THS4281DGKG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The THS4281DGKG4 is a single rail-to-rail input/output voltage-feedback operational amplifier from Texas Instruments, operating up to ±8.25V or 16.5V single supply with 85dB minimum CMRR and 0.8µA typical bias current. Features internal frequency compensation in a compact 8-pin VSSOP package. Available with RoHS compliance, competitive pricing, and worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- THS4281DGKG4 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
Key Features
- Rail-to-rail input and output swing on ±8.25V or 16.5V single supply maximizes dynamic range in precision signal processing circuits
- Excellent CMRR of 85dB minimum (107dB typical) ensures outstanding noise rejection in differential measurement and instrumentation applications
- Low input bias current of 0.8µA typical with 3.5mV maximum offset voltage for accurate DC and low-frequency signal conditioning
- Compact 8-pin VSSOP (JEDEC S-PDSO-G8) package with built-in frequency compensation simplifies high-density PCB layout design
Applications
The THS4281DGKG4 is suited for precision instrumentation amplifiers, active filters, and signal conditioning circuits in medical devices, industrial sensors, and test equipment. Its rail-to-rail input/output capability and high CMRR make it ideal for differential signal acquisition from bridge sensors, thermocouples, and strain gauges. The device is also used in data acquisition front-ends, audio circuits, and portable battery-powered measurement instruments requiring wide dynamic range and low power consumption.
Specifications
| YTEOL | 0 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 1 µA |
| Bias Current-Max (IIB) @25C | 0.8 µA |
| Common-mode Reject Ratio-Min | 85dB |
| Common-mode Reject Ratio-Nom | 107dB |
| Frequency Compensation | YES |
| Input Offset Voltage-Max | 3500 µV |
| JESD-30 Code | S-PDSO-G8 |
| JESD-609 Code | e4 |
| Low-Bias | NO |
| Low-Offset | NO |
| Micropower | NO |
| Neg Supply Voltage Limit-Max | -8.25 V |
| Neg Supply Voltage-Nom (Vsup) | -5 V |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power | NO |
| Programmable Power | NO |
| Qualification Status | Not Qualified |
| Slew Rate-Nom | 35V/us |
| Supply Current-Max | 0.9mA |
| Supply Voltage Limit-Max | 8.25V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | BICMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Unity Gain BW-Nom | 95000 |
| Voltage Gain-Min | 17782.79 |
| Wideband | NO |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for THS4281DGKG4:
Amplifier, 1 Func, 2500uV Offset-Max, 3.8MHz Band Width, BICMOS, PDSO8
Amplifier, 1 Func, 2500uV Offset-Max, 3.8MHz Band Width, BICMOS, PDSO8
Frequently Asked Questions
What is the supply voltage range and output swing of the THS4281DGKG4?
The THS4281DGKG4 operates from dual supplies up to ±8.25V or a single supply up to 16.5V. With its rail-to-rail input and output architecture, the output can swing to within millivolts of both supply rails, maximizing the usable dynamic range and making it compatible with low-voltage single-supply systems in portable and battery-powered designs.
What is the CMRR specification of the THS4281DGKG4?
The THS4281DGKG4 achieves a minimum CMRR of 85dB and a typical CMRR of 107dB. This exceptional common-mode rejection allows the amplifier to effectively suppress common-mode interference such as ground noise, power supply ripple, and electromagnetic interference, which is essential in industrial sensor interfaces, medical instrumentation, and differential signal amplification applications.
What package does the THS4281DGKG4 use and what are the key mechanical specs?
The THS4281DGKG4 is housed in an 8-pin VSSOP package (JEDEC S-PDSO-G8), which is a very small outline package measuring approximately 3mm x 3mm. VSSOP offers a smaller footprint than standard SOIC while maintaining standard pitch for reliable soldering, making it ideal for compact analog front-end circuits in portable instruments and wearable devices.
What is the input bias current and offset voltage of the THS4281DGKG4?
The THS4281DGKG4 has a maximum input bias current of 1µA (0.8µA at 25°C) and a maximum input offset voltage of 3.5mV (3500µV). These parameters determine the DC accuracy of the amplifier — the low bias current minimizes errors from source impedance, while the offset voltage sets the baseline DC error that can be trimmed externally in precision applications.
What are typical applications for the THS4281DGKG4 and are there alternatives?
The THS4281DGKG4 is used in precision signal conditioning, bridge amplifiers, active filters, data acquisition system front-ends, and medical sensor interfaces. Comparable alternatives include the OPA2134 and OPA172 from Texas Instruments for higher precision, or the AD8671 from Analog Devices. The THS4281DGKG4 is particularly chosen when rail-to-rail operation and high CMRR are simultaneously required in a compact package.
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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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