Datasheet

LMP8602, LMP8602Q, LMP8603, LMP8603Q
www.ti.com SNOSB36D –JULY 2009–REVISED MARCH 2013
Operating Ratings
(1)
Supply Voltage (V
S
– GND) 3.0V to 5.5V
Offset Voltage (Pin 7 ) 0 to V
S
Temperature Range
(2)
Packaged devices −40°C to +125°C
Package Thermal Resistance
(2)
8-Pin SOIC (θ
JA
) 190°C/W
8-Pin VSSOP (θ
JA
) 203°C/W
(1) “Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur, including inoperability and degradation of
the 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 Recommended Operating Conditions is not implied. The Recommended Operating
Conditions indicate conditions at which the device is functional and the device should not be beyond such conditions. All voltages are
measured with respect to the ground pin, unless otherwise specified.
(2) The maximum power dissipation must be derated at elevated temperatures and is dictated by T
J(MAX)
, θ
JA
, and the ambient temperature,
T
A
. The maximum allowable power dissipation P
DMAX
= (T
J(MAX)
- T
A
) / θ
JA
or the number given in Absolute Maximum Ratings,
whichever is lower.
3.3V Electrical Characteristics
(1)
Unless otherwise specified, all limits ensured at T
A
= 25°C, V
S
= 3.3V, GND = 0V, −4V ≤ V
CM
≤ 27V, 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)
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 1 1.3 mA
LMP8602 49.75 50 50.25
A
V
Total Gain V/V
LMP8603 99.5 100 100.5
Gain Drift
(4)
−40°C ≤ T
A
≤ 125°C −2.7 ±20 ppm/°C
SR Slew Rate
(5)
V
IN
= ±0.165V 0.4 0.7 V/μs
BW Bandwidth 50 60 kHz
V
OS
Input Offset Voltage V
CM
= V
S
/ 2 0.15 ±1 mV
TCV
OS
Input Offset Voltage Drift
(6)
−40°C ≤ T
A
≤ 125°C 2 ±10 μV/°C
0.1 Hz − 10 Hz, 6 Sigma 16.4 μV
P-P
e
n
Input Referred Voltage Noise
Spectral Density, 1 kHz 830 nV/√Hz
PSRR Power Supply Rejection Ratio DC, 3.0V ≤ V
S
≤ 3.6V, V
CM
= V
S
/2 70 86 dB
LMP8602 ±0.25 ±1 %
Input Referred ±0.33 mV
Mid−scale Offset Scaling Accuracy
LMP8603 ±0.45 ±1.5 %
Input Referred ±0.248 mV
Preamplifier (From input pins -IN (pin 1) and +IN (pin 8) to A1 (pin 3))
R
CM
Input Impedance Common Mode −4V ≤ V
CM
≤ 27V 250 295 350 kΩ
R
DM
Input Impedance Differential Mode −4V ≤ V
CM
≤ 27V 500 590 700 kΩ
V
OS
Input Offset Voltage V
CM
= V
S
/ 2 ±0.15 ±1 mV
DC CMRR DC Common Mode Rejection Ratio −2V ≤ V
CM
≤ 24V 86 96 dB
AC Common Mode Rejection Ratio
(7)
f = 1 kHz 80 94
AC CMRR dB
f = 10 kHz 85
CMVR Input Common Mode Voltage Range for 80 dB CMRR −4 27 V
(1) The electrical Characteristics tables list ensured specifications under the listed Recommended Operating Conditions except as otherwise
modified or specified by the Electrical Characteristics Conditions and/or Notes. Typical specifications are estimations only and are not
ensured.
(2) Datasheet min/max specification limits are ensured by test.
(3) Typical values represent the most likely parameter norms at T
A
= +25°C, and at the Recommended Operation Conditions at the time of
product characterization and are not ensured.
(4) 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.
(5) Slew rate is the average of the rising and falling slew rates.
(6) Offset voltage drift determined by dividing the change in V
OS
at temperature extremes into the total temperature change.
(7) AC Common Mode Signal is a 5V
PP
sine-wave (0V to 5V) at the given frequency.
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