LM119H-QMLV datasheet by Texas Instruments

LM119H-QMLV Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal performance of the LM119H-QMLV?
  Texas Instruments recommends a layout that minimizes parasitic inductance and capacitance, with a solid ground plane and short, direct traces to the input and output pins. A 4-layer PCB with a dedicated power plane and a separate ground plane is also recommended.
• How do I ensure the LM119H-QMLV is properly biased for high-speed operation?
  To ensure proper biasing, the LM119H-QMLV requires a minimum of 10mA of quiescent current (Iq) to maintain high-speed operation. This can be achieved by adding a pull-up resistor to the output stage or by using an external bias circuit.
• What is the maximum operating temperature range for the LM119H-QMLV?
  The LM119H-QMLV is rated for operation from -55°C to 125°C, but it's recommended to derate the device for operation above 100°C to ensure reliability and performance.
• How do I handle ESD protection for the LM119H-QMLV?
  The LM119H-QMLV has built-in ESD protection, but it's still recommended to add external ESD protection devices, such as TVS diodes or ESD arrays, to protect the device from electrostatic discharge events.
• What is the recommended power supply decoupling for the LM119H-QMLV?
  Texas Instruments recommends using a combination of ceramic and electrolytic capacitors for power supply decoupling, with a minimum of 10uF of capacitance per supply pin. The capacitors should be placed as close as possible to the device pins.