csa - 1v p reliminary rev. 005 june 2013 sentron ag, a melexis company ? www.melexis.com ? sales_europe@melexis .com for north america: gmw associates ? tel: +1 (650) 802 - 8292 ? fax: +1 (650) 802 - 8298 ? sales@gmw.com page 1 of 6 csa - 1v imc - hall ? current sensor features: ? ? technology - very high sensitivity due to integrated magnetic concentrator ? ? ? ? ? ? ? applications: ? ? ? ? ? general description the csa - 1v is a single - axis integrated magnetic field sensor based on the hall effect. it produces a linear, ratio - metric output voltage proportional to the applied magnetic field parallel with the chip surface. the circuit is fabricated using a standard cmos process. the additional ferromagnetic layer (imc - hall ? ) that is added in a simple post - processing step, amplifies the magnetic field and concentrates it on the hall elements. therefore the circuit features very high magn etic sensitivity, low offset, and low noise. the csa - 1v is packaged in a standard soic - 8 full plastic package and suitable for up to 600v isolation voltage between the sensor and a conductor on pcb. please find the latest version of this datasheet and related information such as application notes on our website http://www.mel exis.com/hall - effect - sensor - ics package: soic - 8 pin out: note 1: used for factory programming b 1 a_out, analog sensor output 2 v dd pos. supply voltage 3 not connected 4 pv, programming voltage 1) 5 gnd, supply common 6 pd, programming data 1) 7 pc, programming clock 1) 8 co_out, common output
csa - 1v p reliminary rev. 005 june 2013 sentron ag, a melexis company ? www.melexis.com ? sales_europe@melexis .com for north america: gmw associates ? tel: +1 (650) 802 - 8292 ? fax: +1 (650) 802 - 8298 ? sales@gmw.com page 2 of 6 absolute maximum ratings symbol parameter min. typ. max. unit remarks v sup supply voltage 0 6 v t ambient temperature - 40 +125 o c recommended operating conditions symbol parameter min. typ. max. unit remarks v sup supply voltage 4.5 5 5.5 v i out output current - 1 1 ma c l load capacitance 1000 pf defined by desig n electrical characteristics at t= - 40c to 125c, v sup =4.5v to 5.5v if not otherwise specified. symbol parameter min. typ. max. unit test conditions i sup supply current 11 16 ma v common common (reference) output voltage 2) - 50 v sup /2 +50 i out =0ma b w bandwidth: dc to 100 khz t r response time 8 s note 2: ratiometric (proportional to v sup ) characteristics of the linear magnetic field sensor 3,4) with v sup = 5v and in the temperature range - 40 o c to 125 o c, if not otherwise specified. symbol par ameter min. typ. max. unit test conditions s magnetic sensitivity at 25 o c 3) 6) 275 280 285 v/t b = b l ? s/s ? t magn. sensitivity temperature drift < 0.02 %/c i out =0ma t= - 20c to 125c voff offset voltage at 25 o c - 20 0 20 mv b=0t, iout=0ma, t=20c ? voff/ ? t offset temperature drift < 0.2 mv/c b=0t, i out =0ma, t= - 20c to 125c b fs full scale magnetic field range 5) - 10 10 mt b l linear magnetic field range - 7.5 7.5 mt nl non linearity 0.2 % b = b l 0.5 b = b fs ? bnoise input re ferred magnetic noise spectrum density (rms) <125 nt/ ? hz f=10hz to 10khz note 3: ratiometric (proportional to v sup ) note 4: when the analog output pin a_out is used in differential mode (i.e. vout = a_out - co_out) note 5: device saturates for b>b fs , but is not damaged note 6: the absolute accuracy on magnetic sensitivity trimming is +/ - 2% sentron ag reserves the right to make changes without further notice to any products herein to improve reliability, function, or design. sentron does not assume any liability arising from the use of any product or application of any product or circuit described herein.
csa - 1v p reliminary rev. 005 june 2013 sentron ag, a melexis company ? www.melexis.com ? sales_europe@melexis .com for north america: gmw associates ? tel: +1 (650) 802 - 8292 ? fax: +1 (650) 802 - 8298 ? sales@gmw.com page 3 of 6 block diagram fig. 1 block diagram of csa - 1v important for reliable operation within the specifications the sensor must be connected as follows: c onnect pin 6 (pd) to pin 5 (gnd) connect pin 7 (pc) to pin 2 (vdd) connect pin 4 (pv) to pin 2 (vdd) put a 100nf capacitor close to the chip between pin 2 (vdd) and pin 5 (gnd) * if the supply voltage is disturbed by emi it can be useful to place a second capacitor (100pf, ceramic) parallel to the 100nf capacitor. fig. 2 connection diagram of csa - 1v 1 a_out 2 vdd 3 n.c. 4 pv co_out 8 pc 7 pd 6 gnd 5 gnd v sup gnd 100nf * csa - 1v
csa - 1v p reliminary rev. 005 june 2013 sentron ag, a melexis company ? www.melexis.com ? sales_europe@melexis .com for north america: gmw associates ? tel: +1 (650) 802 - 8292 ? fax: +1 (650) 802 - 8298 ? sales@gmw.com page 4 of 6 package information soic - 8 fig. 3 package information and magnetic sensitive direction package versions leaded (standard): csa - 1v material: c151, 85/15 lead free green: csa - 1v - g material: cda151, pb <100ppm b: magnetic sensitive direction b 0.018 (0.45)
csa - 1v p reliminary rev. 005 june 2013 sentron ag, a melexis company ? www.melexis.com ? sales_europe@melexis .com for north america: gmw associates ? tel: +1 (650) 802 - 8292 ? fax: +1 (650) 802 - 8298 ? sales@gmw.com page 5 of 6 typical applications busbar current measurement the current conductor is situated above the chip. all examples for s=280v/t max current [a] distance sens or to wire [mm] sensitivity [mv/a] approx. resolution (raw) [a] approx. resolution (t int =1ms) [a] typ. linearity error [%] 10 0.2 120 0.1 0.01 <0.2 50 2 25 0.5 0.05 100 4 12 1 0.1 500 20 3 3.5 0.35 1000 40 1.5 7 0.7 pcb current measurement the current conductor is situated below the chip (on pcb). typically obtained values for for this type of application are (width of pcb current track 2.5mm): max current(*) [a] dc / pulsed no of tracks under sensor sensitivity [mv/a] resolution (raw) [ma] resolution t int =1ms [ma] typ. linearity error [%] 2 / 10 4 140 70 7 <0.2 10 / 50 1 35 280 28 (*) max current depends on pcb properties/thermal budget please contact us for documentation such as application notes, technical papers and other s. a current conductor is placed at a certain distance above or beyond the chip. the magnetic field around a long current wire is described by h=i/2r. the flux density at b= 0 *i/2 r.
csa - 1v p reliminary rev. 005 june 2013 sentron ag, a melexis company ? www.melexis.com ? sales_europe@melexis .com for north america: gmw associates ? tel: +1 (650) 802 - 8292 ? fax: +1 (650) 802 - 8298 ? sales@gmw.com page 6 of 6 this document is published by: sentron ag, a melexis company for technical and commercial support: for north america: www.gmw.com , sales@gmw.com for the rest of t he world: www.melexis.com , sales_europe@melexis.com application notes are available on the website. important notice / disclaimer devices sold by sentron are cov ered by the warranty and patent indemnification provisions appearing in its term of sale. sentron makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. sentron reserves the right to change specifications and prices at any time and without notice. therefore, prior to designing this product into a system, it is necessary to check with sentron for current information. this product is intended for use in normal commercial applications. applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life - support or life - sustaining equipment are specific ally not recommended without additional processing by sentron for each application. the information furnished by sentron is believed to be correct and accurate. however, sentron shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interrupt of business or indirect, special incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. no obligation or liability to recipient or any third party shall arise or flow out of sentrons rendering of technical or other services. ? 2005 sentron ag. all rights reserved.
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