CM8501/A
1.5A B
US
T
ERMINATOR
APPLICATION CIRCUITS
1.5A DDR BUS TERMINATOR DEMO BOARD CIRCUIT
VDD
VCC
C1
100uf/6.3V
NOTE:
JP3---->USEING INTERNAL REFERENCE
SOURCE(PIN 1, 2 SHORT)
JP3---->USEING EXTERNAL REFERENCE
SOURCE(PIN 2,3 SHORT)
R4
1k
2
1
J1
PWR/IN
TP1
BNC
1
D1
SK12
1
JP1
JUMPER
2
R1
100k
1
2
R2
1k
C3
470
1
5
4
3
2
C2
105
PGND
L1
3.3uH
D2
SK12
8
7
6
5
C8
10uf/6.3V
VDD
VL
FB
2
U2
CM-431
1
3
AGND
VCCQ
2
1
J2
VTT
1
2
J3
VREF-OUT
U1
C7
104
CM8501
C6
220uf/6.3V
VCC
SD
1
2
3
4
JP3
1
2
3
VCC
R6
5R1
1
C4
105
2
R5
0
1
JP2
JUMPER
2
VDD
C5
104
2
R3
100k
1
JP4
on/off sw
8-Pin Schematic
1.5A DDR BUS TERMINATOR DEMO BOARD CIRCUIT
VCC
VDD
2
1
J1
PWR/IN
C1 100uf/6.3V
2
JP1
JUMPER
1
R2
1k
R1
100k
1
1
R4
1k
2
C3
470
2
NOTE:
C8
10uf/6.3V
JP3---->USEING INTERNAL REFERENCE
SOURCE(PIN 1, 2 SHORT)
JP3---->USEING EXTERNAL REFERENCE
SOURCE(PIN 2,3 SHORT)
2
4
3
TP1
BNC
1
D1
SK12
C2 105
U2
CM-431
1
3
5
12
11
16
15
14
13
10
9
L1
3.3uH
2
PVDD
VFB
VCCQ
PGND
D2
SK12
NC
VL
NC
NC
JP3
J2
VTT
1
2
J3
VREF-OUT
U1
CM8501
1
VCC
R6
5R1
2
JP2
JUMPER
2
R5
0
1
1
2
C4 105
VDD
3
4
5
6
7
C5
104
C9
102
8
2
R3
100k
JP4
ON/OFF SW
16-Pin Schematic
2006/10/11
Rev. 1.3
Champion Microelectronic Corporation
AGSEN
AGND
VCCA
VIN/2
2
1
C7
104
C6
220uf/6.3V
NC
NC
NC
SD
1
2
3
1
2
Page 4
CHAMP [ CHAMPION MICROELECTRONIC CORP. ]
