Datasheet

LMP8602, LMP8602Q, LMP8603, LMP8603Q
www.ti.com SNOSB36D –JULY 2009–REVISED MARCH 2013
5V Electrical Characteristics
(1)
(continued)
Unless otherwise specified, all limits ensured 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.
Min Typ Max
Symbol Parameter Conditions Units
(2) (3) (2)
PSRR Power Supply Rejection Ratio DC 4.5V ≤ V
S
≤ 5.5V 70 90 dB
LMP8602 ±0.25 ±1 %
Input Referred ±0.50 mV
Mid−scale Offset Scaling Accuracy
LMP8603 ±0.45 ±1.5 %
Input Referred ±0.375 mV
Preamplifier (From input pins -IN (pin 1) and +IN (pin 8) to A1 (pin 3))
0V ≤ V
CM
≤ 60V 250 295 350 kΩ
R
CM
Input Impedance Common Mode
−20V ≤ V
CM
< 0V 165 193 250 kΩ
0V ≤ V
CM
≤ 60V 500 590 700 kΩ
R
DM
Input Impedance Differential Mode
−20V ≤ V
CM
< 0V 300 386 500 kΩ
V
OS
Input Offset Voltage V
CM
= V
S
/ 2 ±0.15 ±1 mV
DC CMRR DC Common Mode Rejection Ratio −20V ≤ V
CM
≤ 60V 90 105 dB
f = 1 kHz 80 96
AC CMRR AC Common Mode Rejection Ratio
(7)
dB
f = 10 kHz 83
CMVR Input Common Mode Voltage Range for 80 dB CMRR −22 60 V
K1 Gain
(4)
9.95 10 10.05 V/V
R
F-INT
Output Impedance Filter Resistor 99 100 101 kΩ
TCR
F-INT
Output Impedance Filter Resistor Drift ±5 ±50 ppm/°C
V
OL
R
L
= ∞ 2 10 mV
A1 V
OUT
A1 Ouput Voltage Swing
V
OH
4.95 4.985 V
Output Buffer (From A2 (pin 4) to OUT ( pin 5 )
−2 2
V
OS
Input Offset Voltage 0V ≤ V
CM
≤ V
S
±0.5 mV
−2.5 2.5
LMP8602 4.975 5 5.025
K2 Gain
(8)
V/V
LMP8603 9.95 10 10.05
−40 fA
I
B
Input Bias Current of A2
(9)
±20 nA
V
OL
, LMP8602 10 40
mV
R
L
= 100 kΩ
LMP8603 10 80
A2 V
OUT
A2 Ouput Voltage Swing
(10) (11)
V
OH
,
4.98 4.99 V
R
L
= 100 kΩ
Sourcing, V
IN
= V
S
, V
OUT
= GND –25 –42 –60
I
SC
Output Short-Circuit Current
(12)
mA
Sinking, V
IN
= GND, V
OUT
= V
S
30 48 65
(7) AC Common Mode Signal is a 5V
PP
sine-wave (0V to 5V) at the given frequency.
(8) Both the gain of the preamplifier A1
V
and the gain of the buffer amplifier A2
V
are measured individually. The over all gain of both
amplifiers A
V
is also measured to assure the gain of all parts is always within the A
V
limits.
(9) Positive current corresponds to current flowing into the device.
(10) For this test input is driven from A1 stage in uni-directional mode (Offset pin connected to GND).
(11) For V
OL
, R
L
is connected to V
S
and for V
OH
, R
L
is connected to GND.
(12) Short-Circuit test is a momentary test. Continuous short circuit operation at elevated ambient temperature can result in exceeding the
maximum allowed junction temperature of 150°C.
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