Overview
The BUF634PG4, produced by Texas Instruments, is a high-speed, unity-gain, open-loop buffer designed for a wide range of applications. It is particularly useful for increasing the output current of operational amplifiers, eliminating thermal feedback, and improving capacitive load drive. The device operates with a low quiescent current of 1.5mA and can deliver up to 250mA of continuous output current. The BUF634PG4 features adjustable bandwidth from 30MHz to 180MHz, making it versatile for various high-speed applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Current | ±250 | mA |
| Slew Rate | 2000 | V/µs |
| Bandwidth | 30MHz to 180MHz | |
| Quiescent Current | 1.5 | mA (30MHz BW) |
| Supply Voltage Range | ±2.25V to ±18V | |
| Input Offset Voltage | ±30 to ±100 | mV |
| Input Bias Current | ±0.5 to ±20 | µA |
| Input Impedance | 80 || 8 MΩ || pF | |
| Noise Voltage | 4 | nV/√Hz |
| Gain | 0.95 to 0.99 | V/V |
| Packages | 5-pin SOIC, 5-pin TO-220, 5-pin TO-263 |
Key Features
- High output current: up to ±250mA
- High slew rate: 2000V/µs
- Pin-selected bandwidth: adjustable from 30MHz to 180MHz
- Low quiescent current: 1.5mA (30MHz BW)
- Wide supply range: ±2.25V to ±18V
- Internal current limit and thermal shutdown protection
- Available in 5-pin SOIC, 5-pin TO-220, and 5-pin TO-263 surface-mount packages
Applications
- Valve driver
- Solenoid driver
- Op amp current booster
- Line driver
- Headphone driver
- Video driver
- Motor driver
- Test equipment
- ATE pin driver
Q & A
- What is the maximum output current of the BUF634PG4?
The BUF634PG4 can deliver up to ±250mA of continuous output current.
- What is the slew rate of the BUF634PG4?
The slew rate of the BUF634PG4 is 2000V/µs.
- How can the bandwidth of the BUF634PG4 be adjusted?
The bandwidth can be adjusted from 30MHz to 180MHz by connecting a resistor between V– and the BW pin.
- What is the quiescent current of the BUF634PG4 in 30MHz bandwidth mode?
The quiescent current is 1.5mA in 30MHz bandwidth mode.
- What is the supply voltage range for the BUF634PG4?
The supply voltage range is ±2.25V to ±18V.
- Does the BUF634PG4 have internal protection features?
Yes, it has internal current limit and thermal shutdown protection.
- In what packages is the BUF634PG4 available?
The BUF634PG4 is available in 5-pin SOIC, 5-pin TO-220, and 5-pin TO-263 surface-mount packages.
- Can the BUF634PG4 be used to boost the output current of operational amplifiers?
Yes, it can be used inside the feedback loop of op amps to increase output current.
- What are some common applications of the BUF634PG4?
Common applications include valve drivers, solenoid drivers, op amp current boosters, line drivers, headphone drivers, video drivers, motor drivers, test equipment, and ATE pin drivers.
- Is there a newer version of the BUF634PG4 available?
Yes, a newer version called the BUF634A is available with enhanced specifications.
