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A3985 Scheda tecnica(PDF) 6 Page - Allegro MicroSystems |
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A3985 Scheda tecnica(HTML) 6 Page - Allegro MicroSystems |
6 / 15 page Digitally Programmable Dual Full-Bridge MOSFET Driver A3985 6 Allegro MicroSystems, Inc. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 www.allegromicro.com ELECTRICAL CHARACTERISTICS , continued, at TA = 25°C, VDD = 5 V, VBB = 12 to 50 V, unless noted otherwise Characteristics Symbol Test Conditions Min. Typ. Max. Units Serial Data Timing Serial Clock High Time tSCKH 50 –– ns Serial Clock Low Time tSCKL 50 –– ns Strobe Lead Time tSTLD 30 –– ns Strobe Lag Time tSTLG 30 –– ns Strobe High Time tSTRH 150 –– ns Data Out Enable Time tSDOE –– 40 ns Data Out Disable Time tSDOD –– 30 ns Data Out Valid Time from SCK Falling tSDOV –– 40 ns Data Out Hold Time from SCK Falling tSDOH 5 –– ns Data In Set-up Time to SCK Rising tSDIS 15 –– ns Data In Hold Time from SCK Rising tSDIH 10 –– ns WC Set-up Time to STR Rising tSWCS 15 –– ns WC Hold Time from STR Rising tSWCH 50 –– ns WC Hold Time from STR Falling tSLWCH 30 –– ns 1For input and output current specifications, negative current is defined as coming out of (sourcing) the specified device pin. 2Current Trip Point Error is the difference between actual current trip point and the target current trip point, referred to full scale (100%) current: EITrip = 100×(ITripActual – ITripTarget) / IFullScale % WC SDO SDI SCK STR tSWCH tSWCS tSDIH tSDIS tSDOH tSDOV tSDOD tSDOE tSTRH tSTLG tSTLD tSCKL tSCKH tSLWCH D17 D0 D17* D18* D0* D18 ** = Undefined, usually LSB from previous transfer Dx = Current data transfer block Dx* = Previous data transfer block ** Serial Data Timing Diagram |
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