Overview
The BUF634AIDRBR, produced by Texas Instruments, is a high-performance, high-fidelity, open-loop buffer. This device is capable of driving up to 250 mA of output current and features an adjustable bandwidth ranging from 35 MHz to 210 MHz. It can be used as a standalone open-loop driver or integrated into the feedback loop of a precision op-amp to enhance output current and capacitive load drive. The BUF634AIDRBR operates over a wide supply range of ±2.25 V to ±18 V and is designed for low-power applications with a quiescent current as low as 1.5 mA. It includes internal output current limiting and thermal shutdown protection, making it rugged and reliable. The device is available in various packages, including the DRB (VSON) package with a thermal pad for improved thermal performance.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Bandwidth, –3 dB | 35 MHz (RL = 1 kΩ) | - | 210 MHz (RL = 100 Ω) | MHz |
| Slew Rate | - | 3750 | - | V/µs |
| Output Current, Continuous | - | - | ±250 mA | mA |
| Short-Circuit Current | ±350 | - | ±550 | mA |
| Supply Voltage Range | ±2.25 V | - | ±18 V | V |
| Quiescent Current | 1.5 mA (35-MHz BW) | 2.3 mA (35-MHz BW) | - | mA |
| Thermal Shutdown Temperature | - | - | 180 ℃ | ℃ |
| Operating Temperature Range | -40 ℃ | - | 125 ℃ | ℃ |
Key Features
- Pin-selected bandwidth: 35 MHz to 210 MHz
- High output current: up to ±250 mA
- High slew rate: 3750 V/µs
- Low quiescent current: 1.5 mA (35-MHz BW)
- Wide supply range: ±2.25 V to ±18 V
- Internal output current limit and thermal shutdown protection
- Available in packages with thermal pad for improved thermal performance
- Extended temperature operation: –40°C to +125°C
Applications
- Memory and semiconductor testers
- Test equipment
- Headphone drivers
- Flight control systems
- Capacitive load drivers
- Valve and solenoid drivers
- Line drivers
Q & A
- What is the maximum output current of the BUF634AIDRBR?
The BUF634AIDRBR can deliver up to ±250 mA of continuous output current.
- How can the bandwidth of the BUF634AIDRBR be adjusted?
The bandwidth can be adjusted by connecting a resistor between the V– and BW pins.
- What is the slew rate of the BUF634AIDRBR?
The slew rate of the BUF634AIDRBR is 3750 V/µs.
- What is the quiescent current of the BUF634AIDRBR in low-power mode?
The quiescent current in low-power mode (35-MHz bandwidth) is 1.5 mA.
- What is the operating temperature range of the BUF634AIDRBR?
The operating temperature range is –40°C to +125°C.
- Does the BUF634AIDRBR have thermal protection?
Yes, the BUF634AIDRBR features internal output current limiting and thermal shutdown protection.
- In what packages is the BUF634AIDRBR available?
The BUF634AIDRBR is available in D (SOIC), DRB (VSON), and DDA (HSOIC) packages, with the DRB and DDA packages including a thermal pad for improved thermal performance.
- What are some common applications of the BUF634AIDRBR?
Common applications include memory and semiconductor testers, test equipment, headphone drivers, flight control systems, capacitive load drivers, and valve and solenoid drivers.
- How does the BUF634AIDRBR handle capacitive loads?
The BUF634AIDRBR is designed to improve capacitive load drive, making it suitable for applications requiring high current drive into capacitive loads.
- Can the BUF634AIDRBR be used in safety-critical applications?
While the BUF634AIDRBR is robust, its use in safety-critical applications should be carefully evaluated and validated according to specific safety standards and requirements.
