Overview
The LMH6321MR/NOPB is a high-speed unity gain buffer amplifier produced by Texas Instruments. This component is designed to offer high slew rates and wide bandwidth, making it suitable for various high-performance applications. The LMH6321 features a slew rate of 1800 V/µs and a small signal bandwidth of 110 MHz while driving a 50 Ω load. It can continuously drive ±300 mA of output current and is capable of handling large capacitive loads without oscillation. The device also includes an adjustable current limit feature, which can be set using an external reference current with a resistor.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Slew Rate | VIN = ±11 V, RL = 50 Ω | 1800 | V/µs | ||
| Bandwidth | VIN = ±20 mVPP, RL = 50 Ω | 110 | MHz | ||
| Output Current | Continuous | ±300 | mA | ||
| Supply Voltage Range | 5 V to ±15 V | V | |||
| Operating Temperature Range | −40°C to +125°C | °C | |||
| Current Limit Tolerance | ±5 mA ±5% | ||||
| Package Options | 8-pin SO PowerPAD, 7-pin DDPAK |
Key Features
- High slew rate of 1800 V/µs
- Wide bandwidth of 110 MHz
- Continuous output current of ±300 mA
- Adjustable current limit from 10 mA to 300 mA with ±5 mA ±5% accuracy
- High capacitive load drive capability
- Thermal shutdown error flag
- Wide supply voltage range from 5 V to ±15 V
- Wide operating temperature range from −40°C to +125°C
- Available in space-saving 8-pin SO PowerPAD and 7-pin DDPAK packages
Applications
- Line drivers
- Pin drivers
- Sonar drivers
- Motor control
- Boosting current output within the feedback loop of an operational amplifier
- Stand-alone buffer applications
Q & A
- What is the slew rate of the LMH6321?
The LMH6321 has a slew rate of 1800 V/µs when driving a 50 Ω load.
- What is the bandwidth of the LMH6321?
The LMH6321 has a small signal bandwidth of 110 MHz.
- What is the maximum continuous output current of the LMH6321?
The maximum continuous output current is ±300 mA.
- How is the current limit adjusted on the LMH6321?
The current limit is adjusted using an external reference current set by a resistor, allowing for continuous adjustment from 10 mA to 300 mA.
- What are the package options for the LMH6321?
The LMH6321 is available in 8-pin SO PowerPAD and 7-pin DDPAK packages.
- What is the operating temperature range of the LMH6321?
The operating temperature range is from −40°C to +125°C.
- Can the LMH6321 handle large capacitive loads?
Yes, the LMH6321 can drive large capacitive loads without oscillation.
- What is the purpose of the thermal shutdown error flag?
The thermal shutdown error flag indicates when the device has reached a critical temperature, helping in thermal management.
- What are some common applications of the LMH6321?
Common applications include line drivers, pin drivers, sonar drivers, motor control, and boosting current output within the feedback loop of an operational amplifier.
- How does the LMH6321 manage power dissipation?
The LMH6321 features exposed pads on the bottom of the package to increase heat sinking capability, especially in the SO PowerPAD package.
