AN4472 datasheet(21/44 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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21 / 44 page

DocID026198 Rev 1

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AN4472

Hardware layout and configuration

Figure 14. Acquisition by Program 4, H-Bridge TX1, where C1, C2, C3 and C4 are

XDCR_1, XDCR_2, XDCR_3 and XDCR_4 respectively

3.4.7

Pattern Program 5

The sixth pattern stored in the SPI Flash is described in Table 18, where the output pulses

are in phase and SEL is 1 for the 5-level output option. The state sequence is given in

Table 18.

The test conditions applied to generate the waveforms in Figure 15 and Figure 16 are:

– HVP0 = + 80 V

– HVP1 = + 40 V

– HVM0 = - 80 V

– HVM1 = - 40 V

– Load: 300 pF // 100

Ω

Table 18. Program 5, SEL=1

mode

Frequency

[MHz]

Number of

pulses

Initial pulse

PRF

H-Bridge

XDCR_1

2.5

positive

300 µs

TX0

XDCR_2

2.5

negative

300 µs

TX1

XDCR_3

positive

300 µs

TX0

XDCR_4

negative

300 µs

TX1

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