ISL22414_15 Datasheet, PDF (17/20 Pages) Intersil Corporation – Low Noise, Low Power, SPI® Bus, 256 Taps

CS
SCK
SDI
SDO
ISL22424
16 CLKS
RD DCP2
16 CLKS
RD DCP1
16 CLKS
RD DCP0
16 CLKS
NOP
16 CLKS
NOP
16 CLKS
NOP
DCP2 OUT
DCP1 OUT
DCP0 OUT
FIGURE 21. DAISY CHAIN READ SEQUENCE OF N = 3 DCP
1.2V
DC/DC CONVERTER
OUTPUT
10k
0.005
PROCESSOR LOAD
10A, MAX
0.1µF
10k
+5V
8
EL8173IS
V_S+
3 IN+ EN 1
2 IN-
V_OUT ⁶
7 FB+
+5V
RH0
R₁
50k, 1%
5 FB- _VS-
4
RH1
RW0
50k
RL0
DCP0 (1/2 ISL22424U)
PROGRAMMABLE OFFSET ±25mV
R₂
1k, 1%
RW1
50k
RL1
DCP1 (1/2 ISL22424U)
PROGRAMMABLE GAIN 90 TO 110
R₃
50k, 1%
R₄
150k, 1%
R₅
309, 1%
R₆
1.37k, 1%
-5V
+5V
SPI bus
-5V
ISL22424UFV14Z
14 _Vcc
10
9
12
13
7
SCL
SDO
SDI
CS
NC
11 _GND
8 _V-
RH0
RL0
RW0
1
2
3
RH1
RL1
RW1
4
5
6
DCP0
DCP1
V_OUT = 0V to + 5V to ADC
FIGURE 22. CURRENT SENSING WITH GAIN AND OFFSET CONTROL
17
FN6425.1
September 9, 2015