This website uses cookies. By using this site, you consent to the use of cookies. For more information, please take a look at our Privacy Policy.

Images are for reference only,

See Technical Specifications

LF198H +BOM

Monolithic Sample and Hold Circuit

Manufacturer:

Analog Devices, Inc
Mfr.Part #:

LF198H
Datasheet:

LF198H Datasheet (PDF)
Rating:

Military
Operating Temperature Range (°C):

-55 to 125
Feature-minimum-dual-supply-voltage-v:

±5
Feature-maximum-dual-supply-voltage-v:

±18
EDA/CAD Models:

Request Free CAD Models for LF198H

Email: [email protected]

Skype: live:.cid.ab6b29428937b76

Tel: +852 95804164

LF198H General Description

The LFx98x devices are monolithic sample-and-hold circuits that use BI-FET technology to obtain ultrahigh DC accuracy with fast acquisition of signal and low droop rate. Operating as a unity-gain follower, DC gain accuracy is 0.002% typical and acquisition time is as low as 6 µs to 0.01%. A bipolar input stage is used to achieve low offset voltage and wide bandwidth. Input offset adjust is accomplished with a single pin and does not degrade input offset drift. The wide bandwidth allows the LFx98x to be included inside the feedback loop of 1-MHz operational amplifiers without having stability problems. Input impedance of 10¹⁰ Ω allows high-source impedances to be used without degrading accuracy.

P-channel junction FETs are combined with bipolar devices in the output amplifier to give droop rates as low as 5 mV/min with a 1-µF hold capacitor. The JFETs have much lower noise than MOS devices used in previous designs and do not exhibit high temperature instabilities. The overall design ensures no feedthrough from input to output in the hold mode, even for input signals equal to the supply voltages.

Logic inputs on the LFx98x are fully differential with low input current, allowing for direct connection to TTL, PMOS, and CMOS. Differential threshold is
1.4 V. The LFx98x will operate from ±5-V to ±18-V supplies.

An A version is available with tightened electrical specifications.

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
0.002% Gain Accuracy
Low Output Noise in Hold Mode
Input Characteristics Do Not Change During Hold Mode
High Supply Rejection Ratio in Sample or Hold
Wide Bandwidth
Space Qualified, JM38510

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

Service Policies and Others

After-Sales & Settlement Related

Payment

Payment Method

TT/Wire Transfer

Paypal

Western Union

Money Gram

For alternative payment channels, please reach out to us at:

[email protected]

Shipping & Packing

Shipping Method

Fedex

UPS

DHL

NTN

Packing

AVAQ determines and packages all devices based on electrostatic discharge (ESD) and moisture sensitivity level (MSL) protection requirements.

Warranty

365-Day Product

Quality Guarantee

We promise to provide 365 days quality assurance service for all our products.

Ratings and Reviews

C**b 09/11/2022

Power supplies working. Delivery 10 days. Indication.Quality soldering on the four.Voltage 4.99 at allThe quality of the board is also not superRolled off a quarter of bucks.Smarty. sale! 765408 (exclamation mark, change to/)Cm photoWe register on the link, there are no such buns in the direct)In general, i recommend everyone to buy

C**e 01/10/2022

superb small and very quickly delivered good price

L**m 03/21/2021

received 4xDS3231SN modules. perfect !