HV+
• • •
V +
+5V
In 78L05 Out
0.1µF
1
0.1µF
0.1µF
ADS7833
2
8
7
6
+
V1 – 1P
V1 – 1N
Typical
Analog
Input
ISO130
G = 8V/V
V1 – 1
0.01µF
–
5
3
4
VSENSE
+
V
V
1 – 1CMV = 2.5V
1– 1DIFF ≤ ±500mV
–
• • •
RSENSE
V
SENSE ≤ ±62.5mV
• • •
HV–
FIGURE 5. Typical Isolated Differential Analog Input.
ADS7833
DSP56004
ISO130
SCKT
SCKR
CLK
CONV
Phase
A
V1 – 1
V2 – 1
V3 – 1
SCK/SCL
SDO0
MISO/HAO
ASH
ISO130
ISO130
SOI0
SOUT1
Phase
B
Phase
C
SOUT2
SOI1
V1 – 2
Position
Sensor
V1 – 3
MOSI/HA0
SOUT3
V2 – 2
Position
Sensor
V2 – 3
IREF
RTD
V3 – 2
REF
200
SERIN
SDO1
V3 – 3
V3 – 4
Aux
Input
DC Link
Voltage
ISO122
FIGURE 6. Motor Control Application Using Position Sensors.
®
ADS7833
12
BB [ BURR-BROWN CORPORATION ]
