Overview
The THS3121IDGNG4, produced by Texas Instruments, is a low-noise, high-output drive, current-feedback operational amplifier. This device is designed to operate over a wide supply range of ±5 V to ±15 V, making it suitable for high-performance applications. The THS3121 is known for its high slew rate, wide bandwidth, and high output current drive, which are critical for applications requiring precise and robust signal amplification.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range | ±5 V to ±15 V | V |
| Output Current (Sourcing) | 475 mA | mA |
| Output Current (Sinking) | 490 mA | mA |
| Slew Rate | 1700 V/μs | V/μs |
| Bandwidth (G = 2, RL = 50 Ω) | 120 MHz | MHz |
| Input Noise (Voltage) | 2.5 nV/√Hz | nV/√Hz |
| Input Noise (Noninverting Current) | 1 pA/√Hz | pA/√Hz |
| Input Noise (Inverting Current) | 10 pA/√Hz | pA/√Hz |
| Operating Temperature Range | –40°C to +85°C | °C |
| Package Type | 8-MSOP (DGN) PowerPAD |
Key Features
- Low Noise: 2.5 nV/√Hz voltage noise, 1 pA/√Hz noninverting current noise, and 10 pA/√Hz inverting current noise.
- High Output Current Drive: Up to 475 mA sourcing and 490 mA sinking.
- High Slew Rate: 1700 V/μs.
- Wide Bandwidth: Up to 120 MHz at a gain of 2.
- Wide Supply Range: Operates from ±5 V to ±15 V.
- Power-Down Feature (THS3120 only): Reduces quiescent current when the device is not active.
Applications
- Video Distribution: Suitable for video signal amplification due to its high bandwidth and low noise.
- Power FET Driver: High output current drive makes it ideal for driving power FETs.
- Pin Driver: Can be used to drive high-capacitive loads.
- Capacitive Load Driver: Effective in applications requiring the amplification of signals with high capacitive loads.
Q & A
- What is the supply voltage range of the THS3121IDGNG4? The supply voltage range is ±5 V to ±15 V.
- What is the maximum output current of the THS3121IDGNG4? The maximum output current is 475 mA sourcing and 490 mA sinking.
- What is the slew rate of the THS3121IDGNG4? The slew rate is 1700 V/μs.
- What is the bandwidth of the THS3121IDGNG4 at a gain of 2? The bandwidth is up to 120 MHz.
- What are the key noise specifications of the THS3121IDGNG4? The device has 2.5 nV/√Hz voltage noise, 1 pA/√Hz noninverting current noise, and 10 pA/√Hz inverting current noise.
- What is the operating temperature range of the THS3121IDGNG4? The operating temperature range is –40°C to +85°C.
- In what package types is the THS3121IDGNG4 available? It is available in an 8-MSOP (DGN) PowerPAD package.
- Does the THS3121IDGNG4 have a power-down feature? No, the power-down feature is available only in the THS3120 model.
- What are some common applications of the THS3121IDGNG4? Common applications include video distribution, power FET driver, pin driver, and capacitive load driver.
- How does the THS3121IDGNG4 handle high capacitive loads? It is effective in handling high capacitive loads due to its high output current drive and wide bandwidth.
