OPA642UB Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments OPA642UB is a wideband, low-distortion voltage-feedback operational amplifier with 400 MHz bandwidth, 90 dB CMRR, and 45 µA typical bias current in an 8-SOIC package. Ideal for high-speed analog signal processing. Available in stock worldwide with competitive pricing and fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- OPA642UB Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of OPA642UB?
- Wideband voltage-feedback op-amp architecture with 400 MHz gain-bandwidth product for high-speed analog signal chains
- Low input offset current of 3 µA max and 90 dB nominal CMRR for precision high-frequency differential signal acquisition
- 8-SOIC package with internal frequency compensation enables simple, space-efficient PCB layouts at GHz-range signal bandwidths
What is OPA642UB used for?
The OPA642UB is suited for wideband active filter stages, video signal amplification, and high-speed data acquisition front ends where low distortion and 400 MHz bandwidth are required. It is also applied in RF signal conditioning, optical receiver transimpedance stages, and test-and-measurement instrumentation where the 90 dB CMRR and 45 µA bias current performance enable accurate amplification of differential high-frequency signals.
What are the specifications of OPA642UB?
| Pbfree Code | No |
| YTEOL | 0 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 70 µA |
| Bias Current-Max (IIB) @25C | 45 µA |
| Common-mode Reject Ratio-Min | 80dB |
| Common-mode Reject Ratio-Nom | 90dB |
| Frequency Compensation | YES |
| Input Offset Current-Max (IIO) | 3 µA |
| Input Offset Voltage-Max | 1000 µV |
| JESD-30 Code | R-PDSO-G5 |
| Low-Bias | NO |
| Low-Offset | NO |
| Micropower | NO |
| Neg Supply Voltage Limit-Max | -6 V |
| Neg Supply Voltage-Nom (Vsup) | -5 V |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8(UNSPEC) |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Power | NO |
| Programmable Power | NO |
| Qualification Status | Not Qualified |
| Slew Rate-Nom | 380V/us |
| Supply Current-Max | 26mA |
| Supply Voltage Limit-Max | 6V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Temperature Grade | INDUSTRIAL |
| Terminal Form | GULL WING |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Unity Gain BW-Nom | 210000 |
| Voltage Gain-Min | 17782.7941 |
| Wideband | YES |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
Where can I find the OPA642UB datasheet?
OPA642UB Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for OPA642UB?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What bandwidth and CMRR specification does the OPA642UB offer for high-speed differential signal amplification?
The OPA642UB provides a 400 MHz gain-bandwidth product and a typical CMRR of 90 dB (minimum 80 dB), making it well-suited for differential video, RF, and measurement-grade signal conditioning. At these parameters, it suppresses common-mode noise by 90 dB while amplifying differential signals across the full 400 MHz bandwidth.
How does the OPA642UB's bias current specification impact photodiode or high-impedance sensor front-end designs?
The OPA642UB has a maximum input bias current of 70 µA at 25 °C and a typical value of 45 µA. For high-impedance sensor or transimpedance amplifier designs, this relatively high bias current can produce an offset voltage across feedback resistors in the kΩ range, so a feedback resistor below 10 kΩ is recommended to keep offset error below 1 mV.
When is the OPA642UB preferred over a lower-bandwidth op-amp in active filter designs?
For active filter designs with a corner frequency above 10 MHz, an op-amp with at least 10x the filter bandwidth in gain-bandwidth product is needed to prevent phase error and gain peaking. The OPA642UB's 400 MHz GBW supports accurate Butterworth or Chebyshev filter implementations up to 40 MHz, which is 4x to 10x more headroom than a standard 100 MHz voltage-feedback amplifier provides in the same 8-SOIC package.
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Why Buy from FindMyChip
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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