LF398M - TI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

LF398M
Manufacturer

TI
ChipWorker Part#

CW23839335
Category

Amplifier, Buffer IC
Package

SOIC-14
Description

TEXAS INSTRUMENTS LF398M Sample and Hold Amplifier, 1 Amplifier, 1MHz, 20µs, 2mV, SOIC, 14Pins
Documentation

Datasheet

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LF398M Specifications

Attribute	Attribute Value

Part Number	LF398M
Manufacturer	TI
ChipWorker Part#	CW23839335
Category	Amplifier, Buffer IC
Documentation	Datasheet
Mounting Style	Surface Mount
Number of Pins	14 Pin
Case/Package	SOIC-14
Supply Current	4.5 mA
Number of Circuits	1 Circuit
Number of Positions	14 Position
Bandwidth	1 MHz
Input Offset Voltage	2 mV
Input Bias Current	10 nA
Operating Temperature (Max)	70 ℃
Operating Temperature (Min)	0 ℃
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Operating Temperature	0℃ ~ 70℃
Product Lifecycle Status	Active
Packaging	Each
RoHS	Non-Compliant
Lead-Free Status	Contains Lead
REACH SVHC Compliance	No SVHC
Mil-Spec	Yes
REACH SVHC Compliance Edition	2015/06/15
ECCN Code	EAR99

Product Description

The LF398M is a monolithic Sample and Hold Circuit utilizes BI-FET technology to obtain ultra-high 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 6µs 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 LF198 to be included inside the feedback loop of 1MHz op-amps without having stability problems. P-channel junction FET"s are combined with bipolar devices in the output amplifier to give droop rates as low as 5mV/min with a 1µF hold capacitor. The JFET"s have much lower noise than MOS devices used in previous designs and do not exhibit high temperature instabilities. The overall design guarantees no feed-through from input to output in the hold mode, even for input signals equal to the supply voltages.
<10µs Acquisition time
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
Military rated

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