Overview
The LF198H/NOPB, produced by Texas Instruments (formerly National Semiconductor), is a monolithic sample-and-hold circuit. This device utilizes BI-FET technology to achieve ultrahigh DC accuracy, fast acquisition of signals, and a low droop rate. It operates as a unity-gain follower, offering high DC gain accuracy and rapid acquisition times. The LF198H is designed for applications requiring precise signal sampling and holding, making it suitable for various high-performance electronic systems.
Key Specifications
| Specification | Value |
|---|---|
| Package | TO-99-8 Metal Can |
| Pins | 8 |
| Operating Temperature Range (°C) | -55 to 125 |
| Supply Voltage (±) | ±5 V to ±18 V |
| Acquisition Time | Less than 10 µs |
| Input Offset Voltage | 1 mV |
| Input Bias Current | 5 nA |
| Supply Current | 4.5 mA |
| Mounting Type | Through Hole |
Key Features
- Operates from ±5-V to ±18-V supplies
- Less than 10-µs acquisition time
- Logic input compatible with TTL, PMOS, CMOS
- 0.5-mV typical hold step at Ch = 0.01 µF
- Low input offset and low output noise in hold mode
- High supply rejection ratio in sample or hold mode
- Wide bandwidth
- Space qualified, JM38510
- P-channel junction FETs combined with bipolar devices for low droop rates and low noise
Applications
The LF198H/NOPB is suitable for a variety of applications that require precise signal sampling and holding, such as in high-performance analog systems, instrumentation, and in the feedback loop of operational amplifiers. Its wide bandwidth and high DC accuracy make it ideal for use in environments where signal integrity is crucial.
Q & A
- What is the operating temperature range of the LF198H/NOPB?
The operating temperature range is -55°C to 125°C. - What are the supply voltage ranges for the LF198H/NOPB?
The device operates from ±5-V to ±18-V supplies. - What is the typical acquisition time of the LF198H/NOPB?
The acquisition time is less than 10 µs. - Is the LF198H/NOPB compatible with different logic inputs?
Yes, it is compatible with TTL, PMOS, and CMOS logic inputs. - What is the typical hold step at a 0.01 µF capacitor?
The typical hold step is 0.5 mV. - What is the input offset voltage of the LF198H/NOPB?
The input offset voltage is 1 mV. - What is the supply current of the LF198H/NOPB?
The supply current is 4.5 mA. - Is the LF198H/NOPB space qualified?
Yes, it is space qualified under the JM38510 standard. - What type of package does the LF198H/NOPB come in?
The device comes in a TO-99-8 Metal Can package. - What is the mounting type of the LF198H/NOPB?
The mounting type is through-hole.
