
REV. 0
EVAL-AD1852EB
–9–
RESET GENERATOR
VCC
GND
1
MR
RESET
DVDD
C16
100nF
4
U8
ADM811TART
2 RST
3
DGND
RESET
S6
PLEASE NOTE: R38, R39
OPTIONAL RESISTORS.
TRIM TO REDUCE THD
WITH AD1855 UP TO 6dB
7
6
5
LOUT
AV
CC
C18
100nF
C17
100nF
AV
CC
R38
OPTION
C30
1.0nF NP0
C29
2.7nF PPS
R21
2.80k
C25
270pF NP0
C26
820pF NP0
AGND
R24
1.0k
U9B
OP275GP
C33
2.2nF PPS
J6
LEFT OUT
0
1
BESSEL LP FILTER RESPONSE
CORNER FREQUENCY: 100kHz
–
0.11dB @ 20kHz
–
0.45dB @ 40kHz
STEP RESPONSE:
<1% OVERSHOOT @ 7.75
LINEAR PHASE:
0 @ 20kHz
–
20 @ 20kHz
–
40 @ 40kHz
–
60 @ 60kHz
GROUP DELAY: 2.83 s
s
V
IN
V
OUT
GND
1
U6
LM317MDT
3
4
C12
100nF
10V TANT
15 F
C24
243
R33
715
R34
C13
16V A1
C36
5V REG
16V A1
47 F
C35
FB7
600Z
CR1
1SMB15AT3
DVDD
DGND
DCR3
J8
J9
IN
IN
ERR
SD
OUT
OUT
NR
GND
1
2
3
4
8
7
6
5
J11
10C14
16V A1
47 F
C37
CR4
J10
SMB1CR2
FB6
U7
–
5.0
C3
C15
16V A1
C38
5V REG
C39
392
R16
DS5
AVDD
AV
CC
47 F
J12
AV
CC
AGND
R18
499
R29
549
1.50k
R23
806
R22
3.01k
R31
53.6k
1
2
3
ROUT
ROUT
R39
OPTION
C32
1.0nF NP0
C31
2.7nF PPS
R25
2.80k
C27
270pF NP0
C28
820pF NP0
AGND
R28
1.0k
U9A
OP275GP
C34
2.2nF PPS
J7
RIGHT OUT
0
1
R20
499
R30
549
R19
1.50k
R27
806
R26
3.01k
R32
53.6k
AGND
–
12V
+12V
DGND
V9-12
LOUT
16V A1
16V A1
Figure 2. Anti-Image Filters, Power Supply Regulation, Reset Generator