AN4472 datasheet(23/44 Pages) STMICROELECTRONICS

Part #	AN4472

Description	STEVAL-IME008V1 evaluation board based on the STHV749 transmission pulser

PDF	44 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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23 / 44 page

DocID026198 Rev 1

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AN4472

Hardware layout and configuration

Figure 16. Acquisition by Program 5, zoom of Figure 15, where C1, C2, C3 and C4 are

XDCR_1, XDCR_2, XDCR_3 and XDCR_4 respectively

3.4.8

Pattern Program 6

The seventh pattern stored in the SPI Flash is described in Table 20, with the output pulses

in phase and SEL is 0 for the 3-level output option. The state sequence is given in Table 21.

The test conditions applied to generate the waveforms in Figure 17 are:

– HVP0 = HVP1 = + 80 V

– HVP_CW = + 40 V

– HVM0 = HVM1 = - 80 V

– HVM_CW = - 40 V

– Load: 300 pF // 100

Ω

Table 20. Program 6, SEL=0

mode

Frequency

[MHz]

Number of pulses

Initial pulse

PRF

H-Bridge

XDCR_1

PW -CW

2.5

10 (PW) + 10 (CW)

positive

300 µs

TX0 & TX1, CW (0.5 A)

XDCR_2

PW -CW

2.5

10 (PW) + 10 (CW)

negative

300 µs

TX0 & TX1, CW (0.5 A)

XDCR_3

PW -CW

10 (PW) + 10 (CW)

positive

300 µs

TX0 & TX1, CW (0.5 A)

XDCR_4

PW -CW

10 (PW) + 10 (CW)

negative

300 µs

TX0 & TX1, CW (0.5 A)

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