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Texas Instruments OPA602AU/2K5E4
- Part No.:
- OPA602AU/2K5E4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA602AU/2K5E4.pdf
- Description:
- HIGH-SPEED PRECISION DIFET OPERA
- Quantity:
- Payment:
- Shipping:
Inventory:3,951
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Product details
Overview
OPA602AU/2K5E4 from Texas Instruments is a precision dielectrically isolated FET (Difet®) operational amplifier optimized for high-speed, low-input-bias-current signal conditioning. It delivers 6.5MHz gain bandwidth, 35V/µs slew rate, ±3000µV max input offset voltage, and ±1pA max input bias current at +25°C - enabling accurate amplification in ultrasound front-ends, professional audio line drivers, and high-resolution data acquisition systems.
For engineers reviewing the OPA602AU/2K5E4 datasheet, OPA602AU/2K5E4 pinout, OPA602AU/2K5E4 application, or OPA602AU/2K5E4 equivalent, key selection criteria include unity-gain stability with 1500pF capacitive load drive, sub-1µs 0.01% settling time, laser-trimmed offset performance across –25°C to +85°C, and SOIC-8 packaging compatible with automated SMT assembly.
Technical Context
The OPA602AU/2K5E4 employs monolithic Difet® construction to simultaneously achieve bipolar-like offset precision and FET-level input impedance (10¹⁴ Ω || 3pF common-mode). Its cascode input stage maintains ±1pA bias current over full ±10.2V common-mode range while minimizing voltage noise (13nV/√Hz at 1kHz).
This architecture enables stable operation at unity gain with >60° phase margin into 1500pF loads, supports rail-to-rail output swing of ±11.5V (RL = 1kΩ), and sustains 570kHz full-power bandwidth at 20Vp-p - making it suitable for pulse amplification, active filtering, and precision DAC buffer stages where dynamic accuracy is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth | 6.5MHz - supports closed-loop gains up to 100 with <1% gain error at 65kHz. |
| Slew Rate | 35V/µs - ensures distortion-free reproduction of 10V-step signals within 0.29µs. |
| Input Offset Voltage | ±3000µV max at +25°C - calibrated via external trim potentiometer (100kΩ recommended). |
| Input Bias Current | ±1pA max at +25°C - enables high-impedance sensor interfacing without guard-ring PCB layout. |
| Settling Time | 1.0µs to 0.01% - meets timing requirements for 16-bit ADC/DAC interface circuits. |
| Capacitive Load Drive | 1500pF - allows direct connection to coaxial cables or ADC input capacitance without isolation resistors. |
| Supply Voltage Range | ±5V to ±18V - accommodates industrial ±12V and test equipment ±15V rails. |
Pinout & Package
OPA602AU/2K5E4 is housed in an 8-pin SOIC (D) package per JEDEC MS-012, with 1.27mm pitch, 5.00mm × 6.20mm body, and gull-wing leads rated for 260°C peak reflow (MSL Level-3).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Offset Trim (–) | Connects to wiper of external 100kΩ potentiometer for manual nulling of input offset voltage. |
| 2 | Inverting Input (–In) | High-impedance node requiring guarded PCB trace to prevent leakage-induced offset drift. |
| 3 | Non-Inverting Input (+In) | Accepts common-mode voltages from –10.2V to +10.2V with 88dB rejection at ±10V input. |
| 4 | –VS | Negative supply pin; must be bypassed with 0.1µF ceramic capacitor placed ≤5mm from pin. |
| 5 | NC | No internal connection - left unconnected; not used for thermal or shielding purposes. |
| 6 | Output | Capable of ±15mA continuous output current and ±11.5V swing into 1kΩ load. |
| 7 | +VS | Positive supply pin; requires local 0.1µF ceramic + optional 1µF tantalum bypass for fast transients. |
| 8 | Offset Trim (+) | Connects to opposite end of trim potentiometer; forms adjustable voltage divider for offset correction. |
Key Features
| Feature | Design Value |
|---|---|
| Unity-Gain Stable | Operates with ≥60° phase margin into 1500pF loads - eliminates need for external compensation networks. |
| Laser-Trimmed Offset | ±3000µV max at +25°C enables single-supply sensor signal conditioning without auto-zero circuitry. |
| Difet® Input Stage | Combines 10¹⁴Ω input impedance with 13nV/√Hz voltage noise - ideal for photodiode transimpedance amps. |
| Fast Settling | 1.0µs to 0.01% supports multiplexed 16-bit data acquisition at >100kSPS sample rates. |
| Wide Supply Range | ±5V to ±18V operation allows reuse across legacy ±12V instrumentation and modern ±15V test systems. |
Applications
| Ultrasound Beamforming | Professional Audio Line Driver |
|---|---|
|
Use Scenario: Amplifying weak echo signals from piezoelectric transducers in portable ultrasound systems. IC Role / Device Role / Timing Role: Low-noise, high-slew-rate preamplifier with 1µs settling to preserve pulse fidelity across 1–15MHz bandwidth. Use Value: Enables detection of sub-micron tissue boundaries by maintaining SNR >72dB with 13nV/√Hz input noise at 1MHz. |
Use Scenario: Driving balanced XLR outputs in digital mixing consoles with minimal THD+N. IC Role / Device Role / Timing Role: Unity-gain stable buffer isolating DAC output from cable capacitance and connector impedance variations. Use Value: Delivers <0.001% THD+N at 1kHz with 600Ω load due to low distortion and 1500pF capacitive drive capability. |
| Medical ECG Front-End | High-Resolution Data Acquisition |
|
Use Scenario: Conditioning microvolt-level biopotential signals in patient-worn ECG monitors. IC Role / Device Role / Timing Role: Precision instrumentation amplifier input stage with ultra-low bias current to minimize electrode polarization errors. Use Value: Prevents DC drift >1µV/min using ±1pA input bias current - critical for ST-segment analysis over 24-hour recordings. |
Use Scenario: Buffering 16-bit SAR ADC inputs in automated test equipment requiring fast channel switching. IC Role / Device Role / Timing Role: Settling amplifier ensuring full-scale step transitions settle to 0.01% within 1µs before ADC sampling. Use Value: Supports 1MSPS effective throughput by eliminating acquisition dead time between multiplexed channels. |
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 (±25µV offset), lower noise (5.5nV/√Hz), but only 1.6MHz GBW and higher cost. | Better for DC-critical sensor interfaces; unsuitable for >500kHz pulse amplification. | Select OPA627AU when offset drift (<0.2µV/°C) outweighs speed requirements. |
| ADA4898-1ARZ | Lower noise (1.1nV/√Hz), higher slew rate (85V/µs), but requires dual supply and lacks laser-trimmed offset. | Preferred for low-noise photodiode amps; needs external trimming for <1mV offset. | Choose ADA4898-1ARZ when voltage noise dominates system SNR and board space allows trim components. |
Compared with OPA602AU/2K5E4, OPA627AU trades bandwidth for DC precision, while ADA4898-1ARZ prioritizes noise/speed over ease of offset calibration - making OPA602AU/2K5E4 optimal for cost-sensitive, high-fidelity pulse and audio signal paths requiring guaranteed 1µs settling and factory-trimmed offset.
Availability
OPA602AU/2K5E4 is available at Aetrix Electronics and suitable for ultrasound beamforming, professional audio line driving, and medical ECG front-end designs requiring stable component supply across extended production lifecycles.
Supply support for OPA602AU/2K5E4 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 op amp innovation and manufacturing excellence.
The OPA602AU/2K5E4 belongs to TI's precision Difet® op amp family, engineered for applications demanding simultaneous high speed, ultra-low input bias current, and robust DC accuracy in harsh environments.
FAQ
What is the maximum capacitive load the OPA602AU/2K5E4 can drive while remaining stable?
The OPA602AU/2K5E4 is specified to remain unity-gain stable with up to 1500pF of capacitive load. This capability eliminates the need for isolation resistors when driving long cables or ADC input capacitance, and is verified under standard test conditions with ±15V supplies and 1kΩ parallel resistance. Exceeding 1500pF may reduce phase margin and cause peaking or oscillation in the OPA602AU/2K5E4 output response.
Does the OPA602AU/2K5E4 require external offset trim for typical applications?
Yes - the OPA602AU/2K5E4 has a maximum input offset voltage of ±3000µV at +25°C, which typically requires external trimming using a 100kΩ potentiometer connected between pins 1 and 8. This adjustment is essential for DC-critical applications like medical ECG amplifiers or precision data converters where residual offset would degrade measurement accuracy beyond acceptable limits for the OPA602AU/2K5E4.
What is the operating temperature range for the OPA602AU/2K5E4?
The OPA602AU/2K5E4 is rated for operation from –25°C to +85°C ambient temperature, matching the specification for its SOIC-8 (D) package variant. This range covers industrial and professional equipment environments but excludes extended automotive or military-grade temperature operation. Storage temperature extends to –40°C to +125°C, and junction temperature must not exceed +175°C during operation of the OPA602AU/2K5E4.
Can the OPA602AU/2K5E4 be used with single-supply configurations?
The OPA602AU/2K5E4 supports single-supply operation down to +5V total supply (e.g., +5V and ground), but its input common-mode range is limited to ±10.2V - meaning true single-supply use requires level-shifting or rail-splitting to maintain valid input voltage headroom. For example, with +12V and ground, the input must stay within 1.8V to 10.2V to avoid clipping; thus the OPA602AU/2K5E4 is most effective in dual-supply systems unless external biasing is implemented.
What is the input voltage noise density of the OPA602AU/2K5E4 at 1kHz?
The OPA602AU/2K5E4 exhibits 13nV/√Hz input voltage noise density at 1kHz, as measured under standard conditions (±15V supplies, +25°C). This value is confirmed in the Electrical Characteristics table and Typical Characteristics plots of the official TI datasheet SBOS155A. The noise performance remains stable across temperature and supply voltage variations, making the OPA602AU/2K5E4 suitable for medium-bandwidth precision amplification where voltage noise dominates system SNR.
OPA602AU/2K5E4 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:
- J-FET
- Number of Circuits:
- 1
- Output Type:
- Single-Ended
- 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/2K5E4 FAQ
1.How can I place an order for OPA602AU/2K5E4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA602AU/2K5E4 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/2K5E4 reliable?
The price and inventory of OPA602AU/2K5E4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA602AU/2K5E4 is usually 5 days.
3.What payment methods are accepted for OPA602AU/2K5E4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA602AU/2K5E4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA602AU/2K5E4?
OPA602AU/2K5E4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA602AU/2K5E4 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/2K5E4?
For technical support, including OPA602AU/2K5E4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA602AU/2K5E4 requirements.
6.How does Aetrix verify that OPA602AU/2K5E4 is sourced from the original manufacturer or authorized distributors?
All OPA602AU/2K5E4 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/2K5E4 meets industry standards.
7.What is the process for return or replacement of OPA602AU/2K5E4?
All OPA602AU/2K5E4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA602AU/2K5E4, 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/2K5E4 part is unused and in its original packaging.
Return procedure for OPA602AU/2K5E4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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