LMP8602_10 Datasheet, PDF (3/24 Pages) National Semiconductor (TI) – 60V Common Mode, Fixed Gain, Bidirectional Precision Current Sensing Amplifier

Symbol
Parameter
Output Buffer (From A2 (pin 4) to OUT ( pin 5 )
V_OS
Input Offset Voltage
K2
Gain (Note 15)
I_B
Input Bias Current of A2 (Note 11)
A2 V_OUT
A2 Output Voltage Swing
(Note 12, Note 13)
I_SC
Output Short-Circuit Current (Note 14)
Conditions
0V ≤ V_CM ≤ V_S
LMP8602
LMP8603
V_OL,
LMP8602
R_L = 100 kΩ
LMP8603
V_OH,
R_L = 100 kΩ
Sourcing, V_IN = V_S, V_OUT = GND
Sinking, V_IN = GND, V_OUT = V_S
Min
Typ
Max
(Note 7) (Note 5) (Note 7)
Units
−2
±0.5
2
mV
−2.5
2.5
4.975
5
5.025
V/V
9.95
10
10.05
−40
fA
±20
nA
10
40
mV
10
80
3.28
3.29
V
-25
-38
-60
mA
30
46
65
5V Electrical Characteristics (Note 2)
Unless otherwise specified, all limits guaranteed for at T_A = 25°C, V_S = 5V, GND = 0V, −22V ≤ V_CM ≤ 60V, and R_L = ∞, Offset (Pin
7) is grounded, 10nF between V_S and GND. Boldface limits apply at the temperature extremes.
Symbol
Parameter
Conditions
Min
Typ
Max
(Note 7) (Note 5) (Note 7)
Units
Overall Performance (From -IN (pin 1) and +IN (pin 8) to OUT (pin 5) with pins A1 (pin 3) and A2 (pin 4) connected)
I_S
Supply Current
A_V
Total Gain (Note 15)
LMP8602
LMP8603
1.1
1.5
mA
49.75
50
50.25
V/V
99.5
100 100.5
Gain Drift
SR
Slew Rate (Note 8)
BW
Bandwidth
−40°C ≤ T_A ≤ 125°C
V_IN = ±0.25V
−2.8
±20 ppm/°C
0.6
0.83
50
60
V/μs
kHz
V_OS
TCV_OS
e_N
Input Offset Voltage
Input Offset Voltage Drift (Note 9)
Input Referred Voltage Noise
−40°C ≤ T_A ≤ 125°C
0.1 Hz − 10 Hz, 6 Sigma
Spectral Density, 1 kHz
0.15
2
17.5
890
±1
mV
±10 μV/°C
μV_P-P
nV/√Hz
PSRR
Power Supply Rejection Ratio
DC 4.5V ≤ V_S ≤ 5.5V
LMP8602
70
90
dB
±0.25
±1
%
Mid−scale Offset Scaling Accuracy
LMP8603
Input Referred
±0.50 mV
±0.45 ±1.5
%
Input Referred
±0.375 mV
Preamplifier (From input pins -IN (pin 1) and +IN (pin 8) to A1 (pin 3))
R_CM
Input Impedance Common Mode
R_DM
Input Impedance Differential Mode
V_OS
Input Offset Voltage
DC CMRR DC Common Mode Rejection Ratio
AC Common Mode Rejection Ratio
AC CMRR _{(Note 10)}
0V ≤ V_CM ≤ 60V
−20V ≤ V_CM< 0V
0V ≤ V_CM ≤ 60V
−20V ≤ V_CM < 0V
V_CM = V_S / 2
−20V ≤ V_CM ≤ 60V
f = 1 kHz
f = 10 kHz
250
295
350
kΩ
165
193
250
kΩ
500
590
700
kΩ
300
386
500
kΩ
±0.15
±1
mV
90
105
dB
80
96
dB
83
CMVR Input Common Mode Voltage Range
for 80 dB CMRR
−22
60
V
K1
Gain (Note 15)
9.95
10
10.05 V/V
R_F-INT
Output Impedance Filter Resistor
99
100
101
kΩ
3
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