Datasheet

LMP8480, LMP8481
SNVS829A –JUNE 2012–REVISED AUGUST 2012 www.ti.com
Electrical Characteristics
(1)
Unless otherwise specified, all limits guaranteed for at T
A
= 25°C, V
CC
= +4.5V to +76V, +4.5V < V
CM
< +76V, R
L
= 100k,
V
SENSE
= (V
RSP
- V
RSN
) = 0V. Boldface limits apply at the temperature extremes, T
MIN
≦ T
A
≦ T
MAX
.
Min Typ Max
Parameter Condition
(2) (3) (2)
Units
T
a
= +25°C ±80 ±265
V
CC
= V
RSP
= 48V,
Input Offset Voltage (RTI) V
OS
µV
ΔV
SENSE
= 100mV
T
a
= –40°C to +125°C ±900
Input Offset Voltage Drift
TCV
OS
6 μV/°C
(4)
Input Bias Current
(5)
I
B
V
CC
= V
RSP
= 76V, Per Input 6.3 12 μA
Input Leakage Current I
LEAK
V
CC
= 0, V
RSP
= 76V, Both Inputs Together 0.01 2 μA
-T Version 667
-F Version 267
Differential Input Voltage Across Sense V
SENSE(
V
CC
= 16 mV
Resistor
(6)
MAX)
-S Version 222
-H Version 133
-T Version 19.8 20 20.2
-F Version 49.6 50 50.4
Gain A
V
V/V
-S Version 59.5 60 60.5
-H Version 99.2 100 100.8
T
a
= +25°C ±0.6 %
Gain Error V
CC
= V
RSP
= 48V
T
a
= –40°C to +125°C ±0.8 %
DC
DC Power Supply Rejection Ratio V
RSP
= 48V, V
CC
= 4.5 to 76V 100 122 dB
PSRR
V
CC
= 48V, V
RSP
= 4.5 to 76V 100 124 dB
DC
DC Common Mode Rejection Ratio
CMRR
V
CC
= 48V, V
RSP
= 4 to 76V 124 dB
Input Common Mode Voltage Range CMVR CMRR > 100dB 4 76 V
Output Resistance / Load Regulation R
OUT
V
SENSE
= 100mV 0.1
Maximum Output Voltage
V
CC
= 4.5V, V
RSP
= 48V, V
SENSE
= +1V
(Headroom) V
OMAX
230 500 mV
I
OUT
(sourcing) = 500μA
(V
OMAX
= V
CC
– V
OUT
)
V
CC
= V
RSP
= 48V, V
SENSE
= -1V,
3 15
I
OUT
(sinking) = 10µA
V
CC
= V
RSP
= 4.5V, V
SENSE
= -1V,
3
I
OUT
(sinking) = 10µA
Minimum Output Voltage V
OMIN
mV
V
CC
= V
RSP
= 48V, V
SENSE
= -1V,
18 55
I
OUT
(sinking) = 100µA
V
CC
= V
RSP
= 4.5V, V
SENSE
= -1V,
18
I
OUT
(sinking) = 100µA
V
CC
=28V, V
RSP
=28V, V
SENSE
=600mV, I
OUT
Output voltage with load V
OLOAD
12 V
(sourcing)=500uA
V
CC
= 20, V
RSP
= 16, V
OUT
=12, ΔI
L
= 200na
Output Load Regulation V
OLREG
0.001 %
to 8mA
Supply Current I
CC
V
OUT
=2V, R
L
= 10M, V
CC
= V
RSP
= 76V 88 155 uA
−3 dB Bandwidth BW R
L
= 10M, C
L
= 20pF 270 kHz
(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 T
J
= T
A
. No guarantee of parametric performance is indicated in the electrical tables under
conditions of internal self-heating where T
J
> T
A
.
(2) All limits are guaranteed by testing, design, or statistical analysis.
(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 guaranteed on shipped production
material.
(4) Offset voltage temperature drift is determined by dividing the change in V
OS
at the temperature extremes by the total temperature
change.
(5) Positive Bias Current corresponds to current flowing into the device.
(6) This parameter is guaranteed by design and/or characterization and is not tested in production.
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