Overview
The THS3091DDAR, produced by Texas Instruments, is a high-voltage, low-distortion, high-speed current-feedback operational amplifier. This device is part of the THS309x series, which includes the THS3091 and THS3095 models. The THS3091DDAR is particularly suited for applications requiring large, linear output signals and high slew rates. It operates over a wide supply range of ±5 V to ±16 V, making it versatile for various high-voltage applications.
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 drive | RL = 40 Ω, TA = 25°C | ±310 mA | mA |
| Output voltage swing | RL = 1 kΩ, TA = 25°C | ±13.2 V | V |
| Common-mode input range | TA = 25°C | ±13.6 V | V |
| Noninverting input noise | 15 pA/√Hz | pA/√Hz | |
| Voltage noise | 1.1 nV/√Hz | nV/√Hz | |
| Quiescent current | TA = 25°C | 9.5 mA | mA |
| Operating temperature range | –40°C to +85°C | °C |
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: 305 MHz (G = 2, RL = 100 Ω).
- High Output Current Drive: ±310 mA.
- Wide Supply Range: ±5 V to ±16 V.
- Power-Down Feature (THS3095 only): Reduces quiescent current to 500 μA in standby mode.
Applications
- High-Voltage Arbitrary Waveform Generators: Ideal for generating high-voltage, high-frequency signals.
- Pin Drivers: Suitable for driving high-capacitive loads and low-resistance loads.
- Power-FET Drivers: Capable of handling large voltage swings and high current drive.
- Source Measurement Units (SMU): Used in precision measurement and testing equipment.
- High Capacitive Load Piezo Element Drivers: Effective for driving piezo elements in various applications.
Q & A
- What is the typical small-signal bandwidth of the THS3091DDAR?
The typical small-signal bandwidth is 305 MHz at G = 2, RF = 1.21 kΩ, and VO = 200 mVPP.
- What is the slew rate of the THS3091DDAR?
The slew rate is 6000 V/μs at G = 5 and VO = 20 VPP.
- What is the output current drive capability of the THS3091DDAR?
The output current drive is ±310 mA at RL = 40 Ω and TA = 25°C.
- What is the common-mode input range of the THS3091DDAR?
The common-mode input range is ±13.6 V at TA = 25°C.
- Does the THS3091DDAR have a power-down feature?
No, the power-down feature is available only in the THS3095 model.
- What are the typical operating temperatures for the THS3091DDAR?
The operating temperature range is –40°C to +85°C.
- What is the quiescent current of the THS3091DDAR?
The quiescent current is typically 9.5 mA at TA = 25°C.
- What are some common applications for the THS3091DDAR?
Common applications include high-voltage arbitrary waveform generators, pin drivers, power-FET drivers, source measurement units, and high capacitive load piezo element drivers).
- What package types are available for the THS3091?
The THS3091 is available in 8-pin SOIC (DDA) PowerPAD and 8-pin HVSSOP (DGN) packages).
- What is the voltage noise of the THS3091DDAR?
The voltage noise is 1.1 nV/√Hz).
