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LMP8640MKX-T Datasheet(PDF) 3 Page - Texas Instruments

Part # LMP8640MKX-T
Description  Precision High Voltage Current Sense Amplifier
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

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LMP8640
LMP8640HV
www.ti.com
SNOSB28F – AUGUST 2010 – REVISED APRIL 2013
Operating Ratings
(1)
Supply Voltage (VS = V
+ - V)
2.7V to 12V
Temperature Range (2)
-40°C to 125°C
Package Thermal Resistance(2)
SOT-6
96°C/W
(1)
“Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur, including inoperability and degradation of
device reliability and/or performance. Functional operation of the device and/or non-degradation at the Absolute Maximum Ratings or
other conditions beyond those indicated in the Operating Ratings is not implied. Operating Ratings indicate conditions at which the
device is functional and the device should not be operated beyond such conditions.
(2)
The maximum power dissipation must be derated at elevated temperatures and is dictated by TJ(MAX), θJA, and the ambient temperature,
TA. The maximum allowable power dissipation PDMAX = (TJ(MAX) - TA)/ θJA or the number given in Absolute Maximum Ratings, whichever
is lower.
2.7V Electrical Characteristics
(1)
Unless otherwise specified, all limits ensured for at TA = 25°C, VS=V
+ – V-, V
SENSE= +IN-(-IN), V
+ = 2.7V, V= 0V, −2V < V
CM <
76V, RL = 10MΩ. Boldface limits apply at the temperature extremes.
Parameter
Test Conditions
Min(2)
Typ(3)
Max(2)
Unit
-900
900
VOS
Input Offset Voltage
VCM = 2.1V
µV
-1160
1160
TCVOS
Input Offset Voltage Drift(4) (5)
VCM = 2.1V
2.6
µV/°C
20
IB
Input Bias Current (6)
VCM = 2.1V
12
µA
27
eni
Input Voltage Noise (5)
f > 10 kHz
117
nV/
√Hz
Fixed Gain LMP8640-T
20
V/V
LMP8640HV-T
Fixed Gain LMP8640-F
50
V/V
LMP8640HV-F
Gain AV
Fixed Gain LMP8640-H
100
V/V
LMP8640HV-H
-0.25
0.25
Gain error
VCM = 2.1V
%
-0.51
0.51
Accuracy over temperature(5)
−40°C to 125°C, VCM=2.1V
26.2
ppm/°C
PSRR
Power Supply Rejection Ratio
VCM = 2.1V, 2.7V < V
+ < 12V,
85
dB
LMP8640HV 2.1V < VCM < 42V
103
LMP8640 2.1V < VCM< 42V
CMRR
Common Mode Rejection Ratio
dB
LMP8640HV 2.1V < VCM < 76V
95
-2V <VCM < 2V,
60
Fixed Gain LMP8640-T
DC VSENSE = 67.5 mV,
950
LMP8640HV-T (5)
CL = 30 pF,RL= 1MΩ
Fixed Gain LMP8640-F
DC VSENSE =27 mV,
BW
450
kHz
LMP8640HV-F (5)
CL = 30 pF, RL= 1MΩ
Fixed Gain LMP8640-H
DC VSENSE = 13.5 mV,
230
LMP8640HV-H (5)
CL = 30 pF ,RL= 1MΩ
(1)
Electrical Table values apply only for factory testing conditions at the temperature indicated. Factory testing conditions result in very
limited self-heating of the device such that TJ = TA. No specification of parametric performance is indicated in the electrical tables under
conditions of internal self-heating where TJ > TA. Absolute Maximum Ratings indicate junction temperature limits beyond which the
device may be permanently degraded, either mechanically or electrically.
(2)
Limits are 100% production tested at 25°C. Limits over the operating temperature range are ensured through correlations using
statistical quality control (SQC) method.
(3)
Typical values represent the most likely parametric norm at the time of characterization. Actual typical values may vary over time and
will also depend on the application and configuration. The typical values are not tested and are not ensured on shipped production
material.
(4)
Offset voltage temperature drift is determined by dividing the change in VOS at the temperature extremes by the total temperature
change.
(5)
This parameter is ensured by design and/or characterization and is not tested in production.
(6)
Positive Bias Current corresponds to current flowing into the device.
Copyright © 2010–2013, Texas Instruments Incorporated
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