Texas Instruments ADS794x EVM Series User Manual page 24

6
+5VA
U2
2 6
VIN VOUT
R46
3 TEMP TRIM 5
C14
REF5040 C4
4
GND 1
1u
REF5040IDGKT 1u
D
C29
10u
EXT_REF
T4
T8
UniPolar VCM_Ouput
J10
A0(+)
1
R19
NI
J11
A0(-)
1
C R10
NI
A0(-)
P2
A0(+)
1 2
3 4
A0(-)
5 6
7 8
9 A1(+) 10
11 12
A1(-)
13 14
15 16
17 18
19 20
REF+
EXT_REF_IN
B
J4
A1(+) A0(+)
1
R44
NI
A1(+)
J5
A1(-)
1
A
R43
NI
A1(-)
6
5
C13
0.1u
3
2
REF IN/EXT R11 1k
J2
R12
C6
R30
R14
10u
1.5k
J6
3k
Unipolar
UN_POL_VCM
R15
C5
10u
1k
+5VA
C17 0.1u
R31 47
UN_POL_VCM
6
3 U5
5
R32 1 R20
C16 1
4
2
1000p
OPA836IDBVT
C15 2.2p
R17 10k R16
10k
*
+5VA C23 0.1u
*
*
6 U7
47
R34 3
5
R35 1
* R26
UN_POL_VCM 1
C22
4
2
OPA836IDBVT
1000p
R25
C21 2.2p
*
*
R23
10k R22 10k
*
+5VA
C20 0.1u
*
R37 47
*
U6
6
UN_POL_VCM
3
5
1
R38 R27
1
*
4
2
C25
OPA836IDBVT
1000p
R29
C18 2.2p
* *
10k 10k
R39 R18
C24 0.1u
+5VA
47
R42
6
UN_POL_VCM
3
U8
C26 5
R40 1
1
1000p 4
2
OPA836IDBVT
C19 2.2p
R45 10k R24 10k
5
4 3
+5VA
U3
7 OPA350EA/250
6
4
0
+5VA
1u
C2
C8 2.2u
C1 0.1u
4 3 2 1
U1
4.99
REFN REFP AVDD GND
16
DVDD
5
C27 AIN0P
15
SDO
1000p
6
AIN0N
14
SCLK
13
CS
7
AIN1N
12
PDEN
C28
8
AIN1P
11
1000p CH_SEL
THERMAL_PAD NC NC
17 9 10
ADS7945/6
4.99
NI
+5VA
+5VA
4.99 T1
C12
C11
22u 1000p
NI
T7
AGND
T6
AGND
T5
AGND
4.99
R21
4 3
2
CH_SEL
T3
+VD
6 7 8
U9
47 5 1
R3
Q CLK
CH_SEL
3 2 R28 47
Q D
GND
4 SN74LVC2G74DCTR
+VD
/CS
R6 10k
C10
1u
J1
/CS or FSX
/CS FSX
P1
R1 47
1
SCLK
3
5
SCLK
SCLK R2
47
7
9
MOSI
11
13
SDO MISO 15
47
R4
17
19
GPIO5
R5 10k
+5VA
P3
1 2
3 4
5 6
7 8
9 10
+3.3VD +5VD
VD 5.0/3.3
R9 0
+3.3VD
5411 EAST WILLIAMS BOULEVARD, TUCSON, AZ 85711 USA
DESIGNED BY:
TITLE:
Rafael Ordonez
DRAWN BY:
Rafael Ordonez
SIZE:
C
DOCUMENT CONTROL NO.
6527650
SHEET 1 OF 1
FILE: ADS7945-6EVM_A.sch
2
1
REVISION RECORD
LTR ECO NO: APPROVED: DATE:
2
4
6
8
10
12
14
16
18
20
+3.3VD
NI
R7
U4
1 8
A0 VCC
2 5
A1 SDA
R8 3 6
A2 SCL
7 4
WP
GND
24LC256-I/ST
47
+5VD
+VD
+VD
T2
J3
C9 C3
1000p 22u
Texas Instruments, Inc.
PRECISION ANALOG PRODUCTS
HIGH-PERFORMANCE ANALOG DIVISION
SEMICONDUCTOR GROUP
ADS7945-6EVM
DATED: REV:
May-17-2011
A
1
D
C
B
A