise (10Hz–10kHz) | Enables high-fidelity signal amplification in ultrasound receive chains and professional audio preamps where noise floor limits SNR. |
Applications
| Ultrasound Receive Amplifier | Photodiode Transimpedance Amplifier |
|---|---|
Use Scenario: Amplifying weak, wideband echo signals from piezoelectric transducers in diagnostic ultrasound systems. IC Role / Device Role / Timing Role: Primary low-noise, high-slew-rate gain stage before ADC sampling; handles 1–15MHz bandwidth with minimal phase distortion. Use Value: 35V/µs slew rate and 1.4µVrms integrated noise preserve pulse fidelity and dynamic range for accurate tissue characterization. |
Use Scenario: Converting nanoamp-level photocurrent from high-impedance photodiodes in optical encoders or spectrometers. IC Role / Device Role / Timing Role: Transimpedance amplifier with >1GΩ feedback resistor; maintains linearity and bandwidth under varying light conditions. Use Value: ±1pA max input bias current prevents significant error voltage across large feedback resistors, ensuring sub-µV resolution. |
| Data Acquisition System Driver | Professional Audio Line Driver |
Use Scenario: Driving SAR or sigma-delta ADC inputs in 16-bit+ industrial data loggers requiring fast settling and low THD. IC Role / Device Role / Timing Role: Buffer and level-shifter between signal conditioner and ADC sample-and-hold input; manages charge injection and kickback. Use Value: 1µs to 0.01% settling guarantees full-scale transitions meet timing budgets for 1MSPS+ acquisition rates. |
Use Scenario: Low-distortion line-level output stage in studio mixing consoles and digital audio workstations. IC Role / Device Role / Timing Role: Final gain and drive stage delivering balanced/unbalanced outputs with wide voltage swing and low harmonic content. Use Value: <0.001% THD+N at 1kHz and ±11.5V output swing enable transparent signal reproduction without coloration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA627AU | Higher precision (±100µV offset), lower noise (12nV/√Hz), but slower (1.6MHz GBW) and higher cost. | Better for DC-critical instrumentation; unsuitable for >200kHz signal paths due to limited bandwidth. | Select when ultra-low offset and drift outweigh speed requirements. |
| ADA4898-1ARZ | Lower noise (1.1nV/√Hz), higher slew rate (94V/µs), but requires dual supply and has higher quiescent current (10mA). | Preferred for low-noise, high-speed ADC drivers where power budget allows; not drop-in compatible due to different pinout. | Choose for highest dynamic performance in power-tolerant systems; verify PCB layout changes needed. |
Compared with OPA602AU/2K5, OPA627AU trades bandwidth for superior DC precision, while ADA4898-1ARZ delivers higher speed and lower noise at increased power and layout complexity-making OPA602AU/2K5 the optimal balance for cost-sensitive, mixed-signal medical and test equipment designs.
Availability
OPA602AU/2K5 is available at Aetrix Electronics and suitable for ultrasound imaging systems, precision data acquisition modules, and professional audio signal chains requiring stable component supply, RoHS-compliant packaging, and long-term industrial availability.
Supply support for OPA602AU/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, embedded processing, and digital signal technologies, with decades of heritage in precision amplifier innovation.
The OPA602AU/2K5 belongs to TI's legacy high-speed precision op amp family, engineered specifically for demanding analog signal paths in medical, test & measurement, and professional audio where speed, accuracy, and reliability must coexist.
FAQ
What is the maximum capacitive load the OPA602AU/2K5 can drive while remaining stable?
The OPA602AU/2K5 is specified to drive up to 1500pF capacitive load in unity-gain configuration without external compensation. This capability is verified per the datasheet's "Load Capacitance Stability" specification and enables direct connection to ADC inputs, RC filters, or long PCB traces without risk of oscillation or overshoot-provided proper power supply bypassing (0.1µF ceramic near pins 4 and 7) is implemented.
Does the OPA602AU/2K5 require external offset trim for typical applications?
The OPA602AU/2K5 has a maximum input offset voltage of ±3000µV at 25°C, which may be acceptable for many signal-conditioning tasks without trimming. However, pins 1 and 5 are provided for optional offset nulling using a 100kΩ potentiometer; this is recommended in DC-critical applications such as precision instrumentation or low-gain sensor amplifiers where residual offset would degrade accuracy beyond system requirements.
Can the OPA602AU/2K5 operate from a single supply?
While the OPA602AU/2K5 is characterized and optimized for dual-supply operation (±5V to ±18V), it can function on a single supply if the input common-mode range and output swing are constrained within valid limits. For example, with +15V and ground, the input must stay within –11V to +13V relative to ground (i.e., 0V to +13V), and output swing is limited to ~0V to +12.9V. Rail-to-rail input/output variants are not supported-designers must ensure biasing and headroom margins are maintained.
How does the OPA602AU/2K5's input bias current behave over temperature?
The OPA602AU/2K5 exhibits ±20pA max input bias current over its full operating temperature range (–25°C to +85°C), increasing from ±1pA at 25°C. This behavior is documented in the "Bias and Offset Current vs Temperature" graph (page 6) and confirms that the Difet® process maintains exceptionally low leakage even at elevated ambient temperatures-critical for high-impedance sensor interfaces where thermal drift could otherwise dominate error budgets.
Is the OPA602AU/2K5 pin-compatible with other SOIC-8 op amps like the OPA2134?
No, the OPA602AU/2K5 is not pin-compatible with the OPA2134 or most general-purpose SOIC-8 op amps. Its pin 1 is Offset Trim (–), pin 5 is Offset Trim (+), and pin 8 is No Connection (NC)-a configuration distinct from standard dual-op-amp layouts. Substituting it into an existing OPA2134 footprint would result in incorrect connections and functional failure; board redesign is required for integration.
OPA602AU/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:
- 1
- Output Type:
- -
- Slew Rate:
- 35V/µs
- Gain Bandwidth Product:
- 6.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 2 pA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 3mA
- Current - Output / Channel:
- 20 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -25°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
OPA602AU/2K5 FAQ
1.How can I place an order for OPA602AU/2K5 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA602AU/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 OPA602AU/2K5 reliable?
The price and inventory of OPA602AU/2K5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA602AU/2K5 is usually 5 days.
3.What payment methods are accepted for OPA602AU/2K5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA602AU/2K5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA602AU/2K5?
OPA602AU/2K5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA602AU/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 OPA602AU/2K5?
For technical support, including OPA602AU/2K5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA602AU/2K5 requirements.
6.How does Aetrix verify that OPA602AU/2K5 is sourced from the original manufacturer or authorized distributors?
All OPA602AU/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 OPA602AU/2K5 meets industry standards.
7.What is the process for return or replacement of OPA602AU/2K5?
All OPA602AU/2K5 units undergo pre-shipment inspection (PSI). If there is an issue with OPA602AU/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 OPA602AU/2K5 part is unused and in its original packaging.
Return procedure for OPA602AU/2K5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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