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Vedi Specifiche Tecniche

JM38510/12501SGA +BOM

Sample and Hold Amplifier 1 Circuit Single-Ended TO-99-8

Produttore:

Texas Instruments
ProduttorePart #:

JM38510/12501SGA
Scheda dati:

JM38510/12501SGA Scheda dati (PDF)
Amplifier Type:

Sample and Hold
Number Of Circuits:

1
Output Type:

Single-Ended
Current - Input Bias:

25 nA
EDA/CAD Modelli:

Richiedi modelli CAD gratuiti per JM38510/12501SGA

JM38510/12501SGA Descrizione generale

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.

Caratteristiche principali

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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Specifiche

Series	-	Amplifier Type	Sample and Hold
Number of Circuits	1	Output Type	Single-Ended
Slew Rate	-	Current - Input Bias	25 nA
Voltage - Input Offset	3 mV	Current - Supply	-
Current - Output / Channel	25 mA	Voltage - Supply Span (Min)	10 V
Voltage - Supply Span (Max)	36 V	Operating Temperature	-55°C ~ 125°C (TA)
Mounting Type	Through Hole

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