TSC2012 datasheet(39/54 Pages) STMICROELECTRONICS

Numer części	TSC2012

Szczegółowy opis	High voltage, precision, bidirectional current sense amplifiers

PDF	54 Pages

Scroll/Zoom	100%

Producent	STMICROELECTRONICS [STMicroelectronics]

Strona internetowa	http://www.st.com

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39 / 54 page

Figure 72. Recommended layout

5.11

EMI rejection ration (EMIRR)

The electromagnetic interference (EMI) rejection ratio, or EMIRR, describes the EMI immunity of current sensing

device. An adverse effect that is common to many current sensing is a change in the offset voltage as a result of

RF signal rectification. A first order internal low pass filter is included on the input of the TSC2011 to minimize

susceptibility to EMIRR. Figure 73 shows the EMIRR on pin IN+, Figure 74 shows the EMIRR on pin IN- of the

TSC2011 measured from 400 MHz up to 2.4 GHz.

Figure 73. EMIRR on pin+

400

600

800 1000 1200 1400 1600 1800 2000 2200 2400

100

120

Vcc=5V, T=25°C

Prf=-10dBm

Frequency (MHz)

Figure 74. EMIRR on pin-

400

600

800 1000 1200 1400 1600 1800 2000 2200 2400

100

120

Vcc=5V, T=25°C

Prf=-10dBm

Frequency (MHz)

Figure 75 shows the EMIRR on pin IN+, Figure 76 shows the EMIRR on pin IN- of the TSC2010 measured from

10 MHz up to 2.4 GHz.

TSC2010, TSC2011, TSC2012

EMI rejection ration (EMIRR)

DS13057 - Rev 4

page 39/54

TSC2012 Arkusz danych(PDF) 39 Page - STMicroelectronics