OPA2691IDG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
OPA2691IDG4 is a dual wideband current-feedback operational amplifier optimized for high-speed signal processing, featuring 50 dB minimum CMRR and 20 µA bias current at 25°C. Housed in an 8-Pin SOIC, it delivers stable gain-bandwidth performance for video and RF buffer stages.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- OPA2691IDG4 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 OPA2691IDG4?
- Dual current-feedback architecture enabling wideband operation with stable closed-loop bandwidth independent of gain setting
- 20 µA typical input bias current at 25°C with 56 dB typical CMRR for high-speed differential signal chains
- 4.3 mV max input offset voltage in a compact 8-Pin SOIC package suitable for video and RF applications
What is OPA2691IDG4 used for?
OPA2691IDG4 is designed for high-speed video distribution amplifiers, cable driver stages, and wideband ADC input buffers where current-feedback topology provides flat gain response across wide bandwidths. Its dual channel configuration makes it efficient for differential signal processing and I/Q signal chains in communications and test equipment.
What are the specifications of OPA2691IDG4?
| YTEOL | 0 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | CURRENT-FEEDBACK |
| Average Bias Current-Max (IIB) | 45 µA |
| Bias Current-Max (IIB) @25C | 20 µA |
| Common-mode Reject Ratio-Min | 50dB |
| Common-mode Reject Ratio-Nom | 56dB |
| Frequency Compensation | YES |
| Input Offset Voltage-Max | 4300 µV |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e4 |
| Low-Bias | NO |
| Low-Offset | NO |
| Micropower | NO |
| Neg Supply Voltage Limit-Max | -6.5 V |
| Neg Supply Voltage-Nom (Vsup) | -5 V |
| Number of Functions | 2 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | RAIL |
| Peak Reflow Temperature (Cel) | 260 |
| Power | NO |
| Programmable Power | NO |
| Qualification Status | Not Qualified |
| Slew Rate-Min | 1350V/us |
| Slew Rate-Nom | 2100V/us |
| Supply Current-Max | 11.5mA |
| Supply Voltage Limit-Max | 6.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Unity Gain BW-Nom | 280000 |
| Wideband | YES |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
Where can I find the OPA2691IDG4 datasheet?
OPA2691IDG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for OPA2691IDG4?
Compatible alternatives and drop-in replacements for OPA2691IDG4:
Frequently Asked Questions
Why does OPA2691IDG4 use current-feedback architecture instead of voltage-feedback for wideband applications?
Current-feedback amplifiers like OPA2691IDG4 maintain nearly constant bandwidth as closed-loop gain increases, unlike voltage-feedback amplifiers that suffer gain-bandwidth product limitations, making them superior for wideband video and RF buffer stages operating above 100 MHz.
How does OPA2691IDG4's 20 µA input bias current affect precision DC-coupled signal chain designs?
At 20 µA bias current, OPA2691IDG4 introduces a DC offset voltage proportional to source resistance — for example a 100 ohm source adds 2 mV offset — so designers must account for this in precision DC paths while the device excels in AC-coupled wideband applications.
For driving a 50-ohm coaxial cable from a DAC output, how many OPA2691IDG4 channels are available and what gain configuration is typical?
OPA2691IDG4 provides 2 independent amplifier channels in a single 8-Pin SOIC, allowing both a non-inverting buffer and an inverting driver to be implemented together; a gain of +2 V/V is typical for back-terminated 50-ohm cable drive, delivering the full output swing with matched impedance.
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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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