OPA633KP Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
Texas Instruments OPA633KP is a high-speed 260 MHz buffer amplifier in a DIP-8 package, with up to ±20V supply, 35 µA max bias current at 25°C, and 25 mV input offset voltage. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- OPA633KP Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -25.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of OPA633KP?
- 260 MHz 3dB bandwidth unity-gain buffer amplifier enabling wideband signal buffering without gain-bandwidth tradeoff
- Operates on supply voltages up to ±20V, making it suitable for high-voltage analog signal chains and test equipment
- DIP-8 through-hole package simplifies prototyping and repair in legacy analog circuits and laboratory instrumentation
What is OPA633KP used for?
The OPA633KP is a high-speed voltage buffer used in analog signal chains where a 260 MHz bandwidth unity-gain stage is needed to isolate source impedance from load, such as in oscilloscope input stages, video distribution amplifiers, and RF signal routing systems. Its ±20V supply range makes it suitable for high-voltage industrial instrumentation and precision measurement equipment where signal rails exceed the ±5V or ±15V found in lower-voltage op-amp designs. The DIP-8 package is commonly used in prototype development, repair of legacy analog boards, and evaluation circuits where through-hole soldering is preferred.
What are the specifications of OPA633KP?
| Pbfree Code | Yes |
| YTEOL | 0 |
| Amplifier Type | BUFFER |
| Average Bias Current-Max (IIB) | 50 µA |
| Bandwidth (3dB)-Nom | 260MHz |
| Bias Current-Max (IIB) @25C | 35 µA |
| Input Offset Voltage-Max | 25000 µV |
| JESD-30 Code | R-PDIP-T8 |
| JESD-609 Code | e4 |
| Neg Supply Voltage Limit-Max | -20 V |
| Neg Supply Voltage-Nom (Vsup) | -12 V |
| Number of Functions | 1 |
| Output Current-Min | 0.08A |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP8,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Qualification Status | Not Qualified |
| Slew Rate-Min | 1000V/us |
| Slew Rate-Nom | 2500V/us |
| Supply Current-Max | 30mA |
| Supply Voltage Limit-Max | 20V |
| Supply Voltage-Nom (Vsup) | 12V |
| Surface Mount | NO |
| Technology | BIPOLAR |
| Temperature Grade | OTHER |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| ## OPA633KP Alternates Showing results | Image |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
Where can I find the OPA633KP datasheet?
OPA633KP Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for OPA633KP?
Compatible alternatives and drop-in replacements for OPA633KP:
suggested
suggested
Frequently Asked Questions
What is the 3dB bandwidth of the OPA633KP and how does it compare to standard op-amp buffers?
The OPA633KP has a 260 MHz 3dB bandwidth in unity-gain buffer configuration, which is significantly higher than general-purpose op-amps like the TL071 (3 MHz) or LM741 (1 MHz). This 260 MHz bandwidth makes the OPA633KP suitable for wideband video and RF signal buffering applications where standard op-amps would introduce unacceptable signal attenuation.
What supply voltage range does the OPA633KP support, and why is this important for high-voltage systems?
The OPA633KP operates with a negative supply voltage up to -20V and corresponding positive supply, spanning a total supply range of up to ±20V. This wide supply range allows the buffer to faithfully reproduce signal swings up to several volts below the rails, which is essential in industrial analog systems, medical instrumentation, and test equipment operating from ±15V or ±12V regulated supplies.
How does the 35 µA maximum bias current of the OPA633KP affect circuit design at high source impedances?
The OPA633KP's maximum input bias current of 35 µA at 25°C (50 µA average max) creates a voltage error when multiplied by source resistance. For example, a 10 kΩ source impedance produces up to 0.5V of offset error from bias current alone, meaning the OPA633KP is best suited for low-impedance sources below 1 kΩ in precision applications, or used with bias current compensation resistors in wideband buffer stages.
When would an engineer select the OPA633KP's DIP-8 package over a surface-mount buffer amplifier?
The DIP-8 package is preferred during prototype development and lab evaluation because it can be inserted directly into breadboards or DIP sockets without soldering, enabling rapid circuit iteration. It is also selected for repair and field service of legacy analog equipment where through-hole PCBs from the 1990s and early 2000s use DIP-8 footprints, and replacement surface-mount equivalents are not pin-compatible.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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