Overview
The THS3121IDGNR is a high-performance, low-noise, current-feedback operational amplifier produced by Texas Instruments. This device is designed to offer high output drive capability, wide bandwidth, and excellent distortion characteristics, making it suitable for a variety of high-speed applications. The THS3121IDGNR is available in an 8-MSOP (DGN) PowerPAD™ package, which enhances thermal performance and reduces the footprint on the PCB.
Key Specifications
| Parameter | Value | Unit | Conditions |
|---|---|---|---|
| Small-signal bandwidth, –3 dB | 130 MHz (G = 1), 120 MHz (G = 2) | MHz | RF = 649 Ω, RL = 50 Ω, VS = ±15 V |
| 0.1-dB bandwidth flatness | 90 MHz | MHz | RF = 649 Ω, RL = 50 Ω, VS = ±15 V |
| Slew Rate | 1700 V/μs | V/μs | RL = 50 Ω, VO = 8 VPP |
| Input Offset Current | ±4 μA (max) | μA | VCM = 0 V |
| Input Common-Mode Voltage Range | ±12.7 V (min) | V | VS = ±15 V |
| Output Voltage Swing | ±14 V (min) @ RL = 1 kΩ | V | RL = 1 kΩ, VS = ±15 V |
| Output Current (Sourcing) | 475 mA (min) @ RL = 25 Ω | mA | RL = 25 Ω, VS = ±15 V |
| Output Current (Sinking) | 490 mA (min) @ RL = 25 Ω | mA | RL = 25 Ω, VS = ±15 V |
| Quiescent Current | 7 mA (typ), 11 mA (max) | mA | VS = ±15 V |
| Operating Temperature Range | –40°C to +85°C | °C | |
| Package Type | 8-MSOP (DGN) PowerPAD™ |
Key Features
- Low Noise: 1 pA/√Hz noninverting current noise, ensuring high signal integrity.
- High Output Drive: Capable of sourcing and sinking high currents, up to 475 mA and 490 mA respectively.
- Wide Bandwidth: Small-signal bandwidth of up to 130 MHz and 0.1-dB bandwidth flatness of 90 MHz.
- High Slew Rate: 1700 V/μs, suitable for high-frequency applications.
- Wide Supply Range: Operates from ±5 V to ±15 V, providing flexibility in system design.
- PowerPAD™ Package: Enhances thermal performance and reduces PCB footprint.
Applications
- Video Distribution: Ideal for video amplification and distribution due to its high bandwidth and low distortion.
- Power FET Driver: Suitable for driving power FETs in various power management applications.
- Pin Driver: Used in driving high-impedance loads such as pins in various electronic systems.
- Capacitive Load Driver: Capable of driving capacitive loads without oscillation.
Q & A
- What is the typical small-signal bandwidth of the THS3121IDGNR?
The typical small-signal bandwidth is 130 MHz for a gain of 1 and 120 MHz for a gain of 2.
- What is the slew rate of the THS3121IDGNR?
The slew rate is 1700 V/μs.
- What is the operating temperature range of the THS3121IDGNR?
The operating temperature range is –40°C to +85°C.
- What is the package type of the THS3121IDGNR?
The package type is 8-MSOP (DGN) PowerPAD™.
- What are the typical output currents for the THS3121IDGNR?
The typical output current for sourcing is 475 mA and for sinking is 490 mA at RL = 25 Ω.
- What is the input offset current of the THS3121IDGNR?
The input offset current is ±4 μA (max).
- What are the common applications of the THS3121IDGNR?
Common applications include video distribution, power FET driving, pin driving, and capacitive load driving.
- What is the quiescent current of the THS3121IDGNR?
The quiescent current is typically 7 mA and a maximum of 11 mA.
- Does the THS3121IDGNR have a power-down feature?
No, the THS3121IDGNR does not have a power-down feature; this feature is available only in the THS3120 model.
- What is the input common-mode voltage range of the THS3121IDGNR?
The input common-mode voltage range is ±12.7 V (min).
