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AN4472 Fiches technique(PDF) 13 Page - STMicroelectronics

No de pièce AN4472
Description  STEVAL-IME008V1 evaluation board based on the STHV749 transmission pulser
PDF  44 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN4472 Fiches technique(HTML) 13 Page - STMicroelectronics

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DocID026198 Rev 1
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AN4472
Hardware layout and configuration
44
Figure 7. Acquisition by Program 0 with SEL=0, where C1, C2, C3 and C4 are XDCR_1,
XDCR_2, XDCR_3 and XDCR_4 respectively
3.4.3
Pattern Program 1 (SEL = 1, 5-level output option)
The second pattern stored in the SPI Flash is described in Table 10, where the output
pulses are delayed by 10 ns each. The state sequence is given in Table 11.
The test conditions applied to generate the waveforms in Figure 8 and Figure 9 are:
– HVP0 = + 80 V
– HVP1 = + 40 V
– HVM0 = - 80 V
– HVM1 = - 40 V
– Load: 300 pF // 100
Ω
Table 10. Program “1”
mode
Frequency
[MHz]
Number of
pulses
Initial pulse
PRF
H-Bridge
XDCR_1
PW
5
10
positive
150 µs
TX0, TX1
XDCR_2
PW
5
10
positive
150 µs
TX0, TX1
XDCR_3
PW
5
10
positive
150 µs
TX1, TX1
XDCR_4
PW
5
10
positive
150 µs
TX1, TX1



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