SI8540 Datasheet, PDF (5/18 Pages) List of Unclassifed Manufacturers – HIGH-SIDE CURRENT SENSE AMPLIFIER

Si8540
Table 2. DC and AC Characteristics
(Unless otherwise specified: V_RG1 =+5 to +36 V, RG1 =RG2 =200, V_SENSE =0 V, T_A = –40 to +85 °C)
Parameter
Symbol
Test Condition
Min
Operating Voltage
V_RG1
5
Operating Frequency
F
0
Total Input Current
I_RG1+I_RG2
I_LOAD = 0 A
—
Input Currents
I_RG1, I_RG2
I_LOAD = 0 A
—
Input Current Matching
Sense Voltage¹
I_OS
V_SENSE
I_RG1 – I_RG2
—
—
OUT Current Accuracy
I_RG/I_OUT
V_SENSE = 100 mV
—
No-Load OUT Error
V_RG1 =10 V, V_SENSE =0 V
—
Low-Level OUT Error
V_RG1 =10 V, V_SENSE =3 mV
—
Power-Supply Rejection
PSR
V_SENSE = 100 mV
—
Shutdown Supply Current
I_RG1+I_RG2
V_SHDN = 2.4 V
—
SHDN Input Low Voltage
V_IL
—
SHDN Input Low Current
I_IL
V_SHDN = 0 V
—
SHDN Input High Voltage
V_IH
2.4
SHDN Input High Current
I_IH
V_SHDN = 2.4 V
—
OUT Output Voltage Range
V_OUT
V_OUT clamped at 8 V
0
OUT Output Resistance
(Internal)
I_OUT = 1.5 mA
1
OUT Rise, Fall Time
V_SENSE = 5 mV to 150 mV,
—
R_OUT = 2 = k,
—
C_OUT = 50 pF, 10% to 90%
(Note 2)
OUT Settling Time to 1% of
Final Value
Maximum Output Current
I_OUT
V_SENSE = 5 to 150 mV,
—
R_OUT = 2 k,
—
C_OUT = 50 pF (Note 2)
For I_OUT > 1.5 mA the internal 1.5
current limitation starts to limit the
output current
Notes:
1. V_SENSE is the voltage across the sense resistor.
2. C_OUT is the load capacitance seen by the OUT pin.
Typ
Max Unit
—
36
V
20
—
kHz
46
90
µA
23
45
µA
±0.4
±1.5
µA
100
—
mV
±0.2
±1.5
%
0.5
15
µA
±0.5
+10
µA
-85
—
dB
3.5
9
µA
—
0.3
V
—
1.0
µA
—
—
V
—
1.0
µA
— V_RG1 – 3.5 V
(<8)
3
—
M
0.4
—
µs
0.5
—
µs
1
—
µs
2
—
µs
—
10
mA
Rev. 1.2
5