Datasheet

LMP8640
LMP8640HV
SNOSB28F –AUGUST 2010–REVISED APRIL 2013 www.ti.com
12V Electrical Characteristics
(1)
(continued)
Unless otherwise specified, all limits ensured for at T
A
= 25°C, V
S
=V
+
– V
-
, V
SENSE
= +IN-(-IN), V
+
= 12V, V
−
= 0V, −2V < V
CM
<
76V, R
L
= 10MΩ. Boldface limits apply at the temperature extremes.
Parameter Test Conditions Min
(2)
Typ
(3)
Max
(2)
Unit
Fixed Gain LMP8640-T
20 V/V
LMP8640HV-T
Fixed Gain LMP8640-F
50 V/V
LMP8640HV-F
Gain A
V
Fixed Gain LMP8640-H
100 V/V
LMP8640HV-H
-0.25 0.25
Gain error V
CM
= 2.1V %
-0.51 0.51
Accuracy over temperature
(5)
−40°C to 125°C, V
CM
=2.1V 26.2 ppm/°C
PSRR Power Supply Rejection Ratio V
CM
= 2.1V, 2.7V < V
+
< 12V, 85 dB
LMP8640HV 2.1V < V
CM
< 42V
103
LMP8640 2.1V < V
CM
< 42V
CMRR Common Mode Rejection Ratio dB
LMP8640HV 2.1V < V
CM
< 76V 95
-2V <V
CM
< 2V, 60
Fixed Gain LMP8640-T DC V
SENSE
= 67.5 mV,
950
LMP8640HV-T
(5)
C
L
= 30 pF ,R
L
= 1MΩ
Fixed Gain LMP8640-F DC V
SENSE
=27 mV,
BW 450 kHz
LMP8640HV-F
(5)
C
L
= 30 pF ,R
L
= 1MΩ
Fixed Gain LMP8640-H DC V
SENSE
= 13.5 mV,
230
LMP8640HV-H
(5)
C
L
= 30 pF ,R
L
= 1MΩ
V
CM
=5V, C
L
= 30 pF, R
L
= 1MΩ,
LMP8640-T LMP8640HV-T V
SENSE
=500mVpp,
SR Slew Rate
(7) (5)
1.8 V/µs
LMP8640-F LMP8640HV-F V
SENSE
=200mVpp,
LMP8640-H LMP8640HV-H V
SENSE
=100mVpp,
R
IN
Differential Mode Input Impedance
(5)
5 kΩ
1050
V
CM
= 2.1V 720
1250
I
S
Supply Current µA
2800
V
CM
= −2V 2300
3000
Maximum Output Voltage V
CM
= 2.1V 11.85 V
LMP8640-T LMP8640HV-T
18.2
V
CM
= 2.1V
V
OUT
LMP8640-F LMP8640HV-F
Minimum Output Voltage 40 mV
V
CM
= 2.1V
LMP8640-H LMP8640HV-H
80
V
CM
= 2.1V
C
LOAD
Max Output Capacitance Load
(8)
30 pF
(7) The number specified is the average of rising and falling slew rates and measured at 90% to 10%.
(8) This parameter is ensured by design and/or characterization and is not tested in production.
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