OPA3684IDG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The OPA3684IDG4 is a low-power triple current-feedback operational amplifier with 210 MHz bandwidth, 10 µA input bias current, and 53 dB CMRR in a small outline package. Available in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- OBSOLETE
- Datasheet
- OPA3684IDG4 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 OPA3684IDG4?
- Triple current-feedback architecture with 210 MHz -3dB bandwidth
- Low input bias current of 10 µA for high-impedance source applications
- 53 dB common-mode rejection ratio for noise-sensitive signal chains
- Three independent amplifiers in a single package reducing BOM
- Input offset voltage maximum 4800 µV for precision-tolerant designs
- Frequency compensation for stable closed-loop operation
- Low quiescent power consumption per channel
- Small outline package for compact multi-channel analog signal processing
What is OPA3684IDG4 used for?
The OPA3684IDG4 is suited for multi-channel video signal distribution, RGB signal buffering, and wideband instrumentation amplifier front-ends where three matched 210 MHz amplifiers are needed in a single footprint. Its current-feedback topology maintains consistent bandwidth across a wide range of closed-loop gains, making it effective for cable driver stages in broadcast equipment and differential line receivers. The low power consumption per channel makes it practical for portable test equipment and multi-channel data acquisition systems.
What are the specifications of OPA3684IDG4?
| YTEOL | 0 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | CURRENT-FEEDBACK |
| Average Bias Current-Max (IIB) | 10 µA |
| Bandwidth (3dB)-Nom | 210MHz |
| Bias Current-Max (IIB) @25C | 10 µA |
| Common-mode Reject Ratio-Min | 53dB |
| Common-mode Reject Ratio-Nom | 52dB |
| Frequency Compensation | YES |
| Input Offset Voltage-Max | 4800 µV |
| JESD-30 Code | R-PDSO-G14 |
| 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 | 3 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power | NO |
| Programmable Power | NO |
| Qualification Status | Not Qualified |
| Slew Rate-Min | 285V/us |
| Slew Rate-Nom | 820V/us |
| Supply Current-Max | 1.8mA |
| 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 | 250000 |
| Wideband | YES |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
| Country of Origin | Malaysia |
Where can I find the OPA3684IDG4 datasheet?
OPA3684IDG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for OPA3684IDG4?
Compatible alternatives and drop-in replacements for OPA3684IDG4:
Amplifier, 3 Func, 4800uV Offset-Max, 210MHz Band Width, BIPolar, PDSO14
Frequently Asked Questions
How does the current-feedback topology of OPA3684IDG4 maintain bandwidth at higher closed-loop gains?
Unlike voltage-feedback amplifiers that show gain-bandwidth product tradeoffs, the OPA3684IDG4 current-feedback topology maintains its 210 MHz bandwidth relatively constant across different closed-loop gain settings. This allows the triple amplifier to drive video and wideband signals at gains above unity without the bandwidth compression that limits voltage-feedback designs in RGB signal buffering and cable driver applications.
For a three-channel analog front-end design, what system-level benefits does OPA3684IDG4 offer over three discrete amplifiers?
Integrating three 210 MHz current-feedback amplifiers in a single package reduces PCB area by approximately 60% compared to three discrete SO-8 amplifiers, while also improving channel-to-channel gain matching and thermal tracking. The shared package with 53 dB CMRR per channel ensures consistent signal integrity across all 3 channels in multi-channel ADC driver and video distribution applications.
What is the input bias current specification of OPA3684IDG4 and how does it affect source impedance requirements?
The OPA3684IDG4 has a maximum input bias current of 10 µA at 25°C, which creates a voltage error of 10 mV across a 1 kΩ source impedance. Designers driving the amplifier from high-impedance sources above 10 kΩ should account for this bias current contribution to the input offset budget, especially in DC-coupled signal chains operating across the full temperature range.
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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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