OPA861IDBVTG4 Texas Instruments Integrated Circuit (SOT23 (6-Pin)) In Stock
OPA861IDBVTG4 is a wide-bandwidth operational transconductance amplifier (OTA) with 80 MHz bandwidth, 5 µA input bias current, and a voltage-feedback architecture suitable for current-output signal processing. It is housed in a compact 6-pin SOT-23 package ideal for portable and high-frequency designs. Available from stock worldwide with fast shipping.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (6-Pin)
- Pin Count
- 6
- Lifecycle
- OBSOLETE
- Datasheet
- OPA861IDBVTG4 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 OPA861IDBVTG4?
- 80 MHz wide bandwidth enabling high-speed current-mode signal processing and filtering
- Operational transconductance amplifier architecture converting voltage input directly to current output
- 5 µA input bias current at 25°C for compatibility with moderate-impedance signal sources
- Voltage-feedback topology with internal frequency compensation for stable closed-loop operation
- Compact 6-pin SOT-23 package minimizing PCB footprint in portable and density-constrained designs
- 20 mV maximum input offset voltage for predictable DC operating point in open-loop circuits
What is OPA861IDBVTG4 used for?
The OPA861IDBVTG4 is designed for high-frequency current-mode signal processing applications such as transimpedance amplifiers for photodiode receivers, cable equalizers, and active filter stages operating up to 80 MHz. Its transconductance architecture makes it well-suited for voltage-controlled current source (VCCS) circuits used in precision test equipment, signal generators, and impedance measurement systems. The compact SOT-23 package enables its use in space-constrained portable instruments and high-density analog front-end boards.
What are the specifications of OPA861IDBVTG4?
| YTEOL | 0 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 6.6 µA |
| Bias Current-Max (IIB) @25C | 5 µA |
| Frequency Compensation | YES |
| Input Offset Voltage-Max | 20000 µV |
| JESD-30 Code | R-PDSO-G6 |
| 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 | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSOP6,.11,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Power | NO |
| Programmable Power | NO |
| Qualification Status | Not Qualified |
| Slew Rate-Min | 840V/us |
| Slew Rate-Nom | 900V/us |
| Supply Current-Max | 7.4mA |
| 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 | 0.95mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Unity Gain BW-Nom | 80000 |
| Wideband | YES |
| Package | SOT23 (6-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
Where can I find the OPA861IDBVTG4 datasheet?
OPA861IDBVTG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for OPA861IDBVTG4?
Compatible alternatives and drop-in replacements for OPA861IDBVTG4:
Operational Amplifier, 1 Func, 20000uV Offset-Max, 80MHz Band Width, BIPolar, PDSO6
Frequently Asked Questions
What is the bandwidth of the OPA861IDBVTG4, and what signal frequency ranges does it support?
The OPA861IDBVTG4 has a wide bandwidth of 80 MHz, supporting high-frequency analog signal processing tasks such as photodiode transimpedance amplification, cable equalization, and active filter designs operating from audio frequencies up to RF front-end applications in the tens of megahertz range.
How does the transconductance architecture of the OPA861IDBVTG4 differ from a standard voltage-output op-amp in a signal processing circuit?
Unlike a conventional op-amp that outputs voltage, the OPA861IDBVTG4 directly converts an input voltage to an output current with a defined transconductance, enabling voltage-controlled current source (VCCS) designs, current-mode filters, and impedance converters — all without a traditional feedback resistor setting output voltage swing, and with 80 MHz small-signal bandwidth.
What input bias current does the OPA861IDBVTG4 draw, and how does that constrain source impedance in a circuit design?
The OPA861IDBVTG4 draws up to 5 µA of input bias current at 25°C (6.6 µA maximum over temperature), which creates a DC voltage error across source impedances above approximately 1 kΩ. Designers should keep source impedance below a few kilohms or use bias current compensation techniques to maintain input offset below the 20 mV maximum limit.
For a compact portable photodiode receiver PCB, how does the SOT-23 package of the OPA861IDBVTG4 compare to a standard SOIC-8 op-amp footprint?
The 6-pin SOT-23 package occupies roughly 5 mm² of PCB area, compared to around 19 mm² for a typical SOIC-8, saving over 70% of the board footprint. Combined with the 80 MHz bandwidth, this makes the OPA861IDBVTG4 a practical choice for dense photodiode receiver or high-frequency analog front-end designs in portable instruments.
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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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