ISL28005_10 Datasheet, PDF (8/14 Pages) Intersil Corporation – Micropower, Rail-to-Rail Input Current Sense Amplifier with Voltage Output

ISL28005
Typical Performance Curves V_cc = 12V, R_L = 1M, unless otherwise specified. (Continued)
0.2
45
GAIN 50
GAIN 50
35
0.0
25
-0.2
15
-0.4
+25°C
5
V_RS+= 100mV
-0.6
-40°C
-0.8
+125°C
-1.0
1µ
10µ
100µ
1m
10m
I_OUT(A)
FIGURE 7. NORMALIZED V_OA vs I_OUT
-5
V_CC = 12V
-15 _{VSENSE = 100mV}
-25 ^{AV = 100}
R_L = 1M
-3510
100
1k
V_RS+ = 12V
10k
100k
1M
FREQUENCY (Hz)
FIGURE 8. GAIN vs FREQUENCY V_RS+=100mV/12V,
V_SENSE = 100mV, V_OUT = 250mV_P-P
0.2
GAIN 20
0.0
-0.2
-40°C
-0.4
+25°C
-0.6
-0.8
-1.01µ
+125°C
10µ
100µ
1m
10m
I_OUT(A)
FIGURE 9. NORMALIZED V_OA vs I_OUT
Test Circuits and Waveforms
V_CC
+
V_RS+
-
+
V_SENSE
-
RS+
RS-
GND
OUT
1MΩ R_L ^VOUT
FIGURE 11. I_S, V_OS, V_OA, CMRR, PSRR, GAIN
ACCURACY
45
GAIN 20
35
25
15
V_RS+= 100mV
5
-5
V_CC = 12V
-15 _{VSENSE = 100mV}
-25 ^{AV = 100}
R_L = 1M
-3510
100
1k
V_RS+ = 12V
10k
100k
1M
FREQUENCY (Hz)
FIGURE 10. GAIN vs FREQUENCY V_RS+=100mV/12V,
V_SENSE = 100mV, V_OUT = 250mV_P-P
+
V_RS+
-
V_R1
V_CC
R1
+
V_SENSE
-
R2
V_R2
RS+
RS-
GND
OUT
1MΩ R_L ^VOUT
FIGURE 12. INPUT BIAS CURRENT, LEAKAGE
CURRENT
8
FN6973.3
September 16, 2010