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SI8518-B-GM Datasheet(PDF) 1 Page - Silicon Laboratories |
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SI8518-B-GM Datasheet(HTML) 1 Page - Silicon Laboratories |
1 / 24 page Preliminary Rev. 0.1 7/07 Copyright © 2007 by Silicon Laboratories Si85xx This information applies to a product under development. Its characteristics and specifications are subject to change without notice. Silicon Laboratories Confidential. Information contained herein is covered under non-disclosure agreement (NDA). Si85xx Si85 XX UNIDIRECTIONAL AC CURRENT SENSORS Features Applications Description The Si85xx products are unidirectional ac current sensors available in full- scale ranges of 5, 10, and 20 A. Si85xx products are ideal upgrades for older current-sensing technologies offering size, performance and cost advantages over current transformers, Hall effect devices, DCR circuits and other approaches. The Si85xx are extremely low loss, adding less than 1.3 m Ω of series resistance and less than 2 nH series inductance in the sensing path at 25 ºC. Current-sensing terminals are isolated from the other package pins to a maximum voltage of 1,000 VDC. Functional Block Diagram Single-chip ac current sensor/conditioner Low loss: Less than 1.3 m Ω primary series resistance; less than 2 nH primary inductance at 25 ºC Leading-edge noise suppression eliminates need for leading-edge blanking "Ping-Pong" output version allows one Si85xx to replace two current transformers in full-bridge applications 5, 10, and 20 A full-scale versions FAULT output helps safeguard operation 1,000 VDC isolation Accurate to ±5% of measurement Large 2 VPP output pins signal at full scale High-side or low-side current sensing –40 to 125 ºC operating range (Si85x4/5/6) Small 4x4x1mm package Low cost Power supplies Motor controls Lighting equipment Industrial equipment Typical Application VDD VOUT IIN IOUT L C Q1 Q2 PH1 PH2 R1 OUT VDD1 GND2 VIN Si850x TRST R2 Si851x VDD TRST/FAULT IOUT IIN GND INTEGRATOR SIGNAL CONDITIONING ADC AUTO CALIBRATION LOGIC TEMP SENSOR OUT1 OUT2 MODE LOGIC MODE R1 R2 R3 R4 RESET LOGIC GND1 Patents pending Pin Assignments: See page 20 12-Pin QFN Si850x R1 R2 GND2 GND3 OUT NC IIN IOUT Si851x R1 R2 R3 R4 OUT1 OUT2 IIN IOUT |
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