Datasheet

MAX1270 EV Kit/EV System
6 _______________________________________________________________________________________
Evaluates: MAX1270/MAX1271/MAX127/MAX128
JU2
U4
MAX6141
1 2 3 4
4
5 6 7 8
U5
MAX1615
+5V
C14
0.1µF
C15
4.7µF
10V
J1–4
SHDN
IN
OUT
GND
C16 22µF 50V
JU3
C1
0.1µF
R5
OPEN
5
12
6
13
12 13
5 6
20 19 18 17 16
15
14 13 21 23
R2
OPEN
JU1
DEFAULT
TRACE 2–3
1
3
3 9
JU1 2
2
DGND (V
DD
)
V
DD
REF
1
R3
OPEN
R4
OPEN
OPAMPV-
OPAMPV+
VREF REFADJ
CHO CH1
CH2 CH3 CH4 CH5 CH6 CH7
N.C. N.C. N.C. N.C.
24 22 11
8
10
7 5 6 4
12
SHDN SSTRB (A2) DOUT (A1) DIN (SDA) SCLK (SCL) CS (A0) DGND
AGND
CH7 CH6 CH5 CH4 CH3 CH2 CH1 CH0
REFADJ
TP1
+5V
J1–38
J1–5 J1–6
J1–37 J1–36 J1–35 J1–34 J1–30
J1–3 J1–2 J1–1 J1–8 J1–7
+5V
+5V
R1
10Ω
VREF
C11
4.7µF
10V
C10
0.01µF
C3
C2 C4
C5
C6
C7
C8
C9
OPAMP+
VREF
2
1
L
R
3
8
5/3
OUT
GND
IN
3 2 1
5 4
GND
MAX1270 MAX1271
MAX127 MAX128
U1
1MΩ
D1 CMPSH-3C
R6 R8 R9 R10 R11 R12 R13 R7
2 3 9
10
9
10
2 3
U2C U2A U3C U3A
U3B U3D
U2B
U2D
14
7
14
7
U2 U3
4 4
11 11
OPAMPV+ OPAMPV-
8
1
8
1
+5V
C12
0.1µF
C13
0.1µF
Figure 1. MAX1270 EV Kit Schematic