Features
The LF198H is a versatile Sample and Hold (S&H) analog front-end IC. Its key features include:
Wide supply range: Operates from ±5V to ±18V.
Fast acquisition time: Less than 10 µs.
TTL-compatible logic inputs: Suitable for various input types.
Low hold step and offset: Ensuring accurate data retention.
High accuracy and low noise: Providing reliable performance in hold mode.
Space-qualified design: Meets strict industry standards for space applications.
These features make the LF198H suitable for demanding analog signal processing tasks in various industries.
Package
The LF198H has a package type TO-99-8, which is a dual in-line package (DIP).
Pinout
The LF198H is a single-channel Sample-and-Hold amplifier with an 8-pin TO-5 package (pin count: 8).
Here's a brief summary of the pin functions:
VSS (Ground): Provides a reference for the device.
IN (Input): Connects to the signal being sampled and held.
CH (Channel Select): Enables the Sample-and-Hold function, selecting between hold or sample mode.
HLD (Hold Enable): Activates the Hold Mode when high.
VDD (Power Supply): Provides operating voltage for the device.
/OE (Output Enable): Controls the output signal; low = output enabled.
VIL (Input Low Threshold Voltage): Specifies the minimum input voltage before a transition is considered valid.
VIH (Input High Threshold Voltage): Specifies the maximum input voltage before a transition is considered valid.
Please note that the LF198H may also have additional pins for specific functions or package variations, but the primary 8-pin configuration remains the same.
Manufacturer
The LF198H is manufactured by NXP Semiconductors, a Dutch multinational semiconductor company. NXP specializes in developing and providing integrated circuits, software, and security solutions for various industries.
Applications
The LF198H, a Sample and Hold IC by NXP Semiconductors, finds applications in various fields such as data acquisition systems, instrumentation, digital signal processing, and space-qualified electronics. Its wide bandwidth and high precision make it suitable for demanding circuits.
Equivalent
LF198H is a sample and hold IC, similar to NXP's LF295/LF296 alternatives. These all offer similar functionality in compact packages.
Specifications
| Rating |
Military |
Operating temperature range (°C) |
-55 to 125 |
| feature-resolution |
|
feature-maximum-single-supply-voltage-v |
|
| feature-minimum-dual-supply-voltage-v |
±5 |
feature-maximum-dual-supply-voltage-v |
±18 |
| feature-power-supply-type |
Dual |
feature-packaging |
|
| feature-minimum-single-supply-voltage-v |
|
feature-rad-hard |
|
| feature-pin-count |
8 |
feature-cecc-qualified |
No |
| feature-esd-protection |
|
feature-escc-qualified |
|
| feature-military |
No |
feature-aec-qualified |
No |
| feature-aec-qualified-number |
|
feature-auto-motive |
No |
| feature-p-pap |
No |
feature-eccn-code |
EAR99 |
| feature-svhc |
|
feature-svhc-exceeds-threshold |
No |
| Package/Case |
CAN8
|
LF198H FAQs
1.Q: Is this NXP sample-and-hold amplifier still in production?
A: No, the part status is listed as "Obsolete," meaning it’s no longer manufactured but may be available through distributors.
2.Q: Does this NXP part meet automotive or PPAP standards?
A: No, it’s marked "Automotive: No" and "PPAP: No" in the parameters, indicating it’s not qualified for automotive use.
3.Q: What is the package type and dimensions of this NXP S/H amplifier?
A: It comes in a TO-99-8 metal can (TO-5 variant) with 9.4mm max diameter, 4.7mm max height, and 8 through-hole pins.
4.Q: What is the recommended dual supply voltage for this NXP component?
A: The typical dual supply voltage is ±15V, with a minimum of ±5V and maximum of ±18V.
5.Q: What are the absolute maximum ratings for this NXP S/H amplifier?
A: Max dual supply voltage is ±18V. Operating temperature range is -55°C to +125°C. Exceeding these may damage the device.
6.Q: What are typical applications for this NXP sample-and-hold circuit?
A: It’s suited for precision analog systems like data acquisition, ADCs, DACs, radar systems, and instrumentation requiring fast signal capture and hold.
7.Q: What are the key features of this NXP sample-and-hold amplifier?
A: Key features include: 1-channel S/H, 16µs (typ) acquisition time, dual supply voltage range (±5V to ±18V), wide operating temperature (-55°C to +125°C), and through-hole mounting.
8.Q: What is the pinout configuration of the NXP Semiconductors monolithic sample-and-hold circuit in TO-99-8 package?
A: The device has 8 pins in a TO-99 metal can package (TO-5 variant). Exact pin functions (e.g., input, output, power rails) should be verified in the datasheet, as the description lacks pinout details.
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