Overview
The THS3091, produced by Texas Instruments, is a high-voltage, low-distortion, high-speed current-feedback operational amplifier. This device is designed to operate over a wide supply range of ±5 V to ±16 V, making it suitable for applications requiring large, linear output signals. The THS3091 is available in 8-pin SOIC (DDA) PowerPAD™ and 8-pin HVSSOP (DGN) packages, offering flexibility in design and implementation.
Key Specifications
| Parameter | Test Conditions | Typical Value | Unit |
|---|---|---|---|
| Small-signal bandwidth, –3 dB | G = 2, RF = 1.21 kΩ, VO = 200 mVPP | 305 MHz | MHz |
| Slew rate (10% to 90% level) | G = 5, VO = 20-V step, RF = 1 kΩ | 6000 V/μs | V/μs |
| Output current | RL = 40 Ω, TA = 25°C | ±310 mA | mA |
| Common-mode input range | TA = 25°C | ±13.3 V | V |
| Common-mode rejection ratio | VCM = ±10 V, TA = 25°C | 78 dB | dB |
| Quiescent current | TA = 25°C | 9.5 mA | mA |
| Operating free-air temperature | –40 to 85 °C | °C | |
| Junction-to-ambient thermal resistance | DDA package | 58.4 °C/W | °C/W |
Key Features
- Low distortion: 84-dBc HD2 and 99-dBc HD3 at 10 MHz, RL = 1 kΩ
- Low noise: 15-pA/√Hz noninverting current noise, 14-pA/√Hz inverting current noise, and 1.1-nV/√Hz voltage noise
- High slew rate: 6000 V/μs (G = 5, VO = 20 VPP)
- Wide bandwidth: Up to 305 MHz (G = 2, RL = 100 Ω)
- High output current drive: ±310 mA
- Wide supply range: ±5 V to ±16 V
- No power-down feature (specific to THS3091; THS3095 has this feature)
Applications
- High-voltage arbitrary waveform generators
- Pin drivers
- Power-FET drivers
- Source measurement units (SMUs)
- High capacitive load piezo element drivers
Q & A
- What is the typical small-signal bandwidth of the THS3091? The typical small-signal bandwidth of the THS3091 is 305 MHz at G = 2, RF = 1.21 kΩ, and VO = 200 mVPP.
- What is the slew rate of the THS3091? The slew rate of the THS3091 is 6000 V/μs for G = 5 and VO = 20 VPP.
- What is the output current capability of the THS3091? The THS3091 can drive up to ±310 mA of output current.
- What is the common-mode input range of the THS3091? The common-mode input range is ±13.3 V at TA = 25°C.
- Does the THS3091 have a power-down feature? No, the THS3091 does not have a power-down feature; this feature is available in the THS3095 model.
- What are the typical operating temperatures for the THS3091? The operating free-air temperature range is –40 to 85 °C.
- What packages are available for the THS3091? The THS3091 is available in 8-pin SOIC (DDA) PowerPAD™ and 8-pin HVSSOP (DGN) packages.
- What are some common applications of the THS3091? Common applications include high-voltage arbitrary waveform generators, pin drivers, power-FET drivers, source measurement units (SMUs), and high capacitive load piezo element drivers.
- What is the junction-to-ambient thermal resistance for the DDA package? The junction-to-ambient thermal resistance for the DDA package is 58.4 °C/W.
- How does the THS3091 handle noise? The THS3091 has low noise characteristics, including 15-pA/√Hz noninverting current noise, 14-pA/√Hz inverting current noise, and 1.1-nV/√Hz voltage noise.
