Datasheet

Data Sheet AD9245
Rev. E | Page 23 of 32
03583-050
1
2 3
4
5
6
P13
P14
XFRIN1
OPTIONAL XFR
T2 FT C1–
1
–13
NC
CT
1
T 1
ADT1
–1WT
6
2
3
4
5
1
2
3
4
5
R SINGLE ENDED
R18
25Ω
R3, R16, C18
ONLY ONE SHOULD BE ON BOARD AT A TIME
EXTREF
1V MAX E1
R1 10kΩ
R9 10k
Ω
0.1
µF
C12
C9 0.10µ
F
GND
GND
GND
GND
GND
AVDD
C29 10
µF
0.1µ
F
C11
C7
0.1µ
F
GND
GND
AVDD
P7
A
B
C
D
P9
P8
P11
P10
E
C13 0.10µ
F
C22
10µF
P6
P1
P3
P4
1
2
3
4
GND
GND
C8
0.1µ
F
P5
2
MODE
25
26
27 28
29
30 31
32
24
23
22
21
20
19
18
17
1
2
3
4
5
6
7
8
REFB
REFT
AVDD
AGND
VIN+ AGN
D
AV
DD
VIN
–
AD9245
U4
VREF
SENSE
MODE
D13
OT
R
D12
D11
D10
DV
D
D
DGND
D9
D7
D8
D6
D5
D4
16
15
14
13 12
11 10
9
DNC
CLK
DNC
D0
PDWN
D1
D2
D3
(LSB)
DR
VDD
GND
1
2
3 4
5
6 7
8
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
16
15
14
13
12 11
10
9
DRX
D13X
D12X
D10X
D11X
D9X
D8X
D7X
D6X
D5X
D4X
D2X
D3X
D1X
D0X
(MSB)
OVERRANGE BIT
AVD
D
GND
DR
VDD
VDL
VAMP
GND
P2
GND
H1
MTHOLE6
H2 MTHOLE6
H3
MTHOLE6
H4
MTHOLE6
3.0V
2.5V
2.5V
5.0V
RP2 220
Ω
RP1 220
Ω
SENSE PIN SOLDERABLE JUMPER:
E TO A:
EXTERNAL VOLTAGE DIVIDER
E TO B:
INTERNAL 1V REFERENCE (DEFAULT)
E TO C:
EXTERNAL REFERENCE
E TO D:
INTERNAL 0.5V REFERENCE
MODE PIN SOLDERABLE JUMPER:
5 TO 1:
TWOS COMPLEMENT/DCS OFF
5 TO 2: TWOS COMPLEMENT/DCS ON
5 TO 3:
OFFSET BINARY/DCS ON
5 TO 4:
OFFSET BINARY/DCS OFF
GND
R8 1k
Ω
CLK
AVDD
GND
R25
1k
Ω
R13 1kΩ
A
VDD
R15
33
Ω
GND
GND
C23 10pF
GND
C19 OR L1 FOR FIL
TER
GND
A
VDD
R4
33
Ω
R36
1k
Ω
R26 1k
Ω
GND
AVD
D
A
VDD
GND
GND
VIN+
VIN–
20pF
C21
10pF
R2
DNP
R10 36
Ω
R12 0
Ω
AMPIN
X
OUT
GND
X
OUT
B
R3 0
Ω
R11
36
Ω
C5 0.1
µ
F
C26
10pF
E 45
C16
0.1
µ
F
R42
0Ω
C6
FOR SINGLE ENDED INPUT PLACE R18, R19, R42, C6, AND C18. REMOVE R3, R12, C15, C17, AND C27
R12, R42, C17
ONLY ONE SHOULD BE ON BOARD AT A TIME
0.1µ
F
GND
GND
AMP
AMPINB
C15
0.1
µF
L1
10nH
GND
PRI
SEC
PRI SEC
GND
C18
0.10
µ
F
X FRIN
X
OUT
B
CT
X
OUT
J1
R5
1kΩ
R7
1kΩ
R6
1kΩ
Figure 49. LFCSP Evaluation Board Schematic—Analog Inputs and DUT