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JL198BGA +BOM

Monolithic Sample and Hold Circuit

Hersteller:

Texas Instruments, Inc
Herstellerteil #:

JL198BGA
Datenblatt:

JL198BGA Datenblatt (PDF)
Series:

*
Rating:

Military
Operating Temperature Range (°C):

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

±5
EDA/CAD Modelle:

Fordern Sie kostenlose CAD-Modelle für an JL198BGA

JL198BGA Allgemeine Beschreibung

The LF198 is a monolithic sample-and-hold circuit which 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 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 LF198 to be included inside the feedback loop of 1 MHz op amps without having stability problems. Input impedance of 10¹⁰Ω allows high source impedances to be used without degrading accuracy.

P-channel junction FET's 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 JFET's have much lower noise than MOS devices used in previous designs and do not exhibit high temperature instabilities. The overall design ensures no feed-through from input to output in the hold mode, even for input signals equal to the supply voltages.

Hauptmerkmale

Operates from ±5V to ±18V Supplies
Less Than 10 μs Acquisition Time
TTL, PMOS, CMOS Compatible Logic Input
0.5 mV Typical Hold Step at C_h = 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
Logic Inputs on the LF198 are Fully Differential with Low Input Current, Allowing Direct Connection to TTL, PMOS, and CMOS. Differential Threshold is 1.4V. The LF198 will Operate from ±5V to ±18V Supplies.

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Spezifikationen

Category	Integrated Circuits (ICs)LinearAmplifiersInstrumentation, OP Amps, Buffer Amps	Series	*
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	Tray
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	Yes	feature-aec-qualified	No
feature-aec-qualified-number		feature-auto-motive	No
feature-p-pap	No	feature-eccn-code	EAR99
feature-svhc	Yes	feature-svhc-exceeds-threshold	Yes

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