Overview
The THS4281DBVTG4, manufactured by Texas Instruments, is a very low-power, high-speed, rail-to-rail input and output voltage-feedback operational amplifier. This device is designed to operate over a wide power-supply range of 2.7-V to 15-V single supply and ±1.35-V to ±7.5-V dual supply, making it versatile for various applications. It is fabricated using the BiCom-II process, ensuring high performance and low power consumption.
Key Specifications
| Parameter | Value |
|---|---|
| Supply Voltage Range | 2.7-V to 15-V (single supply), ±1.35-V to ±7.5-V (dual supply) |
| Quiescent Current | 750 µA (at 5 V) |
| 3-dB Bandwidth | 90 MHz at Gain = +1, 40 MHz at Gain = +2 |
| Slew Rate | 35 V/µs |
| Settling Time (2-V Step) | 78 ns to 0.1%, 150 ns to 0.01% |
| Common-Mode Input Voltage | Extends 400 mV beyond the rails |
| Output Swing | Within 150 mV from the rails with 1-kΩ loads |
| Input Bias Current | 800 nA (max) |
| Offset Voltage | Less than 2.5 mV (max) |
| Operating Temperature Range | -40°C to 85°C |
| Package Type | SOT-23-5 |
| Number of Pins | 5 |
Key Features
- Very low quiescent current: 750 µA at 5 V
- Rail-to-rail input and output
- Common-mode input voltage extends 400 mV beyond the rails
- High slew rate: 35 V/µs
- Fast settling time: 78 ns to 0.1%, 150 ns to 0.01% for a 2-V step
- Low distortion: High THD of 87 dBc at 100 kHz
- Low offset voltage: Less than 2.5 mV
- Space-saving packages: SOT-23-5, MSOP-8, and SOIC-8
Applications
The THS4281DBVTG4 is suitable for a variety of applications due to its high performance and low power consumption. Key applications include:
- High-side current sensing without phase reversal concerns
- Driving high-resolution analog-to-digital converters (ADCs) sampling less than 2 MSPS
- Low-power input and reference driver circuits
- High-speed and low-distortion signal processing
- General-purpose amplification in battery-powered devices and other low-power systems
Q & A
- What is the supply voltage range of the THS4281DBVTG4?
The supply voltage range is 2.7-V to 15-V for single supply and ±1.35-V to ±7.5-V for dual supply. - What is the quiescent current of the THS4281DBVTG4 at 5 V?
The quiescent current is 750 µA at 5 V. - What is the 3-dB bandwidth of the THS4281DBVTG4?
The 3-dB bandwidth is 90 MHz at Gain = +1 and 40 MHz at Gain = +2. - What is the slew rate of the THS4281DBVTG4?
The slew rate is 35 V/µs. - How fast does the THS4281DBVTG4 settle for a 2-V step?
The settling time is 78 ns to 0.1% and 150 ns to 0.01% for a 2-V step. - What is the common-mode input voltage range of the THS4281DBVTG4?
The common-mode input voltage extends 400 mV beyond the rails. - What is the output swing of the THS4281DBVTG4 with a 1-kΩ load?
The output swings within 150 mV from the rails with a 1-kΩ load. - What is the maximum input bias current of the THS4281DBVTG4?
The maximum input bias current is 800 nA. - What is the maximum offset voltage of the THS4281DBVTG4?
The maximum offset voltage is less than 2.5 mV. - What are the available package types for the THS4281DBVTG4?
The available package types include SOT-23-5, MSOP-8, and SOIC-8.
