LF398A National Semiconductor, LF398A Datasheet
LF398A
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LF398A Summary of contents
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... LF198/LF298/LF398, LF198A/LF398A Monolithic Sample-and-Hold Circuits General Description The LF198/LF298/LF398 are monolithic sample-and-hold circuits which utilize 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 ...
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... National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage Power Dissipation (Package Limitation) (Note 2) Operating Ambient Temperature Range LF198/LF198A LF298 LF398/LF398A Storage Temperature Range Input Voltage Equal to Supply Voltage Logic To Logic Reference Differential Voltage (Note 3) Output Short Circuit Duration Electrical Characteristics The following specifcations apply for − ...
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... D junction temperature for the LF198/LF198A is 150˚C; for the LF298, 115˚C; and for the LF398/LF398A, 100˚C. JMAX Note 3: Although the differential voltage may not exceed the limits given, the common-mode voltage on the logic pins may be equal to the supply voltages without causing damage to the circuit ...
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Typical Performance Characteristics Output Droop Rate DS005692-20 Leakage Current into Hold Capacitor DS005692-23 Power Supply Rejection DS005692-26 Note 10: See Definition www.national.com (Continued) Hold Step DS005692-21 Phase and Gain (Input to Output, Small Signal) DS005692-24 Output Short Circuit Current DS005692-27 ...
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Typical Performance Characteristics Input Bias Current DS005692-29 Output Transient at Start of Sample Mode DS005692-12 Logic Input Configurations DS005692-33 Threshold = 1.4V (Continued) Feedthrough Rejection Ratio (Hold Mode) DS005692-30 Output Transient at Start of Hold Mode TTL & CMOS 3V ...
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Logic Input Configurations + Threshold = 0 1.4V Threshold +4V Application Hints Hold Capacitor Hold step, acquisition time, and droop rate are the major trade-offs in the selection of a hold capacitor value. Size and cost may ...
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Application Hints (Continued) logic input for signal delay, calculate the slope of the wave- form at the threshold point to ensure that least 1.0 V/µs. Sampling Dynamic Signals Sample error to moving input signals probably causes more ...
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Typical Applications X1000 Sample & Hold * For lower gains, the LM108 must be frequency compensated Ramp Generator with Variable Reset Level www.national.com Sample and Difference Circuit (Output Follows Input in Hold = V V OUT DS005692-39 Integrator with Programmable ...
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Typical Applications (Continued) Output Holds at Average of Sampled Input DS005692-46 Reset Stabilized Amplifier (Gain of 1000) Increased Slew Current Fast Acquisition, Low Droop Sample & Hold DS005692-49 9 DS005692-47 DS005692-50 www.national.com ...
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Typical Applications (Continued) Synchronous Correlator for Recovering Signals Below Noise Level DC & AC Zeroing DS005692-59 www.national.com DS005692-52 Staircase Generator * Select for step height 50k 1V Step 10 2–Channel Switch DS005692- ± ± Gain 1 0.02% 1 ...
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... Small-Outline Package DS005692-15 Order Number LF298M or LF398M See NS Package Number M14A 11 DS005692-56 Metal Can Package DS005692-14 Order Number LF198H, LF198H/883, LF298H, LF398H, LF198AH or LF398AH See NS Package Number H08C www.national.com ...
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... Physical Dimensions inches (millimeters) unless otherwise noted Order Number LF198H, LF298H, LF398H, LF198AH or LF398AH Metal Can Package (H) NS Package Number H08C Molded Small-Outline Package (M) Order Number LF298M or LF398M NS Package Number M14A 13 www.national.com ...
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... National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications. Molded Dual-In-Line Package (N) Order Number LF398N or LF398AN NS Package Number N08E 2 ...