Overview
The THS4031IDGN, produced by Texas Instruments, is a high-speed, low-noise voltage feedback operational amplifier. This single-amplifier device is part of the THS403x series, which includes both single and dual-amplifier configurations. The THS4031 is designed for applications requiring ultra-low voltage noise and high-speed performance, making it an excellent choice for communications, imaging, and other demanding fields.
The amplifier offers exceptional ac performance with a 100MHz bandwidth, a 100V/μs slew rate, and a 70ns settling time (0.1%). It is unity-gain stable with a bandwidth of 120MHz and features high drive capability with a typical output current of 200mA while drawing only 7.5mA supply current per channel.
Key Specifications
| Parameter | Typical Value | Unit |
|---|---|---|
| Bandwidth (G = 2, –3dB) | 100 | MHz |
| Slew Rate | 100 | V/μs |
| Voltage Noise | 1.2 | nV/√Hz |
| Total Harmonic Distortion (THD) at f = 1MHz, RL = 150Ω | –81 | dBc |
| Total Harmonic Distortion (THD) at f = 1MHz, RL = 1kΩ | –96 | dBc |
| Input Offset Voltage | 0.3 | mV |
| Output Current Drive | 200 | mA |
| Supply Voltage Range | ±4.5V to ±16V | V |
| Supply Current per Channel | 7.5 | mA |
| Operating Temperature Range | –40 to 85 | °C |
| Package Type | HVSSOP-8 |
Key Features
- Ultra-low 1.2nV/√Hz voltage noise
- High speed: 100MHz bandwidth (G = 2, –3dB) and 100V/μs slew rate
- Very low distortion: THD = –81dBc (f = 1MHz, RL = 150Ω) and THD = –96dBc (f = 1MHz, RL = 1kΩ)
- Low 0.3mV (typical) input offset voltage
- High output current drive capability of 200mA (typical)
- Typical operation from ±4.5V to ±16V supply voltage range
- Offset nulling pins on the THS4031
Applications
- Low-noise, wide-band amplifiers for industrial applications
- Voltage-controlled oscillators
- Active filters
- Video amplifiers
- Cable drivers
- Ultrasound scanners
- Vector signal transceivers (VST)
- Data acquisition (DAQ) systems
- Buffering analog-to-digital converters
Q & A
- What is the typical bandwidth of the THS4031?
The typical bandwidth of the THS4031 is 100MHz at a gain of 2 and –3dB.
- What is the slew rate of the THS4031?
The slew rate of the THS4031 is 100V/μs.
- What is the voltage noise of the THS4031?
The voltage noise of the THS4031 is 1.2nV/√Hz.
- What is the total harmonic distortion (THD) of the THS4031 at 1MHz with a 1kΩ load?
The THD at 1MHz with a 1kΩ load is –96dBc.
- What is the input offset voltage of the THS4031?
The typical input offset voltage of the THS4031 is 0.3mV.
- What is the output current drive capability of the THS4031?
The output current drive capability of the THS4031 is typically 200mA.
- What is the supply voltage range for the THS4031?
The supply voltage range for the THS4031 is from ±4.5V to ±16V.
- What is the operating temperature range of the THS4031?
The operating temperature range of the THS4031 is –40°C to 85°C.
- In what package types is the THS4031 available?
The THS4031 is available in HVSSOP-8 and SOIC-8 packages.
- What are some common applications of the THS4031?
The THS4031 is commonly used in low-noise, wide-band amplifiers, voltage-controlled oscillators, active filters, video amplifiers, cable drivers, ultrasound scanners, vector signal transceivers, and data acquisition systems.
